CN112413753B - Cascade energy storage type composite refrigeration and dehumidification integrated system device and control method - Google Patents
Cascade energy storage type composite refrigeration and dehumidification integrated system device and control method Download PDFInfo
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- CN112413753B CN112413753B CN202011324458.4A CN202011324458A CN112413753B CN 112413753 B CN112413753 B CN 112413753B CN 202011324458 A CN202011324458 A CN 202011324458A CN 112413753 B CN112413753 B CN 112413753B
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
- F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
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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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention provides a cascade energy storage type composite refrigeration and dehumidification integrated system device and a control method, wherein the system device comprises a base station room, a dehumidification unit and a cooling unit which are connected in a circulating manner, and the cooling unit comprises an air cooling device, a cold storage device and a mechanical refrigeration device which are connected in parallel; the dehumidification unit comprises a dehumidification device and a regeneration device; gas flows through dehumidification unit and cooling unit in the basic station room in proper order, flows back to the basic station room after the dehumidification cooling. The control method comprises the following steps: according to the humidity and the ambient temperature of exhaust gas in the base station room, the control gas enters the dehumidifying device for dehumidification, and enters the cooling unit for cooling by adopting the air cooling device, the cold storage device and the mechanical refrigerating device, and the gas after cooling and dehumidification flows back to the base station to cool the base station room. The invention realizes the maximum application of natural cold energy and greatly reduces the electric quantity consumption of the air conditioning system of the base station room.
Description
Technical Field
The invention belongs to the technical field of refrigeration and dehumidification, relates to a refrigeration and dehumidification device, and particularly relates to a cascade energy storage type composite refrigeration and dehumidification integrated system device and a control method.
Background
With the acceleration of information construction in China and the development of hotspot information communication technologies such as cloud computing, internet of things, block chains, big data, high-performance computing and the like, the scale of a communication network is rapidly expanded, the problem of energy consumption in the communication industry is gradually highlighted, and the energy consumption expenditure of communication equipment becomes an important cost expenditure in the industry. In addition to power consumption of office buildings, factories, and the like, refrigeration systems in communication base stations distributed all over the world are the most important cause of high power consumption.
At present, most machine rooms of communication base stations mainly control the internal environment in an air-conditioning refrigeration mode, but the simple temperature control mode has two defects: firstly, the air conditioner must be started all year round in the machine room for refrigeration, the total electricity consumption is too high, and the energy is greatly wasted; secondly, when the power system of the machine room breaks down, the air-conditioning refrigerator can not work normally, maintenance personnel of a related base station must arrive at the site as soon as possible to supply power to the machine room for emergency, otherwise, communication equipment cannot work or even be burnt out due to the fact that the heat dissipation capacity is large, the temperature is too high and the like in the machine room, and particularly in remote mountainous areas or areas with more power system faults and machine rooms which are not maintained by people.
Therefore, research and development of novel efficient base station air conditioner energy-saving technology are imperative. In recent years, a few cases of combining a phase-change cold storage technology with a refrigeration air-conditioning system appear at home and abroad, but the system has a single structure and low overall operation efficiency, cannot realize accurate regulation and control of the air temperature and humidity in a machine room, and has an unobvious energy-saving effect.
CN102538104A discloses an air conditioning unit that dehumidification and evaporation refrigeration combine together, including dehumidification cooling module, wait wet cooling module, evaporation refrigeration module, solution regeneration circulating pump, solution cooling heat exchanger, solution heating heat exchanger. The invention saves a mechanical refrigeration system, thereby saving mechanical refrigeration energy consumption. But the working conditions of the evaporation refrigeration module are strict, and the whole system has instability.
CN111197832A discloses a rotary heat recovery type evaporative cooling and mechanical refrigeration combined air conditioning unit, which comprises a unit shell, wherein an upper air duct and a lower air duct which are vertically distributed are formed in the unit shell, and a rotary heat recoverer, a vertical pipe indirect evaporative cooling unit, a mechanical refrigeration unit and a rotary dehumidifier are sequentially arranged in the unit shell along the flowing direction of inlet air. The invention fully improves the energy efficiency ratio of the unit by complementing the advantages of evaporative cooling and mechanical refrigeration.
CN110726187A discloses a refrigeration device with low-temperature refrigeration and dehumidification functions, which comprises a condenser, a liquid storage device, a filter, a three-way valve and an evaporator to form a low-temperature heat exchange loop; the dehumidifying device also comprises a dehumidifying loop consisting of a condenser, an electromagnetic valve and a dehumidifying condenser. The evaporator and the evaporator fan of the dehumidifying condenser absorb the heat load in the room to refrigerate or dehumidify the room. The invention cools and dehumidifies the gas by mechanical refrigeration, and has the problem of high energy consumption.
The existing refrigeration and dehumidification device has the problems of high energy consumption, unstable system performance and the like, so that the refrigeration and dehumidification device has the characteristics of simple structure, stable system performance and the like on the premise of ensuring low energy consumption, and becomes the problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cascade energy storage type composite refrigeration and dehumidification integrated system device and a control method.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a cascade energy storage type composite refrigeration and dehumidification integrated system device, which comprises a base station room, a dehumidification unit and a cooling unit which are connected in a circulating manner, wherein the cooling unit comprises an air cooling device, a cold storage device and a mechanical refrigeration device which are connected in parallel; the dehumidification unit comprises a dehumidification device and a regeneration device; gas flows through dehumidification unit and cooling unit in proper order in the basic station room, flows back to the basic station room after the dehumidification cooling.
The dehumidification unit is arranged to dehumidify the gas exhausted from the base station room, the dehumidifying agent is regenerated, and in addition, the air cooling device, the cold storage device and the mechanical refrigeration device are reasonably started to cool and refrigerate the gas according to different requirements, wherein the cold storage device can store low-temperature cold source cold energy in the environment and utilize the cold energy as required, the mechanical refrigeration device only serves as auxiliary refrigeration to ensure the cooling temperature of the gas, the maximum application of natural cold energy can be realized, and the electric quantity consumption of the air conditioning system of the base station room is greatly reduced.
