CN219199367U - Heating ventilation air conditioning system utilizing seawater for natural cooling - Google Patents
Heating ventilation air conditioning system utilizing seawater for natural cooling Download PDFInfo
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- CN219199367U CN219199367U CN202223610582.4U CN202223610582U CN219199367U CN 219199367 U CN219199367 U CN 219199367U CN 202223610582 U CN202223610582 U CN 202223610582U CN 219199367 U CN219199367 U CN 219199367U
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Abstract
The utility model relates to the field of new energy offshore wind power, in particular to a heating ventilation air conditioning system naturally cooled by utilizing seawater. A heating ventilation air conditioning system naturally cooled by utilizing seawater comprises an indirect heat exchange module, an integrated cold station module, an air treatment module and a fresh air module; the indirect heat exchange module uses the purified seawater as a natural cold source to exchange heat with the integrated cold station module and the fresh air module; the air treatment module exchanges heat with the integrated cold station module. The device is used in a centralized control center of an offshore wind power plant, and is used for controlling air cleanliness, ambient temperature and humidity and reducing corrosion of a salt spray environment at sea to equipment. The purified seawater is used as a natural cold source, so that the energy consumption of the system is effectively reduced.
Description
Technical Field
The utility model relates to the field of new energy offshore wind power, in particular to a heating ventilation air conditioning system naturally cooled by utilizing seawater.
Background
Along with the promotion of the national double-carbon policy, the requirement on clean energy is gradually increased, wind power generation is one of the most mature technology in the renewable energy field, the most large-scale development condition and the commercial development prospect, the offshore booster station and the onshore centralized control center are the heart of offshore wind power, and the comprehensive automatic monitoring system of the electric energy collection center and the power station is the key of the success and failure of the whole offshore wind farm. The offshore wind farm is unattended, but the internal electronic equipment is complex and various, the heat productivity is concentrated and large, the temperature and humidity environment control is particularly critical, and a necessary dehumidification cooling system needs to be developed to ensure the normal operation of all the electronic equipment.
At present, in order to prevent the infiltration of humid air at sea and influence the service life and stability of related equipment, a large amount of fresh air is introduced to perform salt mist removal and heat-humidity treatment, so that the indoor pressure of each room is ensured to be kept in an environment larger than micro positive pressure. In the prior art, dispersion equipment such as a wind cooling type heat dissipation air conditioner or a dehumidifier is mostly adopted, the environmental advantages of an offshore wind power natural cold source are not fully utilized, the energy consumption of the system is high, the cost is high, meanwhile, the outdoor unit of the air conditioner is in an outdoor salt spray corrosion environment for a long time, the service life is short, the equipment maintenance cost is high, and the reliability is greatly reduced.
Therefore, according to the current development situation of offshore wind power, a natural cooling system utilizing seawater for temperature and humidity control is developed mainly in the high-temperature, high-humidity, high-salt mist and cold and humid environments in winter in the seaside environment so as to ensure the normal operation and safe operation of equipment of a centralized control center.
Disclosure of Invention
The utility model aims to overcome at least one defect (deficiency) of the prior art, and provides a heating ventilation air conditioning system naturally cooled by utilizing seawater, wherein purified seawater is used as a natural cold source, so that the energy consumption of the system is effectively reduced.
The utility model adopts the technical scheme that the heating ventilation air conditioning system naturally cooled by utilizing seawater comprises an indirect heat exchange module, an integrated cold station module, an air treatment module and a fresh air module;
the indirect heat exchange module uses the purified seawater as a natural cold source to exchange heat with the integrated cold station module and the fresh air module; the air treatment module exchanges heat with the integrated cold station module.
The air conditioning system provided by the utility model is mainly used in a centralized control center of an offshore wind farm, wherein the indirect heat exchange module reasonably utilizes seawater as a natural cold source, is very suitable for being used as the natural cold source due to low common temperature of the seawater, and has an effective energy-saving effect by utilizing natural cooling. The natural cold source of sea water is used for indirect heat exchange, so that the mechanical refrigeration power consumption is reduced.
