CN113028676B - Refrigerating system and refrigerating method thereof - Google Patents
Refrigerating system and refrigerating method thereof Download PDFInfo
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- CN113028676B CN113028676B CN202110367201.5A CN202110367201A CN113028676B CN 113028676 B CN113028676 B CN 113028676B CN 202110367201 A CN202110367201 A CN 202110367201A CN 113028676 B CN113028676 B CN 113028676B
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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
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
- F25B49/046—Operating intermittently
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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]
Abstract
The invention provides a refrigeration system and a refrigeration method thereof in the technical field of refrigeration, comprising the following steps: the system comprises a cooler, a controller, a heater, a first adsorption bed, a second adsorption bed, a condenser, an evaporator, a first circulating pump, a second circulating pump, a first three-way valve, a second three-way valve, a third three-way valve and a fourth three-way valve, wherein control modules are arranged on the first three-way valve, the second three-way valve, the third three-way valve and the fourth three-way valve, and the control modules are connected with the controller. According to the method, sensible heat in the switching process of the adsorption bed and waste heat of adsorption reaction are recovered through the heat exchange fluid and the heater, deep heat recovery inside the system is achieved, regenerative mode switching and non-regenerative mode switching are judged according to the numerical value of the temperature sensor, and the energy efficiency of the system is effectively improved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigeration system and a refrigeration method thereof.
Background
The adsorption refrigeration can be driven by heat sources such as solar energy, industrial waste heat and geothermal heat, so that the consumption of traditional fossil energy is effectively reduced, the development requirements of energy conservation and emission reduction of the refrigeration technology are met, but the existing adsorption refrigeration technology has the defect of low energy efficiency and limits the popularization and application of the adsorption refrigeration technology. Improving system energy efficiency is a major development direction of current adsorption refrigeration technology.
Through the research and discovery of the prior art documents, the technicians have already proposed a plurality of patents of adsorption refrigerators. The Chinese patent numbers CN201010612546.4 and CN201210333079.0 both realize the compact system by changing the arrangement mode of the components of the adsorption type refrigerator, and do not improve the system from the energy efficiency perspective, and the Chinese patent numbers CN201010154357.7 and CN201610232916.9 both solve the problem of automatic balance or adjustment of the refrigerant in the evaporator under different working conditions of the system, improve the adaptability of the working conditions of the system, and do not relate to the improvement of the energy efficiency of the system.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a refrigeration system and a refrigeration device with the same.
According to the present invention, there is provided a refrigeration system comprising:
a cooler provided with a first outlet pipe for flowing out a cooling fluid;
a controller;
a heater;
a first adsorption bed provided with a second outlet pipe for the outflow of a heat exchange fluid;
a second adsorption bed provided with a third outlet pipe for the outflow of a heat exchange fluid;
the condenser is provided with a first inlet pipe for cooling fluid to enter, and the condenser is connected with the cooler;
the evaporator is connected with the condenser;
the first circulating pump is connected with the cooler;
the second circulating pump is connected with the heater;
a first three-way valve connected to the first circulation pump, the first adsorption bed, and the second adsorption bed;
a second three-way valve connected to the cooler, the second adsorption bed, and the heater;
a third three-way valve connected to the first adsorption bed, the cooler, and the heater;
a fourth three-way valve connected to the second circulation pump, the first adsorption bed, and the second adsorption bed;
the first three-way valve, the second three-way valve, the third three-way valve and the fourth three-way valve are all provided with control modules, and the control modules are connected with the controller;
a first two-way valve is arranged between the condenser and the first adsorption bed, and a second two-way valve is arranged between the condenser and the second adsorption bed;
and a third two-way valve is arranged between the evaporator and the first adsorption bed, and a fourth two-way valve is arranged between the evaporator and the second adsorption bed.
Furthermore, a first temperature sensor is arranged on the second outlet pipe, and a second temperature sensor is arranged on the third outlet pipe.
Further, the first adsorption bed and the second adsorption bed are both heat exchangers with built-in adsorbents.
Further, the heat exchanger is one of a plate type, a tube plate type, a plate fin type, a shell-and-tube type and a fin tube type.
