JP2007315621A - Water cooled heat pump type air conditioning heat source device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water cooled heat pump type air conditioning heat source device capable of performing air cooling and heating with high energy saving efficiency even when a water cooled heat pump performing a cooling operation and a water cooled heat pump performing a heating operation are mixed. <P>SOLUTION: This water cooled heat pump type air conditioning heat source device 10 comprises a low temperature-side pipe 31 in which heat source water of low temperature flows, a high temperature-side pipe 32 in which heat source water of high temperature flows, a four-way valve 17 for switching a state of allowing the heat source water to flow from the high temperature-side pipe 32 to the low temperature-side pipe 31 and a state of allowing the heat source water to flow from the low temperature-side piping 31 to the high temperature-side pipe 32 with respect to each water cooled heat pump 13, and a heat balancing means for balancing heat between the high temperature-side pipe 32 and the low temperature-side pipe 31. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water-cooled heat pump air-conditioning heat source apparatus that performs cooling and heating with a water-cooled heat pump, and more particularly to a water-cooled heat pump air-conditioning heat source apparatus having a plurality of water-cooled heat pumps.

  2. Description of the Related Art Conventionally, air-conditioning heat source apparatuses that provide a water-cooled heat pump in a building and perform indoor air conditioning are used. For example, as shown in FIG. 6, such an air conditioning heat source device 100 includes a plurality of water-cooled heat pumps 102, a cooling and heating source device 101 for cooling or heating the heating source water, a heating source device 101, a cooling source device and a heating source device. A supply-side piping 103 that supplies the heat-source water cooled or heated in 101 to the water-cooled heat pump 102, and a discharge-side piping 104 that returns the heat-source water discharged from the water-cooled heat pump 102 to the cold-heat source device and the heat-source device 101 Consists of.

As shown in the figure, in the conventional air-conditioning heat source device 100, heat source water is supplied to a plurality of water-cooled heat pumps 102 through a single supply side pipe 103. For this reason, even when some water-cooling heat pumps 102 are in cooling operation and other water-cooling heat pumps 102 are in heating operation, even when water-cooling heat pumps 102 having different cooling and heating operation states are mixed, the supply-side piping 103 Air conditioning is performed using the supplied heat source water having the same temperature. (For example, see FIG. 3 of Patent Document 1)
Japanese Patent Publication No. 61-5583

  In general, a water-cooled heat pump can be cooled with better energy efficiency as the temperature of the heat source water is lower during cooling operation, and can be heated with higher energy efficiency as the temperature of the heat source water is higher during heating operation. . However, as described above, in the conventional air-conditioning heat source apparatus, even when a water-cooled heat pump for heating operation and a water-cooled heat pump for cooling operation are mixed, the heat source water at the same temperature is used, and the energy for heating operation and cooling operation is used. ineffective.

  In addition, the water-cooled heat pump that is operating for heating discharges low-temperature heat source water after pumping up heat, and the water-cooled heat pump that is operated for cooling discharges high-temperature heat source water after heat is applied. Is done. If low-temperature heat source water can be continuously supplied to a water-cooled heat pump that is operating for cooling, and high-temperature heat source water can be supplied continuously to a water-cooled heat pump that is operating for heating, energy-saving air conditioning can be performed, but conventionally it was discharged from the water-cooled heat pump. The heat source water is mixed in the discharge pipe, and the temperature level of the heat source water cannot be used effectively.

  The present invention has been made in view of the above problems, and its object is to provide a water-cooled heat pump type air conditioner capable of performing air-conditioning with high energy saving efficiency even when a water-cooled heat pump for cooling operation and a water-cooled heat pump for heating operation coexist. It is to provide a heat source device.

  The water-cooled heat pump type air-conditioning heat source device of the present invention is an air-conditioning heat source device having a plurality of water-cooled heat pumps, a low-temperature side pipe through which low-temperature heat source water flows, a high-temperature side pipe through which high-temperature heat source water flows, and each water-cooled heat pump Direction switching means for switching between a state in which heat source water flows from the high temperature side pipe toward the low temperature side pipe and a state in which heat source water flows from the low temperature side pipe to the high temperature side pipe, and the high temperature side pipe And heat balance means for balancing the heat balance with the low temperature side pipe.