Further, the fresh air module comprises a fresh air processing device, a precooling coil pipe and a first fan which are sequentially arranged in a fresh air duct, and the fresh air processing device is used for processing outdoor air to generate fresh air and sending the fresh air into a room;
the precooling coil pipe exchanges heat with the indirect heat exchange module through the first water valve and is used for cooling fresh air fed into the room.
The fresh air module can realize ventilation between indoor air and outdoor air, when the temperature of the outdoor air is higher, the fresh air is required to be cooled before being fed into the room through the fresh air module, the precooling coil pipe and the indirect heat exchange module are subjected to heat exchange, the low temperature of seawater is effectively utilized for natural cooling, the fresh air is independently treated, the natural cold source of the seawater is utilized for indirect heat exchange, and mechanical refrigeration power consumption is reduced.
Further, the fresh air module further comprises a dehumidifying evaporator, a first compressor, an air-cooled condenser, a first expansion valve, a liquid reservoir, a second expansion valve, a third expansion valve and a first water-cooled condenser, wherein the dehumidifying evaporator is arranged in the fresh air duct and positioned between the precooling coil and the first fan;
the dehumidifying evaporator, the first compressor, the air-cooled condenser, the first expansion valve, the liquid storage device and the third expansion valve are sequentially connected to form an air-cooled condensing loop, and the air-cooled condenser exchanges heat with exhaust air sent indoors;
the dehumidifying evaporator, the first compressor, the first water-cooling condenser, the second expansion valve, the liquid storage device and the third expansion valve are sequentially connected to form a water-cooling condensation loop, and the first water-cooling condenser exchanges heat with the indirect heat exchange module.
When the humidity of the outdoor air is higher, the outdoor air needs to be dehumidified before being sent into a room through the fresh air module, and the dehumidifying evaporator can be used for dehumidifying through the operation of the first compressor. The first compressor can produce certain heat during operation to need take away its heat through forced air cooling condenser and first water-cooling condenser, wherein forced air cooling condenser utilizes indoor exhaust of sending to carry out the heat exchange, and first water-cooling condenser utilizes the sea water in the indirect heat exchange module to carry out the heat exchange. Because indirect heat exchange module carries out the heat exchange with a plurality of equipment, in order to alleviate its burden, fresh air module has used forced air cooling condensation and water-cooling condensation simultaneously, uses forced air cooling condensation as far as possible when the temperature of airing exhaust is low enough, and the indoor temperature of airing exhaust and sea water natural cold source of rational utilization further play the effect of saving the energy consumption.
Further, the fresh air module further comprises a reheating coil which is arranged in the fresh air duct and is positioned between the dehumidifying evaporator and the first fan, an inlet of the reheating coil is connected with the integrated cold station module, and an outlet of the reheating coil is connected with the indirect heat exchange module and is used for heating fresh air fed into a room.
When the outdoor air temperature is lower, the fresh air is required to be heated before being sent into a room through the fresh air module, and the reheating coil is connected with the integrated cold station module, and hot water is provided by the integrated cold station module. More specifically, when outdoor temperature is lower than indoor temperature, integrated cold station module provides hot water for reheat coil, makes the outdoor air form the new trend through fresh air treatment device purification treatment, and the back is dehumidified through dehumidification evaporimeter, reheat coil heating treatment, directly sends into indoor through first fan.
Further, the air treatment module comprises a return air treatment device, a surface cooling coil and a second fan which are sequentially arranged in the return air duct, and is used for treating indoor return air and then sending the treated indoor return air into the room again;
the surface cooling coil pipe exchanges heat with the integrated cold station module through the second water valve and is used for cooling air fed into the room.
The air treatment module can effectively utilize indoor return air, when the return air temperature is higher, the air treatment module needs to be cooled before being fed into the room, and the surface cooling coil pipe performs heat exchange with the integrated cold station module, so that the return air is cooled. More specifically, when outdoor temperature is higher than indoor temperature, can open the second water valve, make integrated cold station module provide cooling water for the table cold coil pipe, make indoor return air produce the air supply through return air processing apparatus's purification treatment, the cooling treatment of the table cold coil pipe of rethread, directly send into indoor when through the second fan.
