JPH04198673A - Heat pump utilizing waste heat of turbine condenser - Google Patents

Abstract

PURPOSE:To permit the taking-out of high-temperature hot-water through a condenser by a method wherein a heat pipe is provided with a bypass heat source water pipeline for sending heat source water to an evaporator bypassing a heat exchanger for heating the heat source water through heat exchange between cooling water discharged out of a condenser. CONSTITUTION:A heat pump is provided with a heat pump, having an evaporator 1, through which heat source water is conducted, the condenser 21 of a condensed water turbine 20, which conducts cooling water which can not be mixed with the heat source water since the quality, purity and the like are different from the heat source water, a heat exchanger 30, provided at the fore stage of the evaporator 1 and effecting heat exchange between the discharging cooling water discharged from the condenser 21 with a high temperature difference between temperatures at the inlet port and the outlet port thereof, and a bypass heat source water pipeline 45 for sending the heat source water to the evaporator 1 while bypassing the heat exchanger 30. The cooling water discharged out of the condenser 21 of a condensed water turbine 20 is heated to a temperature having a temperature difference larger than the normal temperature difference between the inlet port and the outlet port of the cooling water flowing through the condenser 21 while the heat source water, flowing through the evaporator 1, is heated utilizing the waste heat of the high-temperature discharging cooling water to obtain high-temperature hot-water from the condenser 4 and utilize it for heating.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a refrigerating machine that obtains high-temperature hot water for heating by using the exhaust heat of cooling water discharged from a condenser of a condensing turbine. Regarding the heat pump used.

[Conventional technology]

Refrigerators, which are also used as heat pumps, cool the refrigerant in the condenser into a liquid using cooling water from a cooling tower etc. in the summer, and evaporate this refrigerant in an evaporator to generate hot water supplied by the evaporator. It is used as cold water for air conditioning, and in the winter, heat is taken from the heat source water by evaporation of the refrigerant in the evaporator, and the evaporated refrigerant vapor is condensed in the condenser to give heat to the supplied cold water. The hot water is obtained and used for heating.

An absorption refrigerator shown in FIG. 2 is known as such a refrigerator. In Figure 2, the absorption refrigerator is 1
IN generator 1, absorber 2. The apparatus consists of a regenerator 3 and a condenser 4, and the entire apparatus is maintained at a pressure below atmospheric pressure, and each vessel has a built-in heat exchanger tube.

The action of an absorption refrigerator with such a configuration is as follows. First, the function of obtaining hot water for the winter Il room will be explained. The refrigerant consisting of water that remains in the lower part of the evaporator 1, which is in a high vacuum, is sprayed into the vessel by the refrigerant sprayer 7 by the pump 6, and the refrigerant consisting of water that remains in the lower part of the condenser 4 is distributed to the evaporator 1. The refrigerant is evaporated at a vaporization temperature corresponding to the high vacuum pressure of the evaporator L. At this time, the heat of vaporization is taken away from the heat source water flowing through the heat transfer tubes 8, so that the heat source water becomes low temperature and is discharged to the outside.

The refrigerant vapor in the evaporator 1 is sent to the absorber 2, is absorbed by the solution sent from the regenerator 3 to the absorber 2, and flows down while being cooled by the cooling water flowing through the heat transfer tube 9. It is quickly absorbed into the body. The absorbed heat generated during absorption is taken away by the cooling water flowing through the heat transfer tubes 9, and the temperature of the cooling water is reduced. It absorbs refrigerant vapor and becomes diluted.
The solution stays at the bottom. The solution staying in this lower part is heated in a heat exchanger 11 by a pump 12 and then sent to a rehabitator 3. The solution remaining in the lower part of the regenerator 3 is heated by the steam flowing through the heat transfer tube 13, and the solution evaporates to generate refrigerant vapor and is concentrated. This refrigerant vapor is sent to the II condenser 4, cooled and condensed by the cooling water flowing through the heat exchanger tubes 14 through the heat exchanger tubes 9, and becomes refrigerant water, which is retained in the lower part. At this time, the cooling water flowing through the heat transfer tubes 14 removes condensation heat from the refrigerant, raises its temperature, and is discharged to the outside. The refrigerant remaining in the lower part of the astit unit 4 is sent to the evaporator 1 as described above.

