CN112212529A - Air circulation type liquid collecting pool heat taking method - Google Patents
Air circulation type liquid collecting pool heat taking method Download PDFInfo
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- CN112212529A CN112212529A CN202011012143.6A CN202011012143A CN112212529A CN 112212529 A CN112212529 A CN 112212529A CN 202011012143 A CN202011012143 A CN 202011012143A CN 112212529 A CN112212529 A CN 112212529A
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- 238000007654 immersion Methods 0.000 claims abstract description 31
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- 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
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention is suitable for the technical field of gas-water heat exchange, and provides an air circulation type liquid collecting pool heat-taking method, which comprises the following specific steps: step 1, arranging a heat exchange packed bed, and arranging a PVC (polyvinyl chloride) trickle packing layer on a liquid collecting tank; step 2, leaching the heat exchange packed bed, and uniformly leaching the ground immersion liquid on the heat exchange packed bed by using a liquid distribution water pump, a water suction port liquid supply pipe and a water distribution disc; step 3, performing first-time gas-water heat exchange, using a heat source tower as power, enabling low-temperature air to pass through a heat exchange packed bed, conducting shallow geothermal heat to circulating air through packing, and enabling the circulating air to enter an air pipe; step 4, performing secondary air-water heat exchange, and conveying the circulating air which absorbs heat sufficiently in the air pipe to a closed heat source tower by taking a booster fan as power; and 5, providing power by the primary intermediary water pump, and conducting heat in the primary intermediary water to the secondary intermediary water through the heat exchange coil. Therefore, the invention realizes the purpose of saving resources by utilizing the waste heat in the in-situ leaching uranium mining engineering.
Description
Technical Field
The invention relates to the technical field of air-water heat exchange, in particular to an air circulation type liquid collecting pool heat-taking method.
Background
The most typical application of taking air as a heat source carrier is a cooling tower (heat source tower), which releases heat to the air in summer and absorbs heat from the air in winter, and can provide a cold and heat source for a building all the year round by combining with a water source heat pump evaporator system. The method has certain application cases in areas with hot summer and cold winter in China. However, in cold or severe cold areas in northern China, the heat of outdoor air cannot be extracted through a cooling tower (heat source tower) due to cold climate in winter, and the heat source tower heat pump evaporator system cannot be used basically.
The ground immersion liquid is an important supporting facility in the ground immersion uranium mining project, and has the functions of buffering, mixing, exhausting, sand settling and the like of the ground immersion liquid. Meanwhile, the ground immersion liquid comes from the underground four to five hundred meters deep from the ground surface, so that a large amount of shallow geothermal energy is contained. Because the temperature of the ground immersion liquid is constant throughout the year, if a water source heat pump evaporator technology is combined, low-temperature geothermal resources are fully excavated, a clean, environment-friendly, low-carbon and energy-saving heat supply mode can be realized, and the method is an ideal mode for realizing building heating and life heat supply by the ground immersion uranium mining project in the north of China under the background of changing coal into gas and changing coal into electricity at present.
However, in the in-situ leaching uranium mining project in China, the in-situ leaching liquid is not adopted as a low-temperature heat source generally for four main reasons: firstly, the quality of the ground immersion liquid is poor, and most calcium and magnesium ions exceed the standard; secondly, the temperature of the ground immersion liquid is low, generally between 10 and 20 ℃, and even lower; thirdly, the earth immersion liquid is strong in corrosivity, such as oxygen and Cl-The isoconcentration is higher, especially the oxygen concentration exceeds the standard, which is a characteristic that other industries do not have and is also a main reason for causing the corrosion of heat exchange equipment; fourthly, managing the underground hot water according to mineral resources by partial provinces, wherein the water resource tax rate is 1-10 yuan/m3Unequal, the running cost of the underground water source heat pump evaporator project is greatly increased,most projects have poor economic benefits.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present invention provides an air circulation type heat collecting method for a liquid collecting tank, which aims to fully utilize shallow geothermal resources contained in ground immersion liquid, overcome the technical problems of poor water quality, severe corrosion, etc. in the application of ground immersion liquid in the conventional heat pump evaporator system, and provide an air circulation type heat collecting method for a liquid collecting tank, so as to realize reasonable and scientific utilization of ground immersion liquid.
