CN108151369A - Earth source heat pump level guard system buried with vertical combined type and applicability determination method - Google Patents
Earth source heat pump level guard system buried with vertical combined type and applicability determination method Download PDFInfo
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- CN108151369A CN108151369A CN201810113889.2A CN201810113889A CN108151369A CN 108151369 A CN108151369 A CN 108151369A CN 201810113889 A CN201810113889 A CN 201810113889A CN 108151369 A CN108151369 A CN 108151369A
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- pipe
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- peak value
- soil
- pipe laying
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000020509 sex determination Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention belongs to soil source heat pump technical field, to propose a kind of level and the buried guard system of vertical combined type based on soil heat balance, reduce and realize the thermal balance of soil for the purpose of initial cost and raising system operation efficiency.For this purpose, of the invention, the step of earth source heat pump level guard system buried with vertical combined type and applicability determination method, judgement, is as follows：(1) perpendicularly buried pipe quantity is determined according to winter peak value thermic load；(2) the maximum cooling and heating load for maximum horizontal pipe laying quantity being determined according to perpendicularly buried pipe floor space and being undertaken；(3) check whether the perpendicularly buried pipe quantity meets summer peak value refrigeration duty demand；(4) it checks perpendicularly buried pipe and is operated together whether meet summer peak value refrigeration duty demand with horizontal coiled pipe；(5) the peak value thermic load in part winter is undertaken using horizontal coiled pipe；(6) critical item is applicable in the hybrid systems, and otherwise critical item does not apply to the hybrid systems.Present invention is mainly applied to soil source heat pumps to manufacture and design occasion.
Description
Technical field
The invention belongs to soil source heat pump technical fields, and in particular to one kind is suitable for the cold district middle and south and Xia Redong
The buried guard system of combined type of cryogenic region.
Background technology
Ground source heat pump technology is a renewable energy technologies efficiently, environmentally friendly, wherein with ground pipe heat pump system application
It is the most universal.
Ground pipe heat pump system is called soil source heat pump system, refers to carry out heat exchange using ground heat exchanger and soil
Heat pump system, which mainly has rectilinear and two kinds of horizontal.Horizontal ground pipe heat-exchange system is by burying
Be placed in 2m~4m below ground surface horizontal coiled pipe and soil carry out it is cold and hot exchange, rectilinear buried pipe heat exchange system passes through vertical
Drilling, will heat exchange underground pipe be embedded in the Rock And Soil of 50m~400m depth with soil carry out it is cold and hot exchange, general buried depth be 100m
~120m.Compared with Horizontal ground guard system, although rectilinear system initial cost and difficulty of construction are relatively high, take up an area
Area is smaller, and pipe laying Soil Surrounding temperature keeps relative stability throughout the year, and heat exchange efficiency is higher, therefore should in Practical Project
With extensive.
For rectilinear buried guard system, the thermal balance of soil largely influences system under longtime running
Operational effect.When system is from soil when heat and heat exhaust being taken to differ greatly, it is possible to Zinc fractions heat localization or cold product
It is poly-, that is, the longtime running soil moisture can continue raising or lasting reduction.When ground-source heat pump system cooling in summer adding up to soil
Heat exhaust much larger than Winter heat supply from soil accumulative take heat when, if the recovery capability of soil is not enough to offset this difference
It is different, it just will appear the soil moisture and increase year by year, the trend that system energy efficiency reduces year by year seriously affects refrigeration effect.Therefore, it realizes
The thermal balance of soil is most important for the Effec-tive Function for ensureing system.
When ground-source heat pump system freezes to be much larger than to the accumulative heat exhaust of soil in season heat is taken from the accumulative of soil for the hot season
When, in order to realize the thermal balance of soil, current Normal practice is the heat exhaust that a part of unit is undertaken using cooling tower, so as to
It reduces when unit freezes to the heat exhaust of soil, forms cooling tower earth source heat pump hybrid systems.
