CN114992743A - Passive ventilation and adsorption refrigeration combined energy utilization ventilation system - Google Patents
Passive ventilation and adsorption refrigeration combined energy utilization ventilation system Download PDFInfo
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- CN114992743A CN114992743A CN202210787514.0A CN202210787514A CN114992743A CN 114992743 A CN114992743 A CN 114992743A CN 202210787514 A CN202210787514 A CN 202210787514A CN 114992743 A CN114992743 A CN 114992743A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0014—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using absorption or desorption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/30—Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
- F25B17/02—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a liquid, e.g. brine
- F25B17/04—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a liquid, e.g. brine with two or more boilers operating alternately
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B37/00—Absorbers; Adsorbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F2007/004—Natural ventilation using convection
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- 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]
- Y02B30/62—Absorption based systems
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Abstract
The invention discloses a ventilation system for utilizing composite energy of passive ventilation and adsorption refrigeration, which comprises a solar chimney module, waste heat recovery equipment, an adsorption refrigeration system and indoor heat exchange equipment, wherein the solar chimney module is connected with the waste heat recovery equipment; the waste heat recovery device is connected with the solar chimney module and is used for recovering waste heat of the solar chimney module; the adsorption refrigeration system is connected with the waste heat recovery equipment and the indoor heat exchange equipment and used for adsorbing heat of the waste heat recovery equipment and the indoor heat exchange equipment. The invention organically combines the passive ventilation technology and the adsorption refrigeration technology, improves the energy efficiency, saves energy and reduces emission; the passive ventilation technology and the adsorption refrigeration technology are combined with each other, so that natural ventilation can be enhanced, refrigeration and domestic hot water can be provided for rooms, and the comfort level of the living environment is improved; in winter, the air entering the room can be preheated by solar energy, and the life hot water is provided for the user in the room by recovering heat to the water tank.
Description
Technical Field
The invention belongs to the technical field of energy utilization, and particularly relates to a ventilation system for composite energy utilization of passive ventilation and adsorption refrigeration.
Background
Heating, ventilating and air conditioning (HVAC) systems are widely applied to people's lives, but the HVAC systems have large power consumption which accounts for 30% -40% of the building power consumption, and the HVAC ventilation systems and the HVAC refrigeration systems are more power consumers. On the basis, research and development and application of a passive ventilation and adsorption refrigeration composite system driven by a low-grade heat source are provided, and indoor ventilation and cooling are promoted under the condition of consuming a very small amount of electric energy; on the premise of not losing comfort, fresh and healthy air is brought to indoor, low-grade heat sources such as solar energy and waste heat are efficiently utilized, new energy utilization and development of green building energy-saving technology are promoted, HVAC improvement and upgrading are promoted, and building power consumption is reduced.
The main structure of the passive ventilation technology is realized in a chimney mode, the air in the chimney is heated by utilizing the heat provided by a low-grade heat source, and the air at the inlet and the outlet of a chimney channel generates temperature difference and pressure difference, so that natural ventilation is formed. At present, the existing research on the passive ventilation technology of the building mainly focuses on the influence of structural parameters and environmental parameters on the ventilation performance of the building, and neglects the mutual combination with other low-carbon energy-saving technologies, so that the passive ventilation technology is difficult to obtain technical breakthrough.
Disclosure of Invention
The invention provides a ventilation system for utilizing composite energy of passive ventilation and adsorption refrigeration, and aims to solve the problem of low comfort in the conventional passive ventilation technology.
The invention adopts the following technical scheme:
a ventilation system for utilizing composite energy of passive ventilation and adsorption refrigeration comprises a solar chimney module, waste heat recovery equipment, an adsorption refrigeration system and indoor heat exchange equipment;
the waste heat recovery device is connected with the solar chimney module and is used for recovering waste heat of the solar chimney module;
the adsorption refrigeration system is connected with the waste heat recovery equipment and the indoor heat exchange equipment and is used for absorbing heat of the waste heat recovery equipment and providing cold of the indoor heat exchange equipment.
