JP2006234376A - Heating and cooling system using geothermal source allowing simultaneous operation for heating and cooling, and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating and cooling system allowing simultaneous operations for heating and cooling, using a geothermal source, capable of carrying out simultaneously or separately the cooling operation and the heating operation. <P>SOLUTION: A heating and cooling working fluid flowing in a cooling pipe 130 connected respectively to an evaporator 110 of a heat pump 100 and a condenser 120 and flowing in a heating pipe 140 is heat-exchanged with a working fluid in the heat pump 100 to be transmitted simultaneously to a cooling heat exchanger 152 and a heating heat exchanger 154 respectively, and a desired space is cooled or heated thereby. Of course, the cooling operation by the cooling and heating working fluid flowing in the cooling pipe 130 and the heating operation by the cooling and heating working fluid flowing in heating pipe 140 are selectively carried out. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cooling / heating system using geothermal heat and a control method thereof, and more particularly to a cooling / heating system using geothermal heat capable of simultaneous cooling / heating operation capable of performing cooling operation and heating operation simultaneously or separately and a control method thereof. .

  In general, in the heat pump, an evaporator, a compressor, a condenser, and an expansion valve constitute a cycle, and the working fluid flows through a fan coil unit provided in a space for cooling and heating while repeating liquefaction and vaporization. In addition, cooling and heating are performed by transferring heat with another working fluid.

  Such a heat pump is a main component of a waste heat utilization system that uses waste heat from domestic wastewater as a heat source, or a geothermal utilization system that uses a geothermal exchange pipe embedded in the ground to perform cooling and heating. Used as an element.

  Generally, in a waste heat utilization system, waste heat from domestic wastewater discharged from a bathhouse or the like is used as a heat source for an evaporator of a heat pump, and hot water is produced by a heat pump condenser using this heat.

  And a geothermal utilization system uses the geothermal heat transmitted from a geothermal exchange pipe at the time of heating as a heat source of the evaporator of a heat pump, and produces warm water with a condenser of a heat pump using this heat. During cooling, exhaust heat from the condenser generated by the heat pump is discharged through a geothermal exchange pipe.

  However, in the waste heat utilization system, there is a problem that another auxiliary boiler must be provided in preparation for the case where the temperature of domestic wastewater, which is a heat source, is low. There is a problem that the number of geothermal exchange pipes is increased due to excessive waste heat generated in the condenser of the heat pump, and a cooling tower for accommodating this must be further provided.

  In order to solve such problems, Korean Utility Model Registration No. 339349 has a heat pump attached to each of the geothermal exchange pipe side and the fan coil unit side to perform cooling operation and heating operation separately. A technology has been disclosed in which a cold / hot water heat storage tank is placed between a heat pump and a fan coil unit, and air conditioning is performed using cheap midnight power (see Patent Document 1).

  However, the conventional techniques as described above have the following problems.

  The Korean Utility Model Registration No. 339349 cannot perform cooling and heating at the same time. That is, the cooling operation or the heating operation must be selectively performed. Therefore, when the cooling / heating operation has to be performed at the same time as in an ice rink, it is necessary to separately provide a cooling system and a heating system. This eventually led to a problem that the installation cost of the system for air conditioning became high.

  In the prior art, the waste heat generated during the cooling operation or the heating operation is not regenerated and is almost discarded. Therefore, there also exists a problem that the energy use efficiency of an air conditioning system falls relatively.

Moreover, in the conventional technology, the geothermal heat exchange part necessary for the operation of the heat pump is designed to have the highest efficiency of the air conditioning system, and there is a problem that a large amount of space is required for installing the geothermal heat exchange part. .
Korean Utility Model Registration No. 339349 Specification

  The present invention has been made in view of the above problems, and an object thereof is to provide a cooling / heating system and a control method thereof capable of simultaneously performing a cooling operation and a heating operation using one system.

  Another object of the present invention is to provide a cooling / heating system including an ice heat storage tank and a control method thereof.

