JP2015042908A - Outdoor unit system and air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit system and an air conditioning system that have improved energy consumption efficiency.SOLUTION: Outdoor unit systems 100 and 200 each includes: one or a plurality of air conditioning device outdoor units 112; and a gas temperature adjusting device 116 that adjusts the temperature of gas that exchanges heat with a heat medium in the outdoor units 112. The outdoor unit system 100 can include a housing chamber 114 that houses the one or the plurality of air conditioning device outdoor units. The outdoor unit system 200 can include a guide passage 220 that guides the gas whose temperature was adjusted by the gas temperature adjusting device 116 toward an outdoor unit suction part 112a that sucks the gas that exchanges heat with the heat medium.

Description

  The present invention relates to an outdoor unit system including an outdoor unit of an air conditioner and an air conditioning system.

  Generally, in an air conditioning system, a heat medium is circulated between an indoor unit and an outdoor unit, and heat is exchanged between the outside air and the heat medium in the outdoor unit (Patent Document 1).

Japanese Patent Laid-Open No. 60-147078

  An object of the present invention is to provide an outdoor unit system and an air conditioning system with improved energy consumption efficiency.

1. Outdoor unit system Outdoor unit system according to the present invention,
One or more air conditioner outdoor units;
A gas temperature adjusting device that adjusts the temperature of the gas that exchanges heat with the heat medium in the outdoor unit.

  According to the present invention, the gas whose temperature is adjusted by the gas temperature adjusting device is taken into the outdoor unit and exchanges heat with the heat medium. For this reason, by controlling the temperature of the gas in the storage chamber, it is possible to achieve a temperature at which the average energy consumption efficiency of the air conditioning is increased, and the energy saving effect of the air conditioning system can be enhanced.

  In the present invention, an accommodation room for accommodating the outdoor unit of the one or more air conditioners can be included.

  According to the present invention, the outdoor unit is accommodated in the accommodation chamber, and the temperature of the gas in the accommodation chamber can be controlled by the gas temperature adjusting device. For this reason, an outdoor unit takes in the gas by which the temperature in the accommodation room was controlled, and does not take in outside air directly. Therefore, by controlling the temperature of the gas in the accommodation chamber, it is possible to achieve a temperature at which the average energy consumption efficiency of air conditioning is increased, and the energy saving effect of the air conditioning system can be enhanced.

  Moreover, since excessively high and low temperatures of waste heat from the outdoor unit can be avoided, it also serves as a countermeasure against heat island in summer. In addition, defrosting in winter can be avoided.

  In the present invention, it is possible to include a guide path that guides the gas whose temperature is adjusted by the gas temperature adjusting device toward the suction portion of the outdoor unit that sucks the gas that exchanges heat with the heat medium.

  According to this invention, the guide path which guides the gas temperature-adjusted with the gas temperature adjusting device toward an outdoor unit is provided. Since the temperature of the gas for heat exchange is adjusted and the gas is supplied toward the outdoor unit, the temperature of the gas entering from the suction portion of the outdoor unit can be controlled by the gas temperature adjusting device. For this reason, the outdoor unit takes in the gas whose temperature is controlled by the gas temperature adjusting device. Therefore, by controlling the temperature of the gas supplied to the outdoor unit by the gas temperature adjusting device, the temperature can be set to a temperature at which the average energy consumption efficiency of air conditioning is increased, and the energy saving effect of the air conditioning system can be enhanced.

  Moreover, since excessively high and low temperatures of waste heat from the outdoor unit can be avoided, it also serves as a countermeasure against heat island in summer. In addition, defrosting in winter can be avoided.

  In the present invention, the gas temperature adjusting device can be driven by a power source derived from renewable energy. Thereby, energy saving can be achieved more.

  In the present invention, the gas temperature adjusting device may be a heat exchanger for exchanging heat between groundwater and the gas in the storage chamber. Thereby, energy saving can be achieved more.

In the present invention, the gas temperature adjusting device is
A gas-liquid contact chamber for exchanging heat between gas and liquid;
A liquid inlet for introducing liquid into the gas-liquid contact chamber;
A liquid outlet for extracting liquid in the gas-liquid contact chamber;
A gas inlet for introducing gas into the gas-liquid contact chamber;
A gas outlet for deriving gas in the gas-liquid contact chamber;
Pressure control means for controlling the pressure of the gas in the gas-liquid contact chamber, or the pressure of the gas introduced into the gas-liquid contact chamber,
The pressure control means performs gas pressure control without using a compressor, and includes a blower.