  In the above air conditioning heat source device, the heat balance means cools the heat source water of the high temperature side pipe and supplies it to the low temperature side pipe, and heats the heat source water of the low temperature side pipe to heat the heat source water. Low temperature heat source water heating means for supplying to the high temperature side pipe, and control means for controlling the high temperature heat source water cooling means and the low temperature heat source water heating means in accordance with the temperature of the heat source water of the high temperature side pipe and the low temperature side pipe. It may be a thing.

And a temperature detecting means for detecting a temperature of the heat source water flowing through the high temperature side pipe and the low temperature side pipe, and the control means, when the low temperature heat source water heating means is operating, the temperature detecting means. The amount of heat source water heated by the low temperature heat source water heating means is controlled so that the temperature of the heat source water flowing through the high temperature side pipe measured by the above is maintained at a predetermined temperature T _min or more, and the high temperature heat source water cooling means When operating, the heat source water is cooled by the high temperature heat source water cooling means so that the temperature of the heat source water flowing through the low temperature side pipe measured by the temperature detecting means is kept below a predetermined temperature _Tmax. The amount may be controlled.

The low temperature heat source water heating means comprises a heat source device for heating the heat source water, and a heat pump for sending the heat source water flowing through the low temperature side pipe to the high temperature side pipe through the heat source device, The high-temperature heat source water cooling means comprises a cooling heat source device that cools the heat source water, and a cooling heat pump that sends the heat source water flowing through the high-temperature side piping to the low-temperature side piping via the cold heat source device, and the control means When the temperature of the heat source water measured by the temperature detecting means decreases and reaches T _min , the heat pump and the heat source device are operated, and the temperature measured by the temperature detecting means is less than T _min . When the temperature of the heat source water measured by the temperature detecting means rises and reaches T _max when the operating state of the heat source device is controlled so as not to fall below, the cooling pump and the cooling source device are operated. When , The temperature measured by said temperature detecting means so as not to exceed the T _max, may control the operating state of the cold heat source equipment.

  Further, a bypass pipe provided to connect the low temperature side pipe and the high temperature side pipe on the most downstream side with respect to the high temperature heat source water cooling means and the low temperature heat source water heating means, and provided in the bypass pipe And the temperature detecting means comprises a thermometer for measuring the temperature of the heat source water flowing through the bypass pipe, and the control means is configured such that the flow rate measured by the flow meter is a heat source at the thermometer. You may control the flow volume which flows through the said bypass piping so that it may become more than the predetermined flow volume which can measure the temperature of water, for example by adjusting the flow volume of a heat pump or a cold pump.

  According to the present invention, when a water-cooled heat pump for cooling operation and a water-cooled heat pump for heating operation coexist, a high-temperature heat source water given heat in the water-cooled heat pump for cooling operation is used as a heat collection source in the water-cooled heat pump for heating operation. Can be used as Moreover, since the low-temperature heat source water pumped up by the heating operation can be used as the cooling water in the water-cooled heat pump that performs the cooling operation, air-conditioning with high energy saving effect can be performed.

  Hereinafter, one embodiment of an air-conditioning heat source device 10 of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of an air conditioning heat source device 10 of the present embodiment. As shown in the figure, the air conditioning heat source device 10 of this embodiment includes a plurality of water-cooled heat pumps 13, a four-way valve 17 provided corresponding to each water-cooled heat pump 13, a high-temperature side pipe 32, and a low-temperature side pipe 31. And a heat source device 12 and a cold source device 11 provided between the high temperature side pipe 32 and the low temperature side pipe 31, and a control device 16.