  Another object of the present invention is to provide a cooling / heating system and a control method thereof that can reduce the size of a geothermal exchanging section that exchanges heat with a heat pump.

  In order to achieve the above object, an air conditioning system according to the present invention is connected to a heat pump including an evaporator and a condenser in which heat exchange of working fluid is performed, and to the evaporator of the heat pump, and the working fluid of the heat pump and the A cooling / heating working fluid that exchanges heat with the evaporator is connected to a cooling pipe that flows inside, and a condenser of the heat pump, and a cooling / heating working fluid that exchanges heat between the working fluid of the heat pump and the condenser flows inside. It is connected to the heating pipe, the cooling pipe and the cooling / heating working fluid is transmitted to cool the predetermined space, and is connected to the heating pipe and the cooling / heating working fluid is transmitted. And a heat exchanger for heating and cooling including a heat exchanger for heating a predetermined space, and an evaporator and a condenser of the heat pump. The geothermal working fluid that exchanges heat with the working fluid of the heat pump and the evaporator or condenser flows in the interior, and the geothermal working fluid is transmitted to the geothermal pipe and the heat from the earth is transmitted. And a geothermal exchanging section for exchanging.

  The cooling pipe may further include an ice heat storage tank having a medium for storing heat by exchanging heat with a cooling / heating working fluid flowing inside the cooling pipe.

  In addition, a cooling pipe for transmitting a cooling / heating working fluid from the heat pump to the cooling / heating heat exchanger is provided so as to penetrate the ice storage tank, and the cooling / heating working fluid bypasses the ice storage tank and receives the cooling / heating working fluid. A bypass pipe is further provided to flow, and first and second switching valves are provided to control the flow of the cooling / heating working fluid depending on whether or not the ice heat storage tank is in operation.

  The geothermal pipe connecting the heat pump and the geothermal heat exchanging unit further includes an auxiliary heat exchanging unit, and the auxiliary heat exchanging unit heats the geothermal working fluid transmitted to the geothermal heat exchanging unit. It is characterized by discharging outside.

  The cooling pipe, the heating pipe, and the geothermal pipe are each provided with a circulation pump, and the circulation pumps are selectively combined to operate so that the working fluid flows inside the pipes. It is characterized by doing.

  In addition, the cooling / heating system according to the present invention exchanges heat between the working fluid of the heat pump and the evaporator, and connects the cooling / heating heat exchanger and the evaporator of the heat pump. Heating / cooling working fluid that exchanges heat between the working fluid and the condenser and flows inside the heating pipe that connects the heat exchange unit for air conditioning and the heat pump condenser, and working fluid that flows inside the evaporator and condenser of the heat pump Heat exchange with the working fluid of the heat pump and the evaporator or condenser, and the geothermal heat flowing inside the geothermal pipe connecting the geothermal exchanging part and the evaporator and condenser of the heat pump, respectively. In an air conditioning system in which an air conditioning operation is performed by exchanging heat between the working fluid and the air conditioning heating fluid, the heating pipe The heating / cooling working fluid flowing inside and the heat pump working fluid are heat-operated for heating operation, and at the same time, the cooling / heating working fluid flowing inside the cooling pipe and the heat pump working fluid are heat-exchanged for cooling operation. It is possible to make it possible.

  Further, at the same time as the heating operation is performed, heat of the cooling / heating working fluid flowing in the cooling pipe is transmitted to and accumulated in a medium of an ice heat storage tank provided in the cooling pipe. .

  In addition, when performing cooling using the heat accumulated in the ice heat storage tank, the cooling / heating working fluid flowing inside the cooling pipe that connects between the heat exchange unit for cooling and heating and the heat pump is disposed inside the heat pump. It is characterized by passing without heat exchange.