As a preferred technical solution of the present invention, a thermoelectric cooling device and a thermoelectric controller electrically connected to the thermoelectric cooling device are disposed in the base station room, and the thermoelectric controller is further electrically connected to the solar power generation panel and the storage battery.
The invention further cools the base station room by utilizing the thermoelectric refrigerating device, and the thermoelectric refrigerating device utilizes solar energy by adopting the solar power generation panel to supply energy, thereby enhancing the energy-saving effect.
Preferably, the thermoelectric controller is further electrically connected to a charge detector disposed on the storage battery, and the charge detector is configured to detect the charge of the storage battery; the thermoelectric controller receives a feedback signal sent by the electric quantity detector and controls the charging and discharging of the storage battery.
Preferably, the thermoelectric cooling device comprises at least one thermoelectric cooling module, the thermoelectric cooling module comprises at least one N-type semiconductor and at least one P-type semiconductor which are connected in series in an interleaving mode, and the adjacent N-type semiconductors and the adjacent P-type semiconductors are connected through the conductive substrate.
Preferably, the conductive substrates include a hot-side conductive substrate and a cold-side conductive substrate, and the hot-side conductive substrate is located between the P-type semiconductor and the N-type semiconductor and the cold-side conductive substrate is located between the N-type semiconductor and the P-type semiconductor along the current direction.
Preferably, the hot-side conductive substrate is located on the same side, and the cold-side conductive substrate is located on the same side.
Preferably, the thermoelectric refrigerating device comprises a hot end heat conduction layer and a cold end heat conduction layer, the hot end heat conduction layer is tightly attached to the hot end conductive substrate, and the cold end heat conduction layer is tightly attached to the cold end conductive substrate.
Preferably, a fin structure is arranged on the surface of one side of the hot end heat conduction layer, and the fin structure is positioned on one side far away from the hot end conductive substrate.
Preferably, a cold storage layer is arranged close to the cold-end heat conduction layer, and a phase-change cold storage material is arranged in the cold storage layer.
Preferably, the thermoelectric refrigeration modules are arranged between the hot side heat conducting layer and the cold side heat conducting layer in a staggered mode.
The thermoelectric refrigeration modules are arranged in a staggered mode, so that the temperature field in the cold storage layer is more uniform, and radiation cooling to the base station room is facilitated.
Preferably, the base station room is provided with an air outlet, the air outlet is provided with a circulating fan, and the air outlet is connected to the dehumidifying unit.
Preferably, a humidity sensor is further disposed at the air outlet, and the humidity sensor is used for detecting the humidity of the air discharged from the air outlet.
Preferably, a closed heat dissipation channel is formed between the hot end heat conduction layer and the base station room.
Preferably, a cooling space is formed between the cold storage layer and the base station room.
As a preferable technical solution of the present invention, the dehumidifying device includes a first housing in which a dehumidifying agent is injected, and a first sprayer is disposed above an inside of the first housing.
Preferably, a first heat storage pipe bundle is arranged above the liquid level in the first shell, the first heat storage pipe bundle comprises at least one horizontally arranged first heat storage pipe, and a phase change heat storage material is arranged in the first heat storage pipe.
According to the invention, the dehumidifying agent is sprayed to be atomized into small droplets, the dispersed small droplets absorb a large amount of moisture in the air, the humidity of the air is obviously reduced after partial moisture is removed, and the phase-change heat storage material in the first heat storage pipe stores the heat in the droplets, so that the stability of the operating environment temperature in the dehumidifying device is favorably maintained.
Preferably, the air outlet of the base station room is connected between the first heat storage pipe bundle and the liquid level in the first shell.
Preferably, the first shell is provided with a first circulating pipeline, and the dehumidifying agent in the first shell is connected into the first sprayer through the first circulating pipeline.
Preferably, a regeneration pipeline is externally connected to the first circulation pipeline, and the regeneration pipeline is connected to a regeneration device.
Preferably, a buffer tank is arranged on the regeneration pipeline.
Preferably, the desiccant comprises a lithium chloride solution and/or a calcium chloride solution.
Preferably, the phase change heat storage material comprises sodium carbonate decahydrate.
As a preferable technical solution of the present invention, the regeneration device includes a second housing, a second heat storage pipe bundle and a second sprayer are disposed in the second housing, the second sprayer is located above the second heat storage pipe bundle, and an exhaust fan located above the second sprayer is further disposed in the second housing.
The dehumidifier is regenerated by the regeneration device, so that the recycling of the dehumidifier is realized.
Preferably, the second heat storage pipe bundle comprises at least one horizontally arranged second heat storage pipe, and a phase change heat storage material is arranged in the second heat storage pipe.
According to the invention, partial moisture in the sprayed dehumidifying agent is taken away through ambient air, and heat is stored through the second heat storage pipe, so that the temperature in the regeneration device is kept stable, and the evaporation of the moisture is facilitated.
Preferably, the bottom of the second shell is connected with a liquid storage tank, and the regeneration pipeline is connected to the liquid storage tank.
Preferably, a dehumidifying agent outlet end of the liquid storage tank is connected to the bottom of the first shell, and the regenerated dehumidifying agent enters the dehumidifying device.
Preferably, the liquid storage tank is further connected with a second circulation pipeline, the second circulation pipeline is connected to a second sprayer, a heating heat exchanger is arranged on the second circulation pipeline, and a dehumidifying agent in the liquid storage tank enters the second sprayer through the second circulation pipeline.
Preferably, the heating heat exchanger is circularly connected with a solar heater.
Preferably, the solar heater is connected with a solar heat reservoir in parallel, and a first heat storage material is arranged in the solar heat reservoir.
According to the invention, the dehumidifying agent is heated by the solar heater, the solar heat reservoir is arranged, redundant heat is stored in the solar heat reservoir, and when the power of the solar heater is low in cloudy days, the solar heat reservoir is adopted for supplementing heat.
Preferably, at least one air inlet is formed below the side wall of the second shell.
Preferably, the first heat storage material comprises barium hydroxide octahydrate.
Preferably, the phase change heat storage material comprises sodium carbonate decahydrate.