Furthermore, the first adsorption bed and the second adsorption bed adopt a plurality of adsorbents with different reaction temperatures, and the different adsorbents are sequentially placed from high to low according to the temperature in the flowing direction of the heat exchange fluid.
Further, the adsorbent is one of silica gel, zeolite, activated carbon, metal halide and metal hydride.
Furthermore, a second inlet pipe for inflow of the cold carrier fluid and a fourth outlet pipe for outflow of the cold carrier fluid are arranged on the evaporator.
Furthermore, a restrictor for controlling hydraulic pressure is arranged between the condenser and the evaporator.
Furthermore, the heat source of the heater is one of solar energy, industrial waste heat, fuel gas and straw biomass.
A method of producing refrigeration, said method comprising the steps of:
1) starting the refrigeration system;
2) cooling fluid enters the condenser through a first inlet pipe, absorbs heat in the condenser to raise the temperature, then flows into the cooler, continues absorbing heat to raise the temperature and then flows out through a first outlet pipe;
3) the cold carrier fluid enters the evaporator from the second inlet pipe and flows out from the fourth outlet pipe;
4) the controller collects temperature signals of the first temperature sensor and the second temperature sensor and sends execution signals to the first three-way valve, the second three-way valve, the third three-way valve and the fourth three-way valve;
5) the first adsorption bed and the second adsorption bed periodically and alternately heat and cool;
6) when the first adsorption bed is cooled and the second adsorption bed is heated, the first two-way valve and the fourth two-way valve are closed, and the second two-way valve and the third two-way valve are opened;
a) refrigerant gas flows out of the second adsorption bed, enters the condenser through the second two-way valve and is condensed to form refrigerant liquid, the refrigerant liquid flows out of the condenser, enters the evaporator through the throttle and is heated and evaporated to form gas, and the refrigerant gas flows out of the evaporator and enters the first adsorption bed through the third two-way valve;
b) if the temperature value of the first temperature sensor is larger than or equal to the temperature value of the second sensor, the heat exchange fluid flowing out of the cooler enters the heater after passing through the first circulating pump, the first three-way valve, the first adsorption bed and the third three-way valve, and then sequentially flows through the second circulating pump, the fourth three-way valve, the second adsorption bed and the second three-way valve after being heated by the heater and enters the cooler;
if the temperature value of the first temperature sensor is lower than that of the second temperature sensor, entering a non-regenerative mode, wherein the heat exchange fluid from the cooler sequentially flows through a first circulating pump, a first three-way valve, a first adsorption bed and a third three-way valve and enters the cooler, and the heat exchange fluid from the heater sequentially flows through a second circulating pump, a fourth three-way valve, a second adsorption bed and a second three-way valve and enters the heater;
7) when the first adsorption bed is heated and the second adsorption bed is cooled, the second two-way valve and the third two-way valve are closed, and the first two-way valve and the fourth two-way valve are opened;
s1) the refrigerant gas flows out of the first adsorption bed, enters the condenser through the first two-way valve and is condensed into refrigerant liquid, the refrigerant liquid flows out of the condenser, enters the evaporator through the restrictor and is heated and evaporated into gas, and the refrigerant gas flows out of the evaporator and enters the second adsorption bed through the second two-way valve;
s2) if the temperature value of the second temperature sensor is greater than or equal to the temperature value of the first temperature sensor, the system enters a regenerative mode, in the regenerative mode, the heat exchange fluid flowing out of the cooler enters the heater after passing through the first circulating pump, the first three-way valve, the second adsorption bed and the second three-way valve, and after being heated by the heater, the heat exchange fluid sequentially flows through the second circulating pump, the fourth three-way valve, the first adsorption bed and the third three-way valve and enters the cooler;
if the temperature value of the second temperature sensor is smaller than that of the first temperature sensor, the non-regenerative mode is entered, the heat exchange fluid coming out of the cooler sequentially flows through the first circulating pump, the first three-way valve, the second adsorption bed and the second three-way valve and enters the cooler, and the heat exchange fluid coming out of the heater sequentially flows through the second circulating pump, the fourth three-way valve, the first adsorption bed and the third three-way valve and enters the heater.