  According to the cooling / heating system and the control method thereof according to the present invention having such a configuration, the cooling operation and the heating operation can be performed simultaneously or separately, and it is possible to cope with various cooling / heating environments. Energy consumption required for operation can be minimized, and the space required for installation of the entire system can be minimized by downsizing the geothermal heat exchanger.

  According to the cooling and heating system using geothermal heat capable of simultaneous cooling and heating as in the present invention and the control method thereof, first, in the present invention, the cooling operation and the heating operation are selectively or simultaneously performed using one system. It can be carried out. Therefore, there is an effect that it is possible to cope with various air conditioning environments using one system.

  In the present invention, an ice heat storage tank is provided, and the waste heat during the heating operation is used for the cooling operation, thereby minimizing the energy consumption necessary for the cooling operation, and the required capacities of the heating operation and the cooling operation are different. In this case, it is possible to deal with the situation efficiently.

  Moreover, in this invention, the capacity | capacitance of a geothermal heat exchange part can be reduced relatively by using the auxiliary heat exchange part for discharging | emitting the heat | fever of the working fluid which flows between a heat pump and a geothermal heat exchange part outside. It becomes possible.

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

  FIG. 1 is a system diagram showing a preferred embodiment of an air-conditioning system using geothermal heat capable of simultaneous air-conditioning operation according to the present invention. As illustrated, the heat pump 100 includes an evaporator 110, a compressor (not shown), a condenser 120, and an expansion valve (not shown). The working fluid is caused to flow by a cycle constituted by the evaporator 110, the compressor, the condenser 120, and the expansion valve. The working fluid flows inside the heat pump 100 and transfers heat while repeating vaporization and liquefaction. For example, the working fluid takes heat from the outside while being evaporated by the evaporator 110 and releases heat to the outside while condensing by the condenser 120. Incidentally, in the present embodiment, three heat pumps 100 are used, but the number of uses is not limited to this, and varies depending on the capacity of the air conditioning.

  The evaporator 110 and the condenser 120 pass through another cooling / heating working fluid (hereinafter simply referred to as “cooling / heating working fluid”) that exchanges heat with the working fluid of the heat pump 100. Incidentally, HFC-404A is an example of the working fluid used in the heat pump 100, and water is an example of the cooling / heating working fluid. The cooling / heating working fluid flows in the cooling pipe 130 connected to the evaporator 110 of the heat pump 100 and the heating pipe 140 connected to the condenser 120.

  A cooling circulation pump 132 and a heating circulation pump 142 are respectively provided so that the cooling / heating working fluid smoothly flows in the cooling pipe 130 and the heating pipe 140. The cooling circulation pump 132 and the heating circulation pump 142 pressurize the cooling / heating working fluid to cause the cooling / heating working fluid to flow inside the cooling pipe 130 and the heating pipe 140, respectively.

  The cooling pipe 130 and the heating pipe 140 cause the cooling / heating working fluid to flow between the cooling / heating heat exchanger 150 and the heat pump 100, respectively. The air conditioning unit 150 is provided in a space that actually requires air conditioning. The cooling / heating heat exchanger 150 includes a cooling heat exchanger 152 connected to the cooling pipe 130 and a heating heat exchanger 154 connected to the heating pipe 140. A typical example of the cooling heat exchanger 152 and the heating heat exchanger 154 is a fan coil unit.

  The cooling heat exchanger 152 and the heating heat exchanger 154 are provided in a space for cooling or heating, respectively. Therefore, the cooling heat exchanger 152 and the heating heat exchanger 154 may be provided together in the same space or in different spaces. For example, in a room such as a hotel room or an ice rink seat where cooling or heating needs to be selected, both a cooling heat exchanger 152 and a heating heat exchanger 154 need to be provided, and ice Only the heat exchanger 152 for cooling needs to be provided in the link itself.