In some embodiments, the solar chimney module comprises a transparent exterior wall, a heat collection plate and a heat storage wall; a heating air channel is formed between the transparent outer wall and the heat storage wall, and the heat collection plate is positioned in the heating air channel; the transparent outer wall is provided with a first air outlet and a first air inlet which can be controlled to open and close and are respectively positioned at the upper end and the lower end, and the heat storage wall is provided with a second air inlet and a second air outlet which can be controlled to open and close and are respectively positioned at the upper end and the lower end.
In some embodiments, the waste heat recovery device comprises an evaporator, an ascending gas pipe, a condenser and a descending liquid pipe which are sequentially connected end to form a circulation loop, the evaporator is located in the heat storage wall, and the condenser is connected with the adsorption refrigeration system for heat exchange.
In some embodiments, the adsorption refrigeration system comprises a heat storage water tank, a cooling water tank, a cold carrying water tank, a first adsorption tank and a second adsorption tank, wherein the first adsorption tank is internally provided with a first adsorption bed and a first evaporative condenser, and the second adsorption tank is internally provided with a second adsorption bed and a second evaporative condenser;
the condenser is arranged in the heat storage water tank; the heat storage water tank is selectively communicated with the first adsorption bed or the second adsorption bed through a first circulating pipeline;
the cooling water tank is selectively communicated with the first adsorption bed and the second evaporative condenser in sequence through a second circulating pipeline, or sequentially passes through the second adsorption bed and the first evaporative condenser;
the cold water carrying tank can be selectively communicated with the first evaporative condenser or the second evaporative condenser through a third circulating pipeline;
the indoor heat exchange equipment is connected with the cold water carrying tank for heat exchange.
In some embodiments, a vacuum is drawn within the first adsorption tank and the second adsorption tank.
In some embodiments, when the hot water storage tank is communicated with the first adsorption bed through a first circulation pipeline, the cooling water tank is communicated with the second adsorption bed and the first evaporative condenser through a second circulation pipeline in sequence, and the cold water carrying tank is communicated with the second evaporative condenser through a third circulation pipeline;
when the heat storage water tank is communicated with the second adsorption bed through a first circulating pipeline, the cooling water tank is sequentially communicated with the first adsorption bed and a second evaporative condenser through a second circulating pipeline; and the cold water carrying tank is communicated with the first evaporative condenser through a third circulating pipeline.
In some embodiments, the pump further comprises a controller, the first circulation pipeline, the second circulation pipeline and the third circulation pipeline are connected with each other and provided with a plurality of control valves, the plurality of control valves are electrically connected with the controller, and the pump body is arranged on each of the first circulation pipeline, the second circulation pipeline and the third circulation pipeline.
In some embodiments, the temperature of the hot water in the hot water storage tank is 55-100 ℃, the temperature of the cold water in the cooling water tank is 18-32 ℃, and the temperature of the cold water in the cold water carrying tank is 7-12 ℃.
In some embodiments, the indoor heat exchange device is a fan coil.
In some embodiments, R22 refrigerant is in the heat recovery device.
Compared with the prior art, the invention has the beneficial effects that:
1. the ventilation system for the composite energy utilization of the passive ventilation and the adsorption refrigeration organically combines the passive ventilation technology and the adsorption refrigeration technology, utilizes the characteristics of different technical requirements and different temperature zone heat sources, efficiently, reasonably and comprehensively distributes the use of the heat sources, improves the energy efficiency, saves energy and reduces emission;
2. the passive ventilation technology and the adsorption refrigeration technology are combined with each other, air in the solar chimney module can be heated by solar energy in summer, and temperature difference and pressure difference are generated at an inlet and an outlet of a channel, so that natural ventilation is enhanced, meanwhile, the collected heat is recovered by waste heat recovery equipment, an adsorption refrigeration system is driven, and the living hot water can be provided while refrigeration is provided for a room, so that the comfort level of a living environment is improved; in winter, the air entering the room can be preheated by solar energy, and the heat is recovered by the heat pipe device to the water tank to provide domestic hot water for the users in the room.