Compared with the prior art, the invention has the following beneficial effects:
1. the device recovers sensible heat of the switching process of the adsorption bed and waste heat of adsorption reaction through the heat exchange fluid and the heater, and realizes deep heat recovery inside the system, so that the energy efficiency of the system is effectively improved.
2. The method automatically judges the mode switching of the heat regeneration and the non-heat regeneration according to the outlet temperatures of the heat exchange fluids of the two adsorption beds, and ensures the effective promotion of the energy efficiency of the system.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a refrigeration system according to an embodiment of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
A cooler 1, said cooler 1 being provided with a first outlet pipe 2 for the outflow of a cooling fluid;
a controller 3;
a heater 4;
a first adsorption bed 5, wherein the first adsorption bed 5 is provided with a second outlet pipe 6 for flowing out of the heat exchange fluid;
a second adsorption bed 7, wherein the second adsorption bed 7 is provided with a third outlet pipe 8 for flowing out of the heat exchange fluid;
a condenser 9, wherein the condenser 9 is provided with a first inlet pipe 10 for cooling fluid to enter, and the condenser 9 is connected with the cooler 1;
the evaporator 11, the said evaporator 11 couples to said condenser 9;
a first circulation pump 12, said first circulation pump 12 being connected to said cooler 1;
the second circulating pump 13, the said second circulating pump 13 couples to said heater 4;
a first three-way valve 14, the first three-way valve 14 being connected to the first circulation pump 12, the first adsorption bed 5, and the second adsorption bed 7;
a second three-way valve 15, the second three-way valve 15 being connected to the cooler 1, the second adsorption bed 7 and the heater 4;
a third three-way valve 16, the third three-way valve 16 being connected to the first adsorption bed 5, the cooler 1 and the heater 4;
a fourth three-way valve 17, the fourth three-way valve 17 being connected to the second circulation pump 13, the first adsorption bed 5, and the second adsorption bed 7;
the first three-way valve 14, the second three-way valve 15, the third three-way valve 16 and the fourth three-way valve 17 are all provided with a control module 18, and the control module 18 is connected with the controller 3;
a first two-way valve 19 is arranged between the condenser 9 and the first adsorption bed 5, and a second two-way valve 20 is arranged between the condenser 9 and the second adsorption bed 7;
the evaporator is provided with a third two-way valve 21 between the first adsorption bed 5 and the evaporator 10, a fourth two-way valve 22 between the evaporator 11 and the second adsorption bed 7, cooling fluid enters the condenser to be condensed to form condensed liquid and heat exchange fluid, and the first adsorption bed and the second adsorption bed continuously absorb and release heat in the alternate heating and cooling processes to realize internal heat circulation so as to improve the energy efficiency of the system.
Further, a first temperature sensor 23 is arranged on the second outlet pipe 6, and a second temperature sensor 24 is arranged on the third outlet pipe 8, so that a real-time temperature value is obtained and transmitted to the controller, and the controller performs different operations according to different temperatures.
Further, the first adsorption bed 5 and the second adsorption bed 7 are heat exchangers each having an adsorbent therein, so that heat exchange can be performed.
Further, the heat exchanger is one of a plate type, a tube plate type, a plate fin type, a shell-and-tube type and a fin tube type.
Further, the first adsorption bed 5 and the second adsorption bed 7 both use a plurality of adsorbents with different reaction temperatures, and the different adsorbents are placed in the flowing direction of the heat exchange fluid in sequence from high to low according to the temperature.
Furthermore, the adsorbent is one of silica gel, zeolite, activated carbon, metal halide and metal hydride, so that the heat exchange efficiency can be improved.
Furthermore, the evaporator 11 is provided with a second inlet pipe 25 for inflow of cold carrier fluid and a fourth outlet pipe 26 for outflow of cold carrier fluid, whereby the inflow and outflow of cold carrier fluid is controlled.
Further, a restrictor 27 for controlling hydraulic pressure is provided between the condenser 9 and the evaporator 11, whereby transmission efficiency can be improved.
Furthermore, the heat source of the heater 4 is one of solar energy, industrial waste heat, fuel gas and straw biomass, and various different heat sources can be utilized, so that the utilization rate is improved.