In order to achieve the purpose, the invention provides an air circulation type liquid collecting pool heat taking method, which comprises the following specific steps:
step 1, arranging a heat exchange packed bed, and arranging a PVC (polyvinyl chloride) trickle packing layer on a liquid collecting tank;
step 4, performing secondary air-water heat exchange, and conveying the circulating air which absorbs heat sufficiently in the air pipe to a closed heat source tower by taking a booster fan as power;
and 7, refluxing low-temperature water in the heat supply water return pipe and the intermediate water return pipe, transferring low-temperature water heat energy to the condenser by the heat pump evaporator by using a small amount of electric energy, generating an available heat source, and flowing out of the heat supply water supply pipe to enter a heat supply pipeline.
According to the air circulation type liquid collecting tank heat extraction method, in the step 1, the heat exchange packed bed is composed of a PVC water spraying packing layer and is in a shape of an oblique wave, an S wave or an arc trapezoid.
According to the air circulation type liquid collecting pool heat taking method, in the step 2, the liquid distribution water pump is a chemical pump, the flow of the liquid distribution water pump is 100kW, and the heat load is 20m3H; the water distribution plate is a glass fiber reinforced plastic water collection plate with holes uniformly formed in the bottom.
According to the air circulation type liquid collecting pool heat taking method, in the step 4, the air quantity of a pressurizing fan is less than or equal to 5m per 100kW of heat load3And/s, the pressure is less than or equal to 150 Pa. The fan blade is made of glass fiber reinforced plastic, and the motor is a totally-enclosed waterproof motor.
According to the air circulation type liquid collecting pool heat taking method, the closed heat source tower in the step 4 is used reversely by a transverse flow closed cooling tower and is a finished product.
According to the air circulation type liquid collecting pool heat taking method, the primary intermediate water pump in the step 5 adopts a spray pump, the spray pump has a heat load of 20m according to the flow of 100kW3And h, selecting the model.
According to the air circulation type liquid collecting pool heat taking method, the secondary intermediary water pump in the step 6 adopts a pipeline pump, and the flow rate of the pipeline pump is 20m according to 100kW heat load3/h。
According to the air circulation type liquid collecting pool heat taking method, in the step 6 and the step 7, the heat pump evaporator is directly purchased and installed according to the heat load value, the temperature of the low-temperature side inlet/outlet water is 10/5 ℃, and the temperature of the hot-water side inlet/outlet water is 45/40 ℃.
According to the air circulation type liquid collecting pool heat taking method, an enclosure structure is arranged at the upper end of the liquid collecting pool, in the step 2, a PVC water spraying filler layer is of a sheet type structure with the length of 1000mm and the width of 500mm, the thickness of the sheet type structure is 0.4mm, and the distance between the sheet type structures is 25 mm; the area of the packing layer is less than or equal to 100m according to the heat load of 100kW2And (4) configuring.
Drawings
FIG. 1 is a schematic view of the overall mounting structure of the present invention;
fig. 2 is a partial case parameter comparison table of the present invention;
in the context of the figures, it is,
1-a liquid collecting tank, 2-a building enclosure, 3-a water suction port, 4-a liquid distribution water pump, 5-a liquid supply pipe, 6-a water distribution disc, 7-a heat exchange packed bed, 8-a liquid return pipe, 9-a heat source tower, 10-an air pipe, 11-a pressure fan, 12-a primary intermediate water pump 13-a secondary intermediate water pump, 14-an intermediate water supply pipe, 15-an intermediate water return pipe, 16-a heat pump evaporator, 17-a heat supply water supply pipe and 18-a heat supply water return pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1-2, the invention provides an air circulation type liquid collecting pool heat extraction method, which comprises the following specific steps:
step 1, arranging a heat exchange packed bed, and arranging a PVC (polyvinyl chloride) trickle packing layer on a liquid collecting tank; the trickle filler is a key cooling material in the cooling tower, and has the main functions of increasing the heat dissipation area, prolonging the air cooling path and improving the cooling effect of the cooling tower. The cooling tower is a core component in the cooling tower, and plays a decisive role in the safety, economy and high-efficiency operation of the cooling tower. The water spraying filler is combined with domestic authoritative research institutions such as Chinese water conservancy and hydropower science research institute, northeast electric power design institute limited company, east China electric power design institute limited company, West-An thermal research institute limited company and the like to develop various plate type water spraying fillers, such as double-oblique-wave, S-wave, optimized new oblique wave, trapezoidal group wave, bidirectional wave, oblique-folded wave, HTB-80 type, combined wave, herringbone wave, folded wave, V-shaped wave, oblique-staggered and the like, and is widely applied to large, medium and small cooling towers of different types.
step 4, performing secondary air-water heat exchange, and conveying the circulating air which absorbs heat sufficiently in the air pipe to a closed heat source tower by taking a booster fan as power;
and 7, refluxing low-temperature water in the heat supply water return pipe and the intermediate water return pipe, transferring low-temperature water heat energy to the condenser by the heat pump evaporator by using a small amount of electric energy, generating an available heat source, and flowing out of the heat supply water supply pipe to enter a heat supply pipeline.