Drawings
The technology of the present invention will be described in further detail with reference to the accompanying drawings and detailed description below:
FIG. 1 is a schematic, diagrammatic illustration of a ventilation system for combined energy utilization for passive ventilation and adsorptive refrigeration of the present invention;
fig. 2 is a piping diagram of the adsorption refrigeration system of the present invention.
Reference numerals:
1-solar chimney module; 11-a transparent outer wall; 111-a first outlet; 112-a first air inlet; 12-a heat collecting plate; 13-heat storage wall; 131-a second air inlet; 132-a second air outlet; 133-thermally insulating walls; 14-a heating air duct; 15-air valve;
2-a waste heat recovery device; 21-an evaporator; 22-ascending gas pipe; 23-a condenser; 24-a downcomer pipe;
3-an adsorption refrigeration system; 31-a thermal storage water tank; 311-a first recycle line; 32-a cooling water tank; 321-a second circulation line; 33-carrying cold water tank; 331-a third circulation line; 34-a first adsorption tank; 341-first adsorption bed; 342-a first evaporative condenser; 35-a second adsorption tank; 351-a second adsorption bed; 352-second evaporative condenser; 36-a control valve; 37-a pump body;
4-fan coil.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
Referring to fig. 1 and 2, the ventilation system for utilizing the composite energy of passive ventilation and adsorption refrigeration is used for being installed on a house and comprises a solar chimney module 1, waste heat recovery equipment 2, an adsorption refrigeration system 3 and indoor heat exchange equipment.
The waste heat recovery device 2 is connected with the solar chimney module 1 and used for recovering waste heat of the solar chimney module 1. Specifically, the solar chimney module 1 comprises a transparent outer wall 11, a heat collection plate 12 and a heat storage wall 13, a heating air duct 14 is formed between the transparent outer wall 11 and the heat storage wall 13, and the heat collection plate 12 is located in the heating air duct 14; the transparent outer wall 11 is provided with a first air outlet 111 and a first air inlet 112 which can be controlled to open and close and are respectively positioned at the upper end and the lower end, and the first air outlet 111 and the first air inlet 112 are both provided with independent air valves 15 which can be controlled to open and close independently to adapt to different working conditions. The heat storage wall 13 is provided with a second air inlet 131 and a second air outlet 132 which can be controlled to open and close and are respectively positioned at the upper end and the lower end, and the second air outlet 132 and the second air inlet 131 are both provided with independent air valves 15 which can be controlled to open and close independently to adapt to different working conditions. The transparent outer wall 11 is a glass outer wall, the heat collecting plate 12 is made of a heat absorbing material and can absorb heat of sunlight penetrating through the transparent outer wall 11, so that temperature is rapidly raised, the heat storage wall 13 is used for installing the waste heat recovery device 2 to recover heat, the solar chimney module 1 is isolated from heat in a room, and the inner wall of the heat storage wall 13 is a heat insulation wall 133.
In summer, the first outlet 111 and the second outlet 132 are opened, and the first inlet 112 and the second inlet 131 are closed. The sun irradiates on the solar chimney module 1, sunlight irradiates on the heat collecting plate 12 through the transparent outer wall 11, the temperature of the heat collecting plate 12 rises rapidly, the solar heat radiation and the high-temperature heat collecting plate 12 heat the air in the heating air duct 14 together, the temperature of the air in the heating air duct 14 rises after absorbing heat, the density of the air is reduced, the air flows upwards and reaches the chimney, the air is discharged to the outside from the first air outlet 111, at the moment, the air pressure in the room is reduced, outdoor fresh air enters the room from the outside through other windows of the room due to pressure difference, and enters the heating air duct 14 from the second air outlet 132 at the bottom to form circulation, and hot water can be prepared through the waste heat recovery device 2.
In winter, the first and second intake vents 112 and 131 are opened, and the first and second outlet vents 111 and 132 are closed. The sun irradiates on the solar chimney module 1, sunlight irradiates on the heat collecting plate 12 through the transparent outer wall 11, the temperature of the heat collecting plate 12 rises rapidly, the solar heat radiation and the high-temperature heat collecting plate 12 heat the air in the heating air duct 14 together, the temperature of the air in the heating air duct 14 rises after absorbing heat, the density decreases, the air flow flows upwards to reach the chimney, the air enters the room from the second air inlet 131, the heated warm air is used at the moment, the air pressure in the heating air duct 14 is reduced, then the cold air enters the heating channel from the first air inlet 112 at the lower end, the air is continuously heated into the warm air to enter the room, circulation is formed, and at the moment, the hot water can be prepared through the heat recovered by the waste heat recovery device 2.