A method of refrigeration, said method comprising the steps of:
1) starting the refrigeration system;
2) the cooling fluid enters the condenser 9 through the first inlet pipe 10, absorbs heat in the condenser 9 to heat up, then flows into the cooler 1, continues absorbing heat to heat up and then flows out through the first outlet pipe 2;
3) the cold carrier fluid enters the evaporator 11 through the second inlet duct 25 and exits through the fourth outlet duct 26;
4) the controller 3 collects temperature signals of the first temperature sensor 23 and the second temperature sensor 24, and sends execution signals to the first three-way valve 14, the second three-way valve 15, the third three-way valve 16 and the fourth three-way valve 17;
5) the first adsorption bed 5 and the second adsorption bed 7 periodically alternate heating and cooling;
6) when the first adsorption bed 5 is cooled and the second adsorption bed 7 is heated, the first two-way valve 19 and the fourth two-way valve 22 are closed, and the second two-way valve 20 and the third two-way valve 21 are opened;
a) refrigerant gas flows out of the second adsorption bed 7, enters the condenser 9 through the second two-way valve 20, is condensed to form refrigerant liquid, flows out of the condenser 9, enters the evaporator 11 through the restrictor 27, is heated and evaporated to form gas, flows out of the evaporator 11, and enters the first adsorption bed 5 through the third two-way valve 21;
b) if the temperature value of the first temperature sensor 23 is greater than or equal to the temperature value of the second temperature sensor 23, entering a heat recovery mode, wherein in the heat recovery mode, the heat exchange fluid flowing out of the cooler 1 enters the heater 4 after passing through the first circulating pump 12, the first three-way valve 14, the first adsorption bed 5 and the third three-way valve 16, and then enters the cooler 1 after passing through the second circulating pump 13, the fourth three-way valve 17, the second adsorption bed 7 and the second three-way valve 15 in sequence after being heated by the heater 4;
if the temperature value of the first temperature sensor 23 is lower than the temperature value of the second temperature sensor 24, the non-regenerative mode is entered, the heat exchange fluid from the cooler 1 flows through the first circulation pump 12, the first three-way valve 14, the first adsorption bed 5, the third three-way valve 16 in sequence, enters the cooler 1, and the heat exchange fluid from the heater 4 flows through the second circulation pump 13, the fourth three-way valve 17, the second adsorption bed 7, the second three-way valve 15 in sequence, and enters the heater 4;
7) when the first adsorption bed 5 is heated and the second adsorption bed 7 is cooled, the second two-way valve 20 and the third two-way valve 21 are closed, and the first two-way valve 19 and the fourth two-way valve 22 are opened;
s1), the refrigerant gas flows out of the first adsorption bed 5, enters the condenser 9 through the first two-way valve 19, is condensed into refrigerant liquid, flows out of the condenser 9, passes through the restrictor 27, enters the evaporator 11, is heated and evaporated into gas, flows out of the evaporator 11, passes through the second two-way valve 20, and enters the second adsorption bed 7;
s2), if the temperature value of the second temperature sensor 24 is greater than or equal to the temperature value of the first temperature sensor 23, the system enters a heat recovery mode, in the heat recovery mode, the heat exchange fluid flowing out of the cooler 1 enters the heater 4 after passing through the first circulating pump 12, the first three-way valve 14, the second adsorption bed 7 and the second three-way valve 15, and after being heated by the heater 4, the heat exchange fluid sequentially passes through the second circulating pump 13, the fourth three-way valve 17, the first adsorption bed 5 and the third three-way valve 16 and enters the cooler 1;
if the temperature value of the second temperature sensor 24 is lower than the temperature value of the first temperature sensor 23, the non-regenerative mode is entered, the heat exchange fluid coming out of the cooler 1 sequentially flows through the first circulation pump 12, the first three-way valve 14, the second adsorption bed 7, the second three-way valve 15, enters the cooler 1, and the heat exchange fluid coming out of the heater 4 sequentially flows through the second circulation pump 13, the fourth three-way valve 17, the first adsorption bed 5, the third three-way valve 16, and enters the heater 4.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (1)
1. A method for refrigeration, characterized in that, a refrigeration system is adopted,