In this way, the cooling water flowing through the heat transfer tubes 9.14 absorbs B
2 removes absorption heat, and further refrigerant vapor ii in condenser 4
The condensed heat is removed and the water becomes high-temperature, which is used for heating.

When using an absorption refrigerator for cooling in the summer, the absorber 2. By flowing cooling water through the heat transfer tubes 9 and 14 of the condenser 4, the refrigerant vapor from the regenerator 3 is cooled and condensed in the condenser 4, and the condensed refrigerant is vaporized in the evaporator 1.

At this time, the cooling water flowing through the heat exchanger tubes 8 is deprived of vaporization heat, becomes cold water, and is discharged to the outside. Note that the refrigerant vapor generated in the evaporator 1 is absorbed by the solution in the absorber 2, and the absorbed solution is sent to the regenerator 3 as described above to generate refrigerant vapor.

The cold water obtained as described above is used for cooling.

[Wfi to be solved by the invention] When using the above-mentioned refrigerator as a heat pump,
i [The temperature of medical hot water obtained from the condenser is controlled by the temperature of the heat source water flowing through the evaporator, and if the temperature of this heat source water is low, the temperature of the hot water obtained will be low. Therefore, in order to obtain hot water at a sufficient temperature during winter, the temperature of the heat source water flowing through the evaporator needs to be high.

By the way, the present applicant has combined the above-mentioned refrigerator as a heat pump with a water turbine that generates electricity by driving a condensation turbine equipped with a condenser with 1 air from a waste incinerator boiler and generates electricity using the generated tSt. We focused on the fact that hot water at a temperature sufficient for winter can be obtained from the heat pump by increasing the temperature of the discharged cooling water discharged from the heat pump to a temperature higher than normal and supplying the heat source water to the de-evaporator which heated the heat source water using the exhaust heat. At this time, in thermal power plants, the difference in temperature between the inlet and outlet between the temperature of the discharged cooling water discharged from the condenser to the outside and the temperature of the inlet cooling water flowing into the condenser must be 7 degrees Celsius or less due to environmental and ecological considerations. It is necessary to adhere to this standard value.

An object of the present invention is to raise the temperature of heat source water by the exhaust heat of exhaust cooling water discharged from a condenser of a condensing turbine, and then flow it to an evaporator to extract high-temperature hot water through an il condenser. and the temperature of the inlet cooling water flowing into the condenser and the temperature of the discharged cooling water discharged to the outside area after utilizing the exhaust heat of the discharged cooling water discharged from the condenser, It is an object of the present invention to provide a heat pump that utilizes waste heat from a turbine condenser and is capable of reducing an outlet temperature difference below a regulation value.

[Means to solve the problem]

In order to solve the above problems, according to the present invention, there is provided a bomb having an evaporator through which heat source water flows;
It is installed in the front stage of the condenser of the condensing turbine and the evaporator, through which cooling water that cannot be mixed with the heat source water flows due to the difference in cleanliness etc., and increases the temperature difference between the inlet and outlet of the cooling water from the condenser. The turbine condenser is equipped with a heat exchanger that heats the heat source water by exchanging heat with the discharged cooling water discharged from the turbine, and a bypass heat source water piping that bypasses this heat exchanger and sends the heat source water to the evaporator. A heat pump that utilizes waste heat is configured. In addition, there is a water turbine condenser that has an evaporator through which heat source water flows, a water-covered turbine condenser through which cooling water that can be mixed with the heat source water because the water quality and cleanliness are similar to the heat source water, and Cooling water inlet from the condenser.

