CN104268388B - The metering method of equivalent energy consumption in a kind of thermal energy exchange - Google Patents
The metering method of equivalent energy consumption in a kind of thermal energy exchange Download PDFInfo
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- CN104268388B CN104268388B CN201410482702.8A CN201410482702A CN104268388B CN 104268388 B CN104268388 B CN 104268388B CN 201410482702 A CN201410482702 A CN 201410482702A CN 104268388 B CN104268388 B CN 104268388B
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Abstract
The invention discloses a kind of metering methods of equivalent energy consumption in thermal energy exchange, according to conservation of energy principle, measure wind turbine wind speed and air-admitting surface using measuring device, calculate the volume of air of unit interval indoor and outdoor exchange；The volume of air exchanged according to atmospheric density and unit interval indoor and outdoor obtains the air quality exchanged the corresponding unit interval；Measure the temperature value that air inlet and air outlet go out using temperature measuring equipment, the temperature value that is gone out according to air inlet and air outlet and the air matter that exchanges of unit interval obtain the heat that the progress heat exchange of unit interval wind turbine is taken away；According to the efficiency ratio of air-conditioning, the electric energy consumed due to the heat that air conditioner refrigerating generation effect same, that is, unit interval wind turbine progress heat exchange is taken away is further obtained；Corresponding electric energy is converted into CO2 emissions and obtains unit interval practical reduction CO2 emissions.
Description
Technical field
The present invention relates to metering fields, and in particular to the metering method of equivalent energy consumption in a kind of thermal energy exchange.
Background technology
The common method of metering of current equivalent energy consumption is comparison method, main two kinds of forms, is lateral comparison respectively and vertical
To comparing.So-called lateral comparison refers in two confined spaces under condition is identical, using different constant temperature strategies, through one section
Time measures, and calculates separately the energy consumed by thermostatic equipment in two confined spaces, to obtain two kinds of thermostatic equipment consumption
The equivalence value of energy.This method is disadvantageous in that under the conditions of engineer application, it is difficult to which it is identical to find inside and outside portion's condition
Two confined spaces the energy of thermostatic equipment actual consumption is led to not due to the difference that external temperature and internal heat are discharged
It is comparable, it is difficult to obtain accurate equivalent numerical value with lateral comparison approach.Longitudinal comparison method refers in the same confined space
In, two different constant temperature strategies are used in two different periods, calculate separately two periods is set by different constant temperature
The energy of standby consumption, to obtain the equivalence value of two kinds of thermostatic equipment consumption energy.Obviously, this method, which equally exists, to protect
Internal and external condition is identical in the two periods that card is chosen, and obtained numerical value does not have firmly believing property yet.There is presently no
The metering method of deliberation, the equivalent energy consumption for facilitating application in practice is stood in theory.
Invention content
To solve the shortcomings of the prior art, the invention discloses a kind of metering sides of equivalent energy consumption in thermal energy exchange
Method, this method is relatively closed and constantly have the interior space of heat generation, such as communications equipment room, substation, due to outside
Lower temperature air enters inner space under the action of wind turbine, lost during forcing hot inside air discharge outdoor
Heat is converted into the energy values consumed by the effect same that air conditioner refrigerating obtains, and energy refers mainly to electric energy here.To
The numerical value that CO2 emissions are reduced in certain time can be further calculated.
To achieve the above object, concrete scheme of the invention is as follows：
The metering method of equivalent energy consumption, includes the following steps in a kind of thermal energy exchange：
Step 1：Wind turbine, effect of the external lower temperature air in wind turbine are provided in the relatively closed interior space
It is lower to enter inner space, force hot inside air discharge outdoor；
Step 2：According to conservation of energy principle, wind turbine wind speed and air-admitting surface are measured using measuring device, calculates list
The volume of air that position time indoor and outdoor exchanges；
Step 3：The volume of air that the unit interval indoor and outdoor obtained according to atmospheric density and step 2 exchanges is corresponded to
Unit interval exchange air quality；
Step 4：Measure the temperature value that air inlet and air outlet go out using temperature measuring equipment, according to air inlet with
The air quality that the unit interval that the temperature value of air outlet, the specific heat capacity of air and step 3 obtain exchanges, obtains the unit interval
Wind turbine carries out the heat that heat exchange is taken away；
Step 5：According to the efficiency ratio of air-conditioning, further obtain since air conditioner refrigerating generates effect same, i.e., in step 4
Unit interval wind turbine carries out the heat taken away of heat exchange and the electric energy that consumes；
Step 6：By the corresponding electric energy of step 5 be converted into CO2 emissions obtain the unit interval it is practical reduce two
Aoxidize carbon emission amount.