As a preferred technical scheme of the present invention, the cooling unit is connected with the air outlet end of the dehumidifying device through an air outlet pipeline, the outlet end of the air outlet pipeline is respectively connected to the air cooling device, the cold storage device and the mechanical refrigerating device, the air cooling device and the cold storage device both use ambient air as a cold source, and gas is discharged through the air cooling device, the cold storage device and the mechanical refrigerating device and then is connected to a cold air pipeline.
Preferably, the outlet end of the cold air pipeline is respectively connected to the heat dissipation channel and the cooling space.
Preferably, the pipeline that the gas vent of base station room and dehydrating unit are connected is external to have a cooling branch pipe, the exit end of cooling branch pipe inserts the gas outlet pipeline, through the cooling branch pipe, gaseous direct entering cooling unit.
Preferably, a cooling valve is arranged on the cooling branch pipe.
Preferably, the cold storage device comprises at least two cold storages arranged in parallel, phase change cold storage materials are injected into the cold storages, and the cold storages use ambient air as a cold source to store cold.
The cold storage device is arranged to store cold energy in the environment at any time, and when the cooling capacity of the air cooling device is insufficient, the cold storage device is started to cool the gas, so that the cold source of the environment is further utilized.
Preferably, the mechanical refrigeration device comprises a compressor, a radiator, a liquid collecting tank, a throttle valve and a refrigerant heat exchanger which are circularly connected along the flow direction of the refrigerant, the gas outlet pipeline is connected to the refrigerant heat exchanger, and the gas enters the cold gas pipeline after being cooled by the refrigerant heat exchanger.
According to the invention, by arranging the mechanical refrigerating device, when the air cooling device and the cold storage device can not achieve the cooling effect of gas, the mechanical refrigerating device is started, so that the temperature in the base station room can not be too high, and the problems of component burnout and the like caused by the too high temperature in the base station room are avoided.
Preferably, a temperature sensor is arranged on the cold air pipeline and used for detecting the temperature of the gas in the cold air pipeline.
Preferably, the phase-change cold storage material comprises polyethylene glycol and/or fatty acid substances.
Preferably, the fatty acid substances comprise capric acid and lauric acid.
Preferably, the mass ratio of capric acid to lauric acid is 1.8 to 2.1, for example, the mass ratio is 1.80.
As a preferred technical solution of the present invention, the system device further includes an ambient temperature sensor, and the ambient temperature sensor is used for detecting an ambient temperature.
Preferably, the system device still include the system control ware, the system control ware respectively electric connection humidity transducer, ambient temperature sensor, cooling valve, dehydrating unit, air cooling device, store up cold charge and mechanical refrigerating plant, the system control ware receive humidity transducer, ambient temperature sensor and temperature sensor's signal respectively, feedback control cooling valve, dehydrating unit, air cooling device, store up cold charge and mechanical refrigerating plant's start-up.
In a second aspect, the present invention provides a control method for a cascade energy storage type composite refrigeration and dehumidification integrated system apparatus according to the first aspect, where the control method includes:
according to the humidity and the ambient temperature of exhaust gas in the base station room, the control gas enters the dehumidifying device for dehumidification, and enters the cooling unit for cooling by adopting the air cooling device, the cold storage device and the mechanical refrigerating device, and the gas after cooling and dehumidification flows back to the base station to cool the base station room.
According to the invention, the gas in the base station room is firstly dehumidified, and the dehumidified gas enters the air cooling device, the cold storage device and the mechanical refrigerating device to be respectively cooled, wherein the air cooling device, the cold storage device and the mechanical refrigerating device can be reasonably started according to the ambient temperature and the gas temperature, so that the maximum utilization of the ambient cold quantity is achieved.
As a preferred technical solution of the present invention, the control method specifically includes:
s100, detecting the humidity of the gas exhausted from the base station room by using a humidity sensor, and entering S101;
s101, judging whether the humidity of the gas is larger than a relative humidity threshold value by a controller, and if so, entering a step S102; if the judgment result is negative, the step S103 is entered;
s102, a system controller controls the dehumidifying device to start in a feedback mode, a cooling valve is closed, the dehumidifying device utilizes a dehumidifying agent to spray and dehumidify gas, and the dehumidified gas enters S200;
s103, the system controller controls the dehumidification device to be closed in a feedback mode, a cooling valve is started, and the step S200 is carried out;
s200, enabling the gas to enter a cooling unit, detecting the ambient temperature by using an ambient temperature sensor, and entering S201;
s201, the system controller judges whether the ambient temperature is greater than a first ambient temperature threshold value, if so, the step S203 is executed; if the judgment result is negative, the step S202 is entered;
s202, the system controller controls the air cooling device to start in a feedback mode, the air cooling device conducts heat exchange on gas through ambient cold air to reduce the temperature, and the cooled gas enters S300;
s203, the system controller judges whether the environmental temperature is larger than a second environmental temperature threshold value, if so, the step S205 is executed; if the judgment result is negative, the step S204 is carried out;
s204, the system controller controls the air cooling device and the cold storage device to start in a feedback mode, the air cooling device and the cold storage device respectively perform cooling and heat exchange on the gas, and the cooled gas enters S300;
s205, the system controller controls the mechanical refrigerating device to start in a feedback mode, a refrigerant heat exchanger of the mechanical refrigerating device conducts heat exchange and cooling on gas, and the cooled gas enters S400;
s300, detecting the temperature of gas in the cold gas pipeline by using a temperature sensor, and entering S301;
s301, the system controller judges whether the gas temperature in the cold gas pipeline is greater than a gas temperature threshold value, and if the judgment result is yes, the step S205 is executed; if the judgment result is negative, the step S400 is entered;
and S400, enabling the temperature and the humidity of the gas to meet requirements, entering a base station room, and cooling the heat dissipation channel and the cooling space respectively.
As a preferable technical solution of the present invention, in step S102, the desiccant concentration reaches a regeneration concentration for regeneration, and the regeneration method includes:
the dehumidifying agent flows through the buffer tank and the liquid storage tank through the regeneration pipeline, then enters the heating heat exchanger through the second circulation pipeline, exchanges heat with the heat medium in the solar heater and the solar heat reservoir, then enters the regeneration device through spraying, the air is contacted with the dehumidifying agent to take the moisture in the dehumidifying agent away from the regeneration device, and the dehumidifying agent in the liquid storage tank enters the dehumidifying device after the concentration of the dehumidifying agent reaches the use concentration.
