Computing device, computing method, control device, control method and storage medium

Abstract

The computing device disclosed herein determines the heat storage mode when storing heat through a geothermal utilization system, the geothermal utilization system comprising: a heat source well device; and heat storage auxiliary equipment having a cooling tower, a chiller, and a refrigerant circuit, wherein the computing device comprises: an acquisition unit for acquiring simulation conditions; a first calculation unit for calculating a first simulation result based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage achieved by the cooling tower; a second calculation unit for calculating a second simulation result based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage achieved by the chiller; and a determination unit for determining either the first heat storage mode or the second heat storage mode based on the first simulation result and the second simulation result.

Description

Technical Field

[0001] This disclosure relates to computing devices, computing methods, programs, control devices, control methods, and control programs.

[0002] This application claims priority to Japanese Patent Application No. 2021-78637, filed on May 6, 2021, the contents of which are incorporated herein by reference. Background Technology

[0003] In recent years, a geothermal utilization system that utilizes groundwater as a heat source or a cold source has been proposed.

[0004] For example, Patent Document 1 discloses a geothermal utilization system comprising: a heat source well device having a warm water well, a cold water well, and wellside piping connecting them; and a heat source machine having a refrigeration cycle having a condenser and an evaporator. In this geothermal utilization system, a cold and heat storage operation mode and a cold and heat release operation mode can be switched according to the season. In the cold and heat storage operation mode, heat exchange occurs between the evaporator of the heat source machine and the wellside piping, and between the condenser of the heat source machine and the load. In the cold and heat release operation mode, heat exchange occurs between the condenser of the heat source machine and the wellside piping, and between the evaporator of the heat source machine and the load.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2018-173257 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] Furthermore, in a geothermal utilization system as described in Patent Document 1, it is ideal to always operate at a higher efficiency. For example, environmental conditions such as temperature and humidity change daily. Therefore, it is preferable to operate the geothermal utilization system in a more appropriate operating mode, not only to match the seasons such as summer and winter, but also to match the operating conditions.

[0010] This disclosure was made to solve the above-mentioned problems, and its purpose is to provide a computing device, computing method, program, control device, control method, and control program that can operate in a heat storage mode that matches environmental conditions.

[0011] Technical solution

[0012] To address the aforementioned problems, the computing device of this disclosure determines the heat storage mode when storing heat through a geothermal utilization system. The geothermal utilization system includes: a heat source well device comprising a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump installed on the well-side piping; and heat storage auxiliary equipment comprising a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping. The computing device further includes: an acquisition unit for acquiring simulation conditions; a first calculation unit for calculating a first simulation result based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage achieved by the cooling tower; a second calculation unit for calculating a second simulation result based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage achieved by the chiller; and a determination unit for determining either the first heat storage mode or the second heat storage mode based on the first simulation result and the second simulation result.

[0013] The calculation method disclosed herein determines the heat storage mode when storing heat through a geothermal utilization system, the geothermal utilization system comprising: a heat source well device, including a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump installed on the well-side piping; and heat storage auxiliary equipment, including a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping. In the calculation method, simulation conditions are obtained; a first simulation result is calculated based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage achieved by the cooling tower; a second simulation result is calculated based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage achieved by the chiller; and either the first heat storage mode or the second heat storage mode is determined based on the first simulation result and the second simulation result.

[0014] The program disclosed herein enables a computer to execute a method for determining a heat storage mode when storing heat through a geothermal utilization system, the geothermal utilization system comprising: a heat source well device having a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump disposed on the well-side piping; and heat storage auxiliary equipment having a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping, wherein the method comprises: acquiring simulation conditions; calculating a first simulation result based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage achieved by the cooling tower; calculating a second simulation result based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage achieved by the chiller; and determining either the first heat storage mode or the second heat storage mode based on the first simulation result and the second simulation result.

[0015] Invention Effects

[0016] The computing device, computing method, program, control device, control method, and control program disclosed herein can operate in a heat storage mode that matches environmental conditions. Attached Figure Description

[0017] Figure 1 This is a system diagram illustrating the general configuration of a geothermal utilization system according to an embodiment of the present disclosure.

[0018] Figure 2 This is a block diagram illustrating the functional configuration of a geothermal utilization system according to an embodiment of the present disclosure.

[0019] Figure 3 This is a diagram showing the flow of groundwater and media during the operation of the geothermal utilization system in the cooling operation mode according to the embodiments of this disclosure.

[0020] Figure 4 This is a diagram showing the flow of groundwater and media during the heating operation mode of the geothermal utilization system according to the embodiments of this disclosure.

[0021] Figure 5 This is a diagram showing the flow of groundwater and media in the geothermal utilization system of the present disclosure, where cold water thermal storage is operated in the first thermal storage mode.

[0022] Figure 6 This is a diagram showing the flow of groundwater and media in the geothermal utilization system of the present disclosure, where cold water thermal storage is operated in the second thermal storage mode.

[0023] Figure 7 This is a flowchart illustrating the calculation method of an embodiment of the present disclosure.

[0024] Figure 8 This is a flowchart illustrating the control method of an embodiment of the present disclosure.

[0025] Figure 9 This diagram illustrates an example of the hardware configuration of a computer included in the computing device and control device of an embodiment of the present disclosure. Detailed Implementation

[0026] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In all the drawings, the same or equivalent components are labeled with the same reference numerals, and common descriptions are omitted.

[0027] <Implementation Method>

[0028] Reference Figures 1 to 8 The implementation methods of the geothermal utilization system disclosed herein will be described.

[0029] (Composition of a geothermal utilization system)

[0030] like Figure 1 , Figure 2 As shown, the geothermal utilization system 1 mainly includes a heat source well device 10, a thermal storage auxiliary device 100, and a heat exchanger 4 (see reference). Figure 1 ), computing device 200 (refer to) Figure 2 ) and control device 300 (refer to Figure 2 ).

[0031] (Composition of heat source well equipment)

[0032] like Figure 1 As shown, the heat source well equipment 10 mainly includes a warm water well 21, a cold water well 22, well-side piping 3, and a pump 31.

[0033] Warm water well 21 and cold water well 22 extend from the ground into the aquifer.

[0034] The warm water well 21 and the cold water well 22 are respectively configured to extract groundwater from the aquifer, or to return groundwater from the interior of the warm water well 21 and the cold water well 22 to the aquifer.

[0035] The heat source well equipment 10 draws groundwater from one of the warm water well 21 and the cold water well 22, exchanges heat in the heat exchanger 4, and then injects the heat-exchanged groundwater into the other of the two wells. In other words, the heat source well equipment 10 has two operating modes: one in which groundwater is drawn from the warm water well 21 and injected into the cold water well 22, and the other in which groundwater is drawn from the cold water well 22 and injected into the warm water well 21.

[0036] The wellside piping 3 connects the warm water well 21 to the cold water well 22.

[0037] Both ends of the wellside piping 3 extend into the interior of the warm water well 21 and the cold water well 22.

[0038] For example, the well-side piping 3 can also be immersed at both ends in the groundwater of the warm water well 21 and the cold water well 22 to connect the warm water well 21 and the cold water well 22.