  A geothermal pipe 160 is provided to be connected to the evaporator 110 and the condenser 120 of the heat pump 100, respectively. A geothermal working fluid flows in the geothermal pipe 160. The geothermal working fluid exchanges heat with the working fluid of the heat pump 100 by the evaporator 110 or the condenser 120. The geothermal pipe 160 serves as a passage through which a geothermal working fluid that transmits heat flows between the heat pump 100 and a geothermal exchange unit 170 described later. Water can be used as the geothermal working fluid. The geothermal pipe 160 is provided with a geothermal circulation pump 162. The geothermal circulation pump 162 pressurizes the geothermal working fluid to flow inside the geothermal pipe 160.

  The geothermal exchange unit 170 is buried in the ground. An example of the geothermal exchange unit 170 is a geothermal exchange pipe. The geothermal exchange unit 170 is where heat is exchanged between the geothermal working fluid transmitted through the geothermal pipe 160 and the earth.

  Next, FIG. 2 is a diagram showing another embodiment of the present invention. In the present embodiment, for convenience of explanation, the same components as those in the embodiment shown in FIG.

  In the present embodiment, there is provided an ice heat storage tank 180 through which a cooling pipe 130 through which a cooling / heating working fluid exits from the heat pump 100 passes. The ice heat storage tank 180 is provided with a heat storage medium (for example, water). The heat storage medium may be solidified by heat exchange with a cooling / heating working fluid flowing inside the cooling pipe 130. That is, in the case of water, it becomes ice and stores heat.

  The ice heat storage tank 180 is provided, and the cooling pipe 130 is provided with first and second switching valves 181 and 182 to control the cooling / heating working fluid flowing inside the cooling pipe 130. A bypass pipe 184 is connected to the first switching valve 181. The bypass pipe 184 transmits the cooling / heating working fluid from the heat pump 100 to the cooling / heating heat exchanger 150 without passing through the ice heat storage tank 180. That is, the air conditioning working fluid selectively passes through the ice heat storage tank 180 by the control of the first switching valve 181.

  Thus, the ice heat storage tank 180 is provided in order to minimize the energy required for cooling when cooling and heating are used alternately. In other words, waste heat from the heat pump during heating is stored and stored in the ice heat storage tank 180 for use in subsequent cooling.

  FIG. 3 is a diagram showing still another embodiment of the present invention. In the present embodiment, for convenience of explanation, the same components as those in the embodiment shown in FIG.

  In this embodiment, an auxiliary heat exchange unit 190 is further provided between the geothermal pipe 160 and the geothermal exchange unit 170. An example of the auxiliary heat exchange unit 190 is a cooling tower. Such an auxiliary heat exchange unit 190 can reduce the capacity of the geothermal exchange unit 170 by releasing the heat of the geothermal working fluid to the outside. That is, the space required for the installation can be reduced by downsizing the geothermal exchange unit 170.

  The auxiliary heat exchanging unit 190 is provided separately from the geothermal heat exchanging unit 170, and is generally provided on the ground or on the roof of a building. The auxiliary heat exchanging unit 190 exchanges heat between the geothermal working fluid flowing to the geothermal heat exchanging unit 170 and the outside, and minimizes the capacity of the geothermal heat exchanging unit 170.

  Hereinafter, the operation of the cooling / heating system using the geothermal heat and the control method thereof according to the present invention, which can be operated simultaneously with cooling and heating, will be described in detail.

  The operation of the embodiment shown in FIG. 1 will be described with reference to FIG. First, the heating operation will be described. In the heating operation, the heat pump 100 is driven and a relatively high temperature cooling / heating working fluid is transmitted to the cooling / heating heat exchanging unit 150 through the heating pipe 140 to perform heating.

  That is, heat is transferred from the earth to the geothermal working fluid at the geothermal exchange unit 170. The geothermal working fluid flows (moves) along the geothermal pipe 160 by the geothermal circulation pump 162 provided in the geothermal pipe 160 connected to the evaporator 110 of the heat pump 100 and is transmitted to the heat pump 100. .