the method comprises the following steps:
a cooler (1), the cooler (1) being provided with a first outlet pipe (2) for outflow of a cooling fluid;
a controller (3);
a heater (4);
a first adsorption bed (5), wherein the first adsorption bed (5) is provided with a second outlet pipe (6) for flowing out of the heat exchange fluid;
a second adsorption bed (7), the second adsorption bed (7) being provided with a third outlet pipe (8) for the outflow of a heat exchange fluid;
the condenser (9), the said condenser (9) has first inlet pipe (10) for cooling fluid to enter, the said condenser (9) couples to said cooler (1);
the evaporator (11), the said evaporator (11) couples to said condenser (9);
a first circulation pump (12), said first circulation pump (12) being connected to said cooler (1);
the second circulating pump (13), the said second circulating pump (13) couples to said heater (4);
a first three-way valve (14), the first three-way valve (14) being connected to the first circulation pump (12), the first adsorption bed (5), and the second adsorption bed (7);
a second three-way valve (15), the second three-way valve (15) being connected to the cooler (1), the second adsorption bed (7) and the heater (4);
a third three-way valve (16), the third three-way valve (16) being connected to the first adsorption bed (5), the cooler (1) and the heater (4);
a fourth three-way valve (17), the fourth three-way valve (17) being connected to the second circulation pump (13), the first adsorption bed (5), and the second adsorption bed (7);
the first three-way valve (14), the second three-way valve (15), the third three-way valve (16) and the fourth three-way valve (17) are respectively provided with a control module (18), and the control modules (18) are connected with the controller (3);
a first two-way valve (19) is arranged between the condenser (9) and the first adsorption bed (5), and a second two-way valve (20) is arranged between the condenser (9) and the second adsorption bed (7);
a third two-way valve (21) is arranged between the evaporator (11) and the first adsorption bed (5), and a fourth two-way valve (22) is arranged between the evaporator (11) and the second adsorption bed (7);
a first temperature sensor (23) is arranged on the second outlet pipe (6), and a second temperature sensor (24) is arranged on the third outlet pipe (8);
the first adsorption bed (5) and the second adsorption bed (7) are both heat exchangers with built-in adsorbents;
the heat exchanger is one of a plate type, a tube plate type, a plate fin type, a shell-and-tube type and a fin tube type;
the first adsorption bed (5) and the second adsorption bed (7) both adopt a plurality of adsorbents with different reaction temperatures, and the different adsorbents are sequentially placed from high to low according to the temperature in the flowing direction of the heat exchange fluid;
the adsorbent is one of silica gel, zeolite, activated carbon, metal halide and metal hydride;
a second inlet pipe (25) for inflow of cold carrier fluid and a fourth outlet pipe (26) for outflow of cold carrier fluid are arranged on the evaporator (11);
a throttle (27) for controlling hydraulic pressure is arranged between the condenser (9) and the evaporator (11);
the heat source of the heater (4) is one of solar energy, industrial waste heat, fuel gas and straw biomass;
the method comprises the following steps:
1) starting the refrigeration system;
2) cooling fluid enters the condenser (9) through a first inlet pipe (10), absorbs heat in the condenser (9) to be heated, then flows into the cooler (1), continues to absorb heat to be heated, and then flows out through a first outlet pipe (2);
3) the cold carrier fluid enters the evaporator (11) from the second inlet duct (25) and exits from the fourth outlet duct (26);
4) the controller (3) collects temperature signals of the first temperature sensor (23) and the second temperature sensor (24) and sends execution signals to the first three-way valve (14), the second three-way valve (15), the third three-way valve (16) and the fourth three-way valve (17);
5) the first adsorption bed (5) and the second adsorption bed (7) are periodically and alternately heated and cooled;
6) when the first adsorption bed (5) is cooled and the second adsorption bed (7) is heated, the first two-way valve (19) and the fourth two-way valve (22) are closed, and the second two-way valve (20) and the third two-way valve (21) are opened;
a) refrigerant gas flows out of the second adsorption bed (7), enters the condenser (9) through the second two-way valve (20) and is condensed to form refrigerant liquid, the refrigerant liquid flows out of the condenser (9), enters the evaporator (11) through the throttle (27) and is heated and evaporated to form gas, and the refrigerant gas flows out of the evaporator (11) and enters the first adsorption bed (5) through the third two-way valve (21);