[0039] Pump 31 is installed in the wellside piping 3.

[0040] Pumps 31 are respectively installed at both ends of the wellside piping 3.

[0041] Pump 31 pumps water from warm water well 21 and cold water well 22 to the well-side piping 3.

[0042] For example, pump 31 can also be installed at both ends of well-side piping 3 and immersed in groundwater in warm water well 21 and cold water well 22.

[0043] For example, pump 31 can also have its output changed by inverter control.

[0044] Heat exchanger 4 exchanges heat between the groundwater in the wellside piping 3 and the medium on the side of the thermal storage auxiliary equipment 100.

[0045] For example, heat exchanger 4 performs heat exchange between groundwater drawn from warm water well 21 and flowing in wellside piping 3 and the medium on the side of thermal storage auxiliary equipment 100. After heat exchange, the groundwater flows from heat exchanger 4 into wellside piping 3 and is injected into cold water well 22.

[0046] For example, heat exchanger 4 performs heat exchange between groundwater drawn from cold water well 22 and flowing in wellside piping 3 and the medium on the side of thermal storage auxiliary equipment 100. After heat exchange, the groundwater flows from heat exchanger 4 into wellside piping 3 and is injected into warm water well 21.

[0047] For example, the heat exchanger 4 can also be installed on the ground in the middle of the well-side piping 3.

[0048] With the water passing through heat exchanger 4 being warm water, warm water heat storage is carried out in warm water well 21.

[0049] With the water passing through heat exchanger 4 being cold water, cold water heat storage is carried out in cold water well 22.

[0050] Here, "warm water" refers to water with a temperature higher than the initial underground temperature of the aquifer, while "cold water" refers to water with a temperature lower than the initial underground temperature of the aquifer.

[0051] For example, the initial underground temperature of the groundwater in an aquifer is 18°C.

[0052] (Composition of thermal storage auxiliary equipment)

[0053] The thermal storage auxiliary equipment 100 utilizes the medium in the heat exchanger 4 that exchanges heat with the groundwater in the wellside piping 3.

[0054] The thermal storage auxiliary equipment 100 includes at least a cooling tower 130, a heat source unit 110, and a refrigerant circuit 101.

[0055] In this embodiment, the heat storage auxiliary equipment 100 includes, for example, a heat source 110, an air conditioner 120, a cooling tower 130, and a refrigerant circuit 101.

[0056] The heat storage auxiliary equipment 100 can also be configured as an air conditioning system, for example, with a heat source unit 110 and an air conditioner 120.

[0057] For example, the heat source unit 110 can also be a heat pump equipped with a condenser, evaporator, compressor, etc.

[0058] The air conditioner 120 regulates the air in the space where it is installed by exchanging heat with a medium (chilled water) supplied from the heat source 110.

[0059] Cooling tower 130 cools the cooling water by means of the heat of vaporization when the cooling water comes into contact with the atmosphere and vaporizes. Cooling tower 130 circulates the cooling water between cooling tower 130 and second heat exchanger 140.

[0060] The second heat exchanger 140 exchanges heat between the medium (cooling water) in the refrigerant circuit 101 on the air conditioning system side and the cooling water on the cooling tower 130 side.

[0061] The second heat exchanger 140 cools the medium in the refrigerant circuit 101 on the air conditioning system side by exchanging heat with the cooling water that has been cooled in the cooling tower 130.

[0062] The refrigeration unit 150 is composed of the aforementioned heat source unit 110 and cooling tower 130.

[0063] The refrigerant circuit 101 forms a medium flow path between the heat exchanger 4, the heat source unit 110, the air conditioner 120, and the second heat exchanger 140.

[0064] The refrigerant circuit 101 is appropriately equipped with pumps, on / off valves, etc. (not shown), and the medium circulates in a prescribed path between the heat exchanger 4, the heat source unit 110, the air conditioner 120, and the second heat exchanger 140 according to the operating mode.

[0065] For example, the thermal storage auxiliary device 100 can switch between cooling and heating operation modes by changing the circulation path of the medium in the refrigerant circuit 101.

[0066] (Composition of refrigeration operation mode)

[0067] like Figure 3 As shown, in cooling operation mode, cooling operation is performed on the side of the thermal storage auxiliary equipment 100, and thermal storage of warm water is carried out in the warm water well 21. In this case, the pump 31 of the cold water well 22 draws groundwater and sends it to the heat exchanger 4. Heat exchanger 4 conducts heat exchange between the groundwater in the well-side piping 3 and the medium flowing in the refrigerant circuit 101 on the side of the thermal storage auxiliary equipment 100. On the side of the thermal storage auxiliary equipment 100, the medium (cooling water) cooled by heat exchange in the heat exchanger 4 is sent to the heat source unit 110 and exchanges heat with the medium (cold water) on the side of the air conditioner 120. As a result, the air conditioner 120 connected to the heat source unit 110 can perform indoor cooling. On the other hand, the medium (cooling water) heated by heat exchange in the heat source unit 110 is sent back to the heat exchanger 4 and circulated after being cooled. In the heat exchanger 4, heat exchange occurs between the heated medium and the groundwater flowing in the well-side piping 3, thereby heating the groundwater. The heated groundwater is injected into the warm water well 21 through the wellside pipe 3, thereby storing the warm water heat.

[0068] (Composition of heating operation mode)

[0069] like Figure 4 As shown, in heating operation mode, heating is performed on the side of the thermal storage auxiliary equipment 100, and cold water thermal storage is carried out in the cold water well 22. In this case, the pump 31 of the warm water well 21 draws groundwater (warm water) and sends it to the heat exchanger 4. Heat exchanger 4 conducts heat exchange between the groundwater in the well-side piping 3 and the medium flowing in the refrigerant circuit 101 on the side of the thermal storage auxiliary equipment 100. On the side of the thermal storage auxiliary equipment 100, the medium heated by the heat exchange in the heat exchanger 4 is sent to the heat source unit 110 and undergoes heat exchange in the heat source unit 110. As a result, the air conditioner 120 connected to the heat source unit 110 can heat the room. On the other hand, the medium cooled by the heat exchange in the heat source unit 110 is sent back to the heat exchanger 4 and circulated. In the heat exchanger 4, the cooled medium undergoes heat exchange with the groundwater flowing in the well-side piping 3, thereby cooling the groundwater. The cooled groundwater is injected into the cold water well 22 through the wellside pipe 3, thereby storing heat in the cold water.

[0070] In addition, during winter (or at night) when the outside air temperature is low, the geothermal utilization system 1 cools the groundwater without heating, thereby enabling cold water heat storage in the cold water well 22.

[0071] The geothermal utilization system 1 can switch between a first heat storage mode, which includes heat storage by the cooling tower 130, and a second heat storage mode, which includes heat storage by the chiller 150, when performing cold water heat storage.

[0072] The geothermal utilization system 1, under the control of the control device 300 described later, performs cold water heat storage in either the first heat storage mode or the second heat storage mode.