Specific calculation formula is in the step 2：
V=S*v
Wherein, the volume of air that V unit interval indoor and outdoors exchange, S is the area of air outlet, and v is the wind speed of wind turbine mouth.
Corresponding formula is in the step 3：
M=ρ V
Wherein, m is the air quality exchanged the unit interval, and ρ is atmospheric density, the air that V unit interval indoor and outdoors exchange
Volume.
Corresponding formula is in the step 4：
Q=Cm (T1-T2)
Wherein, Q is the heat taken away the unit interval, and C is the specific heat capacity of air, and m is the air quality exchanged the unit interval,
T1It is air outlet temperature, T2It is intake air temperature.
The numerical value that air condition system supplier saving of time electric energy E (kw.h) is obtained because of ventilation is calculated in the step 5 by following formula：
Wherein, d is efficiency ratio, and Q is the heat taken away the unit interval；
Since blower fan work consumes additional energy, the unit interval, practical electric energy of saving should subtract the electricity of wind turbine consumption
Energy.If the power of wind turbine is P (kw), the unit interval, practical saving electric energy Et was
Et=E-P/ (3.6*103) (kw.h/s).
In the step 6, CO2 emissions are converted into, are corresponded to by the energy of 0.997kg/kw.h, that is, 1kw.h
0.997kg carbon dioxide calculates, unit interval practical reduction CO2 emissions 0.997*Et(kg/s)。
Beneficial effects of the present invention：
Under the application background of energy-saving and emission-reduction, when energy saving purpose can be reached in theory using a kind of new technology, and
When practical energy saving numerical value can not accurately be measured by being limited to application conditions, it is possible to the approval using unit is unable to get, to limit
The popularization and application of this new technology.The present invention is directed to design a kind of equivalent energy measuring equipment, accurately measure due to new skill
The application of art and the electric energy saved make to approve measured value using unit and technical innovation exploiting entity, for because saving electricity
Can and generate benefits distribution provide foundation.Because of this interests true, excitation unit and new technology can be applied significantly
Popularization and application of the exploiting entity to new power-saving technology are invented, there is good social value and economic value.
Description of the drawings
Fig. 1 the principle of the present invention schematic diagrames；
The realization schematic diagram of Fig. 2 present invention.
Specific implementation mode：
The present invention is described in detail below in conjunction with the accompanying drawings：
As shown in Figure 1, thermal energy exchange gauge is used for measuring in the relatively closed and continuous interior space for having heat generation
In, since external lower temperature air enters inner space under the action of wind turbine, force the mistake of hot inside air discharge outdoor
Cheng Zhong, dispersed heat is converted into the electric energy numerical value consumed by the effect same that air conditioner refrigerating obtains, and then obtains certain section
The numerical value of CO2 emissions is reduced in time.
Operation principle：
Unit interval room is calculated by following formula by measuring wind turbine wind speed and air-admitting surface according to conservation of energy principle
The volume of air of inside and outside exchange：
V=S*v
Here the volume of air that V unit interval indoor and outdoors exchange, S is the area of air outlet, and v is the wind speed of wind turbine mouth.
Air quality is calculated by following formula according to atmospheric density：
M=ρ V
Here m is the air quality exchanged the unit interval, and ρ is atmospheric density, the air body that V unit interval indoor and outdoors exchange
Product.
