CN106930827A - A kind of CCHP energy supplying system, method and device - Google Patents
A kind of CCHP energy supplying system, method and device Download PDFInfo
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- CN106930827A CN106930827A CN201710146503.3A CN201710146503A CN106930827A CN 106930827 A CN106930827 A CN 106930827A CN 201710146503 A CN201710146503 A CN 201710146503A CN 106930827 A CN106930827 A CN 106930827A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
- F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2260/00—Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to the integration of equipments technical field of energy supplying system, a kind of CCHP energy supplying system, method and device are disclosed.CCHP energy supplying system includes internal combustion engine, air-conditioner set, organic rankine cycle system and the first generator and the second generator, wherein：Internal combustion engine has clutch end and flue gas output end, and clutch end is connected with the first generator；Air-conditioner set is connected with flue gas output end；Organic rankine cycle system includes the evaporator, expanding machine, condenser and the working medium pump that are sequentially connected by pipeline, has working medium in pipeline, and evaporator is connected with flue gas output end, and expanding machine is connected with the second generator.Compared to existing technology, the program can improve the utilization rate of CCHP energy supplying system, reduce energy supply cost.
Description
Technical field
The present invention relates to the integration of equipments technical field of energy supplying system, more particularly to a kind of CCHP energy supply system
System, method and device.
Background technology
Commercial building, such as office building, market building etc., generally fallen into energy resource consumption electric load it is of a relatively high and
The relatively small number of low hotspot stress building of cooling and heating load.In summer or winter, for commercial building, its existing substantial amounts of electricity
Demand has hot or cold demand simultaneously, now using cogeneration cooling heating system (Combined Cooling Heating and
Power, abbreviation CCHP) and municipal power grid joint energy supply, wherein, CCHP systems can be while generating electricity, can also be using being
System waste heat carries out heat supply or cooling to commercial building, therefore this energization schemes can keep the same of high-energy source utilization ratio
When fully meet summer or winter cool and thermal power energy requirement.
Prior art has a drawback in that, in transition season, the cooling and heating load of commercial building is relatively low, uses CCHP
Waste heat produced by system energy supply because cannot make full use of and caused by waste, be unfavorable for reducing energy supply cost.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of CCHP energy supplying system, method and device, cold and hot to improve
The utilization rate of energy supplying system is produced in Electricity Federation, reduces energy supply cost.
The embodiment of the invention provides a kind of CCHP energy supplying system, including internal combustion engine, air-conditioner set, organic Rankine
The circulatory system and the first generator and the second generator, wherein：
The internal combustion engine has clutch end and flue gas output end, and the clutch end is connected with the first generator；
The air-conditioner set is connected with the flue gas output end；
The organic rankine cycle system includes the evaporator, expanding machine, condenser and the working medium that are sequentially connected by pipeline
There is working medium, the evaporator is connected with the flue gas output end in pump, the pipeline, the expanding machine and the second generator connect
Connect.
Using embodiment of the present invention technical scheme, cool and thermal power demand that can be according to commercial building in the different times determines to be somebody's turn to do
The mode of operation of CCHP energy supplying system, the power of internal combustion engine output is transferred to the first generator for generating electricity, its discharge
Flue gas can be supplied to air-conditioner set in summer or winter, to be freezed or heat supply, and then may be used in transition season
Organic rankine cycle system is delivered to by flue gas, organic rankine cycle system is done work and power is transferred to the using waste heat
Two generators are used to generate electricity, compared to existing technology, in transition season still using the CCHP energy supplying system energy supply
And the fume afterheat of internal combustion engine can be made full use of to be generated electricity, therefore the program improves the utilization of CCHP energy supplying system
Rate, that is, improve the full annual utilization hours of CCHP energy supplying system, reduces energy supply cost.
Preferably, CCHP energy supplying system also includes boiler and/or refrigeration machine.
Preferably, CCHP energy supplying system also includes the First Heat Exchanger connected with the cylinder sleeve of internal combustion engine.
Preferably, CCHP energy supplying system also includes the second heat exchanger, and second heat exchanger has what is be isolated
Hot flow path and cold runner, the hot flow path are connected with First Heat Exchanger, and the cold runner is connected with the heat supply backwater channel of building.