A cooling water pipe that takes out discharged cooling water with a large outlet temperature difference and guides it to the evaporator as heat source water constitutes a turbine condenser exhaust heat utilization pump.

In addition, in a heat pump that uses waste heat from a turbine condenser when the heat source water and cooling water cannot be mixed, the inlet cooling water piping for the cooling water flowing into the condenser and the heat exchanger after being discharged from the condenser are used. a first bypass cooling water pipe connected to the cooling water outlet cooling water pipe flowing therethrough and having a first flow rate regulating valve; a cooling water outlet of the condenser and a cooling water inlet of the heat exchanger; An IJ2 bypass cooling water pipe connected to the intermediate cooling water pipe and the outlet cooling water pipe and equipped with a second flow rate regulating valve is provided.

Further, in the heat pump that utilizes waste heat from a turbine condenser in a case where the heat source water and the cooling water can be mixed, a pipe provided in the outlet cooling water pipe for discharging the exhaust cooling water discharged from the condenser to an outside area is provided. 3 flow rate adjustment valve and the third flow rate 11! of the cold water discharged from the evaporator! A mixed cooling water pipe provided with a fourth flow rate regulating valve leading to the outlet cooling water pipe downstream of the I valve shall be provided.

[Effect]

The exhaust cooling water discharged from the condenser of the condensing turbine is heated to a temperature that develops a temperature difference greater than the normal inlet and outlet temperature difference of cooling water flowing through the condenser, and this high temperature discharge is The exhaust heat of the cooling water is used to raise the temperature of the heat source water flowing through the evaporator, and high-temperature hot water is obtained from the condenser and used for heating. At this time, the cooling water and heat source water may not be able to mix because they have different water quality, 1*purity, etc., or they may be able to mix because they are of the same quality.
The operation of the means for dealing with this mixing possibility is as follows.

If heat source water and cooling water cannot be mixed, raise the temperature of the discharged cooling water discharged from the condenser to a temperature higher than the normal value, for example, by increasing the temperature difference between the inlet and outlet of the condenser. death,
This high-temperature discharged cooling water is exchanged with heat source water supplied to the evaporator in a heat exchanger to raise the temperature of the heat source water, and then supplied to the evaporator to obtain high-temperature hot water for heating from the condenser. It will be done. At this time, the discharged cooling water is cooled by heat exchange and discharged from the heat exchanger, so the inlet and outlet temperatures of the inlet cooling water that flows into the condenser and the outlet cooling water that passes through the heat exchanger and is discharged to the outside area. The difference can be kept below the regulatory value.

During the summer, when performing air conditioning, the heat source water supplied to the evaporator is passed through the bypass cooling water pipe without passing through the heat exchanger, thereby obtaining sufficient cold water for cooling.

In addition, when performing the above-mentioned winter heating, the temperature of the inlet cooling water flowing into the condenser is determined by adjusting the flow rate of the outlet cooling water discharged from the heat exchanger by the first flow rate mw valve li! ! ! The heat exchanger is mixed with the inlet cooling water of the condenser through the first bypass cooling water pipe to adjust the heat exchanger load. The flow rate is adjusted by a regulating valve and mixed with the outlet cooling water discharged from the heat exchanger via the second bypass cooling water pipe.

On the other hand, if the heat source water and cooling water can be mixed, the temperature of the discharged cooling water discharged from the condenser is raised to below the regulation value for the temperature difference between the inlet and outlet of the cooling water, and the discharged cooling water is taken out. Supplied to the evaporator via cooling water piping. In this case, since no heat exchanger is used, there is no heat loss due to the heat exchanger, and therefore the heat source water, which is discharged cooling water, is at a high temperature, and therefore high temperature hot water for space heating is obtained from the condenser. In this gap, the temperature of the cooling water discharged from the condenser is raised to below the regulation value for the temperature difference between the inlet and outlet of the cooling water, so the temperature at the inlet and outlet of the cooling water discharged to the outside area via the outlet cooling water piping. The difference can be kept below the regulatory value.