Further, the air treatment module further comprises a heating coil which is arranged in the return air duct and is positioned between the surface cooling coil and the second fan, an inlet of the heating coil is connected with the integrated cold station module, and an outlet of the heating coil is connected with the indirect heat exchange module and is used for heating the indoor return air.
When the return air temperature is low, the air treatment module needs to be heated before being sent into a room, and the heating coil is connected with the integrated cold station module, so that the integrated cold station module can provide hot water. More specifically, when the second water valve is closed and the indoor return air temperature is less than the preset minimum return air temperature, the opening degree of the fourth water valve can be increased, and the flow of hot water provided by the integrated cold station module for the heating coil is increased.
Further, the integrated cold station module comprises a second compressor, a second water-cooling condenser, a fourth expansion valve and a water-cooling evaporator, and the second compressor, the second water-cooling condenser, the fourth expansion valve and the water-cooling evaporator are sequentially connected to form a refrigeration loop;
the second water-cooling condenser exchanges heat with the indirect heat exchange module, and the water-cooling evaporator exchanges heat with the surface cooling coil;
the second water-cooling condenser is connected with the reheating coil through a third water valve and is used for controlling the integrated cold station module to provide hot water for the reheating coil;
the second water-cooling condenser is connected with the heating coil pipe through a fourth water valve and used for controlling the integrated cold station module to provide hot water for the heating coil pipe.
The integrated cold station module adopts a cooling water heat recovery technology, performs heat exchange with the surface cooling coil through the water-cooling evaporator, namely provides cooling water for the surface cooling coil, and simultaneously provides hot water for the reheating coil and the heating coil through the second water-cooling condenser. The heat of the condensation end of the integrated cold station module is taken away by the indirect heat exchange module, a cooling tower is not required to be configured, meanwhile, the fresh air module and the air treatment module are subjected to backheating utilization by utilizing the higher temperature of the cooling water outlet of the host machine, the investment of electric heating or other heat sources is saved, and meanwhile, the load of the indirect heat exchange module is reduced, so that a better energy-saving effect is achieved.
Further, the fresh air processing module further comprises a first electric heater and a first humidifier which are arranged in the fresh air duct and positioned between the reheating coil and the first fan;
the air treatment module further comprises a second electric heater and a second humidifier which are arranged in the return air duct and are positioned between the heating coil and the second fan.
When the integrated cold station module can not provide enough hot water for the heating coil and the reheating coil, namely the heating coil and the reheating coil can not meet the heating treatment of fresh air and exhaust air, the first electric heater and the second electric heater are utilized for heating treatment, and the temperature requirements of the fresh air and the exhaust air are met. When the indoor air conditioner is specifically applied, the third water valve can be closed, the first electric heater positioned between the reheating coil and the first fan can be started, so that outdoor air is purified by the fresh air treatment device to form fresh air, and then the fresh air is directly sent into the indoor through the first fan after being dehumidified by the dehumidification evaporator and heated by the first electric heater; the other specific application can be to turn off the fourth water valve and turn on the second electric heater between the heating coil and the second fan, so that the indoor return air is purified by the return air treatment device to generate air supply, and then is directly sent into the room through the second fan after the cooling treatment of the surface cooling coil and the heating treatment of the second electric heater.
Further, the indirect heat exchange module comprises a plate heat exchanger, a first water pump, a check valve, a seawater treatment device and a seawater pipeline, wherein the plate heat exchanger exchanges heat with the integrated refrigeration station module and the fresh air module;
the inlet of the plate heat exchanger is sequentially connected with the first water pump, the check valve and the seawater treatment device, and the outlet of the plate heat exchanger is connected with a seawater pipeline.
More specifically, the seawater treatment device comprises a dirt remover, an electronic water treatment instrument and a Y-shaped filter which are connected in sequence and is used for treating seawater and providing clean seawater for the plate heat exchanger as a natural cold source so as to avoid corroding equipment and pipelines.
Further, the fresh air treatment device comprises an air valve, a rainproof shutter, a gas-water separator, a salt mist primary filter and a salt mist middle-effect filter which are sequentially arranged in the fresh air duct.