  In the present invention, the pressure control means controls the pressure of the gas without using a compressor and includes a blower, whereby a gas temperature adjusting device with improved energy saving performance can be realized.

In the present invention, the blower may have a discharge pressure of 0.1 to 2.0 kgf / cm ² .

  In the present invention, the blower can pressurize the gas before introducing the gas into the gas-liquid contact chamber. Thereby, when the gas in a gas-liquid contact chamber will be in a pressurized state and the gas derived | led-out from the gas-liquid contact chamber will be discharged | emitted outside, in order to expand adiabatically, the temperature of gas can be reduced. .

  In the present invention, the blower can suck the gas in the gas-liquid contact chamber. Thereby, since the pressure in the gas-liquid contact chamber becomes a negative pressure state, the gas expands adiabatically, the temperature decreases, and the saturated water vapor amount decreases. For this reason, a part of the water vapor contained in the gas becomes liquid water, latent heat is generated, and the latent heat energy is taken into the gas. Moreover, since the pressure of the gas is in a negative pressure state, when the gas is released to the outside, the pressure is adiabatically increased, so that the temperature is increased accordingly.

  In this invention, the said blower is connected to the said gas inlet and the said gas outlet, A 1st opening-and-closing part is provided between the said gas inlet and the said air blower, The said gas outlet and the said air blower A second opening / closing part may be provided between the two. Thereby, the blower can be switched between the upstream side and the downstream side of the gas-liquid contact chamber by switching the opening / closing part.

It is a figure which shows typically a 1st air conditioning system and an outdoor unit system. It is a figure which shows a 2nd air conditioning system and an outdoor unit system typically. It is a figure which shows a gas-liquid contact apparatus typically. It is explanatory drawing of the gas-liquid contact apparatus at the time of air_conditionaing | cooling operation. It is explanatory drawing of the gas-liquid contact apparatus at the time of heating operation.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1. First air conditioning system and first outdoor unit system As an example of an air conditioning system and an outdoor unit system, a first air conditioning system and a first outdoor unit system will be described.

  The first air conditioning system 100 includes an indoor unit 120 in the air conditioning room 122 and an outdoor unit system 110. The first outdoor unit system 110 includes an outdoor unit 112 for one or more air conditioners, a storage chamber 114 for storing the outdoor unit 112 for one or more air conditioners, and a gas temperature adjusting device 116.

  A heat medium circulates between the indoor unit 120 and the outdoor unit 112. The indoor unit 120 and the outdoor unit 112 are not particularly limited, and a known indoor unit and outdoor unit of an air conditioner can be applied.

  In the indoor unit 120, heat exchange is performed between the heat medium and the gas in the air conditioning chamber 122 where the indoor unit 120 is located. In the outdoor unit 112, heat exchange is performed between the heat medium and the gas in the storage chamber 114.

  The gas temperature adjusting device 116 adjusts the temperature of the gas that exchanges heat with the heat medium in the outdoor unit 112. In the first air conditioning system and the first outdoor unit system, the gas temperature adjusting device 116 specifically cools or warms the temperature of the gas in the storage chamber 114. The gas temperature adjusting device 116 is not particularly limited as long as the gas temperature can be adjusted, but a gas-liquid contact device using groundwater described later, an air conditioner driven by a power source derived from renewable energy, Or it is preferable that it is an air conditioner using heat sources, such as solar heat, geothermal heat, exhaust heat, and groundwater heat. As an air conditioner driven by a power source derived from renewable energy, a known air conditioner using a power source derived from renewable energy as a drive source can be applied. Examples of the power source derived from renewable energy include a power source using renewable energy such as solar energy, wind energy, and geothermal energy.

  The accommodation room 114 may be a building or a sheet-like house such as a plastic house, and the outdoor unit 112 only needs to be covered. The accommodation chamber 114 may be provided with a vent (not shown) that can be opened and closed as necessary. You may provide the temperature measuring device (not shown) for measuring the temperature of the gas in the storage chamber 114. FIG. The storage chamber 114 can be made of a known heat insulating material. The accommodation chamber 114 may be sealed or may be partially opened by an opening.

