CN102620482B - Seasonal soil heat recovery system of cooling tower - Google Patents
Seasonal soil heat recovery system of cooling tower Download PDFInfo
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- CN102620482B CN102620482B CN201210103729.2A CN201210103729A CN102620482B CN 102620482 B CN102620482 B CN 102620482B CN 201210103729 A CN201210103729 A CN 201210103729A CN 102620482 B CN102620482 B CN 102620482B
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- 239000002689 soil Substances 0.000 title claims abstract description 118
- 238000001816 cooling Methods 0.000 title claims abstract description 75
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 230000001932 seasonal effect Effects 0.000 title claims abstract description 15
- 238000004378 air conditioning Methods 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 230000001105 regulatory effect Effects 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 abstract description 11
- 230000007704 transition Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009183 running Effects 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The invention discloses a seasonal soil heat recovery system of a cooling tower, solves the problem that the soil 'hot stack' phenomenon is possibly caused when a soil source heat pump technology is adopted as the summer cold load is more than the winter heat load in buildings, and belongs to the field of building air conditioning. A part of non-balanced winter soil heat is emitted to the atmospheric environment in summer through the cooling tower in combination with the heat and moisture transfer principle and the full-year cooling operation characteristic of the cooling tower; and the rest part is emitted by coupling of the cooling tower and the ground heat exchanger in a transition season, and outdoor natural cold sources are complemented into the ground alternately so as to fulfill the purpose of full-year cold and hot load balance in the soil, so that a new method and a new way are provided for high-efficiency application of the soil source heat pump technology. In the seasonal soil heat recovery system for the cooling tower, the selection calculation of the cooling tower can be determined according to the full-year cold and hot load non-balance ratio of the buildings, the regional outdoor weather conditions of the buildings and the design calculation method of the soil source heat pump system.
Description
Technical field
The present invention relates to a kind of solution because building refrigeration duty in summer is greater than thermic load in winter, adopt soil source heat pump technology likely to cause the new technology system of soil " hot stack " problem, belong to building air conditioning field.
Background technology
The summer cooling load of south China area civil buildings or large commercial office building is often greater than heat load of heating system in winter, for the building that adopts soil source heat pump system, summer, ground source heat pump condenser will be greater than the cold that winter, ground source heat pump evaporimeter discharged to soil to the heat of soil discharge, cause soil " hot stack ", the soil moisture to rise year by year, the Energy Efficiency Ratio of ground source heat pump constantly declines.
About soil " hot stack " problem, abroad since the nineties in 20th century correlative study.Be mainly around setting up auxiliary radiating device, when ground heat exchanger outlet water temperature exceedes design temperature, start the method for auxiliary radiating device; Or adopt the method for hybrid soil source heat pump system; Or utilize cooling tower to assist the method for cooling soil source heat pump system condensation heat, carried out related application research, but all because being subject to the restriction of technological adaptability and application conditions, and do not applied preferably.
Summary of the invention
The object of the invention is to propose a kind of new technical system---the seasonal Soil Thermal recovery technology of cooling tower, for the efficient application of soil source heat pump technology provides a kind of new method and approach.Wherein the type selection calculation of cooling tower can be determined according to the design and calculation method of the annual cooling and heating load unbalance factor of designed building, building location outdoor weather condition and soil source heat pump system.
The seasonal Soil Thermal recovery system of cooling tower, is characterized in that:
Include ground source heat pump (ground source heat pump comprises soil side heat exchanger and air-conditioning side heat exchanger), soil side pipe-line system main pipe, soil side water pump, the first valve, the second valve, ground heat exchanger, electric three-way regulating valves, building air conditioning end-equipment, water pump of air conditioner, air-conditioning side pipe-line system main pipe, plate type heat exchanger, open cooling tower, cooling water pump, cooling tower pipe-line system main pipe;
After the soil side heat exchanger of ground source heat pump is connected with the first valve, then in parallel with the second valve, after the pipeline after parallel connection be arranged on ground heat exchanger in subterranean well, be arranged on the tributary pipeline a of the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump and form one of closed circuit; Simultaneously, the soil side heat exchanger of ground source heat pump is connected rear, then in parallel with the second valve with the first valve, the pipeline after parallel connection and the primary side of plate type heat exchanger, the tributary pipeline b that is arranged on the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump form two of closed circuit; The secondary side of plate type heat exchanger be arranged on the open cooling tower of cooling tower pipe-line system main pipe and cooling water pump and form three of closed circuit;
The air-conditioning side heat exchanger of ground source heat pump forms closed circuit with the water pump of air conditioner, the building air conditioning end-equipment that are arranged on air-conditioning side pipe-line system main pipe.