The water cooling heat pump 13 uses the heat source water supplied from the supply side pipe 33 to cool and heat the room, and discharges the used heat source water to the discharge side pipe 34. The water-cooled heat pumps 13 can switch their operating states independently, pumping heat from the heat source water during the heating operation, and applying heat to the heat source water during the cooling operation.
Heat source water flows through the high temperature side pipe 32 and the low temperature side pipe 31, and the heat source water flowing through the high temperature side pipe 32 is hotter than the heat source water flowing through the low temperature side pipe 31.

  As shown in FIG. 1, a supply side pipe 33 and a discharge side pipe 34, a low temperature side pipe 31, and a high temperature side pipe 32 of the water cooling heat pump 13 are connected to the four-way valve 17. The four-way valve 17 is configured such that the supply side pipe 33 and the low temperature side pipe 31 are connected, the discharge side pipe 34 and the high temperature side pipe 32 are connected, and the supply side pipe according to the operation state of the water cooling heat pump 13. 33 and the high temperature side pipe 32 are connected, and the state where the discharge side pipe 34 and the low temperature side pipe 31 are connected can be switched.

  The cold heat source device 11 is a device that can cool the heat source water by releasing the heat of the heat source water to the outside of the piping circuit. For example, a cooling tower or the like can be used. A cold pump 21 is attached to the high temperature side pipe 32 connected to the cold heat source device 11, and the heat source water of the high temperature side pipe 32 is supplied to the cold heat source device 11 by operating the cold heat pump 21, and the cold heat source After being cooled by the device 11, it is supplied to the low temperature side pipe 31.

  The heat source device 12 is a device that can heat the heat source water by supplying heat to the heat source water from outside the piping circuit. For example, a boiler or the like can be used. A heat pump 22 is attached to the low temperature side pipe 31 connected to the heat source device 12, and the heat source water of the low temperature side pipe 31 is supplied to the heat source device 12 when the heat pump 22 is operated, After being heated by the source device 12, it is supplied to the high temperature side pipe 32.

  Further, the air conditioning heat source device 10 is a bypass provided to connect the low temperature side pipe 31 and the high temperature side pipe 32 further downstream of the water cooling heat pump on the most downstream side with respect to the cold heat source equipment 11 and the hot heat source equipment 12. A pipe 35 is provided. The bypass pipe 35 is provided with a flow meter 14 and a thermometer 15. As will be described later, when the operation state of the air conditioning heat source device 10 is cooling dominant or only cooling, the cooling pump 21 is operated, and the heat source water flows from the low temperature side pipe 31 to the high temperature side pipe 32 through the bypass pipe 35. Thereby, the temperature measured by the thermometer 15 becomes substantially equal to the temperature of the heat source water in the low temperature side pipe 31. Conversely, when the operation state of the air conditioning heat source device 10 is heating dominant or only heating, the heat pump 22 operates, and thus the heat source water flows from the high temperature side pipe 32 to the low temperature side pipe 31 through the bypass pipe 35. Thereby, the temperature measured by the thermometer 15 becomes substantially equal to the temperature of the heat source water of the high temperature side pipe 32. The flow meter 14 and the thermometer 15 transmit a signal indicating the flow rate and temperature of the heat source water flowing through the measured bypass pipe 35 to the control device 16.

The control device 16 is electrically connected to the cooling pump 21 and the heat pump 22 and can control the operation of the cooling pump 21 and the heating pump 22. In the control device 16, a minimum flow rate F _min of the bypass pipe 35 necessary for measuring the temperature of the heat source water flowing through the bypass pipe 35 with the thermometer 15 is set in advance, and the heat source measured by the flow meter 14 is set. The discharge flow rate of the cold heat pump 21 or the heat pump 22 is controlled so that the water flow rate becomes F _min . As a result, the temperature of the heat source water flowing through the low temperature side pipe 31 or the high temperature side pipe 32 can be measured by the thermometer 15 and the water cooling heat pump 13 that is farthest from the cold heat source device 11 and the hot heat source device 12 is surely required. Temperature heat source water can be supplied.

The control device 16 is electrically connected to the cold heat source device 11 and the heat source device 12, and can control on / off of the operation of the cold heat source device 11 and the heat source device 12, and the amount of cooling and heating. In the control device 16, an upper limit temperature T _max and a lower limit temperature T _min that are determined in advance based on the performance curve of the water-cooled heat pump and the like are set.