When performing summer cooling, the condenser and heat pump are separated by cutting off the flow of cooling water or cold water to the cooling water piping that leads the discharged cooling water from the condenser to the evaporator or the mixed cooling water piping. The heat pump is operated to obtain cold water for air conditioning.

In addition, when performing the above-mentioned Il room, corresponding to the heating load,
The amount of cooling water discharged from the condenser to be supplied to the evaporator is regulated by the third flow rate regulating valve. In addition, in the event that the temperature of the cooling water discharged from the condenser rises above the regulation value for the temperature difference between the input and output of cooling water, mix the cold water discharged from the first generator and disconnect the cooling water piping. By mixing it with the discharged cooling water, the temperature difference between the inlet 1 and the outlet between the inlet cooling water flowing into the condenser and the discharged cooling water discharged to the outside can be suppressed to below the regulation value.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a system diagram of a heat pump using an absorption refrigerator that utilizes waste heat from a turbine condenser according to an embodiment of the present invention.

In FIG. 1 and FIG. 2, which will be described later, the same parts as those in FIG. 3 are given the same reference numerals, and their explanations will be omitted. In FIG. 1, a double water turbine 20 is equipped with a condenser 21 and has a
22 are connected. The condensing turbine 20 is connected to a waste incinerator boiler 23 via a steam supply system 24 to which steam is supplied. The heat exchanger tube 13 of the regenerator 3 of the absorption refrigeration unit 1110 is connected to an extracted steam pipe 25 through which extracted steam from the condensing turbine 20 flows.

Condensing! 1i21 has a built-in heat transfer tube 26 through which cooling water made of treated sewage water flows, and this heat transfer tube 26 has an inlet cooling water pipe 28 equipped with a cooling water pump 27 that sends cooling water to the heat transfer tube 26, and a heat transfer tube 26. 26 to an intermediate cooling water pipe 33 that sends cooling water to the heat exchanger 30.

The heat exchanger 30 includes a heat transfer tube 32, one end of the heat transfer tube 32 is connected to an intermediate cooling water pipe 33, and the other end of the heat transfer tube 32 is connected to an outlet cooling water pipe 29. It is being In addition, the inlet cooling water pipe 28 and the outlet cooling water pipe 29
A first bypass cooling water pipe 36 is connected to the first bypass cooling water pipe 36 and has a first flow rate adjustment valve 35, and a second flow rate adjustment valve 37 is connected to the intermediate cooling water pipe 33 and the outlet cooling water pipe 29. A second bypass cooling water pipe 38 is provided.

The heat exchanger 30 also includes a heat source water inlet pipe 42 and a heat exchanger for sending heat source water, which is mainly clean water that cannot be mixed with treated sewage water from a cold/hot water tank 40, to the heat exchanger 30 by a pump 41. The heat source water heated by heat exchange in step 30 is absorbed and frozen 11
Heat source water outlet piping 4 that supplies heat exchanger tubes 8 of 10 evaporators 1
3 are connected. Further, a bypass heat source water pipe 45 is provided which bypasses the heat exchanger 30 and connects to the heat source water inlet pipe 42 and the heat source water outlet pipe 43 and includes a valve 44 .

The heat transfer tube 8 of the evaporator 1 is used to cool and cool the cold water that will be discharged.
A cold water discharge pipe 46 that supplies water to the hot water tank 40 is connected. Note that 47 is a cooling water inlet pipe connected to the heat exchanger tube 9 of the absorber 2, and 48 is a hot water outlet pipe connected to the heat exchanger tube 14 of the condenser 4.