Preferably, the air-conditioner set is connected with the output end of hot water of First Heat Exchanger.
Preferably, CCHP energy supplying system also includes：
Temperature sensor, is arranged at interior, for detecting indoor temperature information；
Controller, respectively with internal combustion engine, air-conditioner set, organic rankine cycle system, boiler, refrigeration machine and TEMP
Device is electrically connected, and is used for
When first temperature threshold of the indoor temperature less than setting, control internal combustion engine, air-conditioner set and boiler are opened, and are controlled
Air-conditioner set processed is in heat supply working condition, while controlling organic rankine cycle system and refrigeration machine to shut down；
When indoor temperature is not less than the first temperature threshold of setting and the second temperature threshold value less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine；
When indoor temperature is not less than the second temperature threshold value of setting and three temperature threshold less than setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature is not less than the 3rd temperature threshold of setting and four temperature threshold less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine；
When four temperature threshold of the indoor temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened,
And control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system and boiler down；
Wherein, the first temperature threshold, second temperature threshold value, the 3rd temperature threshold and the 4th temperature threshold need to meet：First
Temperature threshold, second temperature threshold value, the 3rd temperature threshold and the 4th temperature threshold increase successively.
Based on identical inventive concept, the embodiment of the present invention additionally provides a kind of CCHP energy supply method, including：
Obtain current indoor temperature information；
When indoor temperature is not less than the first temperature threshold of setting and the second temperature threshold value less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine；
When indoor temperature is not less than the second temperature threshold value of setting and three temperature threshold less than setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature is not less than the 3rd temperature threshold of setting and four temperature threshold less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine.
Using embodiment of the present invention technical scheme, cool and thermal power demand that can be according to commercial building in the different times determines to be somebody's turn to do
The mode of operation of CCHP power supply device, the power of internal combustion engine output is transferred to the first generator for generating electricity, its discharge
Flue gas can be supplied to air-conditioner set in summer or winter, to be freezed or heat supply, and then may be used in transition season
Organic rankine cycle system is delivered to by flue gas, organic rankine cycle system is done work and power is transferred to the using waste heat
Two generators are used to generate electricity, compared to existing technology, in transition season still using the CCHP power supply device energy supply,
The fume afterheat of internal combustion engine can be made full use of to be generated electricity, therefore the program improves the utilization of CCHP energy supplying system
Rate, that is, improve the full annual utilization hours of CCHP energy supplying system, reduces energy supply cost.
Preferably, CCHP energy supply method also includes：
When first temperature threshold of the indoor temperature less than setting, control internal combustion engine, air-conditioner set and boiler are opened, and are controlled
Air-conditioner set processed is in heat supply working condition, while controlling organic rankine cycle system and refrigeration machine to shut down.
Preferably, CCHP energy supply method also includes：
When four temperature threshold of the indoor temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened,
And control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system and boiler down.
Based on identical inventive concept, the embodiment of the present invention additionally provides a kind of CCHP power supply device, including：
Acquisition equipment, for obtaining indoor temperature information；
Control device, is used for
When indoor temperature is not less than the first temperature threshold of setting and the second temperature threshold value less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine；
When indoor temperature is not less than the second temperature threshold value of setting and three temperature threshold less than setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature is not less than the 3rd temperature threshold of setting and four temperature threshold less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine.
Using embodiment of the present invention technical scheme, cool and thermal power demand that can be according to commercial building in the different times determines to be somebody's turn to do
The mode of operation of CCHP power supply device, the power of internal combustion engine output is transferred to the first generator for generating electricity, its discharge
Flue gas can be supplied to air-conditioner set in summer or winter, to be freezed or heat supply, and then may be used in transition season
Organic rankine cycle system is delivered to by flue gas, organic rankine cycle system is done work and power is transferred to the using waste heat
Two generators are used to generate electricity, compared to existing technology, in transition season still using the CCHP power supply device energy supply,
The fume afterheat of internal combustion engine can be made full use of to be generated electricity, therefore the program improves the utilization of CCHP energy supplying system
Rate, that is, improve the full annual utilization hours of CCHP energy supplying system, reduces energy supply cost.