Measure the temperature value that air inlet and air outlet go out respectively again, obtain the unit interval according to following formula is taken away by air
Heat：
Q=Cm (T1-T2)
Here Q is the heat taken away the unit interval, and C is the specific heat capacity of air, and m is the air quality exchanged the unit interval,
T1It is air outlet temperature, T2It is intake air temperature.
The specific heat capacity and density of air take value when 20 degrees Celsius of standard atmospheric pressure under normal humidity, i.e. C=1.01kJ/
(kg DEG C), density p=1.205kg/m of air3。
The unit interval is being obtained due to ventilation equipment, make indoor temperature decline and after lost total heat, according to air-conditioning
Efficiency ratio, can further obtain due to air conditioner refrigerating generates effect same and the electric energy that consumes, if air-conditioning is imitated by 2 grades of energy
Rate calculates, i.e. efficiency ratio d=3.2, and the number that air condition system supplier saving of time electric energy E (kw.h) is obtained because of ventilation is calculated by following formula
Value：
If power of fan is P (kw), unit interval practical saving electric energy is Et=E-P/ (3.6*103)(kw.h/s)
CO2 emissions are converted into, are calculated by 0.997kg/kw.h, unit interval practical reduction CO2 emission
Measure 0.997*Et(kg/s)。
It illustrates：Air outlet temperature T1=35 DEG C, intake air temperature T2=20 DEG C, air inlet area S=
0.04m2, wind turbine wind speed v=4m/s, exhaust equipment power P=0.1kw；
Then：The volume of air that unit interval indoor and outdoor exchanges：V=S*v=0.04*4=0.16 (m3/s)；
The air quality that unit interval exchanges：
M=ρ V=1.205*0.16=0.1928 (kg/s)；
Heat Q=Cm (the T that unit interval is taken away1-T2)=1.01*0.1928* (35-20)=2.92 (kJ/s)
The numerical value of air condition system supplier saving of time electric energy E (kw.h) is obtained because of ventilation:
E=Q/ (d*3.6*103(the 3.2*3.6*10 of)=2.92/3)=2.54*10-4(kw.h/s)
Unit interval practical saving electric energy:Et=E-P/ (3.6*103)=2.54*10-4-0.1/(3.6*103)=2.26*
10-4(kw.h/s), i.e., saving electric energy per second is 2.26*10-4kw.h.Annual to be calculated by using 8 months, annual electric energy of saving is
2.26*10-4* 3600*24*245=4784 (kw.h), annual practical reduction CO2 emissions：0.997*4784=
4769kg。
As shown in Fig. 2, the temperature value gone out by temperature sensor air inlet and air outlet, air velocity transducer measures wind turbine wind
Speed, humidity sensor is located at air inlet, and for measuring outside air humidity, the parameter is for calculating current air specific heat
Hold, sees formula Q=Cm (T1-T2), temperature value, wind turbine wind speed and humidity value are sent to control circuit, control circuit and clock circuit
It is connected, the output of control circuit is connected with liquid crystal display, and control circuit is also connected by communication interface with other communication equipments,
Control circuit is also connected with acousto-optic warning unit, when due to air inlet filter net jam, when specified value is not achieved in intake, sound
Light alarm unit work starts onsite alarming, while transmitting fault message to host computer by communication interface.
The application utilizes conservation of energy principle, measurement to exchange dispersed heat since blower fan work forms hot and cold air, turn
Chemical conversion air conditioner refrigerating obtains the electric energy that same effect needs.