The fresh air module is provided with a gas-water separator for separating liquid in air, and a salt fog filter is arranged for filtering salt fog in the air, so that air purification is mainly carried out on the air with high humidity and high salt fog in the seaside environment.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, seawater is used as a natural cold source, and natural cooling is utilized to reduce mechanical refrigeration power consumption, so that an effective energy-saving effect is achieved;
(2) The fresh air is adopted for concentrated salt fog treatment, so that the corrosion influence of the salt fog environment at the sea on equipment is reduced;
(3) The fresh air module of the utility model utilizes air cooling condensation and water cooling condensation at the same time, reasonably utilizes the indoor exhaust temperature and the natural cold source of seawater, and further plays the role of saving energy consumption;
(4) The heat of the condensing end of the integrated cold station module is taken away by the indirect heat exchange module, a cooling tower is not needed to be configured, meanwhile, the fresh air module and the air treatment module are subjected to backheating utilization by utilizing the higher temperature of the cooling water outlet of the main machine, the investment of electric heating or other heat sources is saved, and meanwhile, the load of the indirect heat exchanger is reduced, so that a better energy-saving effect is achieved.
Drawings
Fig. 1 is a structural diagram of the present utility model.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the utility model. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, the embodiment provides a heating ventilation and air conditioning system naturally cooled by utilizing seawater, which comprises an indirect heat exchange module, an integrated cold station module, an air treatment module and a fresh air module;
the indirect heat exchange module uses the purified seawater as a natural cold source to exchange heat with the integrated cold station module and the fresh air module; the air treatment module exchanges heat with the integrated cold station module.
The embodiment is mainly used for a centralized control center of the offshore wind farm, and is used for controlling the air cleanliness, the ambient temperature and the humidity in the centralized control center and reducing the corrosion of the salt fog environment at the sea to equipment. Because the common temperature of the seawater is low, the seawater is reasonably utilized as a natural cold source, and the natural cooling is used for reducing the mechanical refrigeration power consumption, thereby playing an effective energy-saving effect.
The fresh air module in this embodiment includes a fresh air processing device, a pre-cooling coil 6 and a first fan 10, which are sequentially installed in a fresh air duct, and are used for processing outdoor air to generate fresh air and sending the fresh air into a room; the precooling coil 6 exchanges heat with the indirect heat exchange module through the first water valve 57 and is used for cooling fresh air fed into the room.
In the actual use process, the fresh air treatment device can include the blast gate 1, rain-proof tripe 2, maze gas-water separator 3, salt fog preliminary effect filter 4, salt fog intermediate effect filter 5 that connect gradually for handle the high humidity high salt fog's in the seaside environment air, precooling coil 6 carries out cooling treatment to the new trend after purifying, and the rethread first fan 10 sends the new trend indoor, realizes circulation, the ventilation between indoor air and the outdoor air.
In the specific implementation process, the fresh air treatment device can increase or decrease part of components according to actual needs, and aims to purify sea wind and then obtain fresh air to be conveyed indoors. The air valve 1 is mainly used for opening or closing sea wind transportation, the rain-proof shutter 2 is mainly used for easily entering rainwater after the air valve 1 is opened in rainy days and other weather, the purpose of blocking the rainwater is achieved, and other parts with the same function can be adopted for realizing the rain-proof shutter in practical application. Although the rain-proof shutter 2 is arranged, the water can not be blocked in the practical application, and for this purpose, the labyrinth air-water separator 3 is also arranged in the fresh air treatment device for removing the moisture in the fresh air. Furthermore, as the sea wind also contains a certain amount of salt, the salt can corrode equipment and pipelines, the utility model also provides two stages of salt fog filters, namely a salt fog primary filter 4 and a salt fog middle-effect filter 5, which are used for filtering the sea wind entering the fresh air treatment device.