  The evaporator 110 of the heat pump 100 exchanges heat between the geothermal working fluid and the working fluid of the heat pump 100. Therefore, the working fluid of the heat pump 100 becomes relatively high due to heat exchange in the evaporator 110. The working fluid of the heat pump 100 circulates through a cycle constituting the heat pump 100 and is transmitted to the condenser 120. In the condenser 120, the working fluid of the heat pump 100 releases heat while condensing, and supplies heat to the cooling / heating working fluid that flows along the heating pipe 140.

  Therefore, the cooling / heating working fluid absorbs heat and becomes relatively high temperature, circulates along the heating pipe 140 by the heating circulation pump 142, and is transmitted to the heating heat exchanger 154. The flow of the cooling / heating working fluid between the heat exchanger 154 for heating and the heat pump 100 during the heating operation is indicated by arrows. In the heating heat exchanger 154, the cooling / heating working fluid heats a predetermined space by heat exchange.

  Next, the process of the cooling operation will be described. Even during the cooling operation, the heat pump 100 operates in the same manner as during the heating operation. That is, the working fluid of the heat pump 100 flows similarly in the cycle.

  Then, heat is exchanged in the evaporator 110, and a cooling / heating working fluid having a relatively low temperature is transmitted to the cooling / heating heat exchanger 150 through the cooling pipe 130. The cooling / heating working fluid transmitted to the cooling / heating heat exchanger 150 exchanges heat in the cooling heat exchanger 152 to cool a desired space.

  At this time, in the condenser 120 of the heat pump 100, heat is transferred from the working fluid of the heat pump 100 to the geothermal working fluid. That is, the heat generated when the working fluid of the heat pump 100 is condensed is transferred to the geothermal working fluid. The geothermal working fluid flows along the geothermal pipe 160 by the operation of a geothermal circulation pump 162 provided in the geothermal pipe 160 connected to the condenser 120, and is transmitted to the geothermal exchange unit 170. In the geothermal exchange section 170, heat exchange is performed between the geothermal working fluid and the earth. The flow of the cooling / heating working fluid inside the cooling pipe 130 during the cooling operation is shown by arrows in FIG.

  Next, a process in which the air conditioning operation is performed simultaneously will be described. When the cooling / heating operation is performed simultaneously, the geothermal exchange unit 170 is not used. That is, the heat pump 100 is driven to heat the heat transmitted from the condenser 120 to the cooling / heating working fluid, and the heat is transferred from the evaporator 110 to the cooling / heating working fluid.

  That is, heat generated by the working fluid of the heat pump 100 condensing in the condenser 120 is transmitted to the cooling / heating working fluid that flows inside the heating pipe 140 connected to the heating heat exchanger 154, and The working fluid is flowed by the heating circulation pump 142, and the heating heat exchanger 154 supplies heat to a desired space to perform heating.

  The working fluid of the heat pump 100 absorbs heat while evaporating in the evaporator 110. That is, heat is taken away from the cooling / heating working fluid flowing in the cooling pipe 130. In this case, the cooling / heating working fluid flowing inside the cooling pipe 130 has a relatively low temperature, is flowed by the cooling circulation pump 132, and performs heat exchange by the cooling heat exchanger 152, thereby obtaining a desired space. Cool the air.

  Next, the operation of the embodiment shown in FIG. 2 will be described with reference to FIGS. When the ice heat storage tank 180 is not used in the embodiment shown in FIG. 2, the cooling operation and the heating operation are performed in the same manner as described with reference to FIG. However, when the ice heat storage tank 180 is used or the medium of the ice heat storage tank 180 is solidified, the geothermal exchange unit 170 is not used. Of course, at this time (when the ice heat storage tank 180 is not used), the cooling / heating working fluid flowing inside the cooling pipe 130 does not pass through the ice heat storage tank 180 but passes through the bypass pipe 184.