As will be described later, when the temperature of the heat source water measured by the thermometer 15 (hereinafter referred to as the measured water temperature T) decreases and reaches T _min , the control device 16 operates the cooling pump 21 and the cooling source device 11. The heat pump 22 and the heat source device 12 are operated, and the heating amount of the heat source water by the heat source device 12 is adjusted so that the measured water temperature T does not become T _min or less. In addition, when the measured water temperature T rises and reaches _Tmax , the control device 16 stops the thermal pump 22 and the thermal source device 12, operates the cold pump 21 and the thermal source device 11, and the measured water temperature T is T _The amount of cooling of the heat source water by the cold heat source device 11 is adjusted so as not to exceed _max .

  Hereinafter, in the operation state of the air conditioning heat source device 10 of the present embodiment, when all the water-cooled heat pumps are in the cooling operation (hereinafter referred to as “all cooling”), the cooling operation and the water-cooling heat pump that performs the heating operation are mixed, and the cooling operation is performed as a whole. Is dominant (hereinafter referred to as cooling superiority), water cooling heat pumps for cooling operation and heating operation are mixed, and heating as a whole is dominant (hereinafter referred to as heating superiority), and all water cooling heat pumps are operated as heating. The case will be described separately (hereinafter referred to as “all heating”).

=== During full cooling ===
FIG. 2 is a diagram illustrating an operation state of the air-conditioning heat source apparatus 10 at the time of full cooling in which the operation state of the water cooling heat pump 13 is all cooling. As shown in the figure, the four-way valves 17 of all the water-cooled heat pumps 13 connect the low temperature side pipe 31 and the supply side pipe 33 and connect the high temperature side pipe 32 and the discharge side pipe 34. Yes. As a result, all the water-cooled heat pumps 13 are supplied with heat source water flowing through the low temperature side pipe 31, and the supplied heat source water is given heat and discharged to the high temperature side pipe 32 at a high temperature.

Therefore, the temperature of the heat source water rises as a whole in the fully cooled state. Therefore, the control device 16 operates the heat source device 11 and the heat pump 21 to control the heat pump 21 so that the flow rate of the bypass pipe 35 flowing from the low temperature side pipe 31 toward the high temperature side pipe 32 becomes F _min. At the same time, the amount of cooling by the cold heat source device 11 is controlled so that the measured water temperature T (that is, the temperature of the heat source water in the low temperature side pipe 31) becomes _Tmax .

When a part of the water-cooled heat pump 13 is changed from the cooling operation to the heating operation in the above-described fully-cooled state, the air-conditioning heat source device 10 is in a cooling dominant state.
=== When cooling is dominant ===
FIG. 3 is a diagram illustrating an operating state of the air-conditioning heat source apparatus 10 when a water-cooling heat pump 13A for cooling operation and a water-cooling heat pump 13B for heating operation are mixed and cooling is dominant. As shown in the figure, at the time of full cooling, the four-way valve 17B of the water-cooled heat pump 13B that is heating is connected to the high-temperature side pipe 32B and the supply-side pipe 33B of the water-cooled heat pump 13B, and the low-temperature side pipe 31B and water-cooled The four-way valve 17A of the water-cooled heat pump 13A that is in cooling operation is connected to the low-temperature side pipe 31A and the supply-side pipe 33A of the water-cooled heat pump 13A. The high temperature side pipe 32A and the discharge side pipe 34A of the water-cooled heat pump 13A are connected.

The heat-source water flowing through the low-temperature side pipe 31 is supplied to the water-cooled heat pump 13A that is performing the cooling operation. The supplied heat-source water is given heat and discharged to the high-temperature side pipe 32 at a high temperature.
In addition, the heat source water flowing through the high temperature side pipe 32 is supplied to the water-cooled heat pump 13B that is performing the heating operation, and the supplied heat source water is pumped up and discharged to the low temperature side pipe 31 at a low temperature.