Preferably, the control device, is further used for when first temperature threshold of the indoor temperature less than setting, control
Internal combustion engine, air-conditioner set and boiler are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic Rankine bottoming cycle
System and refrigeration machine are shut down.
Preferably, the control device, is further used for when four temperature threshold of the indoor temperature not less than setting, control
Internal combustion engine processed, air-conditioner set and refrigeration machine are opened, and control air-conditioner set to be in cooling working condition, while controlling organic Rankine
The circulatory system and boiler down.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment of the present invention CCHP energy supplying system；
Fig. 2 is the schematic flow sheet of embodiment of the present invention CCHP energy supply method；
Fig. 3 is the structural representation of embodiment of the present invention CCHP power supply device.
Reference：
10- internal combustion engine 11- clutch end 12- flue gas output end 20- air-conditioner sets
30- organic rankine cycle system 31- evaporator 32- expanding machine 33- condensers
34- working medium pumps 40- the first generator 50- the second generator 60- boilers
70- refrigerant 80- First Heat Exchangers the second heat exchangers of 90- 100- obtains equipment
200- control devices
Specific embodiment
In order to improve the utilization rate of CCHP energy supplying system, energy supply cost is reduced, the embodiment of the invention provides one
Plant CCHP energy supplying system, method and device.To make the object, technical solutions and advantages of the present invention clearer, below
The present invention is described in further detail for embodiment.
As shown in figure 1, CCHP energy supplying system provided in an embodiment of the present invention, including internal combustion engine 10, air-conditioner set
20th, the generator 40 of organic rankine cycle system 30 and first and the second generator 50, wherein：
Internal combustion engine 10 has clutch end 11 and flue gas output end 12, and clutch end 11 connects with the first generator 40
Connect；
Air-conditioner set 20 is connected with flue gas output end 12；
Organic rankine cycle system 30 includes the evaporator 31, expanding machine 32, the and of condenser 33 that are sequentially connected by pipeline
There is working medium, evaporator 31 is connected with flue gas output end 12, and expanding machine 32 connects with the second generator 50 in working medium pump 34, pipeline
Connect.
Using embodiment of the present invention technical scheme, cool and thermal power demand that can be according to commercial building in the different times determines to be somebody's turn to do
The mode of operation of CCHP energy supplying system, the power of the output of internal combustion engine 10 is transferred to the first generator 40 to be used to generate electricity, its
The flue gas of discharge can be supplied to air-conditioner set 20 in summer or winter, to be freezed or heat supply, and in transition season
When then flue gas can be delivered to organic rankine cycle system 30, organic rankine cycle system 30 is done work and will be dynamic using waste heat
Power is transferred to the second generator 50 to be used to generate electricity, compared to existing technology, in transition season still using the CCHP
Energy supplying system energy supply simultaneously can make full use of the fume afterheat of internal combustion engine 10 to be generated electricity, therefore the program improves CCHP
The utilization rate of energy supplying system, that is, improve the full annual utilization hours of CCHP energy supplying system, reduces energy supply cost.
Organic rankine cycle system 30 (Organic Rankine Cycle, abbreviation ORC) is with low-boiling-point organic compound as work
The Rankine cycle of matter, organic working medium absorbs heat in evaporator 31 from fume afterheat, and generation has certain pressure and temperature
Steam, steam sent out into expansion work is carried out in expanding machine 32 such that it is able to output power to the second generator 50
Electricity, after acting from expanding machine 32 discharge low-pressure steam is into heat release in condenser 33 and condenses into liquid, finally by work
Matter pump 34 is come back in evaporator 31, is circulated next time.Wherein, the particular type of working medium is not limited, for example, can be five
The refrigerants such as fluoro-propane, HFA 134a or 1,1,1- HFC-143a.
Fuel type used by internal combustion engine 10 is not limited, for example, can be coal or natural gas, as preferred reality of the invention
Example is applied, internal combustion engine 10 externally exports power and fume afterheat by the natural gas that the gas distributing system that burns is provided.Internal combustion engine 10
Quantity do not limit, can be one or more, the energy requirement of cool and thermal power is determined with specific reference to building.