Preferably, the regeneration concentration is 33 to 35wt%, for example, the regeneration concentration is 33.0wt%, 33.2wt%, 33.4wt%, 33.6wt%, 33.8wt%, 34.0wt%, 34.2wt%, 34.4wt%, 34.6wt%, 34.8wt%, or 35wt%.
Preferably, said concentration is used in the range of 52 to 54wt%, for example, 52.0wt%, 52.2wt%, 52.4wt%, 52.6wt%, 52.8wt%, 53.0wt%, 53.2wt%, 53.4wt%, 53.6wt%, 53.8wt% or 54.0wt%.
In a preferred embodiment of the present invention, the relative humidity threshold is 68 to 70%, for example, 68.0%, 68.2%, 68.4%, 68.6%, 68.8%, 69.0%, 69.2%, 69.4%, 69.6%, 69.8%, or 70.0%.
Preferably, the first environmental temperature threshold is 14 to 16 ℃, e.g., the first environmental temperature threshold is 14.0 ℃, 14.2 ℃, 14.4 ℃, 14.6 ℃, 14.8 ℃, 15.0 ℃, 15.2 ℃, 15.4 ℃, 15.6 ℃, 15.8 ℃ or 16.0 ℃.
Preferably, the second ambient temperature threshold is 26 to 28 ℃, e.g., 26.0 ℃, 26.2 ℃, 26.4 ℃, 26.6 ℃, 26.8 ℃, 27.0 ℃, 27.2 ℃, 27.4 ℃, 27.6 ℃, 27.8 ℃ or 28.0 ℃.
Preferably, the gas temperature threshold is 20 to 22 ℃, e.g., 20.0 ℃, 20.2 ℃, 20.4 ℃, 20.6 ℃, 20.8 ℃, 21.0 ℃, 21.2 ℃, 21.4 ℃, 21.6 ℃, 21.8 ℃ or 22.0 ℃.
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes the low-temperature environment cold source to cool the gas through the cold storage device and the air cooling device, and is supplemented with mechanical refrigeration, thereby realizing the maximum application of natural cold energy and greatly reducing the electric quantity consumption of the air conditioning system of the base station room; in addition, carry out the dehumidification through dehydrating unit to gas, carry out online regeneration through regenerating unit to the desiccant, guarantee dehumidification system's continuous steady operation, moreover, dehydrating unit and air cooling device, store up many operating modes such as cold charge device and mechanical refrigeration device and jointly operate and adjust, realized the accurate regulation and control of air temperature and humidity in the basic station room, have characteristics such as simple operation.
Drawings
FIG. 1 is a schematic structural diagram of a cascade energy storage type composite refrigeration and dehumidification integrated system device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a thermoelectric cooling module according to one embodiment of the present invention;
fig. 3 is a flowchart of a control method of a cascade energy storage type composite refrigeration and dehumidification integrated system device according to an embodiment of the present invention.
Wherein, 1-a regeneration device; 2-a buffer tank; 3-a liquid storage tank; 4-heating heat exchanger; 5-a solar heater; 6-solar heat storage; 7-a regeneration line; 8-a dehumidifying device; 9-air cooling device; 10-a cold storage device; 11-a cooling valve; 12-a mechanical refrigeration device; 13-heat dissipation channels; 14-a solar power panel; 15-a thermoelectric refrigeration device; 16-a thermoelectric controller; 17-a storage battery; 18-base station house; 19-N type semiconductor; a 20-P type semiconductor; 21-a hot end heat conducting layer; 22-cold side conductive substrate; 23-cold storage layer; 24-a hot side conductive substrate; 25-cold end heat conducting layer.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes necessary piping, conventional valves and general pump equipment for achieving the complete process, but the above contents do not belong to the main inventive points of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not particularly limited to this.
The technical solution of the present invention is further explained by the following embodiments.
In a specific embodiment, the invention provides a cascade energy storage type composite refrigeration and dehumidification integrated system device, as shown in fig. 1, the system device comprises a base station room 18, a dehumidification unit and a temperature reduction unit which are connected in a circulating manner, wherein the temperature reduction unit comprises an air cooling device 9, a cold storage device 10 and a mechanical refrigeration device 12 which are connected in parallel; the dehumidification unit comprises a dehumidification device 8 and a regeneration device 1; the gas in the base station room 18 flows through the dehumidification unit and the cooling unit in sequence, and flows back to the base station room 18 after being dehumidified and cooled.
In the invention, the dehumidifying unit is arranged to dehumidify the gas exhausted from the base station room 18 and regenerate the dehumidifying agent, and in addition, the air cooling device 9, the cold storage device 10 and the mechanical refrigerating device 12 are reasonably started to cool the gas according to different requirements, wherein the cold storage device 10 can store cold energy of a cold source in a low-temperature environment and utilize the cold energy as required, the mechanical refrigerating device 12 only serves as auxiliary refrigeration to ensure the cooling temperature of the gas, so that the maximum application of natural cold energy can be realized, and the electric consumption of an air conditioning system of the base station room 18 is greatly reduced.
The base station room 18 is internally provided with the thermoelectric refrigerating device 15 and the thermoelectric controller 16 electrically connected with the thermoelectric refrigerating device 15, and the thermoelectric controller 16 is also electrically connected with the solar power generation panel 14 and the storage battery 17. Further, the thermoelectric controller 16 is also electrically connected to a power detector disposed on the storage battery 17; the thermoelectric controller 16 receives a feedback signal from the charge detector and controls the charging and discharging of the battery 17.