The adsorption refrigeration system 3 is connected with the waste heat recovery device 2 and the indoor heat exchange device and is used for absorbing heat of the waste heat recovery device 2 and providing cold of the indoor heat exchange device.
Wherein, waste heat recovery equipment 2 is including the evaporimeter 21, the rising trachea 22, condenser 23 and the downcomer 24 that form circulation circuit in proper order end to end connection, evaporimeter 21 is located in heat accumulation wall 13, condenser 23 with the heat transfer is connected to absorption refrigeration system 3. The refrigerant flows through the circulation circuit of the waste heat recovery device 2, and when the refrigerant passes through the evaporator 21, the heat storage wall 13 absorbs heat from solar energy, and the temperature is high, so that the refrigerant absorbs heat in the evaporator 21, evaporates into a gaseous state, is discharged from the rising gas pipe 22 to the condenser 23, exchanges heat with the adsorption refrigeration system 3 in the condenser 23, and after the heat exchange, the refrigerant turns into a liquid, and passes through the heat storage wall 13 again to absorb heat and evaporate, thereby forming a cycle. In this process, the temperature of the heat storage wall 13 reaches 100 ℃ or higher, and the hot water in the heat storage water tank 31 of the adsorption refrigeration system 3 can be heated to 60 to 80 ℃. In one embodiment, R22 refrigerant is in the waste heat recovery device 2.
The adsorption refrigeration system 3 includes a hot water storage tank 31, a cooling water tank 32, a cold water carrying tank 33, a first adsorption tank 34 and a second adsorption tank 35, wherein a first adsorption bed 341 and a first evaporative condenser 342 are provided in the first adsorption tank 34, and a second adsorption bed 351 and a second evaporative condenser 352 are provided in the second adsorption tank 35. Wherein, the adsorption refrigeration system 3 adopts silica gel-water working medium pair, and silica gel is filled in the first adsorption bed 341 and the second adsorption bed 351 as adsorbent.
The condenser 23 is arranged in the heat storage water tank 31, and water in the heat storage water tank 31 absorbs heat of the refrigerant in the condenser 23 and becomes hot water of 60-80 ℃; the hot water storage tank 31 is selectively communicated with the first adsorption bed 341 or the second adsorption bed 351 through the first circulation pipeline 311, and supplies heat when being conveyed to the first adsorption bed 341 or the second adsorption bed 351 through the first circulation pipeline 311, so that the adsorbent in the adsorption beds is heated to desorb water to form water vapor, and the water vapor reaches the evaporative condenser 342 or 352 of the corresponding adsorption tank.
The cooling water tank 32 is selectively communicated with the first adsorption bed 341 and the second evaporative condenser 352 in sequence, or sequentially passes through the second adsorption bed 351 and the first evaporative condenser 342 through a second circulation line 321. In this process, the first or second adsorption bed 341 or 351 largely adsorbs water vapor and releases heat, and the released heat is taken away by the cooling water in the second circulation line 321, and while passing through the first or second evaporative condenser 342 or 352, the heat of the water vapor at the evaporative condenser 342 or 352 is absorbed, and the water vapor at the evaporative condenser 342 or 352 is condensed into water.
The cold water carrying tank 33 can be selectively connected to the first evaporative condenser 342 or the second evaporative condenser 352 through the third circulation line 331, and the cold water carrying tank 33 absorbs heat and decreases in temperature when passing through the first evaporative condenser 342 or the second evaporative condenser 352. The indoor heat exchange equipment is connected with the cold water carrying tank 33 for heat exchange, so that the indoor heat exchange equipment can cool the indoor space. Wherein, the indoor heat exchange equipment is a fan coil 4.