Air-conditioner set 20 in the embodiment of the present invention is the fume hot-water with internal combustion engine 10 discharge flue gas and hot water as power
Type lithium bromide chiller, the quantity of air-conditioner set 20 is not limited, and thinks one or more, and the energy of cool and thermal power is needed with specific reference to building
Ask determination.
As shown in figure 1, in a preferred embodiment of the invention, CCHP energy supplying system also include boiler 60 and/or
Refrigeration machine 70.Using the technical scheme, when the thermic load of building is higher, the heating load of air-conditioner set 20 can not meet heat demand
When, it is possible to use boiler 60 undertakes the supply of partial heat；When the refrigeration duty of building is higher, the refrigerating capacity of air-conditioner set 20 can not
When meeting refrigeration requirement, it is possible to use refrigeration machine 70 undertakes the supply of part cold, therefore by setting boiler 60 and refrigeration machine
70 allow the CCHP energy supplying system to meet the various hot-cool demands of building, improve the energy supplying system to energy demand
The adaptability of change.Wherein, the fuel type used by boiler 60 is not limited, it is preferred that in embodiments of the present invention using natural gas
The natural gas that pipe network is provided is used as fuel.
In a preferred embodiment of the invention, CCHP energy supplying system also includes what is connected with the cylinder sleeve of internal combustion engine 10
First Heat Exchanger 80.First Heat Exchanger 80 can exchange heat to the jacket water of internal combustion engine, internal combustion engine 10 is worked more and stablize,
So as to improve the functional reliability of CCHP energy supplying system.
Continuing with as shown in figure 1, in a preferred embodiment of the invention, CCHP energy supplying system is also changed including second
Hot device 90, the second heat exchanger 90 has the hot flow path and cold runner being isolated, and hot flow path is connected with First Heat Exchanger 80, cold runner
Heat supply backwater channel with building is connected.Using the technical scheme, will by the second heat exchanger 90 that can isolate hot water or cold water
Cooling water of internal combustion engine and the heat supply backwater heat exchange of building, make cooling water of internal combustion engine that First Heat Exchanger 80 is reentered after being cooled down
It is interior, and make heat supply backwater that heat supplying pipeline is reentered after being heated up, therefore the program can make full use of internal combustion engine to cool down
The waste heat of water, while cooling water of internal combustion engine can be avoided to pollute heat supply backwater.Wherein, the second heat exchanger 90 can be plate
Formula heat exchanger or thermal wheel.
Preferably, air-conditioner set 20 is connected with the output end of hot water of First Heat Exchanger 80.The power of air-conditioner set 20 can be with
Flue gas is discharged by internal combustion engine 10 and cooling water of internal combustion engine is provided simultaneously, so as to make full use of the fume afterheat and cooling water of internal combustion engine
Waste heat, reduce further energy supply cost.
In a preferred embodiment of the invention, CCHP energy supplying system also includes：
Temperature sensor, is arranged at interior, for detecting indoor temperature information；
Controller, respectively with internal combustion engine 10, air-conditioner set 20, organic rankine cycle system 30, boiler 60, refrigeration machine 70 with
And temperature sensor electrical connection.
When first temperature threshold of the indoor temperature less than setting, controller control internal combustion engine 10, air-conditioner set 20 and pot
Stove 60 is opened, and controls air-conditioner set 20 to be in heat supply working condition, while controlling organic rankine cycle system 30 and refrigeration machine
70 shut down.The program be applied to building thermic load it is very high when, now needing air-conditioner set 20 and boiler 60 to open simultaneously is carried out
Heating, the flue gas of the discharge of internal combustion engine 10 is all supplied to air-conditioner set 20.
When indoor temperature is not less than the first temperature threshold of setting and the second temperature threshold value less than setting, controller control
Internal combustion engine processed 10 and air-conditioner set 20 are opened, and control air-conditioner set 20 to be in heat supply working condition, while controlling organic Rankine
The circulatory system 30, boiler 60 and refrigeration machine 70 are shut down.The program be applied to building thermic load it is higher when, now only need open
Air-conditioner set 20 is heated, and the flue gas of the discharge of internal combustion engine 10 is supplied to air-conditioner set 20.It is noted that in the thermic load
Under the conditions of, if the partial fume of the discharge of internal combustion engine 10 can meet power demand when air-conditioner set 20 heats, then and it is unnecessary
Flue gas can also be delivered to organic rankine cycle system 30 and be generated electricity such that it is able to further improve the UTILIZATION OF VESIDUAL HEAT IN of energy supplying system
Rate, reduces energy supply cost.