The thermoelectric cooling device 15 comprises at least one thermoelectric cooling module, as shown in fig. 2, the thermoelectric cooling module comprises at least one N-type semiconductor 19 and at least one P-type semiconductor 20 connected in series in an interleaved manner, and the adjacent N-type semiconductor 19 and P-type semiconductor 20 are connected by an electrically conductive substrate. Further, the conductive substrates include a hot side conductive substrate 24 and a cold side conductive substrate 22, and the hot side conductive substrate 24 is located between the P-type semiconductor 20 and the N-type semiconductor 19, and the cold side conductive substrate 22 is located between the N-type semiconductor 19 and the P-type semiconductor 20 along the current direction. The hot side conductive substrate 24 is on the same side and the cold side conductive substrate 22 is on the same side. The thermoelectric refrigerating device 15 comprises a hot-end heat conduction layer 21 and a cold-end heat conduction layer 25, the hot-end heat conduction layer 21 is attached to the hot-end conductive substrate 24, the cold-end heat conduction layer 25 is attached to the cold-end conductive substrate 22, and a closed heat dissipation channel 13 is formed between the hot-end heat conduction layer 21 and the base station room 18. The surface of one side of the hot end heat conduction layer 21 is provided with a fin structure, and the fin structure is positioned on the side far away from the hot end conductive substrate 24; a cold storage layer 23 is arranged close to the cold end heat conduction layer 25, a cooling space is formed between the cold storage layer 23 and the base station room 18, and phase change cold storage materials are arranged in the cold storage layer 23; the thermoelectric refrigeration modules are arranged between the hot end heat conduction layer 21 and the cold end heat conduction layer 25 in a staggered mode, so that the temperature field in the cold storage layer 23 is more uniform, and radiation cooling to the base station room 18 is facilitated. In addition, the base station room 18 is provided with an air outlet, a circulating fan and a humidity sensor are arranged at the air outlet, and the air outlet is connected to the dehumidifying unit.
The dehumidifying device 8 comprises a first shell injected with a dehumidifying agent, a first sprayer is arranged above the inside of the first shell, a first heat storage pipe bundle is arranged above the liquid level in the first shell, the first heat storage pipe bundle comprises at least one first heat storage pipe horizontally arranged, and a phase-change heat storage material is arranged in the first heat storage pipe. According to the invention, the dehumidifying agent is sprayed to be atomized into small droplets, the dispersed small droplets absorb a large amount of moisture in the air, the humidity of the air is obviously reduced after partial moisture is removed, and the phase-change heat storage material in the first heat storage pipe stores the heat in the droplets, so that the stability of the operating environment temperature in the dehumidifying device 8 is favorably maintained.
Further, an exhaust port of the base station room 18 is interposed between the first heat storage pipe bundle and the liquid level inside the first enclosure. The first shell is provided with a first circulating pipeline, and a dehumidifying agent in the first shell is connected into the first sprayer through the first circulating pipeline. The first circulation pipeline is externally connected with a regeneration pipeline 7 connected with the regeneration device 1, and the regeneration pipeline 7 is provided with a buffer tank 2. The dehumidifying agent comprises lithium chloride solution and/or calcium chloride solution, and the phase-change heat storage material comprises sodium carbonate decahydrate.
The regeneration device 1 comprises a second shell, a second heat storage pipe bundle and a second sprayer are arranged in the second shell, the second sprayer is positioned above the second heat storage pipe bundle, and an exhaust fan positioned above the second sprayer is also arranged in the second shell. Furthermore, the second heat storage pipe bundle comprises at least one second heat storage pipe which is horizontally arranged, and the phase-change heat storage material is arranged in the second heat storage pipe. The bottom of the second shell is connected with a liquid storage tank 3, and further, a regeneration pipeline 7 is connected with the liquid storage tank 3; the dehumidifying agent outlet end of the liquid storage tank 3 is connected to the bottom of the first shell, the regenerated dehumidifying agent enters the dehumidifying device 8, and at least one air inlet is formed in the lower portion of the side wall of the second shell.
The liquid storage tank 3 is also connected with a second circulating pipeline, the second circulating pipeline is connected to a second sprayer, a heating heat exchanger 4 is arranged on the second circulating pipeline, a dehumidifying agent in the liquid storage tank 3 enters the second sprayer through the second circulating pipeline, the heating heat exchanger 4 is circularly connected with a solar heater 5, the solar heater 5 is connected with a solar heat reservoir 6 in parallel, and a first heat storage material is arranged in the solar heat reservoir 6.
The first heat storage material includes barium hydroxide octahydrate, and the phase change heat storage material includes sodium carbonate decahydrate.
The cooling unit is connected through going out the gas piping with dehydrating unit 8's the end of giving vent to anger, goes out the exit end on gas piping and inserts air cooling device 9, cold storage device 10 and mechanical refrigerating plant 12 respectively, and air cooling device 9 all uses low temperature environment air as the cold source with cold storage device 10, and gaseous warp all insert the cold air pipeline after air cooling device 9, cold storage device 10 and mechanical refrigerating plant 12 discharge, and the exit end on cold air pipeline inserts heat dissipation channel 13 and cooling space respectively, is provided with temperature sensor on the cold air pipeline.
The pipeline that the gas vent of base station room 18 and dehydrating unit 8 are connected is external to have a cooling branch pipe, and the exit end of cooling branch pipe inserts the gas outlet pipeline, and through cooling branch pipe, gaseous direct entering cooling unit, furtherly is provided with cooling valve 11 on the cooling branch pipe.
The cold storage device 10 comprises at least two cold storage devices which are arranged in parallel, phase-change cold storage materials are injected into the cold storage devices, and the cold storage devices store cold energy by taking low-temperature ambient air as a cold source.
The mechanical refrigeration device 12 comprises a compressor, a radiator, a liquid collecting tank, a throttle valve and a refrigerant heat exchanger which are circularly connected along the flow direction of a refrigerant, wherein an air outlet pipeline is connected with the refrigerant heat exchanger, and gas enters a cold air pipeline after being cooled by the refrigerant heat exchanger.
The phase-change cold storage material comprises polyethylene glycol and/or fatty acid substances, and further the fatty acid substances comprise capric acid and lauric acid, wherein the mass ratio of the capric acid to the lauric acid is 1.8-2.1.