The fresh air module further comprises a dehumidifying evaporator 7, a first compressor 11, an air-cooled condenser 12, a first expansion valve 13, a liquid reservoir 16, a second expansion valve 15, a third expansion valve 17 and a first water-cooled condenser 14, and is used for cooling and dehumidifying fresh air fed into a room, wherein the dehumidifying evaporator is arranged in a fresh air duct and is positioned between the precooling coil 6 and the first fan 10;
the dehumidification evaporator 7, the first compressor 11, the air-cooled condenser 12, the first expansion valve 13, the liquid storage 16 and the third expansion valve 17 are sequentially connected to form an air-cooled condensation loop, and the air-cooled condenser 12 exchanges heat with exhaust air sent indoors;
the dehumidification evaporator 7, the first compressor 11, the first water-cooling condenser 15, the second expansion valve 14, the liquid reservoir 16 and the third expansion valve 17 are sequentially connected to form a water-cooling condensation loop, and the first water-cooling condenser 15 exchanges heat with the indirect heat exchange module.
In this embodiment, the dehumidifying evaporator 7 is configured with a water-cooling condensing circuit and an air-cooling condensing circuit, and can be switched according to actual needs in the actual use process.
In the actual use process, as the humidity of the environment at sea is higher, the fresh air module dehumidifies fresh air by adopting the dehumidifying evaporator 7, and dehumidifies the fresh air by using the first compressor 11, and certain heat is generated when the first compressor 11 works, so that the heat of the fresh air needs to be taken away by the air-cooled condenser 12 or the first water-cooled condenser 15, wherein the air-cooled condenser 12 performs heat exchange by utilizing the exhaust air sent indoors, and the first water-cooled condenser 15 performs heat exchange by utilizing the seawater in the indirect heat exchange module. Because the indirect heat exchange module performs heat exchange with a plurality of devices, in order to lighten the burden of the indirect heat exchange module, the fresh air module is simultaneously provided with air-cooled condensation and water-cooled condensation, and when the exhaust temperature is low enough, the air-cooled condensation is used as much as possible, the indoor exhaust temperature and the natural cold source of seawater are reasonably utilized, and the effect of saving energy consumption is further achieved.
The new trend module of this embodiment is still including locating in the new trend wind channel and being located the reheat coil 8 between dehumidification evaporimeter 7 and the first fan 10, reheat coil 8 entry is connected with integrated cold station module, and the export is connected with indirect heat exchange module for to sending into indoor new trend and carrying out heating treatment. When the outdoor temperature is lower, the fresh air module uses the reheating coil 8 to heat the fresh air, and hot water of the reheating coil 8 is provided by the integrated cold station module.
The fresh air processing module in this embodiment further includes a first electric heater 63 and a first humidifier 9 disposed in the fresh air duct and located between the reheat coil 8 and the first fan 10. When the temperature after the heating treatment by using the reheating coil 8 is still low, the first electric heater 9 is started to heat the fresh air. When the outdoor humidity is low, the first humidifier 9 is started to humidify the fresh air.
The air treatment module in this embodiment includes a return air treatment device, a surface cooling coil 42 and a second fan 46 sequentially arranged in the return air duct, and is used for treating indoor return air and then sending the treated indoor return air into the room again;
the surface cooling coil exchanges heat with the integrated cold station module through the second water valve 34 and is used for cooling the air fed into the room.
In the actual use process, the return air treatment device comprises a return air valve 40, a primary filter 41 and a water baffle 43, and is used for further purifying the indoor return air. The indoor return air is sent into the air treatment module through the return air valve 40, is purified by the primary filter 41 to form air supply, is subjected to cooling treatment by the surface cooling coil 42, is isolated from water vapor in the air by the water baffle 43, and is finally sent into the room through the second fan 46.
The air treatment module in this embodiment further includes a heating coil 44 disposed in the return air duct and located between the surface cooling coil 42 and the second fan 46, where an inlet of the heating coil 44 is connected to the integrated cooling station module, and an outlet is connected to the indirect heat exchange module, for heating the indoor return air. When the return air temperature is low, it is heat treated by the heating coil 44, and the hot water of the heating coil 44 is provided by the integrated cold station module.