When indoor temperature is not less than the second temperature threshold value of setting and three temperature threshold less than setting, controller control
Internal combustion engine processed 10 and organic rankine cycle system 30 are opened, while controlling air-conditioner set 20, boiler 60 and refrigeration machine 70 to shut down.Should
Scheme be applied to Building Cooling load it is relatively low when, now internal combustion engine 10 discharge flue gas be all delivered to organic Rankine bottoming cycle system
System 30 is generated electricity, and the daily heat demand of building can be provided by cooling water of internal combustion engine waste heat.
When indoor temperature is not less than the 3rd temperature threshold of setting and four temperature threshold less than setting, controller control
Internal combustion engine processed 10 and air-conditioner set 20 are opened, and control air-conditioner set 20 to be in cooling working condition, while controlling organic Rankine
The circulatory system 30, boiler 60 and refrigeration machine 70 are shut down.The program be applied to building refrigeration duty it is higher when, now only need open
Air-conditioner set 20 is freezed, and the flue gas of the discharge of internal combustion engine 10 is supplied to air-conditioner set 20.It is noted that in the refrigeration duty
Under the conditions of, if the partial fume of the discharge of internal combustion engine 10 can meet power demand when air-conditioner set 20 freezes, then and it is unnecessary
Flue gas can also be delivered to organic rankine cycle system 30 and be generated electricity such that it is able to further improve the UTILIZATION OF VESIDUAL HEAT IN of energy supplying system
Rate, reduces energy supply cost.
When four temperature threshold of the indoor temperature not less than setting, controller control internal combustion engine 10, the and of air-conditioner set 20
Refrigeration machine 70 is opened, and controls air-conditioner set 20 to be in cooling working condition, while controlling organic rankine cycle system 30 and pot
Stove 60 is shut down.The program be applied to building refrigeration duty it is very high when, now need air-conditioner set 20 and refrigeration machine 70 to open simultaneously
Freezed, the flue gas of the discharge of internal combustion engine 10 is all supplied to air-conditioner set 20.
Wherein, the first temperature threshold, second temperature threshold value, the 3rd temperature threshold and the 4th temperature threshold need to meet：First
Temperature threshold, second temperature threshold value, the 3rd temperature threshold and the 4th temperature threshold increase successively, and such as the first temperature threshold can set
It is set to 5 DEG C, second temperature threshold value can be set as 18 DEG C, and the 3rd temperature threshold can be set as 28 DEG C, and the 4th temperature threshold can
To be set as 35 DEG C, but the present invention is not limited to these specific numerical value.
Hereinafter more detailed description will be done to the embodiment of the present invention by taking certain commercial building as an example.
Certain commercial building, including market and office building, the ㎡ of overall floorage 5080, use CCHP energy supplying system
Energy supply.The energy supply demand of the commercial building is divided into three periods：The refrigeration period is 5~September, about 150 days, 3600 hours；Heating
Period is December, January and 2 months, about 90 days, 2160 hours；Transition period be March, April and October, November, about 120 days,
2880 hours.The commercial building is less with energy demand in festivals or holidays, therefore can be ignored.Operationally section, the commercialization is built
The electric load built is more steady, and unit area power load is about 100W/ ㎡, and total power load is about 500kW；Summer refrigeration duty
Larger, unit area refrigeration duty is about 160W/ ㎡, is always about 800kW with refrigeration duty；Winter unit area thermic load is about 60W/
㎡, is always about 300kW with thermic load.
The CCHP energy supplying system of present case includes gas internal-combustion engine, a fume hot-water type lithium bromide machine
Group, organic rankine cycle system and gas fired-boiler and electric refrigerating machine, the wherein important technological parameters of gas internal-combustion engine sum such as table 1
Shown, the important technological parameters of organic rankine cycle system are as shown in table 2.