[0073] (Composition of the first thermal storage mode)

[0074] like Figure 5 As shown, in the first heat storage mode, cooling water cooled by the heat of vaporization during contact with the atmosphere in the cooling tower 130 is sent to the second heat exchanger 140. In the second heat exchanger 140, heat exchange occurs between the cooling water and the medium in the refrigerant circuit 101. That is, the second heat exchanger 140 cools the medium in the refrigerant circuit 101 using the cooling water cooled in the cooling tower 130. The cooled medium is then sent to the heat exchanger 4 to exchange heat with the groundwater in the wellside piping 3. In this case, the pump 31 of the warm water well 21 draws groundwater (warm water) and sends it to the heat exchanger 4. As a result, the groundwater in the wellside piping 3 is cooled and injected into the cold water well 22 for cold water heat storage.

[0075] (Composition of the second thermal storage mode)

[0076] like Figure 6 As shown, in the second heat storage mode, a cooling tower 130 and a heat source unit 110 are used as a chiller 150. In this case, the pump 31 of the warm water well 21 draws groundwater (warm water) and sends it to the heat exchanger 4. On the side of the heat storage auxiliary equipment 100, the medium is sent from the side of the second heat exchanger 140 to the heat source unit 110. The heat source unit 110 cools the medium (cold water) sent from the side of the heat exchanger 4 through heat exchange. The medium (cold water) cooled by the heat exchange in the heat source unit 110 is sent to the heat exchanger 4. In the heat exchanger 4, the cooled medium exchanges heat with the groundwater flowing in the well-side piping 3, thereby cooling the groundwater. The cooled groundwater is injected into the cold water well 22 through the well-side piping 3, thereby performing cold water heat storage. On the other hand, the medium (cooling water) whose temperature rises by heat exchange with the medium (cold water) on the side of the heat exchanger 4 in the heat source unit 110 is sent to the second heat exchanger 140. The second heat exchanger 140 cools the medium supplied from the heat source 110 by exchanging heat with the cooling water that has been cooled in the cooling tower 130.

[0077] (The structure of a computing device)

[0078] like Figure 2 As shown, the computing device 200 determines the heat storage mode when storing heat in the geothermal utilization system 1.

[0079] The computing device 200 performs a simulation calculation in advance to determine which of the first and second heat storage modes is appropriate for cold water heat storage in the geothermal utilization system 1. The computing device 200 determines either the first or the second heat storage mode based on the results of the simulation calculation.

[0080] In this embodiment, the computing device 200 is included in the geothermal utilization system 1. That is, the computing device 200 is located at the installation site of the geothermal utilization system 1.

[0081] The computing device 200 may also be provided together with the control device 300, for example.

[0082] The computing device 200 may also be assembled into the control device 300 as part of the control device 300.

[0083] In addition, the computing device 200 may be located in a different location than the geothermal utilization system 1.

[0084] For example, the computing device 200 may also be configured to communicate with the control device 300 via an external network using wired or wireless means.

[0085] The computing device 200 functionally includes an acquisition unit 210, a first calculation unit 220, a second calculation unit 230, a temperature calculation unit 240, and a decision unit 250.

[0086] The acquisition unit 210 acquires the simulation conditions.

[0087] The acquisition unit 210 acquires the simulation conditions that are prerequisites for the simulation calculations performed in order to determine the heat storage mode.

[0088] The simulation conditions obtained include, for example, external air conditions.

[0089] External air conditions may also include, for example, at least one of external air temperature and external air humidity.

[0090] External air conditions can also include both external air temperature and external air humidity.

[0091] In this embodiment, the external air conditions include, for example, the assumed external air temperature (range) and external air humidity (range) in the location (area) where the geothermal utilization system 1 is installed.

[0092] The simulation conditions acquired by the acquisition unit 210 may include pumping temperature and upper limit injection temperature. Pumping temperature is the temperature of the groundwater that can be pumped from the warm water well 21. Upper limit injection temperature is the upper limit value of the injection temperature of groundwater injected into the cold water well 22 when cold water is being stored for heat. For example, upper limit injection temperature is the upper limit value of the injection temperature that suppresses the temperature rise of the groundwater in the cold water well 22 when groundwater is injected into the cold water well 22.

[0093] The acquisition unit 210 acquires the external air temperature and external air humidity as hypothetical external air conditions for simulation.

[0094] The acquisition unit 210 may also include the specifications of the machines constituting the heat source well equipment 10 and the heat storage auxiliary equipment 100 as simulation conditions.

[0095] The specifications of the machine may also include, for example, the pump 31 of the heat source well equipment 10, the heat source machine 110 of the heat storage auxiliary equipment 100, the cooling tower 130, the pump (not shown) installed in the refrigerant circuit 101, and the specifications of the medium on the side of the heat storage auxiliary equipment 100.

[0096] The acquisition unit 210 can also acquire simulation conditions by, for example, by receiving inputs such as numerical values ​​of each simulation condition from an operator.

[0097] The acquisition unit 210 can also acquire simulation conditions from, for example, a database that stores the specifications of each machine constituting the heat source well equipment 10 and the thermal storage auxiliary equipment 100.

[0098] The first calculation unit 220 performs simulation calculations based on the simulation conditions obtained by the acquisition unit 210, including a first heat storage mode in which heat storage is achieved by the cooling tower 130.

[0099] The first computing unit 220 implements, based on simulation conditions, as follows: Figure 5 The simulation calculations show the operation in the first heat storage mode, which includes the use of cooling tower 130 for heat storage.

[0100] The first calculation unit 220 performs simulation calculations on the case of cold water heat storage in the cold water well 22 by using the cooling tower 130 to cool the medium.

[0101] The first calculation unit 220 performs multiple simulation calculations with varying temperatures and humidity levels within a range of hypothetical external air temperatures and humidity levels obtained as hypothetical external air conditions.

[0102] The first calculation unit 220 calculates (outputs) the result obtained through simulation calculation, which is the first simulation result.

[0103] The first calculation unit 220 may also include at least one of injection water temperature, heat storage capacity, and power as a first simulation result obtained through simulation calculation. Injection water temperature is the temperature of groundwater injected into the cold water well 22 from the wellside piping 3, which has undergone heat exchange with the refrigerant circuit 101. Heat storage capacity is the energy obtained by injecting heat into the cold water well 22 from the wellside piping 3, which has undergone heat exchange with the refrigerant circuit 101. Power required for heat storage refers to the power required to operate the pump 31 on the heat source well equipment 10 side, various pumps (not shown) in the refrigerant circuit 101 of the heat storage auxiliary equipment 100, and the cooling tower 130 in the first heat storage mode.

[0104] The second calculation unit 230 performs simulation calculations on a second heat storage mode, including heat storage achieved by the chiller 150 (heat source 110 and cooling tower 130), based on the simulation conditions obtained by the acquisition unit 210.

[0105] The second computing unit 230, based on simulation conditions, is implemented in such a... Figure 6 The simulation calculations show the operation in a second heat storage mode, which includes the use of a refrigeration unit 150 for heat storage.

[0106] The second calculation unit 230 performs simulation calculations on the case of cold water heat storage in the cold water well 22 by using a refrigerator 150 to cool the medium.