Preferably, in step 1 of the present invention, the heat exchange packed bed is composed of a PVC water-spraying packing layer, and the shape of the heat exchange packed bed is a ramp wave, an "S" wave, or an arc trapezoid.
In addition, in step 2 of the invention, the liquid distribution water pump is a chemical pump, the flow rate of the liquid distribution water pump is 100kW, and the heat load is 20m3H; the water distribution plate is a glass fiber reinforced plastic water collection plate with holes uniformly formed in the bottom.
Furthermore, in the step 4 of the invention, the air volume of the booster fan is less than or equal to 5m according to the heat load of every 100kW3And/s, the pressure is less than or equal to 150 Pa. The fan blade is made of glass fiber reinforced plastic, and the motor is a totally-enclosed waterproof motor.
Preferably, the closed heat source tower in the step 4 of the invention is used in reverse of a transverse flow closed cooling tower, and is a finished product.
In order to achieve better technical effect, the primary intermediate water pump in the step 5 of the invention adopts a spray pump, and the spray pump has a heat load of 20m according to the flow of 100kW3And h, selecting the model.
In addition, in the practical use process, the inventionThe secondary intermediary water pump in the step 6 adopts a pipeline pump, and the flow rate of the pipeline pump is 20m according to 100kW heat load3/h。
In the step 6 and the step 7, the heat pump evaporator is directly purchased and installed according to the heat load value, the temperature of the low-temperature side inlet/outlet water is 10/5 ℃, and the temperature of the hot-water side inlet/outlet water is 45/40 ℃.
An enclosure structure is arranged at the upper end of the liquid collecting pool, in the step 2, a PVC water spraying filler layer adopts a sheet type structure with the length of 1000mm and the width of 500mm, the thickness of the sheet type structure is 0.4mm, and the distance between the sheet type structures is 25 mm; the area of the packing layer is less than or equal to 100m according to the heat load of 100kW2And (4) configuring.
The specific implementation method comprises the following steps:
(1) arranging a heat exchange packed bed, and arranging a certain amount of PVC water-drenching packing layers on the ground immersion water tank.
(2) And (4) leaching the packed bed, and uniformly leaching the ground immersion liquid on the packed bed by using a liquid distribution water pump and a water distribution disc.
(3) The first gas-water heat exchange uses the heat source tower as power to make low-temperature air pass through the packed bed, and the shallow geothermal heat is conducted to the circulating air through the packing.
(4) And performing secondary air-water heat exchange, namely taking the booster fan as power, conveying the fully heated circulating air to the closed heat source tower, and performing heat exchange between the air and primary intermediate water.
(5) And (3) water-water heat exchange, namely, using a primary intermediate water pump as power to transfer the heat of the primary intermediate water to secondary intermediate water through a heat exchange coil.
(6) And (3) water-liquid heat exchange, namely driving secondary intermediate water to perform water-liquid heat exchange with the heat pump evaporator by taking a secondary intermediate water pump as power, and guiding heat to the heat pump evaporator.
(7) The water source heat pump unit supplies hot water, the heat pump transfers the low-temperature water heat energy of the evaporator to the condenser by using a small amount of electric energy to generate a usable heat source, and a heat medium is provided for building heating or domestic hot water.
The heat exchange packed bed in the step (1) is composed of PVC water spraying packing layers, the packing is made of PVC materials with small ventilation resistance and durability, and the shape of the packing can be various water spraying packing such as oblique folding wave, S wave, arc ladder type and the like. Stuffing miningA sheet-type structure with the length of 1000(mm) and the width of 500(mm) is used, the thickness of the sheet-type structure is 0.4mm, and the distance between the sheet-type structures is 25 mm. The area of the packing layer is not less than 100m according to the heat load of 100kW2And (4) configuring.