The important technological parameters of the gas internal-combustion engine sum of table 1
The important technological parameters of the organic rankine cycle system of table 2
By taking a certain working day in transition period as an example, the operation conditions to CCHP energy supplying system is analyzed.
Assuming that the commercial building is used 10 hours on weekdays, by analysis above, the commercial building is in the cold and hot negative of transition period
Lotus is less, if the electric load of 500kW is provided all of municipal power network, according to the price standard of current civil power, then
The electric energy of 5000kWh needs to spend about 3900 yuan；If using CCHP energy supplying system and municipal power grid joint energy supply,
In 10 hours on weekdays, there are 6 hours to be in electricity price crest segment high, CCHP energy supply is used in this 6 hours
System, it is possible to provide the electric energy of 2400kWh, and the flue gas of gas internal-combustion engine discharge can be delivered to organic rankine cycle system and enter
Row generate electricity, it is possible to provide electric energy be
W=297kW × 6 × 19% ≈ 340kWh
This scheme whole day consumes natural gas
Wherein.Q is the Lower heat value of natural gas, takes q=35MJ/N ㎡, then it is 650N ㎡ to consume natural gas m.
This scheme need to be from municipal power network power taking
P=5000kW-2400kW-340kW=2260kW
According to current electricity rates and Gas Prices, the program about spends 3328 yuan.
It can be seen that, in transition period, if the commercial building utilizes CCHP energy supply system provided in an embodiment of the present invention
System energy supply, compared to existing technology in merely with municipal power network energy supply scheme, cost 15% or so can be reduced, while cool and thermal power
Coproduction energy supplying system can at least run 528 hours in transition period.Therefore, the program improves CCHP energy supply system
The utilization rate of system, and significantly reduce energy supply cost.
Based on identical inventive concept, the embodiment of the present invention additionally provides a kind of CCHP energy supply method, including：
Obtain current indoor temperature information；
When indoor temperature is not less than the first temperature threshold of setting and the second temperature threshold value less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine；
When indoor temperature is not less than the second temperature threshold value of setting and three temperature threshold less than setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature is not less than the 3rd temperature threshold of setting and four temperature threshold less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine.
Using embodiment of the present invention technical scheme, cool and thermal power demand that can be according to commercial building in the different times determines to supply
Energy method, the power of internal combustion engine output is transferred to the first generator for generating electricity, and the flue gas of its discharge is in summer or winter
Can supply to air-conditioner set, to be freezed or heat supply, and then flue gas can be delivered to organic Rankine in transition season
The circulatory system, is made organic rankine cycle system do work and power is transferred into the second generator for generating electricity using waste heat, is compared
Prior art, the CCHP energy supply method energy supply is utilized in transition season, can make full use of the fume afterheat of internal combustion engine
Generated electricity, therefore the program improves the utilization rate of CCHP energy supplying system, that is, improve CCHP energy supply system
The full annual utilization hours of system, reduce energy supply cost.
Preferably, CCHP energy supply method also includes：
When first temperature threshold of the indoor temperature less than setting, control internal combustion engine, air-conditioner set and boiler are opened, and are controlled
Air-conditioner set processed is in heat supply working condition, while controlling organic rankine cycle system and refrigeration machine to shut down.
Preferably, CCHP energy supply method also includes：
When four temperature threshold of the indoor temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened,
And control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system and boiler down.