The seasonal Soil Thermal recovery system of another kind of cooling tower, is characterized in that:
Include ground source heat pump (ground source heat pump comprises soil side heat exchanger and air-conditioning side heat exchanger), soil side pipe-line system main pipe, soil side water pump, the first valve, the second valve, ground heat exchanger, electric three-way regulating valves, building air conditioning end-equipment, water pump of air conditioner, air-conditioning side pipe-line system main pipe, closed cooling tower;
After the soil side heat exchanger of ground source heat pump is connected with the first valve, then in parallel with the second valve, after the pipeline after parallel connection be arranged on ground heat exchanger in subterranean well, be arranged on the tributary pipeline a of the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump and form one of closed circuit; Simultaneously, the soil side heat exchanger of ground source heat pump is connected rear, then in parallel with the second valve with the first valve, the pipeline after parallel connection and closed cooling tower, the tributary pipeline b that is arranged on the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump form two of closed circuit;
The air-conditioning side heat exchanger of ground source heat pump forms closed circuit with the water pump of air conditioner, the building air conditioning end-equipment that are arranged on air-conditioning side pipe-line system main pipe.
The present invention is in conjunction with the wet exchange principle of the heat of cooling tower and annual cooling operation characteristic, by winter soil balance not a part of summer of heat by cooling tower, drain into atmospheric environment; Remaining part transition season, by cooling tower and ground heat exchanger coupling operation, utilizes outdoor natural cooling source to avoid the peak hour cold to underground benefit, to reach the object of the annual load balance of soil.
Accompanying drawing explanation
The seasonal Soil Thermal recovery technology of cooling tower of the present invention systematic schematic diagram when Fig. 1 adopts open cooling tower.
In figure: 1, ground source heat pump, 2, soil side pipe-line system main pipe, 3, soil side water pump, 4, the first valve, 5, the second valve, 6, ground heat exchanger, 7, electric three-way regulating valves, 8, building air conditioning end-equipment, 9, water pump of air conditioner, 10, air-conditioning side pipe-line system main pipe, 11, plate type heat exchanger, 12, open cooling tower, 13, cooling water pump, 14, cooling tower pipe-line system main pipe.
The seasonal Soil Thermal recovery technology of cooling tower of the present invention systematic schematic diagram when Fig. 2 adopts closed cooling tower.
In figure: 1, ground source heat pump, 2, soil side pipe-line system main pipe, 3, soil side water pump, 4, the first valve, 5, the second valve, 6, ground heat exchanger, 7, electric three-way regulating valves, 8, building air conditioning end-equipment, 9, water pump of air conditioner, 10, air-conditioning side pipe-line system main pipe, 15, closed cooling tower.
The specific embodiment
The seasonal Soil Thermal recovery system of cooling tower, is characterized in that:
Include ground source heat pump 1 (ground source heat pump 1 comprises soil side heat exchanger and air-conditioning side heat exchanger), soil side pipe-line system main pipe 2, soil side water pump 3, the first valve 4, the second valve 5, ground heat exchanger 6, electric three-way regulating valves 7, building air conditioning end-equipment 8, water pump of air conditioner 9, air-conditioning side pipe-line system main pipe 10, plate type heat exchanger 11, open cooling tower 12, cooling water pump 13, cooling tower pipe-line system main pipe 14.