  Hereinafter, the operation and effect of the first outdoor unit system 110 and the first air conditioning system 100 will be described.

  In the first outdoor unit system 110 and the first air conditioning system 100, the outdoor unit 112 is in the storage chamber 114, and a gas temperature adjusting device 116 that adjusts the temperature of the gas in the storage chamber 114 is provided. . Since the outdoor unit 112 is in the storage chamber 114, the outdoor unit 112 is heat-exchanged between the gas in the storage chamber 114 and the heat medium. When the air conditioning system is in a cooling operation, if the temperature of the outside air that exchanges heat with the heat medium in the outdoor unit is high, the cooling and heating average energy consumption efficiency (COP) decreases. On the other hand, in the heating operation, if the temperature of the outside air that exchanges heat with the heat medium in the outdoor unit 112 is low, the cooling and heating average energy consumption efficiency (COP) is low.

  In the first outdoor unit system 110 and the first air conditioning system 100, the outdoor unit 112 is stored in the storage chamber 114, and the gas temperature adjusting device 116 can control the temperature of the gas in the storage chamber 114. it can. For this reason, the outdoor unit 112 takes in the gas whose temperature in the storage chamber 114 is controlled, and does not take in the outside air directly. Therefore, by controlling the temperature of the gas in the storage chamber 114, the temperature of the air conditioning system 100 can be increased, and the energy saving effect of the air conditioning system 100 can be enhanced.

  Moreover, since excessively high temperature and low temperature of the waste heat from the outdoor unit 112 can be avoided, it becomes a countermeasure against heat island in summer. In addition, defrosting in winter can be avoided.

2. 2nd air conditioning system and outdoor unit system As an example of an air conditioning system and an outdoor unit system, the 1st air conditioning system and the 1st outdoor unit system are explained.

  The second air conditioning system 200 and the second outdoor unit system 210 provide a guide path that guides the gas whose temperature is adjusted by the gas temperature adjusting device 116 toward the gas suction part 112a of the outdoor unit 112 without providing a storage chamber. Unlike the first air conditioning system 100 and the outdoor unit system 110, the other points are basically the same in that 220 is provided.

  In the second air conditioning system and the second outdoor unit system, the gas whose temperature is adjusted by the gas temperature adjusting device is supplied to the gas suction unit of the outdoor unit (suction unit of the outdoor unit that sucks the gas that exchanges heat with the heat medium) 112a. You may provide the air blower (fan etc.) 230 for sending toward. The guide path can be configured by, for example, a duct or a cylindrical one.

  In the second air conditioning system 200 and the second outdoor unit system 210, a guide path 220 that guides the gas whose temperature is adjusted by the gas temperature adjusting device 116 toward the outdoor unit 112 is provided. Since the temperature of the gas for heat exchange is adjusted and the gas is supplied toward the outdoor unit 112, the temperature of the gas entering from the gas suction part 112a of the outdoor unit 112 is controlled by the gas temperature adjusting device 116. can do. For this reason, the outdoor unit 112 takes in the gas whose temperature is controlled by the gas temperature adjusting device 116. Therefore, by controlling the temperature of the gas supplied to the outdoor unit 112 by the gas temperature adjusting device 116, it is possible to achieve a temperature at which the average energy consumption efficiency of air conditioning is increased, and the energy saving effect of the air conditioning system 100 can be enhanced.

  Further, since excessively high and low temperatures of waste heat from the outdoor unit 112 can be avoided, it is also a countermeasure against heat island in summer. In addition, defrosting in winter can be avoided.

2. Temperature Adjustment Device (1) Configuration Next, a suitable temperature adjustment device will be described. Taking the gas-liquid contact device 10 as an example of the temperature adjusting device, the temperature adjusting device will be described.

  The gas-liquid contact device 10 can function as a cooling or heating device. The gas-liquid contact device 10 includes a gas-liquid contact chamber 20 for performing heat exchange between gas and liquid, a liquid inlet 30 for introducing liquid into the gas-liquid contact chamber 20, and a gas-liquid contact chamber. A liquid outlet 32 for leading out the liquid in the gas 20, a gas inlet 40 for introducing the gas into the gas-liquid contact chamber 20, and a gas outlet for leading out the gas in the gas-liquid contact chamber 20. 42 and pressure control means 50 for controlling the pressure of the gas in the gas-liquid contact chamber 20.