Similarly to the case of all cooling, the cooling pump 21 is controlled so that the flow rate measured by the flow meter 14 becomes _Fmin, and the cooling source device 11 is cooled so that the measured water temperature T becomes _Tmax. Control the amount. However, when cooling is dominant, the amount of cooling of the cooling heat source device 11 is smaller than the amount of cooling, and the temperature of the heat source water in the low-temperature side pipe 31 is T by the amount that the water cooling heat pump 13B that performs heating pumps heat from the heat source water. _{When the} temperature is lower than _max, cooling by the cold heat source device 11 becomes unnecessary. Therefore, the control device 16 stops the cold heat source device 11 when the measured water temperature T falls below _Tmax .

  Thus, according to the air-conditioning heat source device 10 of the present embodiment, the heat source water given heat in the water-cooled heat pump 13A that performs the cooling operation can be used in the water-cooled heat pump 13B that performs the heating operation, and the heating operation is performed. Since the heat source water pumped up by the water-cooled heat pump 13B can be used in the water-cooled heat pump 13A that performs cooling operation, air-conditioning with high energy saving efficiency can be performed.

When the number of water-cooled heat pumps 13 that perform heating operation further increases after the cold-heat source device 11 stops, the temperature of the heat-source water decreases. As described above, when the measured water temperature T reaches T _min after the cold heat source device 11 is stopped, the control device 16 determines that the operation state of the air conditioning heat source device 10 has changed to heating predominance, and will be described later. Transition to the control state at the time of dominance.

=== When heating is dominant ===
FIG. 4 is a diagram showing the air-conditioning heat source apparatus 10 when a water-cooled heat pump 13A for cooling operation and a water-cooled heat pump 13B for heating operation are mixed and heating is dominant. As shown in the figure, the four-way valve 17B of the water-cooled heat pump 13B that is heating is connected to the high-temperature side pipe 32B and the supply-side pipe 33B of the water-cooled heat pump 13B, and the low-temperature side pipe 31B and the water-cooled heat pump 13B. The four-way valve 17A of the water-cooled heat pump 13A that is in the cooling operation is connected to the discharge-side pipe 34B, and the low-temperature side pipe 31A and the supply-side pipe 33A are connected to the high-temperature side pipe 32A. The discharge side pipe 34A is connected.

When the operation state of the air conditioning heat source device 10 is heating dominant, the total amount of heat pumped up from the heat source water in the water-cooled heat pump 13B performing heating operation exceeds the total amount of heat given to the heat source water in the water-cooled heat pump 13A performing cooling operation. The temperature of the water decreases overall. When the temperature of the heat source water decreases and the measured water temperature T reaches T _min , the control device 16 stops the heat source device 11 and the heat pump 21 and activates the heat source device 12 and the heat pump 22. At this time, the operation of the heat pump 22 is controlled so that the flow rate of the heat source water flowing through the bypass pipe 35 from the high temperature side pipe 32 to the low temperature side pipe 31 becomes F _min , so that the bypass pipe 35 has a high temperature side pipe. Since the heat source water flows from the 32 side, the measured water temperature T is substantially equal to the temperature of the heat source water in the high temperature side pipe 32. The control device 16 controls the heating amount of the heat source device 12 so that the measured water temperature T maintains T _min .

  As described above, according to the air-conditioning heat source device 10 of the present embodiment, the heat source water pumped up by the water-cooled heat pump 13B that performs heating operation can be used in the water-cooled heat pump 13A that performs cooling operation. Since the heat source water given heat in the water-cooling heat pump 13A can be used in the water-cooling heat pump 13B that performs heating operation, air-conditioning with higher energy saving efficiency can be performed.

Incidentally, during the heating dominant, if the measured temperature T exceeds the rise to T _min, since the heat of the heat source water by hot heat source 12 is not necessary, in which case the control unit 16 hot heat source 12 Stop.