After the soil side heat exchanger of ground source heat pump 1 is connected with the first valve 4, then in parallel with the second valve 5, after the pipeline after parallel connection be arranged on ground heat exchanger 6 in subterranean well, be arranged on the tributary pipeline a of the electric three-way regulating valves 7 on soil side pipe-line system main pipe 2 and interflow pipeline c and soil side water pump 3 and form one of closed circuit; Simultaneously, the soil side heat exchanger of ground source heat pump 1 is connected rear, then in parallel with the second valve 5 with the first valve 4, the primary side of the pipeline after parallel connection and plate type heat exchanger 11, the tributary pipeline b that is arranged on the electric three-way regulating valves 7 on soil side pipe-line system main pipe 2 and interflow pipeline c and soil side water pump 3 form two of closed circuit; The secondary side of plate type heat exchanger 11 with form three of closed circuit with the open cooling tower 12 and the cooling water pump 13 that are arranged on cooling tower pipe-line system main pipe 14.
Another kind of scheme, the seasonal Soil Thermal recovery system of cooling tower, is characterized in that:
Include ground source heat pump 1 (ground source heat pump 1 comprises soil side heat exchanger and air-conditioning side heat exchanger), soil side pipe-line system main pipe 2, soil side water pump 3, the first valve 4, the second valve 5, ground heat exchanger 6, electric three-way regulating valves 7, building air conditioning end-equipment 8, water pump of air conditioner 9, air-conditioning side pipe-line system main pipe 10, closed cooling tower 15.
After the soil side heat exchanger of ground source heat pump 1 is connected with the first valve 4, then in parallel with the second valve 5, after the pipeline after parallel connection be arranged on ground heat exchanger 6 in subterranean well, be arranged on the tributary pipeline a of the electric three-way regulating valves 7 on soil side pipe-line system main pipe 2 and interflow pipeline c and soil side water pump 3 and form one of closed circuit; Simultaneously, the soil side heat exchanger of ground source heat pump 1 is connected rear, then in parallel with the second valve 5 with the first valve 4, the pipeline after parallel connection and closed cooling tower 15, the tributary pipeline b that is arranged on the electric three-way regulating valves 7 on soil side pipe-line system main pipe 2 and interflow pipeline c and soil side water pump 3 form two of closed circuit.
The air-conditioning side heat exchanger of ground source heat pump 1 forms closed circuit with the water pump of air conditioner 9, the building air conditioning end-equipment 8 that are arranged on air-conditioning side pipe-line system main pipe 10.
1. when the seasonal Soil Thermal recovery technology of cooling tower system adopts open cooling tower, 1 the present invention is described in detail by reference to the accompanying drawings.
The structure of body series as shown in Figure 1, mainly includes ground source heat pump 1 (comprising the parts such as soil side heat exchanger, air-conditioning side heat exchanger), soil side pipe-line system main pipe 2, soil side water pump 3, the first valve 4, the second valve 5, ground heat exchanger 6, electric three-way regulating valves 7, building air conditioning end-equipment 8, water pump of air conditioner 9, air-conditioning side pipe-line system main pipe 10, plate type heat exchanger 11, open cooling tower 12, cooling water pump 13, cooling tower pipe-line system main pipe 14.
Ground source heat pump 1 is connected to form closed circuit by soil side heat exchanger and soil side pipe-line system, wherein soil side water pump 3, the first valve 4, the second valve 5 are arranged on soil side pipe-line system main pipe 2, ground heat exchanger 6 is arranged in subterranean well, and electric three-way regulating valves 7 is arranged on soil side pipe-line system main pipe 2; Ground source heat pump 1 is connected to form closed circuit by the interior air-conditioning system of air-conditioning side heat exchanger and building, wherein building air conditioning end-equipment 8 is connected with the air-conditioning side heat exchanger of ground source heat pump 1, and water pump of air conditioner 9 is arranged on air-conditioning side pipe-line system main pipe 10; The primary side of plate type heat exchanger 11 and soil side pipe-line system main 2 are connected to form closed circuit; The secondary side of plate type heat exchanger 11 and open cooling tower 12 are connected to form closed circuit, and wherein cooling water pump 13 is arranged on open cooling tower pipe-line system main pipe 14.