The cooperation of cooling tower and earth source heat pump can effectively alleviate the thermal unbalance problem of soil, improve unit operation
Efficiency.Heat transferring medium in cooling tower is cooling water and outdoor air, and heat transfer effect is affected by meteorologic factor, preferable item
The minimum leaving water temperature of cooling water under part is the wet-bulb temperature of outdoor air, economically generally takes 3~5 DEG C of cold panel height,
I.e. cooling tower leaving water temperature is higher than 3~5 DEG C of wet-bulb temperature.In the area based on refrigeration duty, usually exist for cold season wet-bulb temperature
Between 20 DEG C~30 DEG C, and underground 2m or so soil moistures are usually between 15 DEG C~23 DEG C, therefore from increase heat transfer temperature difference
Angle, if it is possible to substitute cooling tower using the shallower horizontal coiled pipe of buried depth and carry out thermal balance, can effectively reduce coolant water temperature
Degree improves unit efficiency.In consideration of it, the present invention proposes a kind of earth source heat pump level based on soil heat balance and vertical coupled formula
Underground pipe hybrid system form.
Invention content
In order to overcome the deficiencies of the prior art, for certain rectilinear ground pipe heat pump systems due to take/heat exhaust it is serious
Imbalance can cause the problem of soil heat localization, the present invention is directed to propose it is a kind of based on soil heat balance it is horizontal with it is vertical compound
The buried guard system of formula, instead of the hybrid systems of conventional cooling tower and perpendicularly buried pipe.With conventional cooling tower and perpendicularly buried pipe
Hybrid systems are compared, and the present invention realizes the thermal balance of soil for the purpose of reducing initial cost and improve system operation efficiency.
For this purpose, the technical solution adopted by the present invention is, earth source heat pump level and vertical combined type underground pipe system suitability determination method,
The buried guard system of combined type is using the parallel way of horizontal pipe laying and rectilinear pipe laying, horizontal pipe laying and rectilinear pipe laying
Series system or horizontal pipe laying and rectilinear pipe laying respective independent connection mode；For parallel, pass through valve
3 kinds of methods of operation are realized in door opening and closing switching：It is perpendicularly buried pipe isolated operation that first valve opening and second valve, which are closed,；The
One valve is closed and second valve opening is horizontal coiled pipe isolated operation；First, second valve while unlatching are water
Flat and perpendicularly buried pipe heat exchange cooperation；For being connected in series with mode, switched by valve opening and closing and realize 2 kinds of methods of operation：The
It is perpendicularly buried pipe isolated operation that one valve opening and second valve, which are closed,；First valve is closed and second valve opening
For horizontal and perpendicularly buried pipe heat exchange cooperation；The step of combined type underground pipe system suitability judges is as follows：
(1) perpendicularly buried pipe quantity is determined according to winter peak value thermic load；
(2) the maximum cooling and heating load for maximum horizontal pipe laying quantity being determined according to perpendicularly buried pipe floor space and being undertaken；
(3) check whether the perpendicularly buried pipe quantity meets summer peak value refrigeration duty demand, such as meet demand performs step 5；
(4) it checks perpendicularly buried pipe and is operated together whether meet summer peak value refrigeration duty demand with horizontal coiled pipe, such as meet need
It asks, performs step 6, otherwise critical item does not apply to the hybrid systems；
(5) from initial cost angle is saved, the peak value thermic load in part winter is undertaken using horizontal coiled pipe, with peak value thermic load
The thermic load that the thermic load difference undertaken with horizontal coiled pipe undertakes as perpendicularly buried pipe, recalculate under peak value thermic load needed for
Perpendicularly buried pipe quantity；
(6) according to the applicability of the thermal balance sex determination of the soil hybrid systems, when soil Wen Sheng is not in the operation time limit
More than threshold value is allowed, critical item is applicable in the hybrid systems, and otherwise critical item does not apply to the hybrid systems.
Earth source heat pump level and the buried guard system of vertical combined type, are made of horizontal pipe laying and rectilinear pipe laying, horizontal
Formula pipe laying is connected in parallel with rectilinear pipe laying.
The features of the present invention and advantageous effect are：
A kind of level and the buried guard system of vertical combined type based on soil heat balance proposed by the present invention, horizontal coiled pipe is not
The heat exhaust that unit can be only born in cooling condition carries out the thermal balance of soil, and can be held under peak value thermic load in winter
It carries on a shoulder pole a part of unit and takes heat, to a certain extent pipe laying quantity needed for reduction, realize Double-working-condition operation, reduce initial cost.
Description of the drawings：
The parallel schematic diagram of Fig. 1 horizontal coiled pipes and perpendicularly buried pipe.