The liquid distribution water pump in the step (2) is a high-flow and low-lift chemical pump, and has the characteristics of acid and alkali corrosion resistance, and the flow of the liquid distribution water pump is 20m according to the 100kW heat load3And h is determined. The water distribution plate is a glass fiber reinforced plastic water collection plate with holes uniformly formed in the bottom, and is matched with water pouring fillers to ensure that the fillers are uniformly poured with water.
The air volume of the booster fan in the step (4) is not less than 5m according to the heat load of each 100kW3The pressure head is not lower than 150 Pa. The fan blade is made of glass fiber reinforced plastic, and the motor is a totally-enclosed waterproof motor.
And (4) the closed heat source tower is used reversely by the transverse flow closed cooling tower and is a finished product.
The primary intermediate water pump in the step (5) adopts a spray pump, and the flow rate of the spray pump is 20m according to 100kW heat load3And h is determined.
The secondary intermediary water pump in the step (6) adopts a pipeline pump, and the flow rate of the pipeline pump is 20m according to 100kW heat load3And h is determined.
And (4) determining the heat pump in the steps (6) and (7) as finished equipment according to the heat load. The temperature of the low-temperature side inlet/outlet water is 10/5 ℃, and the temperature of the hot water side inlet/outlet water is 45/40 ℃.
The method has the following specific advantages:
(1) uses gas to replace water to avoid the corrosion of the ground immersion liquid to the heat exchanger
The method adopts air circulation to replace water-water heat exchange between a heat exchange material and the ground immersion liquid, overcomes the defects of poor water quality and strong corrosivity of the ground immersion liquid, and greatly reduces the corrosion of the ground immersion liquid metal heat exchanger.
(2) Reverse cooling tower for improving heat transfer effect of air-water interface
The method introduces a closed cooling tower, and utilizes the cooling tower, an induction fan, a packed bed, a ground immersion liquid enclosure structure and the like to form a closed airflow channel, thereby realizing the closed cycle of the low-temperature water system of the heat pump, ensuring the water quality and water quantity of the evaporator of the heat pump and prolonging the service life of the heat pump system.
(3) Underground water source is not utilized, and water resource tax is avoided
The method does not take water source for heat extraction, basically does not cause the loss of water resource, reasonably utilizes shallow low-temperature energy, realizes the comprehensive utilization of water resource, avoids resource tax and greatly reduces the operating cost of water source heat pump projects.
(4) Scientifically utilizes the residual heat of the ground immersion liquid to realize energy conservation and emission reduction
The method adopts the water source heat pump system to replace a boiler room heat supply system, can reduce the emission of harmful gases such as carbon dioxide, sulfur dioxide, nitrogen oxides and the like and solid matters, improves the surrounding atmospheric environment, and accords with the national comprehensive utilization support policy and the development of the circular economy mode. Compared with an electric boiler with equivalent capacity, the comprehensive performance coefficient of the system is as high as more than 3.5 of SCOP value, a large amount of electric energy can be saved, and the operating cost of the project is greatly reduced. Meanwhile, operation and maintenance personnel can be cancelled, the mechanization and automation degree is improved, and the remote control and the unattended operation are realized.
The invention has the beneficial effects that:
the invention provides an air circulation type ground immersion water pool heat extraction method by combining the characteristics of ground immersion liquid and the requirement of winter heating of northern buildings. The method utilizes a heat source tower, an induction fan and a liquid collecting tank packed bed to form an air circulation channel, low-temperature geothermal energy contained in a liquid collecting tank is conducted to the heat source tower through the flow of the atmosphere, a heat exchange coil arranged in the heat source tower conveys the low-temperature heat source to a water source heat pump evaporator, and the water source heat pump transfers the low-level heat energy to the high-level heat energy by consuming a small amount of electric energy, so that the heat source for building heating and domestic hot water extraction in northern areas in winter is realized.