In addition, the system device comprises an ambient temperature sensor, wherein the ambient temperature sensor is used for detecting ambient temperature; further, the system controller is electrically connected with the humidity sensor, the ambient temperature sensor, the cooling valve 11, the dehumidifying device 8, the air cooling device 9, the cold storage device 10 and the mechanical refrigerating device 12, receives signals of the humidity sensor, the ambient temperature sensor and the temperature sensor, and controls the starting of the cooling valve 11, the dehumidifying device 8, the air cooling device 9, the cold storage device 10 and the mechanical refrigerating device 12 in a feedback mode.
In another specific embodiment, the invention provides a control method of the cascade energy storage type composite refrigeration and dehumidification integrated system device, as shown in fig. 3, where the control method specifically includes:
s100, detecting the humidity of the gas exhausted from the base station room 18 by using a humidity sensor, and entering S101;
s101, judging whether the humidity of the gas is larger than a relative humidity threshold value by a controller, wherein the relative humidity threshold value is 68-70%, and if so, entering a step S102; if the judgment result is negative, the step S103 is entered;
s102, the system controller controls the dehumidifying device 8 to start in a feedback mode, the cooling valve 11 is closed, the dehumidifying device 8 utilizes a dehumidifying agent to spray and dehumidify gas, and the dehumidified gas enters S200;
s103, the system controller controls the dehumidification device 8 to be closed in a feedback mode, starts the cooling valve 11 and enters S200;
s200, enabling the gas to enter a cooling unit, detecting the ambient temperature by using an ambient temperature sensor, and entering S201;
s201, the system controller judges whether the environment temperature is larger than a first environment temperature threshold value, the first environment temperature threshold value is 14-16 ℃, and if the judgment result is yes, the step S203 is executed; if the judgment result is negative, the step S202 is entered;
s202, the air cooling device 9 is controlled to start through feedback of the system controller, the air cooling device 9 conducts heat exchange and cooling on gas through ambient cold air, and the cooled gas enters S300;
s203, the system controller judges whether the environmental temperature is greater than a second environmental temperature threshold value, the second environmental temperature threshold value is 26-28 ℃, if the judgment result is yes, the step S205 is executed; if the judgment result is negative, the step S204 is carried out;
s204, the system controller controls the air cooling device 9 and the cold storage device 10 to start in a feedback mode, the air cooling device 9 and the cold storage device 10 respectively perform cooling and heat exchange on the gas, and the cooled gas enters S300;
s205, the system controller controls the mechanical refrigerating device 12 to start in a feedback mode, a refrigerant heat exchanger of the mechanical refrigerating device 12 conducts heat exchange and cooling on gas, and the cooled gas enters S400;
s300, detecting the temperature of gas in the cold gas pipeline by using a temperature sensor, and entering S301;
s301, the system controller judges whether the temperature of the gas in the cold gas pipeline is greater than a gas temperature threshold value, the gas temperature threshold value is 20-22 ℃, and if the judgment result is yes, the step S205 is executed; if the judgment result is negative, the step S400 is entered;
and S400, enabling the temperature and the humidity of the gas to meet requirements, entering the base station room 18, and cooling the heat dissipation channel 13 and the cooling space respectively.
In step S102, the desiccant concentration reaches a regeneration concentration for regeneration, and the regeneration method includes:
when the concentration of the dehumidifying agent is 33-35 wt%, the dehumidifying agent flows through the buffer tank 2 and the liquid storage tank 3 through the regeneration pipeline 7, then enters the heating heat exchanger 4 through the second circulation pipeline, exchanges heat with the heat medium in the solar heater 5 and the solar heat reservoir 6, then enters the regeneration device 1 through spraying, the air is contacted with the dehumidifying agent, part of water in the dehumidifying agent is separated from the regeneration device 1, and the dehumidifying agent in the liquid storage tank 3 enters the dehumidifying device 8 for use after the concentration of the dehumidifying agent reaches 52-54 wt%.
Application example 1
The application example provides a control method of a cascade energy storage type composite refrigeration and dehumidification integrated system device, which is based on the control method in a specific embodiment, wherein the regeneration concentration is 33wt%; the use concentration is 53wt%; the relative humidity threshold is 68%; the first ambient temperature threshold is 15 ℃; the second ambient temperature threshold is 26 ℃; the gas temperature threshold was 21 ℃.
Application example 2
The application example provides a control method of a cascade energy storage type composite refrigeration and dehumidification integrated system device, which is based on the control method in a specific embodiment, wherein the regeneration concentration is 34wt%; the use concentration was 54wt%; the relative humidity threshold is 70%; the first ambient temperature threshold is 14 ℃; the second ambient temperature threshold is 28 ℃; the gas temperature threshold was 20 ℃.
Application example 3
The application example provides a control method of a cascade energy storage type composite refrigeration and dehumidification integrated system device, which is based on the control method in a specific embodiment, wherein the regeneration concentration is 35wt%; the use concentration was 52wt%; the relative humidity threshold is 69%; the first ambient temperature threshold is 16 ℃; the second ambient temperature threshold is 27 ℃; the gas temperature threshold was 22 ℃.
According to the invention, the cold storage device 10 and the air cooling device 9 are used for cooling the gas by utilizing the low-temperature environment cold source, and the mechanical refrigerating device 12 is used for supplementing, so that the maximum application of natural cold energy can be realized, and the electric quantity consumption of the air conditioning system of the base station room 18 is greatly reduced; in addition, dehumidify gas through dehydrating unit 8, carry out online regeneration to the desiccant through regenerating unit 1, guarantee dehumidification system's continuous steady operation, moreover, many operating modes such as dehydrating unit 8 and air cooling device 9, cold-storage device 10 and mechanical refrigerating plant 12 jointly operate and adjust, have realized the accurate regulation and control of air temperature and humidity in the base station room 18, have characteristics such as simple operation.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein fall within the scope and disclosure of the present invention.