Fig. 2 horizontal coiled pipes and perpendicularly buried pipe are connected in series with schematic diagram.
The independent connection schematic diagram of Fig. 3 horizontal coiled pipes and perpendicularly buried pipe.In figure：
1 heat pump unit, 2 user, 3 rectilinear 4 Horizontal ground pipe of underground pipe
5 user side water pump, 6 ground source perpendicularly buried pipe water pump, 7 ground source horizontal coiled pipe water pump
8 heat exchangers 9,10 valves.
Specific embodiment
The characteristics of taking heat more than winter for the cold district middle and south and hot-summer and cold-winter area summer heat exhaust, the present invention
It proposes a kind of level and the buried guard system of vertical combined type based on soil heat balance, bears a part of machine using horizontal pipe laying
The heat exhaust of group cooling in summer, realizes the soil heat balance of rectilinear pipe laying system, while undertaken under peak value thermic load in winter
A part of unit takes heat, to a certain extent pipe laying quantity needed for reduction.
Ground source heat-exchange system includes horizontal coiled pipe and perpendicularly buried pipe two parts, should premised on not increasing floor space
One of feature of hybrid systems is that horizontal coiled pipe is arranged in above perpendicularly buried pipe, it is possible thereby to determine the maximum number of horizontal coiled pipe
The cooling and heating load that measure, undertakes and accumulative take/heat exhaust.
Parallel way (see Fig. 1), series system may be used (see figure in horizontal pipe laying and the connection mode of rectilinear pipe laying
2) or independent connection mode (see Fig. 3).For being connected in parallel, it can be switched by the opening and closing of valve 9 and 10 and realize 3 kinds of operation sides
Formula：Valve 9 is opened and valve 10 is closed as perpendicularly buried pipe isolated operation；Valve 9 is closed and valve 10 is opened as horizontal coiled pipe list
Solely operation；Valve 9 and 10 while unlatching are horizontal and perpendicularly buried pipe heat exchange cooperation.For being connected in series with, valve can be passed through
2 kinds of methods of operation are realized in the opening and closing switching of door 9 and 10：Valve 9 is opened and valve 10 is closed as perpendicularly buried pipe isolated operation；Valve
9 closings and valve 10 are opened as horizontal and perpendicularly buried pipe heat exchange cooperation
The key step that the hybrid systems are applicable in sex determination is as follows：
(1) perpendicularly buried pipe quantity is determined according to winter peak value thermic load；
(2) the maximum cooling and heating load for maximum horizontal pipe laying quantity being determined according to perpendicularly buried pipe floor space and being undertaken；
(3) check whether the perpendicularly buried pipe quantity meets summer peak value refrigeration duty demand, such as meet demand performs step 5；
(4) it checks perpendicularly buried pipe and is operated together whether meet summer peak value refrigeration duty demand with horizontal coiled pipe, such as meet need
It asks, performs step 6, otherwise critical item does not apply to the hybrid systems；
(5) from initial cost angle is saved, the peak value thermic load in part winter is undertaken using horizontal coiled pipe, with peak value thermic load
The thermic load that the thermic load difference undertaken with horizontal coiled pipe undertakes as perpendicularly buried pipe, recalculate under peak value thermic load needed for
Perpendicularly buried pipe quantity；
(6) according to the applicability of the thermal balance sex determination of the soil hybrid systems, when soil Wen Sheng is not in the operation time limit
More than threshold value is allowed, critical item is applicable in the hybrid systems, and otherwise critical item does not apply to the hybrid systems.