b) if the temperature value of the first temperature sensor (23) is larger than or equal to the temperature value of the second sensor (24), entering a heat recovery mode, wherein in the heat recovery mode, heat exchange fluid flowing out of the cooler (1) enters the heater (4) through the first circulating pump (12), the first three-way valve (14), the first adsorption bed (5) and the third three-way valve (16), and flows through the second circulating pump (13), the fourth three-way valve (17), the second adsorption bed (7) and the second three-way valve (15) in sequence after being heated by the heater (4) to enter the cooler (1);
if the temperature value of the first temperature sensor (23) is smaller than that of the second temperature sensor (24), entering a non-regenerative mode, wherein the heat exchange fluid from the cooler (1) sequentially flows through a first circulating pump (12), a first three-way valve (14), a first adsorption bed (5) and a third three-way valve (16) and enters the cooler (1), and the heat exchange fluid from the heater (4) sequentially flows through a second circulating pump (13), a fourth three-way valve (17), a second adsorption bed (7) and a second three-way valve (15) and enters the heater (4);
7) when the first adsorption bed (5) is heated and the second adsorption bed (7) is cooled, the second two-way valve (20) and the third two-way valve (21) are closed, and the first two-way valve (19) and the fourth two-way valve (22) are opened;
s1), refrigerant gas flows out of the first adsorption bed (5), enters the condenser (9) through the first two-way valve (19) and is condensed to form refrigerant liquid, the refrigerant liquid flows out of the condenser (9), passes through the restrictor (27), enters the evaporator (11) and is heated and evaporated to form gas, and the refrigerant gas flows out of the evaporator (11), passes through the second two-way valve (20) and enters the second adsorption bed (7);
s2), if the temperature value of the second temperature sensor (24) is greater than or equal to the temperature value of the first temperature sensor (23), the system enters a heat recovery mode, in the heat recovery mode, the heat exchange fluid flowing out of the cooler (1) enters the heater (4) through the first circulating pump (12), the first three-way valve (14), the second adsorption bed (7) and the second three-way valve (15), and flows through the second circulating pump (13), the fourth three-way valve (17), the first adsorption bed (5) and the third three-way valve (16) in sequence after being heated by the heater (4) to enter the cooler (1);
if the temperature value of the second temperature sensor (24) is smaller than that of the first temperature sensor (23), the non-regenerative mode is entered, the heat exchange fluid coming out of the cooler (1) sequentially flows through the first circulating pump (12), the first three-way valve (14), the second adsorption bed (7) and the second three-way valve (15), enters the cooler (1), and the heat exchange fluid coming out of the heater (4) sequentially flows through the second circulating pump (13), the fourth three-way valve (17), the first adsorption bed (5) and the third three-way valve (16), and enters the heater (4).
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| CN202110367201.5A CN113028676B (en) | 2021-04-06 | 2021-04-06 | Refrigerating system and refrigerating method thereof |
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| CN202110367201.5A CN113028676B (en) | 2021-04-06 | 2021-04-06 | Refrigerating system and refrigerating method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0285651A1 (en) * | 1986-09-08 | 1988-10-12 | Samuel V Shelton | Dual solid adsorbent bed heat pump and method of operating such a heat pump. |
| CN2615597Y (en) * | 2003-03-31 | 2004-05-12 | 欧阳永定 | Interdynamic heat wave circulating refrigerating system |
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| EP0285651A1 (en) * | 1986-09-08 | 1988-10-12 | Samuel V Shelton | Dual solid adsorbent bed heat pump and method of operating such a heat pump. |
| CN2615597Y (en) * | 2003-03-31 | 2004-05-12 | 欧阳永定 | Interdynamic heat wave circulating refrigerating system |
| US20120000220A1 (en) * | 2008-10-30 | 2012-01-05 | Airbus Operations Gmbh | Adsorption Cooling System And Adsorption Cooling Method For An Aircraft |
| CN204268751U (en) * | 2014-11-04 | 2015-04-15 | 云南师范大学 | A kind of typical heat recovery absorption type refrigerating central air conditioner system |
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