[0107] The second calculation unit 230 performs multiple simulation calculations by varying the temperature and humidity within a range of hypothetical external air temperature and humidity obtained as hypothetical external air conditions.

[0108] The second calculation unit 230 calculates (outputs) the result obtained through simulation calculation, which is the second simulation result.

[0109] The second calculation unit 230 may also include at least one of the following as the calculated second simulation result: water injection temperature, heat storage capacity, and power.

[0110] The second calculation unit 230 can also calculate the second simulation result in a manner that makes the amount of heat stored in the second heat storage mode the same as the amount of heat stored in the first heat storage mode.

[0111] The power calculated by the second calculation unit 230 is the power used to operate the pump 31 on the side of the heat source well equipment 10, various pumps (not shown) on the side of the refrigerant circuit 101 of the heat storage auxiliary equipment 100, the cooling tower 130, and the heat source machine 110.

[0112] The temperature calculation unit 240 calculates the maximum external air temperature at which the injection temperature of the groundwater injected into the cold water well 22 from the wellside pipe 3, which has exchanged heat with the refrigerant circuit 101, becomes the upper limit injection temperature in the first heat storage mode.

[0113] The decision unit 250 determines either the first heat storage mode or the second heat storage mode based on the first simulation result calculated by the first calculation unit 220 and the second simulation result calculated by the second calculation unit 230.

[0114] The decision unit 250 can also compare, for example, the water injection temperature, heat storage, and power contained in the first simulation result and the second simulation result.

[0115] For example, the result of comparing the first simulation result with the second simulation result is that the decision unit 250 determines the one with the lower water injection temperature in the first heat storage mode and the second heat storage mode as the heat storage mode.

[0116] Alternatively, if the simulation is performed in the same way as the heat storage in the second heat storage mode and the heat storage in the first heat storage mode, the decision unit 250 will determine the side with the lower water injection temperature as the heat storage mode.

[0117] For example, the result of comparing the first simulation result with the second simulation result is that the decision unit 250 determines the one with more heat storage in the first heat storage mode and the second heat storage mode as the heat storage mode.

[0118] For example, the comparison between the first simulation result and the second simulation result determines the heat storage mode based on the comparison between the power required for heat storage in the first heat storage mode and the power required for heat storage in the second heat storage mode.

[0119] Alternatively, if the simulation is performed in the same way as the heat storage in the second heat storage mode, the decision unit 250 determines the heat storage mode based on the comparison between the power required for heat storage in the first heat storage mode and the power required for heat storage in the second heat storage mode.

[0120] Furthermore, the decision unit 250 selects the second heat storage mode as the heat storage mode when the hypothetical outside air temperature is above the limit outside air temperature calculated by the temperature calculation unit 240. This is because, sometimes when using the first heat storage mode of the cooling tower 130, if the outside air temperature is high, the cooling in the cooling tower 130 is not sufficient, and the water injection temperature will exceed the upper limit water injection temperature.

[0121] The decision unit 250 can also compare a predetermined target cold water heat storage capacity (e.g., cold water heat storage is performed because the predicted cold water heat storage capacity is equal to the warm water heat storage capacity) with the current cold water heat storage capacity, and determine the second heat storage mode that can perform large-capacity cold water heat storage as the heat storage mode. This is because in the first heat storage mode using the cooling tower 130, it is possible that insufficient cold water heat storage capacity may not be obtained.

[0122] In the decision unit 250, the result of comparing the first simulation result with the second simulation result is to generate heat storage mode information that associates the heat storage mode determined in the first heat storage mode and the second heat storage mode with the hypothetical external air conditions at the time of each simulation calculation.

[0123] The decision unit 250 can also generate heat storage mode information that associates the determined heat storage mode with a hypothetical outside air temperature calculated by simulation (e.g., every 1°C).

[0124] The decision unit 250 can also generate heat storage mode information that associates the determined heat storage mode with the hypothetical external air humidity (e.g., every 5%) calculated through simulation.

[0125] The decision unit 250 can also generate heat storage mode information that establishes a correlation between the determined heat storage mode and various combinations of hypothetical external air temperature and hypothetical external air humidity calculated through simulation.

[0126] The decision unit 250 outputs the generated heat storage mode information to the control device 300, which will be described later.

[0127] The operation of the computing device 200 in this embodiment will be explained.

[0128] The operation of the computing device 200 corresponds to the implementation of the computing method.

[0129] Implementation of computing device 200 Figure 7 The steps shown.

[0130] First, the acquisition unit 210 acquires the simulation conditions (ST01: Step of acquiring simulation conditions). The acquisition unit 210 acquires the external air conditions (external air temperature, external air humidity) as simulation conditions.

[0131] For example, the acquisition unit 210 can further acquire the pumping temperature and the upper limit injection temperature as simulation conditions.

[0132] For example, the acquisition unit 210 may further acquire information such as the pump 31 of the heat source well equipment 10, the heat source machine 110 of the heat storage auxiliary equipment 100, the cooling tower 130, the pump (not shown) installed in the refrigerant circuit 101, and the specifications of the medium on the side of the heat storage auxiliary equipment 100 as simulation conditions.

[0133] Following ST01, the first calculation unit 220 performs a simulation calculation of a first heat storage mode, including heat storage implemented by the cooling tower 130, based on the simulation conditions obtained by the acquisition unit 210, and obtains a first simulation result (ST02: step of performing simulation calculation in the first heat storage mode).

[0134] Following ST02, the second calculation unit 230 performs a simulation calculation of a second heat storage mode, including heat storage implemented by the refrigerator 150, based on the simulation conditions obtained by the acquisition unit 210, and obtains a second simulation result (ST03: step of performing simulation calculation in the second heat storage mode).

[0135] Following the implementation of ST03, the decision unit 250 compares the power required for heat storage in the first heat storage mode with the power required for heat storage in the second heat storage mode based on the first simulation results obtained in ST02 and the second simulation results obtained in ST03 (ST04: step of comparing the power required for the first heat storage mode with the power required for the second heat storage mode).

[0136] Furthermore, following the implementation of ST02, the temperature calculation unit 240 calculates the limit external air temperature at which the water injection temperature of the cold water well 22 becomes the upper limit water injection temperature when heat storage is carried out in the first heat storage mode (ST05: step of calculating the limit external air temperature in the first heat storage mode). As for ST05, ST04 and ST05 can be performed in parallel, or ST05 can be performed before or after ST03 and ST04.

[0137] After ST04 and ST05 are completed, the decision unit 250 determines either the first heat storage mode or the second heat storage mode based on the first simulation result calculated by the first calculation unit 220 and the second simulation result calculated by the second calculation unit 230 (ST06: step of determining the heat storage mode). The decision unit 250 may also compare the water injection temperature, heat storage capacity, and power contained in the first simulation result and the second simulation result, for example, to determine the heat storage mode in a way that increases energy efficiency.

[0138] The decision unit 250 can also select a second heat storage mode as the heat storage mode in such a way that the water injection temperature of the cold water well 22 does not exceed the upper limit water injection temperature, for example, at an external air temperature that is above the limit external air temperature.