  However, when the ice heat storage tank 180 is used, the geothermal exchange unit 170 may not be used. First, as shown by the arrows in FIG. 5, when heating operation is performed, the cooling / heating working fluid that flows inside the cooling pipe 130 is deprived of heat by the evaporator 110 of the heat pump 100, and the temperature is relatively low. This cooling / heating working fluid solidifies the medium of the ice heat storage tank 180. Thus, in order to store heat in the ice heat storage tank 180, the first switching valve 181 prevents the cooling / heating working fluid from flowing through the bypass pipe 184.

  That is, the first switching valve 181 and the second switching valve 182 are controlled so that the cooling / heating working fluid exits the evaporator 110 and flows again into the evaporator 110 through the ice heat storage tank 180. Thereby, heat can be accumulated in the ice heat storage tank 180 during the heating operation and can be used during the cooling operation.

  FIG. 6 is a diagram illustrating an operation state in which the cooling operation is performed using the heat of the ice heat storage tank 180. As shown in the drawing, the cooling / heating working fluid flowing inside the cooling pipe 130 passes through the ice heat storage tank 180 and is transmitted to the cooling heat exchanger 152, and then passes through the cooling heat exchanger 152. , And flows into the evaporator 110 of the heat pump 100. Such a flow of the cooling / heating working fluid is performed by the cooling circulation pump 132, and the cooling / heating working fluid passes through the evaporator 110 of the heat pump 100 as it is.

  When the heat of the ice heat storage tank 180 is completely eliminated by such a method, the system is driven as described with reference to FIG. 4 for the cooling operation. Incidentally, midnight power may be used as one of the methods for performing the cooling operation using the ice heat storage tank 180. That is, the medium of the ice heat storage tank 180 can be frozen using cheap late-night power and used when cooling operation is required.

  On the other hand, in the still another embodiment shown in FIG. 3, the auxiliary heat exchange unit 190 is further provided, so that the geothermal working fluid reaches a relatively low temperature before being transmitted to the geothermal exchange unit 170. Thereby, in the geothermal exchange part 170, the heat which should be discharge | released can be reduced relatively and the magnitude | size of the geothermal exchange part 170 can be minimized.

  As described above, although described and illustrated in detail with reference to the above embodiment, the present invention is not limited to this and does not depart from the basic technical idea of the present invention. Many other modifications will be possible to those skilled in the art within the scope. Needless to say, the present invention should be construed in accordance with the appended claims.

FIG. 1 is a system diagram showing a configuration of a preferred embodiment of an air-conditioning system using geothermal heat capable of simultaneous operation of air-conditioning according to the present invention. FIG. 2 is a system diagram showing the configuration of another embodiment of the present invention. FIG. 3 is a system diagram showing a configuration of still another embodiment of the present invention. FIG. 4 is an operation state diagram showing the operation of the embodiment shown in FIG. FIG. 5 is an operation state diagram showing a state where the heating operation in the embodiment shown in FIG. 2 can be performed. FIG. 6 is an operation state diagram showing a state in which the cooling operation by the ice heat storage tank in the embodiment shown in FIG. 2 can be performed.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Heat pump, 110 ... Evaporator, 120 ... Condenser, 130 ... Cooling pipe, 132 ... Cooling circulation pump, 140 ... Heating pipe, 142 ... Heating circulation pump, 150 ... Heat exchange part for cooling / heating, 152 ... Heat exchange for cooling 154 ... Heat exchanger for heating, 160 ... Geothermal pipe, 162 ... Geothermal circulation pump, 170 ... Geothermal exchange part, 190 ... Auxiliary heat exchange part

Claims (8)