  The gas-liquid contact chamber 20 can be constituted by, for example, a direct gas-liquid contact tower. A filler 22 such as Raschig ring may be provided in the gas-liquid contact chamber 20. A pressure gauge 24 for measuring the pressure in the gas-liquid contact chamber 20 can be provided.

The pressure control means 50 performs pressure control without using a compressor, and is configured by a blower B1. Blower B1 is about twice the discharge pressure, for example atmospheric pressure, specifically, 0.1~2.0kgf / cm ^2, preferably 0.1~1.5kgf / cm ^2, more preferably 0.1 It can be 1.0 kgf / cm ² . The blower B <b> 1 has at least one of a function of pressurizing a gas before introducing the gas into the gas-liquid contact chamber 20 and a function of sucking the gas in the gas-liquid contact chamber 20. The blower B1 may be a turbo blower having a turbo function.

  The gas-liquid contact device 10 includes first to fifth pipelines 70a to 70e and first to seventh opening / closing devices 60a to 60g. The first to fifth pipelines 70a to 70e are pipelines through which gas passes, and publicly known tubes can be applied. The first to seventh opening / closing devices 60a to 60g are constituted by, for example, opening / closing valves and the like, and allow gas or liquid to pass when opened, and prevent gas or liquid from passing when closed.

  One end of the first conduit 70 a is connected to the gas inlet 40 of the gas-liquid contact chamber 20. One end of the second pipe line is connected to the gas outlet port 42 of the gas-liquid contact chamber 20.

  The third pipeline 70c connects the first pipeline 70a and the second pipeline 70b. A blower B1 is provided in the third pipeline 70c. A first opening / closing device 60a is provided in the middle of the third pipeline 70c between the blower B1 and the first pipeline 70a. A second opening / closing device 60b is provided in the middle of the third pipeline 70c between the blower B1 and the second pipeline 70b. In the 1st pipe line 70a, the 3rd opening-and-closing apparatus 60c is provided in the opposite side to the gas-liquid contact chamber 20 on the basis of the connection location with the 3rd pipe line 70c. In the second pipeline 70b, a fourth opening / closing device 60d is provided on the opposite side of the gas-liquid contact chamber 20 with respect to the connection location with the third pipeline 70c.

  The fourth pipeline 70d is connected to the third pipeline 70c between the first pipeline 70a and the blower B1. A fifth opening / closing device 60e is provided in the fourth pipeline 70d. The fifth pipeline 70e is connected to a third pipeline 70c between the first pipeline 70a and the blower B1. The fifth pipe line 70e is provided with a sixth opening / closing device 60f.

  The gas-liquid contact chamber 20 is provided with a liquid introduction pipe 70f for introducing a liquid (for example, water, particularly groundwater). If necessary, the liquid can be introduced into the gas-liquid contact chamber by a pump. The method of introducing the liquid is not particularly limited, and for example, the liquid may be introduced in a mist form by a known spraying device from the introducing tube, or may be directly introduced from the introducing tube without going through the spraying device. In the case of direct introduction from the introduction pipe without using a spraying device, a liquid may be supplied to a filler such as Raschig ring or a multilayer contact plate to achieve gas-liquid contact. By doing in this way, the heat exchange efficiency of gas-liquid contact can be improved.

  The gas-liquid contact chamber 20 is provided with a liquid discharge pipe 70g for discharging the liquid stored below. A seventh opening / closing device 60g is provided in the liquid discharge pipe 70g.

(2) Principle of operation (a) During cooling operation During cooling operation, the first opening / closing device 60a, the fourth opening / closing device 60d and the sixth opening / closing device 60f are opened, and the second opening / closing device 60b, The third opening / closing device 60c and the fifth opening / closing device 60e are closed.

  The pump P1 is operated to introduce a liquid (for example, groundwater) into the gas-liquid contact chamber 20, the seventh opening / closing device 60g is opened, and the liquid in the gas-liquid contact chamber 20 is discharged. The liquid can be introduced into the gas-liquid contact chamber 20 in the form of a mist. The liquid can be at a temperature lower than the temperature of the gas.

  The blower B1 is operated, and gas is introduced into the gas-liquid contact chamber 20 through the fifth pipeline 70e, the third pipeline 70c, and the first pipeline 70a. The gas is adiabatically pressurized by the pressure applied to the gas by the blower B1, and the temperature rises accordingly.