Claims (2)
1. a kind of earth source heat pump level and vertical combined type underground pipe system suitability determination method, it is characterized in that, combined type
Pipe laying system is the side of series connection using the parallel way of horizontal pipe laying and rectilinear pipe laying, horizontal pipe laying and rectilinear pipe laying
The respective independent connection mode of formula or horizontal pipe laying and rectilinear pipe laying；For parallel, cut by valve opening and closing
It changes and realizes 3 kinds of methods of operation：It is perpendicularly buried pipe isolated operation that first valve opening and second valve, which are closed,；First valve
Close and second valve opening be horizontal coiled pipe isolated operation, first, second valve open simultaneously for it is horizontal with it is vertical
Imbedded pipe heat-exchanging cooperation；For being connected in series with mode, switched by valve opening and closing and realize 2 kinds of methods of operation：First valve
It opens and second valve is closed as perpendicularly buried pipe isolated operation；First valve close and second valve opening for it is horizontal with
Perpendicularly buried pipe heat exchange cooperation；The step of combined type underground pipe system suitability judges is as follows：
(1) perpendicularly buried pipe quantity is determined according to winter peak value thermic load；
(2) the maximum cooling and heating load for maximum horizontal pipe laying quantity being determined according to perpendicularly buried pipe floor space and being undertaken；
(3) check whether the perpendicularly buried pipe quantity meets summer peak value refrigeration duty demand, such as meet demand performs step 5；
(4) it checks perpendicularly buried pipe and is operated together whether meet summer peak value refrigeration duty demand with horizontal coiled pipe, such as meet demand is held
Row step 6, otherwise critical item do not apply to the hybrid systems；
(5) from initial cost angle is saved, the peak value thermic load in part winter is undertaken using horizontal coiled pipe, with peak value thermic load and water
The thermic load that the thermic load difference that flat pipe laying undertakes undertakes as perpendicularly buried pipe, recalculate under peak value thermic load needed for it is vertical
Pipe laying quantity；
(6) according to the applicability of the thermal balance sex determination of the soil hybrid systems, when soil Wen Sheng is no more than in the operation time limit
Allow threshold value, critical item is applicable in the hybrid systems, and otherwise critical item does not apply to the hybrid systems.
2. a kind of earth source heat pump level and the buried guard system of vertical combined type, it is characterized in that, it is buried by horizontal pipe laying with rectilinear
Pipe is formed, and horizontal pipe laying is connected in parallel with rectilinear pipe laying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810113889.2A CN108151369A (en) | 2018-02-05 | 2018-02-05 | Earth source heat pump level guard system buried with vertical combined type and applicability determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810113889.2A CN108151369A (en) | 2018-02-05 | 2018-02-05 | Earth source heat pump level guard system buried with vertical combined type and applicability determination method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108151369A true CN108151369A (en) | 2018-06-12 |
Family
ID=62459632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810113889.2A Pending CN108151369A (en) | 2018-02-05 | 2018-02-05 | Earth source heat pump level guard system buried with vertical combined type and applicability determination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108151369A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100200192A1 (en) * | 2007-06-26 | 2010-08-12 | Climatisation Par Puits Canadiens | Buried vertical threaded exchanger for heating or cooling apparatus |
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| CN105258395A (en) * | 2015-10-10 | 2016-01-20 | 西安交通大学 | Combined type soil source heat pump system and control method |
| CN105488612A (en) * | 2015-11-24 | 2016-04-13 | 武汉科技大学 | Monte-Carlo method based reliability analysis method for buried vertical pipe of ground source heat pump |
| CN106886661A (en) * | 2017-03-24 | 2017-06-23 | 珠海格力电器股份有限公司 | Underground pipe optimization method and system based on seasonal thermal energy storage |
-
2018
- 2018-02-05 CN CN201810113889.2A patent/CN108151369A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100200192A1 (en) * | 2007-06-26 | 2010-08-12 | Climatisation Par Puits Canadiens | Buried vertical threaded exchanger for heating or cooling apparatus |
| CN101916094A (en) * | 2010-07-28 | 2010-12-15 | 南京工业大学 | Ground source heat pump early warning controller and control method thereof |
| CN102679619A (en) * | 2011-03-09 | 2012-09-19 | 北京建筑工程学院 | Solar heat storage-ground source heat pump integrated system based on rainwater storage/infiltration |
| CN202204208U (en) * | 2011-07-27 | 2012-04-25 | 挪信能源技术（上海）有限公司 | Combined-type ground source heat pump system for surface water peak regulation |
| CN202546961U (en) * | 2012-03-07 | 2012-11-21 | 天津市滨海新区九马能源工程技术有限公司 | Self siphoning type heat-cold compensation system of ground source heat pump |
| CN103438611A (en) * | 2013-07-26 | 2013-12-11 | 西安交通大学 | Optimized design method of solar ground source heat pump system |
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| CN105488612A (en) * | 2015-11-24 | 2016-04-13 | 武汉科技大学 | Monte-Carlo method based reliability analysis method for buried vertical pipe of ground source heat pump |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |
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