The air treatment module of this embodiment also includes a second electric heater 62 and a second humidifier 45 disposed in the return air duct between the heating coil 44 and the second fan 46. When the return air temperature after the heating treatment by the heating coil 44 is still low, the second electric heater 62 is turned on to heat the fresh air. When the return air humidity is low, the second humidifier 45 is started to humidify the fresh air.
The integrated cold station module in this embodiment includes a second compressor 18, a second water-cooled condenser 19, a fourth expansion valve 20, and a water-cooled evaporator 21, where the second compressor 18, the second water-cooled condenser 19, the fourth expansion valve 20, and the water-cooled evaporator 21 are sequentially connected to form a refrigeration circuit; the second water-cooled condenser 19 exchanges heat with the indirect heat exchange module, and the water-cooled evaporator 21 exchanges heat with the surface cooling coil 42; the second water-cooling condenser 19 is connected with the reheating coil 8 through a third water valve 59 and is used for controlling the integrated cold station module to provide hot water for the reheating coil 8; the second water cooled condenser 19 is connected to the heating coil 44 through a fourth water valve 60 for controlling the integrated cold station module to provide hot water to the heating coil 44.
The integrated cold station module in this embodiment further includes an expansion tank 22, a fifth water valve 23, a first water filter 24, a first pressure gauge 26, a second water pump 24, a second pressure gauge 25, and a water inlet branch formed by a first check valve 28, where an inlet of the water inlet branch is connected to the indirect heat exchange module, and an outlet is connected to the second water-cooled condenser 19; and a water outlet branch consisting of a third pressure gauge 29, a second one-way valve 30, a differential pressure balance valve 31 and a third one-way valve 32, wherein the inlet of the water outlet branch is connected with the second water-cooled condenser 19, and the outlet of the water outlet branch is connected with the indirect heat exchange module. The integrated cold station module exchanges heat with the indirect heat exchange module through the water inlet branch and the water outlet branch.
The integrated cold station module in this embodiment further includes a water supply branch formed by a fourth pressure gauge 33 and a sixth water valve 34, where an inlet of the water supply branch is connected to the air treatment module, and an outlet of the water supply branch is connected to the water-cooled evaporator 21; and a water return branch composed of a second water filter 35, a third pressure gauge 36, a third water pump 37, a fourth pressure gauge 38 and a fourth one-way valve 39, wherein the inlet of the water return branch is connected with the water-cooling evaporator 21, and the outlet of the water return branch is connected with the air treatment module. The integrated cold station module exchanges heat with the air treatment module through the water supply branch and the water return branch.
The indirect heat exchange module in the embodiment comprises a plate heat exchanger 52, a first water pump 47, a check valve 48, a seawater treatment device and a seawater pipeline, wherein the plate heat exchanger 52 exchanges heat with the integrated refrigeration station module and the fresh air module;
the plate heat exchanger has its inlet connected to the first water pump 47, the check valve 48, the sea water treating apparatus and its outlet connected to the sea water pipeline.
In the actual use process, the seawater treatment device comprises a dirt remover 49, an electronic water treatment instrument 50 and a Y-shaped filter 51 which are connected in sequence, and is used for treating seawater and providing clean seawater as a natural cold source for the plate heat exchanger 52 so as to avoid corroding equipment and pipelines. Seawater enters from an inlet through a first water pump 47, sequentially passes through a check valve 48, a dirt remover 49, an electronic water treatment instrument 50 and a Y-shaped filter 51 and flows to a plate heat exchanger 52.