  The gas introduced into the gas-liquid contact chamber 20 comes into direct contact with the liquid, undergoes heat exchange, and is cooled by the liquid. In a pressurized state, the gas is cooled to a temperature equal to or close to the temperature of the liquid. The cooled gas is discharged through the second conduit 70b. At the time of the discharge, the gas expands adiabatically and the temperature of the gas decreases. That is, in addition to cooling by liquid, the temperature of the gas is further lowered by the action of adiabatic expansion during discharge.

  For example, when the temperature of the ground water is 15 ° C. and the temperature of the gas to be introduced is 25 to 30 ° C., the gas pressurized by the blower B1 is cooled to 15 ° C. in the ground water. The gas in a pressurized state expands adiabatically when discharged, the gas temperature further decreases, and the gas temperature becomes less than 15 ° C. The humidity of the discharged gas is, for example, 95% or more.

(B) During heating operation During the heating operation, the second opening / closing device 60b, the third opening / closing device 60c, and the fifth opening / closing device 60e are opened, and the first opening / closing device 60a, the fourth opening / closing device. 60d, the sixth opening / closing device 60f is closed.

  The pump P1 is operated to introduce liquid (for example, groundwater) into the gas-liquid contact chamber 20, the seventh opening / closing device 60g is opened, and the liquid introduced into the gas-liquid contact chamber 20 is discharged. The liquid can be introduced into the gas-liquid contact chamber 20 in the form of a mist. The liquid can be at a temperature higher than the temperature of the gas.

  The blower B1 is operated and gas is introduced into the gas-liquid contact chamber 20 through the first conduit 70a.

  The gas comes into direct contact with the liquid, undergoes heat exchange, and is heated by the liquid. The gas is heated to a temperature equal to or close to the temperature of the liquid in a decompressed state. The heated gas is sucked by the blower B1 and discharged through the second pipe line 70b, the third pipe line 70c, and the fourth pipe line 70d. As the gas is sucked from the gas-liquid contact chamber 20 by the blower B1, the gas in the gas-liquid contact chamber 20 is put under reduced pressure (negative pressure state). As the gas in the gas-liquid contact chamber 20 is depressurized, the gas expands adiabatically in the gas-liquid contact chamber 20, the temperature of the gas decreases, and the saturated water vapor amount decreases. As a result, a part of the water vapor contained in the gas becomes liquid water, and latent heat is generated. The latent heat is taken into the gas.

  The gas is pressurized through the blower B1 to increase the temperature, and the heated and decompressed gas discharged through the fourth pipe 70d is adiabatically compressed and released, so that the temperature of the gas further increases. Will rise.

  For example, when the temperature of the ground water is 15 ° C. and the temperature of the gas to be introduced is −10 to 10 ° C., the gas is heated to 15 ° C. in the ground water. Since the decompressed gas is pressurized by the blower B1 and compressed adiabatically when discharged, the gas temperature further rises and the gas temperature exceeds 15 ° C. The humidity of the discharged gas is, for example, 95% or less.

(3) Effects According to the gas-liquid contact device 10, since it is sufficient to use the blower B1 as a power source for flowing gas, power consumption is extremely small, and even when combined with a pump for drawing groundwater. A significant energy saving effect can be realized. Without using a compressor, the power can exchange heat with a large amount of air using only a blower, so that it is possible to achieve a large heat energy transfer with minimal power. That is, according to this gas-liquid contact device 10, compared to a method using groundwater as cooling water for the heat pump, a compressor is not used and power can be exchanged with a large amount of air only by a blower (blower). It is a system that can achieve a large amount of thermal energy transfer with the electric power.

  According to this gas-liquid contact device 10, it is possible to realize a cooling / heating device using groundwater as a heat source. As a method of air conditioning using stable water temperature of groundwater (about 15-18 ° C throughout the year), groundwater is introduced directly into a water-cooled heat pump as cooling water, and heat recovery is performed to produce cold water and hot water. Heat utilization heat pump system ”. Since this method uses water as a heat source, it has a much higher thermal efficiency than the heat pump method that uses heat collected from the air or a general geothermal heat pump. However, there is a limit to the amount of water and quality that can be constantly secured for the use of a large amount of groundwater, and its implementation is not progressing.