[0139] After ST06 is implemented, the decision unit 250 generates heat storage mode information that associates the determined heat storage mode with each hypothetical external air condition (ST07: Step to generate heat storage mode information). The decision unit 250 outputs the generated heat storage mode information to the control device 300.

[0140] (Composition of the control device)

[0141] like Figure 2 As shown, the control device 300 controls the operation of the geothermal utilization system 1.

[0142] The control device 300 controls the operation of each part of the geothermal utilization system 1 in the cooling operation mode, heating operation mode, first heat storage mode, and second heat storage mode, respectively.

[0143] When performing cold water heat storage, the control device 300 operates in a heat storage mode determined by the computing device 200.

[0144] The control device 300 operates the geothermal utilization system 1 in a heat storage mode corresponding to the actual external air conditions during operation.

[0145] The control device 300 includes a mode information storage unit 310, an external air condition acquisition unit 320, and an operation control unit 330.

[0146] The mode information storage unit 310 stores the heat storage mode information output from the computing device 200.

[0147] The mode information storage unit 310 stores the heat storage mode information that the computing device 200 associates with each hypothetical external air condition.

[0148] External air condition acquisition unit 320 acquires actual external air conditions.

[0149] The external air condition acquisition unit 320 acquires at least one of the actual external air temperature and the actual external air humidity as the actual external air condition.

[0150] The external air condition acquisition unit 320 can also acquire the actual external air temperature and the actual external air humidity as actual external air conditions.

[0151] The external air condition acquisition unit 320 can also acquire the actual external air temperature and actual external air humidity at the location where the geothermal utilization system 1 is located through, for example, a thermometer or a hygrometer, and use these as the actual external air conditions.

[0152] The external air condition acquisition unit 320 can also acquire, for example, values ​​of actual external air temperature and actual external air humidity input by the operator.

[0153] The external air condition acquisition unit 320 can also acquire data on actual external air temperature and actual external air humidity via an external network.

[0154] The operation control unit 330 operates the geothermal utilization system 1 based on the heat storage mode information stored in the mode information storage unit 310.

[0155] The operation control unit 330 operates the geothermal utilization system 1 in either the first heat storage mode or the second heat storage mode based on the heat storage mode information stored in the mode information storage unit 310 and the actual external air conditions.

[0156] The operation control unit 330 refers to the heat storage mode information stored in the mode information storage unit 310 and obtains a heat storage mode that is associated with hypothetical external air conditions corresponding to the obtained actual external air conditions.

[0157] The operation control unit 330 uses the obtained heat storage mode to control each part of the heat source well equipment 10 and the heat storage auxiliary equipment 100 to perform cold water heat storage operation.

[0158] The operation of the control device 300 in this embodiment will be explained.

[0159] The operation of the control device 300 is equivalent to the implementation of the control method.

[0160] Control device 300 implementation Figure 8 The steps shown.

[0161] First, the external air condition acquisition unit 320 acquires the actual external air conditions (ST11: Step of acquiring actual external air conditions).

[0162] After ST11 is implemented, the operation control unit 330 refers to the heat storage mode information stored in the mode information storage unit 310 and obtains a heat storage mode that is associated with the hypothetical external air conditions corresponding to the obtained actual external air conditions (ST12: step of obtaining information on the heat storage mode corresponding to the actual external air conditions). When the result of comparing the first heat storage mode and the second heat storage mode under the actual external air conditions at this time is appropriate, the operation control unit 330 obtains the heat storage mode determined by the computing device 200.

[0163] After ST12 is implemented, the operation control unit 330 operates the geothermal utilization system 1 based on the obtained heat storage mode (ST13: the step of operating the geothermal utilization system based on the obtained heat storage mode).

[0164] When the operation control unit 330 obtains the first heat storage mode corresponding to the actual external air conditions, it performs cold water heat storage in the first heat storage mode.

[0165] When the operation control unit 330 obtains the second heat storage mode in accordance with the actual external air conditions, it performs cold water heat storage in the second heat storage mode.

[0166] (Functions and Effects)

[0167] According to this embodiment, the computing device 200 determines the heat storage mode based on a first simulation result showing a first heat storage mode including heat storage implemented by the cooling tower 130 and a second simulation result showing a second heat storage mode including heat storage implemented by the chiller 150. Therefore, the computing device 200 can determine the heat storage mode that matches the environmental conditions with high accuracy based on simulation. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches the environmental conditions.

[0168] Furthermore, according to one example of this embodiment, the first simulation result and the second simulation result respectively include at least one of water injection temperature, heat storage capacity, and power.

[0169] Therefore, by comparing at least one of the water injection temperature, heat storage capacity, and power with a first heat storage mode including heat storage achieved by the cooling tower 130 and a second heat storage mode including heat storage achieved by the chiller 150, the determination unit 250 can appropriately determine the heat storage mode.

[0170] Furthermore, according to one example of this embodiment, the decision unit 250 compares the power required for heat storage in the first heat storage mode with the power required for heat storage in the second heat storage mode. Therefore, the decision unit 250 can select a heat storage mode that requires less power and is more energy-efficient.

[0171] Furthermore, according to an example of this embodiment, the second calculation unit 230 calculates the second simulation result in such that the amount of heat stored in the second heat storage mode is the same as the amount of heat stored in the first heat storage mode. Therefore, by comparing the first heat storage mode and the second heat storage mode with the same amount of heat stored in both modes, the determination unit 250 can select an appropriate heat storage mode.

[0172] Furthermore, according to an example of this embodiment, the determination unit 250 determines one of the first and second heat storage modes in association with each of the plurality of hypothetical external air conditions. In this way, by determining the heat storage mode in association with the hypothetical external air conditions, the geothermal utilization system 1 can operate in an appropriate heat storage mode corresponding to the actual external air conditions during operation.

[0173] Furthermore, according to one example of this embodiment, the hypothetical external air conditions include at least one of hypothetical external air temperature and hypothetical external air humidity.

[0174] Therefore, the geothermal utilization system 1 can operate in an appropriate heat storage mode that corresponds to the actual external air temperature and humidity during operation.

[0175] Furthermore, according to one example of this embodiment, the determination unit 250 selects a second heat storage mode as the heat storage mode when the hypothetical outside air temperature is above the limit outside air temperature.

[0176] Therefore, when the actual external air temperature increases and the water injection temperature increases when cooling based on the cooling tower 130 is performed, the geothermal utilization system 1 uses the heat storage of the chiller 150 instead of cooling based on the cooling tower 130, thereby suppressing the rise in water injection temperature.

[0177] According to the calculation method of this embodiment, the heat storage mode is determined based on the first simulation results and the second simulation results, thereby enabling the determination of a heat storage mode that matches environmental conditions with high accuracy based on simulation. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions.

[0178] According to this embodiment, the control device 300 includes: a mode information storage unit 310 that stores heat storage mode information related to the heat storage mode determined by the computing device 200; and an operation control unit 330 that operates the geothermal utilization system 1 based on the heat storage mode information stored in the mode information storage unit 310.

[0179] Thus, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions and is determined with high precision based on simulations performed by the computing device 200.