50 is a cold water supply pipe that supplies the cold water discharged from the summer evaporator 1 to the process, and 51 is a hot water return pipe that returns hot water heated by cooling in the process to the cold/hot water tank 40. Note that the cooling water inlet pipe 47 connected to the heat transfer tube 9 of the absorber 2. The hot water outlet pipe 4B connected to the heat transfer tube 14 of the condenser 1M14 becomes a pipe through which cooling water for obtaining cold water from the summer evaporator 1 flows in and out.

The operation of performing winter heating with such a configuration will be explained. Valve 44. The boiler 23 is operated with the first flow rate adjustment valve 35 and the second flow rate adjustment valve 37 closed.
The steam generated in is supplied to the condensing turbine 20 to drive the condensing turbine, the generator 22 generates electricity, and supplies electric power to the load. Exhaust steam from the condensing turbine 20 is guided to the condenser 21. At this time, the extracted steam from the condensing turbine 20 flows through the extracted steam pipe 25 and the heat transfer tube 13 of the regenerator 3, and heats the solution in the regenerator 3 as described above.

The exhaust steam of the condensing turbine 20 led to the condenser 21 is
The cooling water flowing through the heat transfer tubes 26 of the condenser 21 via the inlet cooling water pipe 28 by the cooling water pump 27 is used to cool and condense the water into condensate. At this time, the cooling water removes the heat of condensation when the exhaust steam is covered with water, becomes high in temperature, and flows through the intermediate cooling water pipe 33 to the heat transfer tube 32 of the heat exchanger 30.

On the other hand, heat source water mainly consisting of tap water from the cold/hot water tank 40 is passed through the heat source water inlet pipe 42 by a pump 41 to the heat exchanger 3.
0, flows through the heat transfer tube 32, exchanges heat with the high temperature discharged cooling water discharged from the condenser 21, raises the temperature, and flows into the heat transfer tube 8 of the evaporator 1 via the heat source water outlet pipe 43. The water is then cooled by the above-described action of the evaporator 1 and flows into the cold/hot water tank 40 via the cold water discharge pipe 46.

Heat exchange! Condenser 21 cooled by heat exchange in S30
The discharged cooling water discharged from the cooling water becomes low temperature and is discharged to the outside area through the outlet cooling water pipe 29.

On the other hand, the cooling water inlet pipe 4 is returned from the process to be heated.
The low-temperature cooling water flowing into the absorber 2 via the absorber 2.
The water flows through the heat exchanger tubes 9.14 of the H-condenser 4, reaches a high temperature due to the above-mentioned action, and is supplied to the process to be heated via the hot water outlet pipe 48.

An example of the temperature of cooling water, heat source water, etc. flowing through each device during winter heating is as follows. After the 14°C inlet cooling water flows through the heat exchanger tubes 26 of the condenser 21, it becomes 24°C cooling water and flows into the heat exchanger tubes 26 of the heat exchanger 30, and the outlet cooling water undergoes heat exchange with the heat exchanger tubes 26. becomes 19° C. and is discharged from the heat exchanger 30 to the outside area.

On the other hand, the 15°C heat source water from the cold/hot water tank 40 is heated to 21°C in the heat exchanger 30 and flows into the evaporator 1, where it is cooled to a low temperature in the evaporator 1 and becomes 15°C cold water. and returns to the cold/hot water tank. Also, the heating process should return about 40℃
The cooling water is absorbed by absorber 2. The temperature of the water is raised in the condenser 4 to become hot water of approximately 50° C., which is then supplied to the process to be heated.

Here, the inlet cooling water flowing into the condenser 21 and heat exchange JI3
Inlet with outlet cooling water discharged from 0 to the outside area.

The outlet temperature difference is (19-15)t-4°C, which is smaller than the regulation value 7.

Note that when the load on the heat exchanger 30 changes, the opening degree of the second flow rate regulating valve 37 of the second bypass cooling water pipe 38 is adjusted to adjust the amount of cooling water flowing into the heat exchanger 3o.