The first adsorption tank 34 and the second adsorption tank 35 are internally evacuated, and the adsorption refrigeration technology utilizes the principle that a refrigerant can boil at a low temperature in a low-pressure environment to absorb heat through phase change, so that the first adsorption tank 34 and the second adsorption tank 35 are internally evacuated by adopting an evacuation mode, evaporated steam is absorbed by an adsorbent to maintain the low-pressure environment, the regeneration of the adsorbent is completed through heat energy, and the continuous refrigeration of the refrigerant is realized. The first adsorption tank 34 and the second adsorption tank 35 are stainless steel seal tanks, the first adsorption tank 34 and the second adsorption tank 35 are further connected with a vacuum pump through pipelines to adjust the internal vacuum degree, and the preferred vacuum degree in the first adsorption tank 34 and the second adsorption tank 35 is 800-2500 Pa.
Wherein, adsorption refrigeration has two kinds of operating modes, and one of them operating mode is: the first adsorption bed 341 desorbs and the second adsorption bed 351 adsorbs. The other working condition is as follows: the second adsorption bed 351 desorbs and the first adsorption bed 341 adsorbs. Continuous refrigeration can be realized by controlling the back-and-forth switching of the two working conditions.
The first adsorption bed 341 desorbs, and the second adsorption bed 351 adsorbs under the following conditions: when the hot-water storage tank 31 communicates with the first adsorption bed 341 through the first circulation line 311, the cooling water tank 32 communicates with the second adsorption bed 351 and the first evaporative condenser 342 in this order through the second circulation line 321, and the cold-water storage tank 33 communicates with the second evaporative condenser 352 through the third circulation line 331. That is, when the hot water in the hot water storage tank 31 reaches the first adsorption bed 341, the adsorbent in the first adsorption bed 341 is dehydrated, and the water absorbs heat and turns into steam; the water in the cooling water tank 32 passes through the second circulation line 321 to the second adsorption bed 351, the adsorbent in the second adsorption bed 351 absorbs water and releases heat, the released heat is taken away by the water in the second circulation line 321, the water in the second circulation line 321 passes through the first evaporative condenser 342, and since the first adsorption bed 341 generates a large amount of water vapor, the water vapor contacts the water in the second circulation line 321 at the first evaporative condenser 342, the heat is exchanged to the water in the second circulation line 321, the water vapor is condensed into water, and the temperature of the water in the cooling water tank 32 is increased. When the cold water carrying tank 33 enters the second evaporative condenser 352 through the third circulation pipeline 331, the air pressure is reduced after the water is absorbed by the second adsorption bed 351 in the second adsorption tank 35, the water in the second adsorption tank 35 absorbs heat and evaporates in the second evaporative condenser 352, the heat of the cold water carrying is taken away, the temperature of the cold water carrying is reduced, and the cold water carrying exchanges heat with indoor heat exchange equipment to cool the indoor. The duration of the process is adsorption and desorption time, which is usually 5 to 60 minutes, preferably 20 minutes, the temperature of the water in the heat storage water tank 31 is 55 to 100 ℃, preferably 75 ℃, and the temperature of the water in the cooling water tank 32 is 18 to 32 ℃, preferably 30 ℃. The water temperature of the cold-carrying water is 7-12 ℃, and is preferably 7 ℃.