[0180] Furthermore, according to one example of this embodiment, the operation control unit 330 establishes a heat storage mode associated with the actual external air conditions obtained by the external air conditions acquisition unit 320, and operates the geothermal utilization system 1.

[0181] Therefore, the geothermal utilization system 1 can be operated with high precision using a heat storage mode that matches environmental conditions, determined by simulations performed by the computing device 200. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions.

[0182] According to the control method in this embodiment, the geothermal utilization system 1 can be operated in a heat storage mode that matches environmental conditions and is determined with high precision based on simulations performed by the computing device 200. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions.

[0183] <Variation Example>

[0184] It should be noted that in the above embodiments, programs for implementing the various functions of the computing device 200 and the control device 300 are recorded on a computer-readable recording medium. The programs recorded on this recording medium are read into a computer system such as a microcomputer and executed to perform various processes. Here, the various processing procedures of the computer system's CPU (Central Processing Unit) are stored in the form of programs on the computer-readable recording medium. The computer reads and executes these programs to perform the aforementioned processes. Furthermore, computer-readable recording media refers to disks, optical disks, CD-ROMs (Compact Disc Read-Only Memory), DVD-ROMs (Digital Video Disc Read Only Memory), semiconductor memory, etc. Alternatively, the computer program can be transmitted to a computer via a communication line, and the receiving computer executes the program.

[0185] In the above embodiments, an example of the hardware configuration of the computer 190 that executes programs for implementing various functions of the computing device 200 and the control device 300 will be described.

[0186] like Figure 9 As shown, the computer 190 of each of the computing device 200 and the control device 300 includes a processor 195, a memory 196, a storage / reproduction device 197, an input / output interface (hereinafter referred to as "IO I / F") 198, and a communication interface (hereinafter referred to as "communication I / F") 199.

[0187] For example, processor 195 can also be a CPU.

[0188] For example, memory 196 may also be a medium such as random access memory (hereinafter referred to as "RAM") that temporarily stores data used in programs executed by computing device 200 and control device 300 respectively.

[0189] For example, the storage / reproduction device 197 may also be a device for storing data, etc., on external media such as CD-ROM, DVD, flash memory, etc., or for reproducing data, etc., on external media.

[0190] For example, IO I / F198 can also be an interface for inputting / outputting information between computing device 200 and other devices, or between control device 300 and other devices.

[0191] For example, the communication I / F199 can also be an interface for communication between the computing device 200 and other devices, or between the control device 300 and other devices, via communication lines such as the Internet or dedicated communication lines.

[0192] <Other Implementation Methods>

[0193] The embodiments of this disclosure have been described above, but these embodiments are shown as examples and are not intended to limit the scope of this disclosure. This embodiment can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of this disclosure. This embodiment and its variations are included within the scope and spirit of this disclosure, as well as within the scope of this disclosure and its equivalents.

[0194] <Postscript>

[0195] For example, the computing device 200, computing method, program, control device 300, control method, and control program described in the implementation method are as follows.

[0196] (1) The computing device 200 of the first scheme determines the heat storage mode when heat storage is performed through the geothermal utilization system 1. The geothermal utilization system 1 includes: a heat source well device 10, which includes a warm water well 21, a cold water well 22, a well-side piping 3 connecting the warm water well 21 and the cold water well 22, and a pump 31 installed on the well-side piping 3; and a heat storage auxiliary device 100, which includes a cooling tower 130, a chiller 150, and a refrigerant circuit 101 connected to at least one of the cooling tower 130 and the chiller 150 and capable of heat exchange with the well-side piping 3. The computing device 200 It comprises: an acquisition unit 210 for acquiring simulation conditions; a first calculation unit 220 for calculating a first simulation result based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage implemented by the cooling tower 130; a second calculation unit 230 for calculating a second simulation result based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage implemented by the chiller 150; and a determination unit 250 for determining either the first heat storage mode or the second heat storage mode based on the first simulation result and the second simulation result.

[0197] The computing device 200 determines the heat storage mode based on first simulation results of a first heat storage mode including heat storage by the cooling tower 130 and second simulation results of a second heat storage mode including heat storage by the chiller 150. Thus, the computing device 200 can determine the heat storage mode that matches the environmental conditions with high precision based on simulation. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches the environmental conditions.

[0198] (2) Alternatively, the computing device 200 of the second scheme is, in the computing device 200 of (1), the first simulation result and the second simulation result respectively include at least one of the injection water temperature of the cold water well 22 from the wellside piping 3 that has exchanged heat with the refrigerant circuit 101, the heat storage on the side of the heat source well equipment 10, and the power required to store heat.

[0199] Therefore, by comparing at least one of the water injection temperature, heat storage capacity, and power with a first heat storage mode including heat storage achieved by the cooling tower 130 and a second heat storage mode including heat storage achieved by the chiller 150, the determination unit 250 can appropriately determine the heat storage mode.

[0200] (3) Alternatively, in the third scheme, the computing device 200 is such that, in the computing device 200 of (1) or (2), the decision unit 250 determines the heat storage mode based on a comparison of the power required for heat storage in the first heat storage mode and the power required for heat storage in the second heat storage mode.

[0201] Therefore, by comparing the power required for heat storage in the first heat storage mode with the power required for heat storage in the second heat storage mode, the decision unit 250 can select a heat storage mode with higher energy efficiency.

[0202] (4) Alternatively, the computing device 200 of the fourth scheme is, in any of the computing devices 200 of (1) to (3), the second computing unit 230 calculates the second simulation result in such that the heat storage in the second heat storage mode is the same as the heat storage in the first heat storage mode.

[0203] Therefore, when the amount of heat stored is the same in the first heat storage mode and the second heat storage mode, the first heat storage mode and the second heat storage mode are compared, and the decision unit 250 can select an appropriate heat storage mode.

[0204] (5) Alternatively, the computing device 200 of the fifth scheme is, in any of the computing devices 200 of (1) to (4), the decision unit 250 determines any one of the first heat storage mode and the second heat storage mode in association with each of the multiple hypothetical external air conditions.

[0205] Thus, by establishing a correlation with hypothetical external air conditions to determine the heat storage mode, the geothermal utilization system 1 can operate in an appropriate heat storage mode corresponding to the actual external air conditions during operation.

[0206] (6) Alternatively, the computing device 200 of the sixth scheme is, in the computing device 200 of (5), the hypothetical external air conditions include at least one of hypothetical external air temperature and hypothetical external air humidity.

[0207] Therefore, the geothermal utilization system 1 can operate in an appropriate heat storage mode that corresponds to the actual external air temperature and humidity during operation.

[0208] (7) Alternatively, the computing device 200 of the seventh scheme is, in the computing device 200 of (6), the computing device further includes: a temperature calculation unit 240, which calculates the limit external air temperature at which the injection temperature of the well-side pipe 3 that has exchanged heat with the refrigerant circuit 101 to the cold water well 22 becomes the upper limit injection temperature, and the determination unit 250 selects the second heat storage mode as the heat storage mode at the hypothetical external air temperature that is above the limit external air temperature.