As shown in Fig. 2 a specific embodiment of CCHP energy supply method of the present invention, comprises the following steps：
Step 101：Obtain current indoor temperature information；
Step 102：Whether indoor temperature is judged less than the first temperature threshold for setting, if it is, step 103 is performed, it is no
Then, step 104 is performed；
Step 103：Control internal combustion engine, air-conditioner set and boiler are opened, and control air-conditioner set to be in heat supply working condition,
Organic rankine cycle system and refrigeration machine is controlled to shut down simultaneously；
Step 104：Judge indoor temperature whether not less than the first temperature threshold for setting and less than the second temperature of setting
Threshold value, if it is, performing step 105, otherwise, performs step 106；
Step 105：Control internal combustion engine and air-conditioner set are opened, and control air-conditioner set to be in heat supply working condition, while
Control organic rankine cycle system, boiler and refrigeration machine are shut down；
Step 106：Judge indoor temperature whether not less than the second temperature threshold value for setting and less than the 3rd temperature of setting
Threshold value, if it is, performing step 107, otherwise, performs step 108；
Step 107：Control internal combustion engine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration
Machine is shut down；
Step 108：Judge indoor temperature whether not less than the 3rd temperature threshold for setting and less than the 4th temperature of setting
Threshold value, if it is, performing step 109, otherwise, performs step 110；
Step 109：Control internal combustion engine and air-conditioner set are opened, and control air-conditioner set to be in cooling working condition, while
Control organic rankine cycle system, boiler and refrigeration machine are shut down；
Step 110：Control internal combustion engine, air-conditioner set and refrigeration machine are opened, and control air-conditioner set to be in cooling work shape
State, while controlling organic rankine cycle system and boiler down.
It is pointed out that the step of CCHP energy supply method of the present invention implementation order be not limited to it is cited in Fig. 2
Mode, above-mentioned steps can be adjusted flexibly according to actual conditions, to meet building to the energy requirement of cool and thermal power.
As shown in figure 3, being based on identical inventive concept, the embodiment of the present invention additionally provides a kind of CCHP energy supply dress
Put, including：
Acquisition equipment 100, for obtaining indoor temperature information；
Control device 200, is used for
When indoor temperature is not less than the first temperature threshold of setting and the second temperature threshold value less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine；
When indoor temperature is not less than the second temperature threshold value of setting and three temperature threshold less than setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature is not less than the 3rd temperature threshold of setting and four temperature threshold less than setting, internal combustion is controlled
Machine and air-conditioner set are opened, and control air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler
Shut down with refrigeration machine.
Using embodiment of the present invention technical scheme, cool and thermal power demand that can be according to commercial building in the different times determines to be somebody's turn to do
The mode of operation of CCHP power supply device, the power of internal combustion engine output is transferred to the first generator for generating electricity, its discharge
Flue gas can be supplied to air-conditioner set in summer or winter, to be freezed or heat supply, and then may be used in transition season
Organic rankine cycle system is delivered to by flue gas, organic rankine cycle system is done work and power is transferred to the using waste heat
Two generators are used to generate electricity, compared to existing technology, in transition season still using the CCHP power supply device energy supply,
The fume afterheat of internal combustion engine can be made full use of to be generated electricity, therefore the program improves the utilization of CCHP energy supplying system
Rate, that is, improve the full annual utilization hours of CCHP energy supplying system, reduces energy supply cost.
Preferably, control device, is further used for, when first temperature threshold of the indoor temperature less than setting, controlling internal combustion
Machine, air-conditioner set and boiler are opened, and control air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system
Shut down with refrigeration machine.
Preferably, control device, is further used for when four temperature threshold of the indoor temperature not less than setting, in control
Combustion engine, air-conditioner set and refrigeration machine are opened, and control air-conditioner set to be in cooling working condition, while controlling organic Rankine bottoming cycle
System and boiler down.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (12)
1. a kind of CCHP energy supplying system, it is characterised in that including internal combustion engine, air-conditioner set, organic rankine cycle system
And first generator and the second generator, wherein：
The internal combustion engine has clutch end and flue gas output end, and the clutch end is connected with the first generator；
The air-conditioner set is connected with the flue gas output end；
The organic rankine cycle system includes the evaporator, expanding machine, condenser and the working medium pump that are sequentially connected by pipeline, institute
Stating has working medium in pipeline, the evaporator is connected with the flue gas output end, and the expanding machine is connected with the second generator.
2. CCHP energy supplying system as claimed in claim 1, it is characterised in that also including boiler and/or refrigeration machine.
3. CCHP energy supplying system as claimed in claim 1, it is characterised in that also connected including the cylinder sleeve with internal combustion engine
First Heat Exchanger.
4. CCHP energy supplying system as claimed in claim 3, it is characterised in that also including the second heat exchanger, described
Two heat exchangers have the hot flow path that is isolated and cold runner, and the hot flow path is connected with First Heat Exchanger, the cold runner with build
The heat supply backwater channel connection built.