Claims (1)
1. the metering method of equivalent energy consumption in a kind of thermal energy exchange, characterized in that include the following steps：
Step 1：Be provided with wind turbine in the relatively closed interior space, external lower temperature air under the action of wind turbine into
Enter inner space, forces hot inside air discharge outdoor；
Step 2：According to conservation of energy principle, wind turbine wind speed and air-admitting surface are measured using measuring device, using following formula
Calculate the volume of air of unit interval indoor and outdoor exchange：
V=S*v；
Step 3：The volume of air that the unit interval indoor and outdoor obtained according to atmospheric density and step 2 exchanges obtains corresponding list
The air quality that the position time exchanges, specifically：
M=ρ V；
Step 4：Air inlet and the temperature value at air outlet are measured using temperature measuring equipment, according to air inlet and outlet air
The air quality that the unit interval that temperature value and step 3 at mouthful obtain exchanges obtains unit interval wind turbine and carries out heat exchange
The heat taken away, specifically：
Q=Cm (T1-T2)；
Step 5：According to the efficiency ratio of air-conditioning, further obtained using following formula since air conditioner refrigerating generation effect same is
Unit interval wind turbine carries out the heat taken away of heat exchange and the electric energy that consumes in step 4：
If power of fan is P (kw), unit interval practical saving electric energy EtFor Et=E-P/ (3.6*103)(kw.h/s)；
Step 6：The corresponding electric energy of step 5 is converted into CO2 emissions and obtains unit interval practical reduction titanium dioxide
Carbon emission amount；
Wherein, V is the volume of air that unit interval indoor and outdoor exchanges, and S is the area of air outlet, and v is the wind speed of wind turbine mouth, and m is
The air quality that unit interval exchanges, ρ is atmospheric density, and Q is the heat taken away the unit interval, and C is the specific heat capacity of air, T1It is
Air outlet temperature, T2It is intake air temperature, d is efficiency ratio；
In the step 6, CO2 emissions are converted into, 0.997kg is corresponded to by the energy of 0.997kg/kw.h, that is, 1kw.h
Carbon dioxide calculates, unit interval practical reduction CO2 emissions 0.997*Et(kg/s)。
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| CN108224675B (en) * | 2017-12-29 | 2020-04-10 | 北京世纪互联宽带数据中心有限公司 | Method and device for reducing power consumption |
| DE102018105063A1 (en) | 2018-03-06 | 2019-09-12 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Apparatus and method for air volume detection |
| CN111289908A (en) * | 2020-03-31 | 2020-06-16 | 深圳埃瑞斯瓦特新能源有限公司 | Method for measuring and calculating heating power of lithium battery |
| CN113916292A (en) * | 2021-10-09 | 2022-01-11 | 中国科学技术大学 | Full-size house fire behavior measurement system and test method |
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| CN1825010A (en) * | 2006-01-17 | 2006-08-30 | 王妍 | Heat exchange system for saving energy and heat exchange method thereof |
| CN101509684A (en) * | 2009-03-10 | 2009-08-19 | 尹宏文 | Communication equipment room energy-conserving system |
| CN201327143Y (en) * | 2008-10-08 | 2009-10-14 | 蒲忠义 | Air exchange system for unmanned communication room |
| CN102878649A (en) * | 2012-09-11 | 2013-01-16 | 毛振刚 | Intelligent ventilated energy-saving system for base station |
| CN103158485A (en) * | 2011-12-12 | 2013-06-19 | 北京汽车股份有限公司 | Automobile air conditioning system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006153332A (en) * | 2004-11-26 | 2006-06-15 | Matsushita Electric Ind Co Ltd | Outdoor unit for air conditioner |
| CN102213484A (en) * | 2011-05-30 | 2011-10-12 | 通力盛达能源设备（北京）有限公司 | Air heat exchange device, manufacturing method thereof and air heat exchange air-conditioning all-in-one device |
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|---|---|---|---|---|
| CN1825010A (en) * | 2006-01-17 | 2006-08-30 | 王妍 | Heat exchange system for saving energy and heat exchange method thereof |
| CN201327143Y (en) * | 2008-10-08 | 2009-10-14 | 蒲忠义 | Air exchange system for unmanned communication room |
| CN101509684A (en) * | 2009-03-10 | 2009-08-19 | 尹宏文 | Communication equipment room energy-conserving system |
| CN103158485A (en) * | 2011-12-12 | 2013-06-19 | 北京汽车股份有限公司 | Automobile air conditioning system and control method thereof |
| CN102878649A (en) * | 2012-09-11 | 2013-01-16 | 毛振刚 | Intelligent ventilated energy-saving system for base station |
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