Claims (36)
1. A cascade energy storage type composite refrigeration and dehumidification integrated system device is characterized by comprising a base station room, a dehumidification unit and a cooling unit which are connected in a circulating manner, wherein the cooling unit comprises an air cooling device, a cold storage device and a mechanical refrigeration device which are connected in parallel; the dehumidification unit comprises a dehumidification device and a regeneration device;
the base station room is internally provided with a thermoelectric refrigerating device and a thermoelectric controller electrically connected with the thermoelectric refrigerating device, and the thermoelectric controller is also electrically connected with a solar power generation panel and a storage battery;
the thermoelectric refrigerating device comprises at least one thermoelectric refrigerating module, the thermoelectric refrigerating module comprises at least one N-type semiconductor and at least one P-type semiconductor which are connected in series in a staggered mode, and the adjacent N-type semiconductor and the adjacent P-type semiconductor are connected through a conductive substrate; the conductive substrate comprises a hot-end conductive substrate and a cold-end conductive substrate, the hot-end conductive substrate is positioned between the P-type semiconductor and the N-type semiconductor along the current direction, and the cold-end conductive substrate is positioned between the N-type semiconductor and the P-type semiconductor;
the thermoelectric refrigerating device comprises a hot end heat conduction layer and a cold end heat conduction layer, the hot end heat conduction layer is tightly attached to the hot end conductive substrate, and the cold end heat conduction layer is tightly attached to the cold end conductive substrate;
a cold storage layer is arranged close to the cold end heat conduction layer, and a phase change cold storage material is arranged in the cold storage layer;
a closed heat dissipation channel is formed between the hot end heat conduction layer and the base station room, and a cooling space is formed between the cold storage layer and the base station room;
the cooling unit is connected with the air outlet end of the dehumidifying device through an air outlet pipeline, the outlet end of the air outlet pipeline is respectively connected with the air cooling device, the cold storage device and the mechanical refrigerating device, the air cooling device and the cold storage device both use ambient air as cold sources, gas is respectively connected with the cold air pipeline after being discharged through the air cooling device, the cold storage device and the mechanical refrigerating device, and the outlet end of the cold air pipeline is respectively connected with the heat dissipation channel and the cooling space; the gas in the base station room sequentially flows through the dehumidification unit and the cooling unit, and flows back to the base station room after being dehumidified and cooled;
the base station room is provided with an air outlet, a circulating fan is arranged at the air outlet, the air outlet is connected to the dehumidifying unit, a humidity sensor is further arranged at the air outlet and used for detecting the humidity of gas exhausted from the air outlet, a cooling branch pipe is externally connected to a pipeline connecting the air outlet of the base station room and the dehumidifying device, the outlet end of the cooling branch pipe is connected to an air outlet pipeline, the gas directly enters the cooling unit through the cooling branch pipe, and a cooling valve is arranged on the cooling branch pipe;
the system device also comprises an environment temperature sensor, wherein the environment temperature sensor is used for detecting the environment temperature, a temperature sensor is arranged on the cold air pipeline, and the temperature sensor is used for detecting the temperature of the gas in the cold air pipeline;
the system device still include system controller, system controller be electric connection humidity transducer, ambient temperature sensor, cooling valve, dehydrating unit, air cooling device, store up cold charge and mechanical refrigerating plant respectively, system controller receive humidity transducer, ambient temperature sensor and temperature sensor's signal respectively, feedback control cooling valve, dehydrating unit, air cooling device, store up cold charge and mechanical refrigerating plant's start-up.
2. The system device of claim 1, wherein the thermoelectric controller is further electrically connected to a charge detector disposed on the battery, the charge detector being configured to detect a charge of the battery; the thermoelectric controller receives a feedback signal sent by the electric quantity detector and controls the charging and discharging of the storage battery.
3. The system-assembly of claim 1 wherein said hot side conductive substrates are on the same side and said cold side conductive substrates are on the same side.
4. The system according to claim 1, wherein a surface of one side of the hot side heat conductive layer is provided with a fin structure, and the fin structure is positioned on a side far away from the hot side conductive substrate.
5. The system-device of claim 1, wherein the thermoelectric cooling modules are interleaved between a hot heat conducting layer and a cold heat conducting layer.
6. The system device as claimed in claim 1, wherein the dehumidifying device comprises a first housing filled with dehumidifying agent, and a first sprayer is disposed above the inside of the first housing.
7. The system arrangement of claim 6, wherein a first heat storage tube bundle is disposed in the first housing above the liquid level, the first heat storage tube bundle comprising at least one horizontally disposed first heat storage tube, and a phase change heat storage material is disposed in the first heat storage tube.
8. The system set up of claim 7, wherein the base station room exhaust ports are interposed between the first heat storage tube bundle and the liquid level within the first housing.
9. The system set forth in claim 6 wherein said first housing is provided with a first circulation line through which desiccant in the first housing is introduced into the first sprayer.
10. The system arrangement as claimed in claim 9, characterized in that the first circulation line is connected externally with a regeneration line, which is connected to a regeneration device.
11. The system arrangement of claim 10, wherein a buffer tank is disposed on the regeneration line.
12. The system set forth in claim 6 wherein the desiccant comprises a lithium chloride solution and/or a calcium chloride solution.
13. The system set forth in claim 10, wherein the regeneration device comprises a second housing having a second heat storage tube bundle and a second sprayer disposed therein, the second sprayer being disposed above the second heat storage tube bundle, the second housing further having an exhaust fan disposed therein above the second sprayer.
14. The system of claim 13 wherein the second thermal storage tube bundle comprises at least one horizontally disposed second thermal storage tube, the second thermal storage tube having a phase change thermal storage material disposed therein.
15. The system set forth in claim 13, wherein a reservoir tank is connected to a bottom of said second housing, and said regeneration line is connected to said reservoir tank.
16. The system set forth in claim 15, wherein the desiccant outlet port of the reservoir is connected to the bottom of the first housing and the regenerated desiccant enters the desiccant set.
17. The system device as claimed in claim 15, wherein the liquid storage tank is further connected with a second circulation pipeline, the second circulation pipeline is connected to a second sprayer, the second circulation pipeline is provided with a heating heat exchanger, and the desiccant in the liquid storage tank enters the second sprayer through the second circulation pipeline.
18. The system arrangement of claim 17, wherein the heating heat exchanger is cyclically connected to a solar heater.
19. The system set forth in claim 18 wherein a solar thermal reservoir is connected in parallel with the solar heater, the solar thermal reservoir having a first thermal storage material disposed therein.