5. CCHP energy supplying system as claimed in claim 3, it is characterised in that the air-conditioner set and First Heat Exchanger
Output end of hot water connection.
6. CCHP energy supplying system as claimed in claim 2, it is characterised in that also include：
Temperature sensor, is arranged at interior, for detecting indoor temperature information；
Controller, respectively with internal combustion engine, air-conditioner set, organic rankine cycle system, boiler, refrigeration machine and temperature sensor electricity
Connection, is used for
When first temperature threshold of the indoor temperature less than setting, control internal combustion engine, air-conditioner set and boiler are opened, and control sky
Unit is adjusted to be in heat supply working condition, while controlling organic rankine cycle system and refrigeration machine to shut down；
When indoor temperature not less than setting the first temperature threshold and less than setting second temperature threshold value when, control internal combustion engine with
Air-conditioner set is opened, and controls air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When indoor temperature not less than setting second temperature threshold value and less than setting three temperature thresholds when, control internal combustion engine with
Organic rankine cycle system is opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature not less than setting the 3rd temperature threshold and less than setting four temperature thresholds when, control internal combustion engine with
Air-conditioner set is opened, and controls air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When four temperature threshold of the indoor temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled
Air-conditioner set processed is in cooling working condition, while controlling organic rankine cycle system and boiler down；
Wherein, the first temperature threshold, second temperature threshold value, the 3rd temperature threshold and the 4th temperature threshold need to meet：First temperature
Threshold value, second temperature threshold value, the 3rd temperature threshold and the 4th temperature threshold increase successively.
7. a kind of CCHP energy supply method, it is characterised in that including：
Obtain current indoor temperature information；
When indoor temperature not less than setting the first temperature threshold and less than setting second temperature threshold value when, control internal combustion engine with
Air-conditioner set is opened, and controls air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When indoor temperature not less than setting second temperature threshold value and less than setting three temperature thresholds when, control internal combustion engine with
Organic rankine cycle system is opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature not less than setting the 3rd temperature threshold and less than setting four temperature thresholds when, control internal combustion engine with
Air-conditioner set is opened, and controls air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down.
8. CCHP energy supply method as claimed in claim 7, it is characterised in that also include：
When first temperature threshold of the indoor temperature less than setting, control internal combustion engine, air-conditioner set and boiler are opened, and control sky
Unit is adjusted to be in heat supply working condition, while controlling organic rankine cycle system and refrigeration machine to shut down.
9. CCHP energy supply method as claimed in claim 7, it is characterised in that also include：
When four temperature threshold of the indoor temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled
Air-conditioner set processed is in cooling working condition, while controlling organic rankine cycle system and boiler down.
10. a kind of CCHP power supply device, it is characterised in that including：
Acquisition equipment, for obtaining indoor temperature information；
Control device, is used for
When indoor temperature not less than setting the first temperature threshold and less than setting second temperature threshold value when, control internal combustion engine with
Air-conditioner set is opened, and controls air-conditioner set to be in heat supply working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When indoor temperature not less than setting second temperature threshold value and less than setting three temperature thresholds when, control internal combustion engine with
Organic rankine cycle system is opened, while controlling air-conditioner set, boiler and refrigeration machine to shut down；
When indoor temperature not less than setting the 3rd temperature threshold and less than setting four temperature thresholds when, control internal combustion engine with
Air-conditioner set is opened, and controls air-conditioner set to be in cooling working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down.
11. CCHP power supply devices as claimed in claim 10, it is characterised in that the control device, further use
When first temperature threshold of the indoor temperature less than setting, control internal combustion engine, air-conditioner set and boiler are opened, and control air-conditioning
Unit is in heat supply working condition, while controlling organic rankine cycle system and refrigeration machine to shut down.
12. CCHP power supply devices as claimed in claim 10, it is characterised in that the control device, further use
When four temperature threshold of the indoor temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled
Air-conditioner set is in cooling working condition, while controlling organic rankine cycle system and boiler down.
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| CN106930827B (en) | 2019-07-16 |
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