The course of work of body series is as follows:
According to the accumulative total heat extraction whole year and the caloric receptivity of ground source heat pump soil side, by winter wherein soil lateral balance not heat exhaust be divided into two parts: a part in summer, by electric three-way regulating valves 7, make plate type heat exchanger 11 and ground heat exchanger 6 parallel runnings so that utilize open cooling tower 12 by this part transfer of heat to outside atmosphere environment, now the first valve 4 is opened, the second valve 5 closes; Another part is made plate type heat exchanger 11 with ground heat exchanger 6 series operations and then is utilized open cooling tower 12 that outdoor natural cooling source is released to the cold thermal balance processing of carrying out to underground by electric three-way regulating valves 7 at transition season, and now the first valve 4 is closed, the second valve 5 opens.Also, cooling tower summer cooling condition to atmospheric environment discharge soil lateral balance in winter not a part for heat exhaust; The heat exhaust of another part utilizes outdoor natural cooling source to avoid the peak hour at transition season and releases the cold annual load balance that is able to underground.
2. when the seasonal Soil Thermal recovery technology of cooling tower system adopts closed cooling tower, below in conjunction with accompanying drawing 2, the present invention is described in detail.
The structure of body series as shown in Figure 2, mainly includes ground source heat pump 1 (comprising the parts such as soil side heat exchanger, air-conditioning side heat exchanger), soil side water pump 3, soil side pipe-line system main pipe 2, the first valve 4, the second valve 5, ground heat exchanger 6, electric three-way regulating valves 7, building air conditioning end-equipment 8, water pump of air conditioner 9, air-conditioning side pipe-line system main pipe 10, closed cooling tower 15.
The course of work of body series is as follows:
According to the accumulative total heat extraction whole year and the caloric receptivity of ground source heat pump soil side, by winter wherein soil lateral balance not heat exhaust be divided into two parts: a part summer by electric three-way regulating valves 7 by closed cooling tower 15 and ground heat exchanger 6 parallel runnings, utilize closed cooling tower 15 by this part transfer of heat to outside atmosphere environment, now the first valve 4 is opened, the second valve 5 closes; Another part at transition season by electric three-way regulating valves 7 by closed cooling tower 15 with ground heat exchanger 6 series operations, utilize closed cooling tower 10 that outdoor natural cooling source is released to the cold thermal balance processing of carrying out to underground, now the first valve 4 is closed, the second valve 5 opens.Also, cooling tower summer cooling condition to atmospheric environment discharge soil lateral balance in winter not a part for heat exhaust; The heat exhaust of another part utilizes outdoor natural cooling source to release the cold annual load balance that is able to soil at transition season.
Claims (2)
1. the seasonal Soil Thermal recovery system of cooling tower, is characterized in that:
Include ground source heat pump, ground source heat pump comprises soil side heat exchanger and air-conditioning side heat exchanger, soil side pipe-line system main pipe, soil side water pump, the first valve, the second valve, ground heat exchanger, electric three-way regulating valves, building air conditioning end-equipment, water pump of air conditioner, air-conditioning side pipe-line system main pipe, plate type heat exchanger, open cooling tower, cooling water pump, cooling tower pipe-line system main pipe;
After the soil side heat exchanger of ground source heat pump is connected with the first valve, then in parallel with the second valve, the pipeline after parallel connection be arranged on ground heat exchanger in subterranean well, be arranged on the tributary pipeline a of the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump and form one of closed circuit; Simultaneously, the soil side heat exchanger of ground source heat pump is connected rear, then in parallel with the second valve with the first valve, the pipeline after parallel connection and the primary side of plate type heat exchanger, the tributary pipeline b that is arranged on the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump form two of closed circuit; The secondary side of plate type heat exchanger forms three of closed circuit with the open cooling tower and the cooling water pump that are arranged on cooling tower pipe-line system main pipe;
The air-conditioning side heat exchanger of ground source heat pump forms closed circuit with the water pump of air conditioner, the building air conditioning end-equipment that are arranged on air-conditioning side pipe-line system main pipe.