The second adsorption bed 351 desorbs, and the adsorption conditions of the first adsorption bed 341 are as follows: when the hot water storage tank 31 communicates with the second adsorption bed 351 through the first circulation line 311, the cooling water tank 32 communicates with the first adsorption bed 341 and the second evaporative condenser 352 in this order through the second circulation line 321; the cold water carrying tank 33 is communicated with the first evaporative condenser 342 through a third circulation line 331. That is, when the hot water in the hot water storage tank 31 reaches the second adsorption bed 351, the adsorbent in the second adsorption bed 351 is dehydrated, and the water absorbs heat and turns into steam; the water in the cooling water tank 32 passes through the second circulation line 321 to the first adsorption bed 341, the adsorbent in the first adsorption bed 341 absorbs water and releases heat, the released heat is taken away by the water in the second circulation line 321, the water in the second circulation line 321 passes through the second evaporative condenser 352, and since the second adsorption bed 351 generates a large amount of water vapor, the water vapor contacts the water in the second circulation line 321 at the second evaporative condenser 352, the heat is exchanged to the water in the second circulation line 321, the water vapor is condensed into water, and the temperature of the water in the cooling water tank 32 is increased. When the cold water carrying tank 33 comes to the first evaporative condenser 342 through the third circulation line 331, since the air pressure decreases after the first adsorbent bed 341 in the first adsorbent tank 34 absorbs water, the water in the first adsorbent tank 34 absorbs heat and evaporates in the first evaporative condenser 342, and the heat of the cold water carrying is taken away, so that the temperature of the cold water carrying is reduced, and the cold water carrying exchanges heat with indoor heat exchange equipment to cool the indoor space. The duration of the process is adsorption and desorption time, which is usually 5 to 60 minutes, preferably 20 minutes, the temperature of the water in the heat storage water tank 31 is 55 to 100 ℃, preferably 75 ℃, and the temperature of the water in the cooling water tank 32 is 18 to 32 ℃, preferably 30 ℃. The water temperature of the cold-carrying water is 7-12 ℃, and is preferably 7 ℃.
In the winter mode, only the solar chimney module 1 and the waste heat recovery device 2 are started, the adsorption type refrigeration system 3 and the indoor heat exchange device are not started, air entering the room is heated only through the solar chimney module 1, and hot water is prepared in the heat storage water tank 31 through heat absorbed by the waste heat recovery device 2.
Preferably, in order to control the switching of the above working conditions, the system further includes a controller, the first circulation pipeline 311, the second circulation pipeline 321, and the third circulation pipeline 331 are connected to each other and provided with a plurality of control valves 36, the plurality of control valves 36 are electrically connected to the controller, and the first circulation pipeline 311, the second circulation pipeline 321, and the third circulation pipeline 331 are provided with a pump body 37. Through the switching of different control valves 36, the switching state of each circulation pipeline can be controlled, and therefore the automation of working condition switching is achieved. Specifically, the controller is a PLC, the control valve 36 is a three-way control valve 36, and the pump body 37 is a water pump.
Other contents of the ventilation system utilizing hybrid energy of passive ventilation and adsorption refrigeration of the present invention are referred to in the prior art and will not be described herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A ventilation system for utilizing composite energy of passive ventilation and adsorption refrigeration is characterized by comprising a solar chimney module, waste heat recovery equipment, an adsorption refrigeration system and indoor heat exchange equipment;
the waste heat recovery device is connected with the solar chimney module and is used for recovering waste heat of the solar chimney module;
the adsorption refrigeration system is connected with the waste heat recovery equipment and the indoor heat exchange equipment and is used for absorbing heat of the waste heat recovery equipment and providing cold of the indoor heat exchange equipment.
2. The combined energy-utilizing ventilation system for passive ventilation and adsorption refrigeration according to claim 1, wherein the solar chimney module comprises a transparent exterior wall, a heat collecting plate and a heat accumulating wall; a heating air channel is formed between the transparent outer wall and the heat storage wall, and the heat collection plate is positioned in the heating air channel; the transparent outer wall is provided with a first air outlet and a first air inlet which can be controlled to open and close and are respectively positioned at the upper end and the lower end, and the heat storage wall is provided with a second air inlet and a second air outlet which can be controlled to open and close and are respectively positioned at the upper end and the lower end.
3. The combined energy utilization ventilation system for passive ventilation and adsorption refrigeration as claimed in claim 2, wherein the waste heat recovery device comprises an evaporator, an air ascending pipe, a condenser and a liquid descending pipe which are connected end to end in sequence to form a circulation loop, the evaporator is located in the heat storage wall, and the condenser is connected with the adsorption refrigeration system for heat exchange.