If the number of water-cooled heat pumps 13 that perform cooling operation further increases after the heat source device 12 stops, the temperature of the heat source water increases. As described above, when the measured water temperature T reaches _Tmax after the heat source device 12 is stopped, the control device 16 determines that the operation state of the air conditioning heat source device 10 has changed to the above-described cooling dominant state. Then, the control state shifts to the cooling dominant state. Further, when all the water-cooled heat pumps 13 are in the heating operation, the control state shifts to a control state at the time of all heating described later.

=== Fully heating ===
FIG. 5 is a diagram illustrating an operation state of the air-conditioning heat source device 10 when the operation state of the water-cooled heat pump 13 is all heating. As shown in the figure, during all heating, the four-way valves 17 of all the water-cooled heat pumps 13 connect the high temperature side pipe 32 and the supply side pipe 33 and connect the low temperature side pipe 31 and the discharge side pipe 34. It has become. Thereby, the heat source water flowing through the high temperature side pipe 32 is supplied to all the water cooling heat pumps 13, and the supplied heat source water is pumped up and discharged to the low temperature side pipe 31 at a low temperature.

Therefore, in the state of all heating, the temperature of the heat source water decreases as a whole. Therefore, the control device 16 operates the heat source device 12 and the heat pump 22, and the heat pump 22 so that the flow rate of the heat source water flowing through the bypass pipe 35 from the high temperature side pipe 32 to the low temperature side pipe 31 becomes _Fmin. controls the flow rate, the measured temperature T (i.e., temperature of the heat source water in the high temperature-side pipe 32) so as to maintain the minimum temperature T _min, to control the heating amount of the heat source equipment 12.

  As described above, according to the air-conditioning heat source device 10 of the present embodiment, when the water-cooled heat pump 13B that performs heating operation and the water-cooled heat pump 13A that performs cooling operation coexist, heat is given to the water-cooled heat pump 13A that performs cooling operation. The heat source water can be used in the water-cooled heat pump 13B for heating operation, and the heat source water pumped up by the water-cooled heat pump 13B for heating operation can be used in the water-cooled heat pump 13A for cooling operation. Air conditioning with high energy saving efficiency can be performed.

Further, the bypass pipe 35 is arranged at the most downstream position with respect to the cold heat source device 11 and the heat source device 12, and the bypass pipe 35 is provided with a flow meter 14 and a thermometer 15, and the flow rate of the bypass pipe 35 is F _min . By controlling the heat pump 21 or the heat pump 22 so as to be, the temperature of the heat source water of the low temperature side pipe 31 or the high temperature side pipe 32 can be reliably measured by the thermometer 15. That is, when the thermometer is provided in the low temperature side pipe 31 and the high temperature side pipe 32, the flow of heat source water that passes through the thermometer is generated if there is no water-cooled heat pump in the operation state downstream of the thermometer. Therefore, the water temperature of the heat source water cannot be measured appropriately. On the other hand, in this embodiment, the water temperature of the heat source water of the low temperature side pipe 31 or the high temperature side pipe 32 is generated by forcibly generating the flow of the heat source water passing through the bypass pipe 35 by the cold heat pump 21 or the heat pump 22. Since the bypass pipe 35 is arranged at the most downstream position, the temperature condition is the most severe (that is, the temperature is highest in the low temperature side pipe 31 and lowest in the high temperature side pipe 32). ) Temperature of the heat source water in the state can be measured.

  In the above description, the four-way valve 17 is used to connect the low temperature side pipe 31 and the supply side pipe 33, and also connect the high temperature side pipe 32 and the discharge side pipe 34, and the high temperature side pipe. 32 and the supply side pipe 33 are connected, and the low temperature side pipe 31 and the discharge side pipe 34 are connected to each other. However, the present invention is not limited to this, and a three-way valve or a two-way valve is used. You can also.