2. the seasonal Soil Thermal recovery system of cooling tower, is characterized in that:
Include ground source heat pump, ground source heat pump comprises soil side heat exchanger and air-conditioning side heat exchanger, soil side pipe-line system main pipe, soil side water pump, the first valve, the second valve, ground heat exchanger, electric three-way regulating valves, building air conditioning end-equipment, water pump of air conditioner, air-conditioning side pipe-line system main pipe, closed cooling tower;
After the soil side heat exchanger of ground source heat pump is connected with the first valve, then in parallel with the second valve, the pipeline after parallel connection be arranged on ground heat exchanger in subterranean well, be arranged on the tributary pipeline a of the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump and form one of closed circuit; Simultaneously, the soil side heat exchanger of ground source heat pump is connected rear, then in parallel with the second valve with the first valve, the pipeline after parallel connection and closed cooling tower, the tributary pipeline b that is arranged on the electric three-way regulating valves on soil side pipe-line system main pipe and interflow pipeline c and soil side water pump form two of closed circuit;
The air-conditioning side heat exchanger of ground source heat pump forms closed circuit with the water pump of air conditioner, the building air conditioning end-equipment that are arranged on air-conditioning side pipe-line system main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210103729.2A CN102620482B (en) | 2012-04-10 | 2012-04-10 | Seasonal soil heat recovery system of cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210103729.2A CN102620482B (en) | 2012-04-10 | 2012-04-10 | Seasonal soil heat recovery system of cooling tower |
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| Publication Number | Publication Date |
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| CN102620482A CN102620482A (en) | 2012-08-01 |
| CN102620482B true CN102620482B (en) | 2014-04-16 |
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| CN201210103729.2A Expired - Fee Related CN102620482B (en) | 2012-04-10 | 2012-04-10 | Seasonal soil heat recovery system of cooling tower |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104501332B (en) * | 2014-11-21 | 2017-07-07 | 吉林大学 | A kind of subterranean heat exchanger |
| CN105135575A (en) * | 2015-09-24 | 2015-12-09 | 宝莲华新能源技术（上海）有限公司 | Automatic control system for ground source heat pump and cooling tower parallel connection combined type air conditioner |
| CN105157179A (en) * | 2015-09-24 | 2015-12-16 | 宝莲华新能源技术（上海）有限公司 | Automatic control system of ground source heat pump and cooling tower series connection combined type air conditioner |
| CN108302673A (en) * | 2018-01-12 | 2018-07-20 | 北京百度网讯科技有限公司 | Cooling system and cooling means, device, computer equipment and storage medium |
| CN108895715A (en) * | 2018-09-04 | 2018-11-27 | 南京工业大学 | A kind of ground-source heat pump system using accumulation of energy based on cold and hot equilibrium idea suitable for southern area of China |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5669224A (en) * | 1996-06-27 | 1997-09-23 | Ontario Hydro | Direct expansion ground source heat pump |
| JP2002333232A (en) * | 2001-05-10 | 2002-11-22 | Kubota Corp | Heat pump equipment and snow melting equipment |
| CN100427852C (en) * | 2004-03-08 | 2008-10-22 | 北京北控恒有源科技发展有限公司 | Air-conditioning system using earth as heat source by heat pump |
| CN1746571A (en) * | 2005-09-28 | 2006-03-15 | 哈尔滨工业大学 | Soil cold-storage and coupled integrating system of hot pump |
| CN201837000U (en) * | 2009-11-26 | 2011-05-18 | 广西钧富凰地源热泵有限公司 | Soil source composite heating and cooling air conditioner system |
| CN102313329A (en) * | 2011-09-09 | 2012-01-11 | 长沙理工大学 | Solar energy and air energy ground source air conditioning plant with geothermy balance and energy storage device |
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