Moreover, when the temperature of the inlet cooling water of the condenser 21 is low,
First flow rate adjustment valve 35 of first bypass cooling water pipe 36
The temperature of the inlet cooling water can be adjusted by adjusting the opening degree of the heat exchanger 3o and mixing a portion of the high temperature outlet cooling water discharged from the heat exchanger 3o.

In the above case, the outlet temperature of the cooling water of the condenser is set to 10℃.
The temperature of the cooling water increases and flows into the heat exchanger, which exchanges heat with the temperature of the cooling water. This can be easily achieved by planning the heat transfer area.

Next, the function of the absorption refrigerator when performing summer cooling will be explained. In this case, the bypass heat source water pipe 45 bypasses the heat exchanger 3o without operating the heat exchanger 3o.
is used with valve 44 open. That is, high-temperature return hot water from the process to be cooled is sent to the cold/hot water 140 via the hot water return piping 51, and from this tank to the bypass heat source water piping 45.
The water is sent to the heat transfer tube 8 of the evaporator 1 through the cooling water inlet pipe 47, and the cooling water is sent to the absorber 2 through the cooling water inlet pipe 47. Heat exchanger tube 8 of condenser 4.
14 and discharged through the hot water outlet pipe 48, the low-temperature cold water that has been cooled from the evaporator 1 is discharged from the evaporator 1 by the above-mentioned action and flows into the cold/hot water tank 40 through the cold water discharge pipe 46. This oak is supplied to the process to be cooled through a cold water supply pipe 50 for cooling purposes.

In this case, the temperature of the cold water obtained from the evaporator 1 is 7°C.

Figure 2 shows a case where the heat source water flowing through the evaporator 1 and the cooling water flowing through the condenser 21 can be mixed, because the water quality and cleanliness are the same. Turbine condensate 5II
It is a system diagram of a heat pump using P heat. In FIG. 2, the heat exchanger 30 in FIG. 1 is replaced, and the intermediate cooling water pipe 33 is
is connected to a heat source water inlet pipe 57 equipped with a valve 58 for sending heat source water from the cold/hot water tank 40 to the evaporator II, with a valve 52, and branched from the intermediate cooling water pipe 33 on the upstream side of the valve 52. An outlet cooling water pipe 54 is provided which is equipped with a third flow rate regulating valve 53 and discharges the cooling water to the outside area, and a heat source water inlet pipe 57 is provided.
It is the same as in FIG. 1 except that a mixed cooling water pipe 55 which branches off from the evaporator 1 and guides the cold water discharged from the evaporator 1 to an outlet cooling water pipe 54 is provided with a fourth flow rate regulating valve 56.

With such a configuration, when performing winter heating, the valve 52
is opened, the valve 58 is closed, the pump 41 is stopped, and the high temperature discharged cooling water discharged from the condenser 21 is evaporated as heat source water from the intermediate cooling water pipe 33 through the heat source water inlet pipe 57! By sending water to S1, high-temperature hot water can be taken out from the condenser 4 as described above.

In addition, the opening degree of the flow rate adjustment valve 53 of In2! Ill by I adjustment
The amount of discharged cooling water corresponding to the negative load can be sent to the evaporator 1.

In the above, since the discharged cooling water from the condenser 21 is directly sent to the evaporator 1 without passing through the heat exchanger as described above, the evaporator 1 is supplied with high-temperature discharged cooling water without heat loss due to heat exchange. becomes the heat source water. Therefore, high-temperature hot water can be taken out from the IT condenser 4 even if the temperature of the discharged cooling water is lower than the regulation value of the temperature difference between the inlet and outlet of the cooling water flowing through the condenser. Therefore, the discharged cooling water discharged from the outlet cooling water pipe 54 to the outside area flows through the inlet cooling water pipe 28 and condenses! I21
The temperature difference between the inlet cooling water and the outlet temperature will be below the regulation value.