20. The system of claim 13, wherein at least one air inlet is defined below the second housing sidewall.
21. The system of claim 19 wherein the first heat storage material comprises barium hydroxide octahydrate.
22. The system of claim 14 wherein the phase change heat storage material comprises sodium carbonate decahydrate.
23. The system device as claimed in claim 1, wherein the cold storage device comprises at least two cold storages installed in parallel, phase-change cold storage materials are injected into the cold storages, and the cold storages use ambient air as a cold source to store cold.
24. The system device as claimed in claim 1, wherein the mechanical refrigeration device comprises a compressor, a radiator, a liquid collecting tank, a throttle valve and a refrigerant heat exchanger which are circularly connected along the refrigerant flow direction, the gas outlet pipeline is connected to the refrigerant heat exchanger, and the gas enters the cold gas pipeline after being cooled by the refrigerant heat exchanger.
25. The system set forth in claim 23, wherein said phase change cold storage material comprises polyethylene glycol and/or fatty acids.
26. The system set forth in claim 25 wherein said fatty acids comprise capric acid and lauric acid.
27. The system set forth in claim 26 wherein the mass ratio of capric acid to lauric acid is 1.8 to 2.1.
28. A control method for a cascade energy storage type composite refrigeration and dehumidification integrated system device as claimed in any one of claims 1 to 27, wherein the control method comprises:
according to the humidity and the ambient temperature of exhaust gas in the base station room, the control gas enters the dehumidifying device for dehumidification, and enters the cooling unit for cooling by adopting the air cooling device, the cold storage device and the mechanical refrigerating device, and the gas after cooling and dehumidification flows back to the base station to cool the base station room.
29. The method according to claim 28, wherein the control method specifically comprises:
s100, detecting the humidity of the gas exhausted from the base station room by using a humidity sensor, and entering S101;
s101, judging whether the humidity of the gas is larger than a relative humidity threshold value by a controller, and if so, entering a step S102; if the judgment result is negative, the step S103 is entered;
s102, a system controller controls the dehumidifying device to start in a feedback mode, a cooling valve is closed, the dehumidifying device utilizes a dehumidifying agent to spray and dehumidify gas, and the dehumidified gas enters S200;
s103, the system controller controls the dehumidification device to be closed in a feedback mode, a cooling valve is started, and the step S200 is carried out;
s200, the gas enters a cooling unit, the ambient temperature is detected by an ambient temperature sensor, and the process enters S201;
s201, the system controller judges whether the ambient temperature is greater than a first ambient temperature threshold value, if so, the step S203 is executed; if the judgment result is negative, the step S202 is entered;
s202, the system controller controls the air cooling device to start in a feedback mode, the air cooling device conducts heat exchange and cooling on gas through ambient cold air, and the cooled gas enters S300;
s203, the system controller judges whether the environmental temperature is larger than a second environmental temperature threshold value, if so, the step S205 is executed; if the judgment result is negative, the step S204 is carried out;
s204, the system controller controls the air cooling device and the cold storage device to start in a feedback mode, the air cooling device and the cold storage device respectively perform cooling and heat exchange on the gas, and the cooled gas enters S300;
s205, the system controller controls the mechanical refrigerating device to start in a feedback mode, a refrigerant heat exchanger of the mechanical refrigerating device conducts heat exchange and cooling on gas, and the cooled gas enters S400;
s300, detecting the temperature of gas in the cold gas pipeline by using a temperature sensor, and entering S301;
s301, the system controller judges whether the gas temperature in the cold gas pipeline is greater than a gas temperature threshold value, and if the judgment result is yes, the step S205 is executed; if the judgment result is negative, the step S400 is entered;
and S400, enabling the temperature and the humidity of the gas to meet requirements, entering a base station room, and cooling the heat dissipation channel and the cooling space respectively.
30. The method of claim 29, wherein in step S102, the desiccant concentration is regenerated to a regeneration concentration, and the regeneration method comprises:
the dehumidifying agent flows through the buffer tank and the liquid storage tank through the regeneration pipeline, then enters the heating heat exchanger through the second circulating pipeline, exchanges heat with a heat medium in the solar heater and the solar heat reservoir, then enters the regeneration device through spraying, air is contacted with the dehumidifying agent to bring moisture in the dehumidifying agent away from the regeneration device, and the dehumidifying agent in the liquid storage tank enters the dehumidifying device for use after the concentration of the dehumidifying agent reaches the use concentration.
31. The method of claim 30, wherein the regeneration concentration is 33 to 35wt%.
32. The method of claim 30, wherein said use concentration is 52 to 54wt%.
33. The method of claim 29, wherein the relative humidity threshold is 68-70%.
34. The method of claim 29, wherein the first ambient temperature threshold is between 14 ℃ and 16 ℃.
35. The method of claim 29, wherein the second ambient temperature threshold is between 26 ℃ and 28 ℃.
36. The method of claim 29, wherein the gas temperature threshold is 20-22 ℃.
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| US7654101B2 (en) * | 2007-12-07 | 2010-02-02 | Shapiro Ian M | Split-air stream air conditioning with desiccant dehumidification |
| CN201672615U (en) * | 2010-04-16 | 2010-12-15 | 北京工业大学 | Solar liquid dehumidification dew-point evaporation cooling air conditioning system |
| CN201652667U (en) * | 2010-04-28 | 2010-11-24 | 康奈尔(上海)能源技术有限公司 | Dehumidification air-conditioning device with solar thermoelectric refrigeration and solution absorption |
| CN106765752A (en) * | 2016-12-08 | 2017-05-31 | 田志昶 | A kind of solar energy photovoltaic panel and solution-type air-conditioning energy storage co-feeding system and implementation |
| CN207179881U (en) * | 2017-08-22 | 2018-04-03 | 天津城建大学 | Low energy consumption solution dehumidifying air-conditioning system |
| CN111457514B (en) * | 2020-04-28 | 2024-01-02 | 山东泓麟环境工程技术有限公司 | Energy-saving constant-temperature humidity control air conditioning system capable of utilizing cooling tower for cooling in winter and temperature control dehumidification method |
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