[0209] Therefore, by selecting the second heat storage mode as the heat storage mode when the water injection temperature is above the upper limit water injection temperature, the geothermal utilization system 1 can perform heat storage using the chiller 150 instead of cooling based on the cooling tower 130 when the actual external air temperature increases and the water injection temperature increases when cooling based on the cooling tower 130 is performed. This can suppress the rise in water injection temperature.

[0210] (8) The calculation method of the eighth scheme determines the heat storage mode when heat storage is carried out through the geothermal utilization system 1. The geothermal utilization system 1 includes: a heat source well device 10, which includes a warm water well 21, a cold water well 22, a well-side pipe 3 connecting the warm water well 21 and the cold water well 22, and a pump 31 installed on the well-side pipe 3; and a heat storage auxiliary device 100, which includes a cooling tower 130, a chiller 150, and a refrigerant connected to at least one of the cooling tower 130 and the chiller 150 and capable of heat exchange with the well-side pipe 3. In loop 101, the calculation method involves obtaining simulation conditions; calculating a first simulation result based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage implemented by the cooling tower 130; calculating a second simulation result based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage implemented by the chiller 150; and determining either the first heat storage mode or the second heat storage mode based on the first simulation result and the second simulation result.

[0211] Therefore, by determining the heat storage mode based on the results of the first and second simulations, a heat storage mode that matches the environmental conditions can be determined with high precision based on simulation. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches the environmental conditions.

[0212] (9) The program of the ninth scheme enables a computer to execute a method for determining the heat storage mode when heat storage is carried out through the geothermal utilization system 1, the geothermal utilization system 1 comprising: a heat source well device 10, comprising a warm water well 21, a cold water well 22, a well-side piping 3 connecting the warm water well 21 and the cold water well 22, and a pump 31 provided on the well-side piping 3; and a heat storage auxiliary device 100, comprising a cooling tower 130, a chiller 150, and at least one of the cooling tower 130 and the chiller 150 connected to the well-side piping 3 and capable of heat exchange with the well-side piping 3. In the method, the refrigerant loop 101 is changed, and simulation conditions are obtained; a first simulation result is calculated based on the simulation conditions, the first simulation result being a simulation result of a first heat storage mode including heat storage implemented by the cooling tower 130; a second simulation result is calculated based on the simulation conditions, the second simulation result being a simulation result of a second heat storage mode including heat storage implemented by the chiller 150; and either the first heat storage mode or the second heat storage mode is determined based on the first simulation result and the second simulation result.

[0213] Therefore, by determining the heat storage mode based on the results of the first and second simulations, a heat storage mode that matches the environmental conditions can be determined with high precision based on simulation. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches the environmental conditions.

[0214] (10) The control device 300 of the tenth scheme includes: a mode information storage unit 310, which stores heat storage mode information related to the heat storage mode determined by the computing device 200 as in (1) to (7); and an operation control unit 330, which operates the geothermal utilization system 1 based on the heat storage mode stored in the mode information storage unit 310.

[0215] Thus, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions and is determined with high precision based on simulations performed by the computing device 200.

[0216] (11) Alternatively, the control device 300 of the eleventh scheme is, in the control device 300 of (10), the control device includes: an external air condition acquisition unit 320 that acquires actual external air conditions, and an operation control unit 330 that operates the geothermal utilization system 1 based on the heat storage mode associated with the actual external air conditions acquired by the external air condition acquisition unit 320.

[0217] Therefore, the geothermal utilization system 1 can be operated with high precision using a heat storage mode that matches environmental conditions, determined by simulations performed by the computing device 200. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions.

[0218] (12) The control method of the twelfth scheme, wherein heat storage mode information related to the heat storage mode determined by the computing device 200 as in any one of (1) to (7) is stored in advance; and the geothermal utilization system 1 is operated based on the stored heat storage mode.

[0219] Therefore, the geothermal utilization system 1 can be operated with high precision using a heat storage mode that matches environmental conditions, determined by simulations performed by the computing device 200. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions.

[0220] (13) The control program of the thirteenth scheme causes the computer to perform the following methods: pre-store heat storage mode information related to the heat storage mode determined by the computing device 200 as in any of (1) to (7); and operate the geothermal utilization system 1 based on the stored heat storage mode.

[0221] Therefore, the geothermal utilization system 1 can be operated with high precision using a heat storage mode that matches environmental conditions, determined by simulations performed by the computing device 200. As a result, the geothermal utilization system 1 can operate in a heat storage mode that matches environmental conditions.

[0222] Explanation of reference numerals in the attached figures

[0223] 1: Geothermal Utilization System

[0224] 2: Well

[0225] 3: Well side piping

[0226] 4: Heat exchanger

[0227] 10: Heat source well equipment

[0228] 21: Warm water well

[0229] 22: Cold water well

[0230] 31: Pump

[0231] 100: Thermal storage auxiliary equipment

[0232] 101: Refrigerant Circuit

[0233] 110: Heat source machine

[0234] 120: Air conditioner

[0235] 130: Cooling Tower

[0236] 140: Second heat exchanger

[0237] 150: Refrigeration unit

[0238] 190: Computer

[0239] 195: Processor

[0240] 196: Memory

[0241] 197: Storage / Reproduction Device

[0242] 198: IO I / F

[0243] 199: Communication I / F

[0244] 200: Computing device

[0245] 210: Acquisition Department

[0246] 220: First Computing Department

[0247] 230: Second Computing Department

[0248] 240: Temperature Calculation Department

[0249] 250: Decision Department

[0250] 300: Control device

[0251] 310: Pattern Information Storage Department

[0252] 320: External Air Condition Acquisition Unit

[0253] 330: Operation Control Department

[0254] ST01: Steps for obtaining simulation conditions

[0255] ST02: Steps for performing simulation calculations under the first thermal storage mode

[0256] ST03: Steps for performing simulation calculations under the second thermal storage mode

[0257] ST04: Steps for comparing the power of the first thermal storage mode with that of the second thermal storage mode

[0258] ST05: Steps for calculating the limiting external air temperature under the first thermal storage mode

[0259] ST06: Steps for determining the heat storage mode

[0260] ST07: Steps for generating thermal storage mode information

[0261] ST11: Steps for obtaining actual outside air conditions

[0262] ST12: Steps for obtaining the thermal storage mode corresponding to actual external air conditions

[0263] ST13: Steps to operate the geothermal utilization system using the obtained heat storage mode.

Claims

1. A computing device for determining a heat storage mode when storing heat through a geothermal utilization system, the geothermal utilization system comprising: a heat source well device having a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump disposed on the well-side piping; and heat storage auxiliary equipment having a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping, wherein... The computing device includes: Acquisition Department, acquire simulation conditions; The first calculation unit calculates a first simulation result based on the simulation conditions. The first simulation result includes the simulation result of a first heat storage mode that includes heat storage achieved by the cooling tower. The second calculation unit calculates a second simulation result based on the simulation conditions. The second simulation result includes the simulation result of a second heat storage mode implemented by the refrigerator. as well as The decision-making unit determines either the first thermal storage mode or the second thermal storage mode based on the first simulation results and the second simulation results. The decision unit establishes an association with each of the multiple hypothetical external air conditions to determine any one of the first heat storage modes and the second heat storage mode.