4. The combined energy-utilizing ventilation system for passive ventilation and adsorption refrigeration of claim 3, wherein the adsorption refrigeration system comprises a heat storage water tank, a cooling water tank, a cold carrying water tank, a first adsorption tank and a second adsorption tank, wherein a first adsorption bed and a first evaporative condenser are arranged in the first adsorption tank, and a second adsorption bed and a second evaporative condenser are arranged in the second adsorption tank;
the condenser is arranged in the heat storage water tank; the heat storage water tank is selectively communicated with the first adsorption bed or the second adsorption bed through a first circulating pipeline;
the cooling water tank is selectively communicated with the first adsorption bed and the second evaporative condenser in sequence through a second circulating pipeline or sequentially passes through the second adsorption bed and the first evaporative condenser;
the cold water carrying tank can be selectively communicated with the first evaporative condenser or the second evaporative condenser through a third circulating pipeline;
the indoor heat exchange equipment is connected with the cold water carrying tank for heat exchange.
5. The hybrid energy utilizing ventilation system for passive ventilation and adsorption refrigeration of claim 4, wherein a vacuum is drawn in said first adsorption tank and said second adsorption tank.
6. The combined energy utilization ventilation system for passive ventilation and adsorption refrigeration according to claim 4, wherein when the hot water storage tank is communicated with the first adsorption bed through a first circulation pipeline, the cooling water tank is communicated with the second adsorption bed and the first evaporative condenser through a second circulation pipeline in sequence, and the cold water storage tank is communicated with the second evaporative condenser through a third circulation pipeline;
when the heat storage water tank is communicated with the second adsorption bed through a first circulating pipeline, the cooling water tank is sequentially communicated with the first adsorption bed and a second evaporative condenser through a second circulating pipeline; and the cold water carrying tank is communicated with the first evaporative condenser through a third circulating pipeline.
7. The ventilation system for combined energy utilization of passive ventilation and absorption refrigeration according to claim 4, further comprising a controller, wherein the first circulation pipeline, the second circulation pipeline and the third circulation pipeline are connected with each other and provided with a plurality of control valves, the plurality of control valves are electrically connected with the controller, and the first circulation pipeline, the second circulation pipeline and the third circulation pipeline are provided with pumps.
8. The ventilation system for combined energy utilization of passive ventilation and absorption refrigeration according to claim 4, wherein the temperature of water in the heat storage water tank is 55-100 ℃, the temperature of water in the cooling water tank is 18-32 ℃, and the temperature of water in the cold carrying water tank is 7-12 ℃.
9. The combined passive ventilation and absorption refrigeration energy source utilizing ventilation system according to claim 1, wherein the indoor heat exchange device is a fan coil.
10. The ventilation system for hybrid energy usage of passive ventilation and absorption refrigeration of claim 3, wherein the inside of the waste heat recovery device is R22 refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787514.0A CN114992743A (en) | 2022-07-06 | 2022-07-06 | Passive ventilation and adsorption refrigeration combined energy utilization ventilation system |
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| CN202210787514.0A CN114992743A (en) | 2022-07-06 | 2022-07-06 | Passive ventilation and adsorption refrigeration combined energy utilization ventilation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963605A (en) * | 2020-11-05 | 2022-08-30 | 河南牧业经济学院 | Portable refrigerator and adsorption type refrigerating device for refrigerator |
| CN115468330A (en) * | 2022-09-22 | 2022-12-13 | 哈尔滨商业大学 | Magnetic suction conversion type adsorption refrigeration/heat pump air conditioning system |
-
2022
- 2022-07-06 CN CN202210787514.0A patent/CN114992743A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963605A (en) * | 2020-11-05 | 2022-08-30 | 河南牧业经济学院 | Portable refrigerator and adsorption type refrigerating device for refrigerator |
| CN114963605B (en) * | 2020-11-05 | 2024-02-06 | 河南牧业经济学院 | Portable refrigerator and adsorption type refrigerating device for refrigerator |
| CN115468330A (en) * | 2022-09-22 | 2022-12-13 | 哈尔滨商业大学 | Magnetic suction conversion type adsorption refrigeration/heat pump air conditioning system |
| CN115468330B (en) * | 2022-09-22 | 2023-05-23 | 哈尔滨商业大学 | Magnetic absorption conversion type adsorption refrigeration/heat pump air conditioning system |
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