In addition, in the unlikely event that the temperature of the discharged cooling water as a heat source water is low, high-temperature hot water cannot be obtained from the condenser 4, and for this reason, the temperature difference between the inlet and outlet of the cooling water is set to exceed the regulation value and the temperature of the discharged cooling water is lowered. To make the temperature higher, the pump 41 is driven to mix the cold water discharged from the evaporator 1 into the cold/hot water 1140, pass through the cooling water pipe 55, and set the flow rate to a mill by the fourth flow rate adjustment valve 56. It is mixed with the discharged cooling water flowing through the outlet cooling water pipe 54 to lower its temperature, and the temperature difference between the inlet and outlet of the cooling water is made below the regulation value.

During summer cooling, the absorption refrigeration unit 1110 is connected to the valve 52 between the intermediate cooling water pipe 33 and the heat source water inlet pipe 57. By closing the fourth flow regulating valve 56 and operating it away from the condenser 21, opening the valve 58 and driving the pump 41, cold water is obtained from the evaporator 1 as described above.

Although an absorption refrigerator is used as the heat pump in this embodiment, the same effect as described above can be obtained even if a compression refrigerator equipped with a membrane compressor is used.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the temperature of the exhaust cooling water discharged from the condenser of the condensing turbine is made sufficiently higher than the temperature of the inlet cooling water flowing in, and the high temperature exhaust cooling water is When exhaust heat is used in a heat pump, if the heat source water flowing through the evaporator and the cooling water flowing through the condenser cannot be mixed because they have different water quality, cleanliness, etc., the cooling water discharged from the condenser is transferred to the heat exchanger. The heat source water is heated in this heat exchanger and passed through the evaporator, allowing high-temperature hot water to be taken out from the condenser, and the cooling water discharged from the double water device to be heat exchanged. The temperature difference between the inlet and outlet of the cooling water that flows through the condenser, flows through the heat exchanger, and is discharged to the outside area must be kept below the regulation value. I can do it.

In addition, if the heat source water flowing through the evaporator and the cooling water flowing through the condenser are of similar quality and cleanliness and can be mixed, it is possible to use the cooling water discharged from the condenser as the heat source water. Even if the temperature difference between the inlet and outlet of the cooling water is below the regulation value, no heat exchanger is used, so the heat source water becomes high temperature. Therefore, high-temperature hot water for heating can be taken out from the heat pump and discharged to the outside area. The temperature difference between the inlet and outlet of the cooling water can be kept below the regulation value.

In addition, when heat source water and cooling water cannot be mixed, by providing the first bypass cooling water piping, the temperature of the cooling water at the inlet of the condenser can be adjusted by controlling a portion of the cooling water discharged from the heat exchanger. 1st
Since the cooling water can be mixed through the second bypass cooling water pipe, the inlet temperature of the condenser cooling water can be adjusted, and the second bypass cooling water pipe allows a part of the condenser outlet cooling water to be mixed into the heat exchanger. By bypassing the heat exchanger, the amount of cooling water corresponding to the load on the heat exchanger can be sent to the heat exchanger, and the discharged cooling water flowing through the second bypass cooling water pipe is mixed with the low-temperature cooling water discharged from the heat exchanger. By doing so, the temperature difference between the inlet and outlet of the cooling water discharged to the outside area can be kept below the regulation value, and high-temperature hot water can be obtained from the heat pump.

In addition, when heat source water and cooling water can be mixed, a third flow rate adjustment valve is installed in the outlet cooling water pipe, so that the amount of cooling water used as heat source water corresponding to the heating load can be adjusted to a third flow rate of 1 g. ! ! ! This can be adjusted using a valve, and by installing a mixed cooling water pipe that guides the low-temperature cold water discharged from the evaporator to the outlet cooling water pipe, in the unlikely event that the temperature of the discharged cooling water from the condenser is lower than the temperature of the inlet cooling water. Even if the temperature rises above the regulated value for the temperature difference between the inlet and outlet, the chilled water can be mixed with the discharged cooling water from the mixed cooling water piping, so the inlet of the cooling water is discharged to the outside area.