2. The computing device according to claim 1, wherein, The first simulation result and the second simulation result respectively include at least one of the following: the injection temperature of the cold water well from the wellside piping that has exchanged heat with the refrigerant circuit, the heat storage on the equipment side of the heat source well, and the power required for heat storage.

3. The computing device according to claim 1 or 2, wherein, The decision unit determines the heat storage mode based on a comparison between the power required for heat storage in the first heat storage mode and the power required for heat storage in the second heat storage mode.

4. The computing device according to claim 1 or 2, wherein, The second calculation unit calculates the second simulation result in the same way as the heat storage in the second heat storage mode and the heat storage in the first heat storage mode.

5. The computing device according to claim 1 or 2, wherein, The hypothetical external air conditions include at least one of hypothetical external air temperature and hypothetical external air humidity.

6. The computing device according to claim 5, further comprising: The temperature calculation unit calculates the limiting external air temperature at which the injection temperature from the wellside piping that has exchanged heat with the refrigerant circuit to the cold water well becomes the upper limit injection temperature under the first heat storage mode. The decision unit selects the second heat storage mode as the heat storage mode at a hypothetical external air temperature that is above the limit external air temperature.

7. A calculation method for determining the heat storage mode when storing heat through a geothermal utilization system, the geothermal utilization system comprising: a heat source well device, including a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump installed on the well-side piping; and heat storage auxiliary equipment, including a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping, wherein in the calculation method, Obtain simulation conditions; The first simulation result is calculated based on the simulation conditions. The first simulation result is the result of the simulation of a first heat storage mode including heat storage achieved by the cooling tower. The second simulation result is calculated based on the simulation conditions. The second simulation result is the result of the simulation of a second heat storage mode that includes heat storage implemented by the refrigerator. Based on the first simulation results and the second simulation results, determine either the first thermal storage mode or the second thermal storage mode. In determining the heat storage mode, either the first heat storage mode or the second heat storage mode is determined in association with each of the multiple hypothetical external air conditions.

8. A computer-readable storage medium storing a program for causing a computer to execute a method for determining a heat storage mode when storing heat through a geothermal utilization system, the geothermal utilization system comprising: a heat source well device having a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump disposed on the well-side piping; and heat storage auxiliary equipment having a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping, wherein in the method, Obtain simulation conditions; The first simulation result is calculated based on the simulation conditions. The first simulation result is the result of the simulation of a first heat storage mode including heat storage achieved by the cooling tower. The second simulation result is calculated based on the simulation conditions. The second simulation result is the result of the simulation of a second heat storage mode that includes heat storage implemented by the refrigerator. Based on the first simulation results and the second simulation results, determine either the first thermal storage mode or the second thermal storage mode. In determining the heat storage mode, either the first heat storage mode or the second heat storage mode is determined in association with each of the multiple hypothetical external air conditions.

9. A control device comprising: The mode information storage unit stores heat storage mode information related to the heat storage mode determined by the computing device according to any one of claims 1 to 6; and The operation control unit operates the geothermal utilization system based on the heat storage mode information stored in the mode information storage unit.

10. The control device according to claim 9, comprising: External air condition acquisition unit acquires actual external air conditions. The operation control unit operates the geothermal utilization system by establishing a heat storage mode associated with the hypothetical external air conditions corresponding to the actual external air conditions obtained by the external air conditions acquisition unit.

11. A control method, wherein, Pre-store heat storage mode information related to the heat storage mode determined by the computing device according to any one of claims 1 to 6; The geothermal utilization system is operated based on the stored heat storage mode information.

12. A computer-readable storage medium storing a control program for causing a computer to perform the following methods: Pre-store heat storage mode information related to the heat storage mode determined by the computing device according to any one of claims 1 to 6; The geothermal utilization system is operated based on the stored heat storage mode information.

13. A control device comprising: The mode information storage unit stores heat storage mode information related to the heat storage mode determined by the computing device; External air condition acquisition unit acquires actual external air conditions; as well as The operation control unit operates the geothermal utilization system based on the heat storage mode stored in the mode information storage unit and based on the heat storage mode associated with the actual external air conditions obtained by the external air conditions acquisition unit. The computing device determines the heat storage mode when storing heat through the geothermal utilization system. The geothermal utilization system includes: a heat source well device, comprising a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump installed on the well-side piping; and heat storage auxiliary equipment, comprising a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping. The computing device includes: Acquisition Department, acquire simulation conditions; The first calculation unit calculates a first simulation result based on the simulation conditions. The first simulation result includes the simulation result of a first heat storage mode that includes heat storage achieved by the cooling tower. The second calculation unit calculates a second simulation result based on the simulation conditions. The second simulation result includes a simulation of a second heat storage mode implemented by the refrigerator. The decision-making unit determines either the first heat storage mode or the second heat storage mode based on the first simulation results and the second simulation results.

14. A control method, wherein, Pre-store heat storage mode information related to the heat storage mode determined by the computing device; Obtain actual external air conditions; The geothermal utilization system is operated based on the stored heat storage pattern and the heat storage pattern associated with the acquired actual external air conditions. The computing device determines the heat storage mode when storing heat through the geothermal utilization system. The geothermal utilization system includes: a heat source well device, comprising a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump installed on the well-side piping; and heat storage auxiliary equipment, comprising a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping. The computing device includes: Acquisition Department, acquire simulation conditions; The first calculation unit calculates a first simulation result based on the simulation conditions. The first simulation result includes the simulation result of a first heat storage mode that includes heat storage achieved by the cooling tower. The second calculation unit calculates a second simulation result based on the simulation conditions. The second simulation result includes a simulation of a second heat storage mode implemented by the refrigerator. The decision-making unit determines either the first heat storage mode or the second heat storage mode based on the first simulation results and the second simulation results.

15. A computer-readable storage medium storing a control program for causing a computer to perform the following methods: Pre-store heat storage mode information related to the heat storage mode determined by the computing device; Obtain actual external air conditions; The geothermal utilization system is operated based on the stored heat storage pattern and the heat storage pattern associated with the acquired actual external air conditions. The computing device determines the heat storage mode when storing heat through the geothermal utilization system. The geothermal utilization system includes: a heat source well device, comprising a warm water well, a cold water well, well-side piping connecting the warm water well and the cold water well, and a pump installed on the well-side piping; and heat storage auxiliary equipment, comprising a cooling tower, a chiller, and a refrigerant circuit connected to at least one of the cooling tower and the chiller and capable of heat exchange with the well-side piping. The computing device includes: Acquisition Department, acquire simulation conditions; The first calculation unit calculates a first simulation result based on the simulation conditions. The first simulation result includes the simulation result of a first heat storage mode that includes heat storage achieved by the cooling tower. The second calculation unit calculates a second simulation result based on the simulation conditions. The second simulation result includes a simulation of a second heat storage mode implemented by the refrigerator. The decision-making unit determines either the first heat storage mode or the second heat storage mode based on the first simulation results and the second simulation results.

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