A heat pump including an evaporator and a condenser in which heat exchange of the working fluid takes place;
A cooling pipe connected to an evaporator of the heat pump, and a cooling / heating working fluid that exchanges heat with the working fluid of the heat pump and the evaporator, and a condenser of the heat pump, and a working fluid of the heat pump A heating pipe in which a cooling / heating working fluid that performs heat exchange in the condenser flows, and
A cooling heat exchanger for cooling a predetermined space by being connected to the cooling pipe and transmitting a cooling / heating working fluid, and a predetermined space by being connected to the heating pipe and receiving a cooling / heating working fluid. A heat exchanger for heating and cooling including a heat exchanger for heating,
A geothermal pipe connected to each of the evaporator and condenser of the heat pump, and a geothermal working fluid that exchanges heat with the working fluid of the heat pump and the evaporator or the condenser,
A cooling / heating system using geothermal heat that can be operated simultaneously with cooling and heating, comprising a geothermal exchanging unit that is connected to the geothermal pipe and transmits a geothermal working fluid to the geothermal working fluid.   2. The simultaneous cooling and heating operation according to claim 1, wherein an ice heat storage tank having a medium for storing heat by exchanging heat with a cooling and heating working fluid flowing inside the cooling pipe is further provided in the cooling pipe. Air-conditioning system using natural geothermal heat.   A cooling pipe for transmitting a cooling / heating working fluid from the heat pump to the cooling / heating heat exchanger is provided so as to pass through the ice heat storage tank, and the cooling / heating working fluid flows in the cooling pipe by bypassing the ice storage tank. The air conditioner according to claim 2, further comprising a bypass pipe and a first and a second switching valve for controlling the flow of the air conditioning fluid according to the presence or absence of the operation of the ice heat storage tank. Air conditioning system using geothermal heat that can be operated simultaneously.   The geothermal pipe connecting the heat pump and the geothermal heat exchanging unit is further provided with an auxiliary heat exchanging unit, and the auxiliary heat exchanging unit transmits the heat of the geothermal working fluid transmitted to the geothermal heat exchanging unit to the outside. The cooling and heating system using geothermal heat capable of simultaneous cooling and heating operation according to claim 3, wherein the cooling and heating operation is performed.   Each of the cooling pipe, the heating pipe and the geothermal pipe is provided with a circulation pump, and the circulation pumps are selectively combined to operate so that the working fluid flows inside each pipe. The air-conditioning system using the geothermal which can perform the air-conditioning simultaneous operation as described in any one of Claims 1 thru | or 4 characterized by these. Heat exchange with the working fluid of the heat pump and the evaporator, and heat exchange with the cooling and heating working fluid flowing inside the cooling pipe connecting the heat exchange unit for cooling and heating and the evaporator of the heat pump, or with the working fluid and condenser of the heat pump. In addition, the cooling / heating working fluid that flows inside the heating pipe that connects the heat exchange unit for heating and cooling and the condenser of the heat pump, and the working fluid that flows inside the evaporator and the condenser of the heat pump exchange heat,
Heat exchange between the working fluid of the heat pump and the evaporator or the condenser, and a geothermal working fluid that flows inside a geothermal pipe that connects a geothermal exchange section and the evaporator and condenser of the heat pump, respectively, and the cooling and heating operation In an air conditioning system in which an air conditioning operation is performed by exchanging heat with a fluid,
Heating operation is performed by exchanging heat between the cooling / heating working fluid flowing inside the heating pipe and the working fluid of the heat pump, and simultaneously cooling operation is performed by exchanging heat between the cooling / heating working fluid flowing inside the cooling pipe and the working fluid of the heat pump. A control method for an air conditioning system capable of simultaneous operation of air conditioning, characterized in that   The heat of the cooling / heating working fluid flowing inside the cooling pipe is transmitted to and stored in a medium of an ice storage tank provided in the cooling pipe simultaneously with the heating operation. 6. A control method of an air conditioning system capable of simultaneous air conditioning operation according to 6.   When performing cooling using the heat accumulated in the ice heat storage tank, the cooling / heating working fluid that flows inside the cooling pipe that connects between the heat exchanger for cooling / heating and the heat pump exchanges heat inside the heat pump. The method for controlling an air conditioning system capable of simultaneous cooling and heating operation according to claim 7, wherein the air conditioning system passes simultaneously.

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