The outlet temperature difference can be suppressed to below the firing value.

In addition, when the exhaust heat of the cooling water of the double water unit is not used as in the 1st generation, it depends on the inlet temperature of the cooling water of the condenser, but in order to keep the temperature difference between the inlet and outlet of the cooling water below the regulation value. Although this uses a refrigerator equipped with a two-stage compressor, which consumes power, the refrigerator according to the present invention also has the effect of consuming less power than the refrigerator described above.

[Brief explanation of the drawing]

Figure 1 is a system diagram of a heat pump that uses waste heat from a turbine condenser in the case where heat source water flowing through an evaporator and cooling water flowing through a condenser cannot be mixed according to an embodiment of the present invention; A system diagram of a heat pump using waste heat from a turbine condenser in a case where the heat source water flowing through the evaporator and the cooling water flowing through the condenser can be mixed according to an embodiment of the invention, and FIG. 3 is an absorption chiller used as a heat pump. FIG. 1: Evaporator, 2: Absorber, 3: Rehabitor, 4# Compressor, 10
: Absorption refrigerator, 20: Condensing turbine, 21: Condenser, 3
0: heat exchanger, 33: intermediate cooling water piping, 35: first flow rate adjustment valve 36: first bypass cooling water piping, 37: second flow rate adjustment valve, 38: second bypass cooling water piping, 4
5: Bypass heat source water piping, 53: Third flow rate adjustment valve, 5
5: Mixed cooling water piping, 56: Fourth flow rate adjustment valve.

Claims (1)

[Claims] 1) A heat pump having an evaporator through which heat source water flows;
The condenser of the condensation turbine, through which the cooling water that cannot be mixed with the heat source water because the water quality and cleanliness are different from the heat source water, flows through the condenser, and the inlet and outlet of the cooling water from the condenser, which is installed before the evaporator. Equipped with a heat exchanger that heats the heat source water by exchanging heat with discharged cooling water that increases the temperature difference, and a bypass heat source water pipe that bypasses this heat exchanger and sends the heat source water to the evaporator. A heat pump that uses waste heat from a turbine condenser. 2) a heat pump having an evaporator through which heat source water flows;
The condenser of the condensing turbine, through which cooling water flows that can be mixed with the heat source water because the water quality and cleanliness are similar to the heat source water, and the temperature difference between the inlet and outlet of the cooling water from this condenser are increased. A heat pump that utilizes waste heat from a turbine condenser, characterized in that it is equipped with a cooling water pipe that takes out the discharged cooling water discharged from the engine and leads it to an evaporator as heat source water. 3) In the heat pump that utilizes waste heat from a turbine condenser according to claim 1, the inlet cooling water piping for the cooling water flowing into the condenser and the cooling water flowing through the heat exchanger after being discharged from the condenser. a first bypass cooling water pipe connected to the outlet cooling water pipe and provided with a first flow rate regulating valve; and an intermediate cooling water pipe connected to the cooling water outlet of the condenser and the cooling water inlet of the heat exchanger. A heat pump utilizing waste heat from a turbine condenser, characterized in that a second bypass cooling water pipe is connected to the outlet cooling water pipe and includes a second flow rate regulating valve. 4) The heat pump that utilizes waste heat from a turbine condenser according to claim 2, further comprising: a third flow rate regulating valve provided in an outlet cooling water pipe for discharging the exhaust cooling water discharged from the condenser to an outside area; A turbine condenser waste heat system characterized by being provided with a mixed cooling water pipe equipped with a fourth flow rate regulating valve that guides the cold water discharged from the vessel to the outlet cooling water pipe downstream of the third flow rate regulating valve. Utilize heat pump.