  On the other hand, in the gas-liquid contact device 10, the groundwater is used as a heat source, and the groundwater is brought into direct gas-liquid contact with the air. There is no loss and high efficiency can be realized.

  In addition, since the power source uses only a very low power device such as a blower, the energy saving effect is extremely large. Since a large amount of air can be heat exchanged without using a compressor, it is a system that can achieve a large heat energy transfer with minimal power.

  Furthermore, pressure resistance can be provided by making a gas-liquid contact chamber into a contact tower shape, and the temperature increase by adiabatic expansion and compression, and a cooling effect can also be added. This reproduces the temperature rise effect due to the vane phenomenon in the tower.

  It is also possible to attach a high performance filter to the discharge outlet for discharging the gas for the blower blowing system. It is possible to send purified air at the same level as the air purifier into the facility. According to the gas-liquid contact device 10, it is possible to perform only by switching the air inlet by a valve operation during the cooling operation and the heating operation, and during the heating operation, the blower (blower) is connected from the gas outlet. By sucking, the gas-liquid contact chamber is in a weak negative pressure state, cold air comes close to the ground water temperature (generally 15 to 18 ° C.) due to contact, etc., and the gas at the outlet rises slightly by pressurizing the blower To do. Thereafter, the vane phenomenon is reproduced in the apparatus, and a temperature rise due to latent heat is also added.

  During the cooling operation, in the midsummer case, for example, air near 30 ° C. is introduced into the gas-liquid contact by the blower (blower). At this time, although the temperature of the gas slightly rises due to pressurization of the blower (blower), it is cooled as close as possible to the temperature of the groundwater within the gas-liquid contact. The gas-liquid contact chamber is in a weak negative pressure state, expands when ejected, and the temperature further decreases.

  According to this gas-liquid contact device 10, when adjusting the temperature of the outside air in the storage chamber 112, the amount of electricity consumed can be significantly reduced.

  The present embodiment can be variously modified within the scope of the present invention.

  The present invention can be applied to the use of an air conditioner such as an air conditioner.

DESCRIPTION OF SYMBOLS 10 Gas-liquid contact apparatus 20 Gas-liquid contact chamber 30 Liquid inlet 32 Liquid outlet 40 Gas inlet 42 Gas outlet 50 Blower 60a-60g 1st-7th opening-and-closing part 70a-70e 1st-5th pipe Channel 80 Liquid introduction pipe 82 Liquid discharge pipe 100 First air conditioning system 110 First outdoor unit system 112 Outdoor unit 112a Suction unit 114 Storage chamber 116 Gas temperature adjusting device 120 Indoor unit 122 Air conditioning chamber 200 Second air conditioning system 210 Two outdoor unit systems 220 Guide passage 230 Blower

Claims (7)

One or more air conditioner outdoor units;
An outdoor unit system including a gas temperature adjusting device that adjusts a temperature of a gas that exchanges heat with a heat medium in the outdoor unit. In claim 1,
An outdoor unit system including a storage chamber for storing the outdoor unit of the one or more air conditioners. In claim 1,
An outdoor unit system including a guide path that guides the gas whose temperature is adjusted by the gas temperature adjusting device toward a suction unit of the outdoor unit that sucks a gas that exchanges heat with a heat medium. In any one of Claims 1-3,
The gas temperature adjusting device is an outdoor unit system driven by a power source derived from renewable energy. In any one of Claims 1-4,
The said gas temperature control apparatus is an outdoor unit system which is a heat exchanger for performing heat exchange between groundwater and the gas of the said storage chamber. In claim 5,
The gas temperature adjusting device is
A gas-liquid contact chamber for exchanging heat between gas and liquid;
A liquid inlet for introducing liquid into the gas-liquid contact chamber;
A liquid outlet for extracting liquid in the gas-liquid contact chamber;
A gas inlet for introducing gas into the gas-liquid contact chamber;
A gas outlet for deriving gas in the gas-liquid contact chamber;
Pressure control means for controlling the pressure of the gas in the gas-liquid contact chamber, or the pressure of the gas introduced into the gas-liquid contact chamber,
The pressure control means is an outdoor unit system configured to control a gas pressure without using a compressor and to include a blower. The air-conditioning system containing the outdoor unit system in any one of Claims 1-6.

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