It is a figure which shows the structure of the air-conditioning heat-source apparatus of this embodiment meter form. It is a figure which shows the air-conditioning heat-source apparatus at the time of all the cooling. It is a figure which shows the air-conditioning heat-source apparatus at the time of cooling predominance. It is a figure which shows the air-conditioning heat-source apparatus at the time of heating predominance. It is a figure which shows the air-conditioning heat-source apparatus at the time of all the heating. It is a figure which shows the structure of the conventional air-conditioning heat-source apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air-conditioning heat source apparatus 11 Cold heat source apparatus 12 Heat source apparatus 13 Water-cooled heat pump 13A, 13B Water-cooled heat pump 14 Flowmeter 15 Thermometer 16 Controller 17A, 17B Four-way valve 21 Cold-heat pump 22 Heat pump 23A, 23B Pump 31, 31A, 31B Low temperature Side piping 32, 32A, 32B High temperature side piping 33A, 33B Supply side piping 34A, 34B Discharge side piping 35 Bypass piping

Claims (5)

An air conditioning heat source device including a plurality of water-cooled heat pumps,
Low temperature side piping through which low temperature heat source water flows,
High temperature side piping through which high temperature heat source water flows,
For each water-cooled heat pump, direction switching means for switching between a state where heat source water flows from the high temperature side pipe toward the low temperature side pipe and a state where heat source water flows from the low temperature side pipe toward the high temperature side pipe;
A water-cooled heat pump type air conditioning heat source device, comprising: heat balance means for balancing the heat balance between the high temperature side pipe and the low temperature side pipe. The heat balance means includes
High temperature heat source water cooling means for cooling the heat source water of the high temperature side pipe and supplying it to the low temperature side pipe;
Low temperature heat source water heating means for heating the heat source water of the low temperature side pipe and supplying the heat source water to the high temperature side pipe;
The water-cooled heat pump system according to claim 1, further comprising a control means for controlling the high-temperature heat source water cooling means and the low-temperature heat source water heating means in accordance with the temperature of the heat source water in the high temperature side pipe and the low temperature side pipe. Air conditioning heat source device. The air conditioning heat source device according to claim 2,
Temperature detecting means for detecting the temperature of the heat source water flowing through the high temperature side pipe and the low temperature side pipe;
The control means includes
When the low temperature heat source water heating means is operating, the temperature of the heat source water flowing through the high temperature side pipe measured by the temperature detection means is maintained at a predetermined temperature _Tmin or higher. Control the heating amount of the heat source water by the heating means,
When the high temperature heat source water cooling means is operating, the temperature of the heat source water flowing through the low temperature side pipe measured by the temperature detection means is maintained at a predetermined temperature T _max or less. A water-cooled heat pump type air-conditioning heat source apparatus, wherein the cooling amount of the heat source water by the cooling means is controlled. An air conditioning heat source device according to claim 3,
The low temperature heat source water heating means includes:
A heat source device that heats the heat source water, and a heat pump that sends the heat source water flowing through the low temperature side pipe to the high temperature side pipe through the heat source device, and
The high-temperature heat source water cooling means is
A cooling heat source device that cools the heat source water, and a cooling heat pump that sends the heat source water flowing through the high temperature side piping to the low temperature side piping through the cooling heat source device,
The control means includes
When the temperature of the heat source water measured by the temperature detection means decreases and reaches T _min , the heat pump and the heat source device are operated, and the temperature measured by the temperature detection means does not fall below T _min . So as to control the operating state of the heat source device,
When the temperature of the heat source water measured by the temperature detection means rises and reaches T _max , the cooling pump and the cooling heat source device are operated, and the temperature measured by the temperature detection means does not exceed T _max . As described above, a water-cooled heat pump type air-conditioning heat source device that controls the operating state of the cold-heat source device. The air conditioning heat source device according to claim 3 or 4,
A bypass pipe provided to connect the low temperature side pipe and the high temperature side pipe on the most downstream side with respect to the high temperature heat source water cooling means and the low temperature heat source water heating means,
A flow meter provided in the bypass pipe,
The temperature detection means comprises a thermometer that measures the temperature of the heat source water flowing through the bypass pipe,
The control means controls the flow rate flowing through the bypass pipe so that the flow rate measured by the flow meter is equal to or higher than a predetermined flow rate at which the temperature of the heat source water can be measured by the thermometer. A water-cooled heat pump air conditioning heat source device.