In the actual use process, when the outdoor temperature is higher than the indoor temperature, the system is in a summer mode, the integrated cold station module enters a working mode to provide cooling water for the air treatment module, specifically, the second compressor 18 in the integrated cold station module works to perform compression refrigeration, and the water cooling evaporator 21 is used for providing cooling water for the air treatment module; the fresh air module enters a working mode, a third water valve 59 is closed, a first water valve 57 is opened, a precooling coil pipe 6 and a plate heat exchanger 52 of the indirect heat exchange module are subjected to heat exchange, a wind valve 1, a rainproof louver 2, a labyrinth gas-water separator 3, a salt mist primary filter 4 and a salt mist middle-effect filter 5 in a fresh air treatment device are opened, sea air enters from the wind valve 1 and then is subjected to a series of purification treatments such as the rainproof louver 1, the labyrinth gas-water separator 3, the salt mist primary filter 4 and the salt mist middle-effect filter 5, and then is subjected to cooling treatment by the precooling coil pipe 6 and dehumidification treatment by a dehumidifying evaporator 7, and then is directly sent into a room through a first fan 10. When the device is particularly used, indoor air can be exhausted out of the room through exhaust air and can also be conveyed into the return air treatment device; the air treatment module enters a working mode, the fourth water valve 60 is closed, the second water valve 34 is opened, the water-cooled evaporator 21 of the integrated cold station module supplies cooling water to the surface cooling coil 42, the return air valve 40, the primary filter 41 and the water baffle 43 in the return air treatment device are opened, the indoor return air is subjected to a series of purification treatment such as the return air valve 40, the primary filter 41 and the water baffle 43 to generate air supply, and then the air supply is subjected to cooling treatment of the surface cooling coil 42 and is directly fed into a room through the second fan 46.
When the outdoor temperature is lower than the indoor temperature, the system is in a winter mode, the integrated cold station module enters a working mode, cooling water is provided for the air treatment module, hot water is provided for the fresh air module and/or the air treatment module, specifically, the second compressor 18 in the integrated cold station module works for compression refrigeration, cooling water is provided for the air treatment module through the water-cooling evaporator 21, and hot water is provided for the fresh air module and/or the air treatment module through the second water-cooling condenser 19; the fresh air module enters a working mode, the first water valve 57 is closed, the third water valve 59 is opened, the second water-cooling condenser 19 of the integrated cold station module supplies hot water to the reheating coil 8, the air valve 1, the rainproof louver 2, the labyrinth gas-water separator 3, the salt mist primary filter 4 and the salt mist middle-effect filter 5 in the fresh air treatment device are opened, and after sea air enters from the air valve 1, sea air is subjected to a series of purification treatments such as the rainproof louver 1, the labyrinth gas-water separator 3, the salt mist primary filter 4 and the salt mist middle-effect filter 5, and then is subjected to dehumidification treatment by the dehumidification evaporator 7 and heating treatment by the reheating coil 8, and then is directly sent into a room through the first fan 10. When the device is particularly used, indoor air can be exhausted out of the room through exhaust air and can also be conveyed into the return air treatment device; the air treatment module enters a working mode, a fourth water valve 60 is opened, a second water valve 34 is opened, the water-cooled evaporator 21 of the integrated cold station module supplies cooling water to the surface cooling coil 42, the second water-cooled condenser 19 supplies hot water to the heating coil 44, a return air valve 40, a primary filter 41 and a water baffle 43 in the return air treatment device are opened, the indoor return air is subjected to a series of purification treatments such as the return air valve 40, the primary filter 41 and the water baffle 43 to generate air supply, and the air supply is directly fed into the room through a second fan 46 after the cooling treatment of the surface cooling coil 42 and the heating treatment of the heating coil 44.
The embodiment also comprises an energy-saving monitoring module which is used for regulating and controlling the indirect heat exchange module, the integrated cold station module, the air treatment module and the fresh air module.
It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and are not intended to limit the present utility model to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present utility model should be included in the protection scope of the claims of the present utility model.
Claims (10)
1. The heating ventilation air conditioning system naturally cooled by utilizing seawater is characterized by comprising an indirect heat exchange module, an integrated cold station module, an air treatment module and a fresh air module;
the indirect heat exchange module uses the purified seawater as a natural cold source to exchange heat with the integrated cold station module and the fresh air module; the air treatment module exchanges heat with the integrated cold station module.
2. The heating ventilation air conditioning system naturally cooled by utilizing seawater according to claim 1, wherein the fresh air module comprises a fresh air processing device, a precooling coil and a first fan which are sequentially arranged in a fresh air duct, and the fresh air processing device is used for processing outdoor air to generate fresh air and sending the fresh air into a room;
the precooling coil pipe exchanges heat with the indirect heat exchange module through the first water valve and is used for cooling fresh air fed into the room.