The invention provides an air circulation type ground immersion water pool heat extraction method by combining the characteristics of ground immersion liquid and the requirement of winter heating of northern buildings. The method utilizes a heat source tower, an induction fan and a liquid collecting tank packed bed to form an air circulation channel, low-temperature geothermal energy contained in a liquid collecting tank is conducted to the heat source tower through the flow of the atmosphere, a heat exchange coil arranged in the heat source tower conveys the low-temperature heat source to a water source heat pump evaporator, and the water source heat pump transfers the low-level heat energy to the high-level heat energy by consuming a small amount of electric energy, so that the heat source for building heating and domestic hot water extraction in northern areas in winter is realized.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. An air circulation type liquid collecting pool heat taking method is characterized by comprising the following specific steps:
step 1, arranging a heat exchange packed bed (7), and arranging a PVC (polyvinyl chloride) trickle packing layer on a liquid collecting tank (1);
step 2, leaching the heat exchange packed bed, and uniformly leaching the ground immersion liquid on the heat exchange packed bed by using a liquid distribution water pump (4), a water supply pipe (5) of a water suction port (3) and a water distribution disc (6);
step 3, performing first-time gas-water heat exchange, using a heat source tower (9) as power, enabling low-temperature air to pass through a heat exchange packed bed (7), conducting shallow geothermal heat to circulating air through packing, and enabling the circulating air to enter an air pipe (10); the ground immersion liquid flows back to the liquid collecting pool (1) along the liquid return pipe (8);
step 4, carrying out secondary air-water heat exchange, and using a booster fan (11) as power to convey the circulating air which fully absorbs heat in the air pipe (10) to a closed heat source tower (9);
step 5, water-water heat exchange is carried out, a primary intermediate water pump (12) provides power, and heat in the primary intermediate water is conducted to secondary intermediate water through a heat exchange coil;
step 6, water-liquid heat exchange is carried out, a secondary intermediate water pump (13) provides power to drive secondary intermediate water to carry out water-liquid heat exchange with the heat pump evaporator from an intermediate water supply pipe (14), and heat is conducted to the heat pump evaporator (16);
and 7, low-temperature water flows back from the heat supply water return pipe (18) and the medium water return pipe (15), the heat pump evaporator (16) transfers low-temperature water heat energy to the condenser by using a small amount of electric energy to generate a usable heat source, and the usable heat source flows out of the heat supply water supply pipe (17) and enters the heat supply pipeline.
2. An air circulation type liquid collecting tank heat extraction method as claimed in claim 1, wherein in step 1, the heat exchange packed bed (7) is composed of a PVC water spraying packing layer, and is in the shape of a ramp wave, an S-wave or an arc trapezoid.
3. The air circulation type liquid collecting tank heat removal method according to claim 2, wherein the liquid distribution water pump (4) in the step 2 is a chemical pump, the flow rate of the liquid distribution water pump (4) is 100kW, and the heat load is 20m3H; the water distribution plate (6) is a glass fiber reinforced plastic water collection plate with holes uniformly formed in the bottom.
4. An air circulation type liquid collecting pool heat extraction method as claimed in claim 3, wherein in step 4, the air volume of the pressurizing fan (11) is less than or equal to 5m according to the heat load of 100kW per unit3The pressure is less than or equal to 150Pa, the fan blade is made of glass fiber reinforced plastic, and the motor is a fully-closed waterproof motor.
5. The air circulation type liquid collecting pool heat extraction method as claimed in claim 4, wherein the closed heat source tower (9) in the step 4 is a reverse use of a cross flow closed cooling tower and is a finished product.
6. An air circulation type heat collecting pool heat collecting method as claimed in claim 1, wherein the primary medium water pump (12) in step 5 is a spray pump with a heat load of 20m and a flow rate of 100kW3And h, selecting the model.
7. The air circulation type heat collecting pool heat collecting method as claimed in claim 1, wherein the secondary intermediate water pump (13) in step 6 is a pipeline pump, and the flow rate of the pipeline pump is 20m according to 100kW heat load3/h。
8. The air circulation type heat collection tank heat collection method as claimed in claim 7, wherein in the step 6 and the step 7, the heat pump evaporator (16) is directly purchased and installed according to the heat load value, the low temperature side inlet/outlet water temperature is 10/5 ℃, and the hot water side inlet/outlet water temperature is 45/40 ℃.
9. The air circulation type collecting tank heat removal method of claim 2, wherein the upper end of the collecting tank (1) is provided with a building enclosure (2), in the step 2, the PVC water spraying filler layer adopts a sheet type structure with the length of 1000mm and the width of 500mm, the thickness of the sheet type structure is 0.4mm, and the distance between the sheet type structures is 25 mm; the area of the packing layer is less than or equal to 100m according to the heat load of 100kW2And (4) configuring.
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| CN202011012143.6A CN112212529A (en) | 2020-09-23 | 2020-09-23 | Air circulation type liquid collecting pool heat taking method |
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| CN202011012143.6A CN112212529A (en) | 2020-09-23 | 2020-09-23 | Air circulation type liquid collecting pool heat taking method |
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