3. The system of claim 2, wherein the fresh air module further comprises a dehumidifying evaporator, a first compressor, an air-cooled condenser, a first expansion valve, a liquid reservoir, a second expansion valve, a third expansion valve, and a first water-cooled condenser, for cooling and dehumidifying fresh air fed into the room, wherein the dehumidifying evaporator is disposed in the fresh air duct and between the pre-cooling coil and the first fan;
the dehumidifying evaporator, the first compressor, the air-cooled condenser, the first expansion valve, the liquid storage device and the third expansion valve are sequentially connected to form an air-cooled condensing loop, and the air-cooled condenser exchanges heat with exhaust air sent indoors;
the dehumidifying evaporator, the first compressor, the first water-cooling condenser, the second expansion valve, the liquid storage device and the third expansion valve are sequentially connected to form a water-cooling condensation loop, and the first water-cooling condenser exchanges heat with the indirect heat exchange module.
4. A heating ventilation air conditioning system utilizing natural cooling of seawater according to claim 3, wherein the fresh air module further comprises a reheat coil arranged in the fresh air duct and positioned between the dehumidification evaporator and the first fan, the reheat coil inlet is connected with the integrated cold station module, and the outlet is connected with the indirect heat exchange module for heating treatment of fresh air fed into the room.
5. The natural cooling hvac system of claim 4 wherein the air treatment module comprises a return air treatment device, a surface cooling coil and a second fan sequentially disposed in the return air duct for treating the return air in the room and then re-delivering the treated return air into the room;
the surface cooling coil pipe exchanges heat with the integrated cold station module through the second water valve and is used for cooling air fed into the room.
6. A natural cooling hvac system utilizing seawater as recited in claim 5 wherein the air handling module further comprises a heating coil disposed in the return air duct and between the surface cooling coil and the second fan, the heating coil having an inlet connected to the integrated cold station module and an outlet connected to the indirect heat exchange module for heat treating the indoor return air.
7. The hvac system of claim 6, wherein the integrated chiller station module comprises a second compressor, a second water-cooled condenser, a fourth expansion valve, and a water-cooled evaporator, which are sequentially connected to form a refrigeration circuit;
the second water-cooling condenser exchanges heat with the indirect heat exchange module, and the water-cooling evaporator exchanges heat with the surface cooling coil;
the second water-cooling condenser is connected with the reheating coil through a third water valve and is used for controlling the integrated cold station module to provide hot water for the reheating coil;
the second water-cooling condenser is connected with the heating coil pipe through a fourth water valve and used for controlling the integrated cold station module to provide hot water for the heating coil pipe.
8. The hvac system of claim 6, wherein the fresh air handling module further comprises a first electric heater and a first humidifier disposed in the fresh air duct and between the reheat coil and the first fan;
the air treatment module further comprises a second electric heater and a second humidifier which are arranged in the return air duct and are positioned between the heating coil and the second fan.
9. A heating, ventilation and air conditioning system naturally cooled by seawater according to any of claims 1 to 8, wherein the indirect heat exchange module comprises a plate heat exchanger, a first water pump, a check valve, a seawater treatment device and a seawater pipeline, and the plate heat exchanger exchanges heat with an integrated refrigeration station module and a fresh air module;
the inlet of the plate heat exchanger is sequentially connected with the first water pump, the check valve and the seawater treatment device, and the outlet of the plate heat exchanger is connected with a seawater pipeline.
10. The heating, ventilation and air conditioning system utilizing natural cooling of seawater according to any one of claims 2-8, wherein the fresh air treatment device comprises an air valve, a rainproof shutter, a gas-water separator, a salt mist primary filter and a salt mist middle-effect filter which are sequentially arranged in a fresh air duct.
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| CN115950010A (en) * | 2022-12-30 | 2023-04-11 | 广东申菱环境系统股份有限公司 | Fresh air conditioning system utilizing seawater indirect heat exchange and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115950010A (en) * | 2022-12-30 | 2023-04-11 | 广东申菱环境系统股份有限公司 | Fresh air conditioning system utilizing seawater indirect heat exchange and control method thereof |
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