JP2011122735A - Heat supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat supply system which efficiently obtains a high-temperature heat source without requiring introduction of a new facility and extensive construction work and introduces a heat pump water heater for industrial use. <P>SOLUTION: The heat supply system 100 includes: an air compressor 110 at least including an air compression mechanism 112 compressing air to generate compressed air; and a heat pump 120 including a condenser 126, an expansion valve 128, an evaporator 122 and a heating medium compressor 124 in which a heating medium is circulated. The evaporator 122 is arranged on the downstream side of the air compression mechanism 112. In the evaporator 122, heat exchange is performed between the compressed air and the heating medium, and in the condenser 126, heat exchange is performed between a heated body which is a heating target and the heating medium. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heat supply system that supplies heat used for industrial air conditioning, hot water supply, and the like.

In recent years, from the viewpoint of effective use of energy (energy saving) and reduction of CO ₂ emission, which is a greenhouse gas, heat pump hot water supply apparatuses have been widely used in general households. A heat pump type hot water supply apparatus utilizes the property that a liquid heat medium absorbs ambient heat when vaporized by expansion and emits heat when liquefied by condensation. Thereby, compared with a combustion type hot water supply apparatus, the primary energy consumption can be reduced by about 40%, the CO ₂ emission can be reduced by about 58%, and the running cost can be significantly reduced. Because of such advantages, heat pump hot water supply apparatuses are being considered for introduction to industrial use as well as home use.

  In the above-mentioned household heat pump hot water supply apparatus, the hot water supply destination is mainly the kitchen or bathroom, so the temperature of the hot water is about 45 ° C to 60 ° C. Therefore, even if the heat source for heating the heat medium circulating through the heat pump hot water supply apparatus is air, the heat medium can sufficiently obtain heat for generating hot water.

  However, when used in industrial applications, the hot water supply apparatus often requires a tapping temperature of about 70 ° C to 100 ° C. In generating such hot water, if the air (atmosphere) is used as a heat source and is to be heated by a heat pump, the remaining amount of heat must be supplemented by the compressor work. For this reason, the work amount of the compressor and thus the power consumption increases, and the COP (Coefficient Of Performance, also referred to as an operation coefficient), which is a coefficient of performance of the heat pump type hot water supply apparatus, is significantly reduced.

  In order to increase the temperature of the heat medium without lowering the COP, that is, without increasing the work of the compressor, it is most efficient for the heat medium to obtain heat from a higher temperature heat source. Therefore, it has been considered to use a high-temperature heat source such as exhaust heat of combustion gas or steam drain water as a heat source of the heat pump.

  However, if the combustion gas is used as it is as a heat source of the heat pump, the temperature of the combustion gas cooled by heat exchange with the heat medium reaches the acid dew point, and the acidic vapor contained in the combustion gas condenses. The condensed acidic vapor corrodes the heat exchanger of the heat pump, and there is a problem that durability is lowered. In addition, dust is often contained in the combustion gas, and regular cleaning of the heat exchanger becomes indispensable due to the adhesion of the dust.

  Thus, for example, Patent Document 1 discloses that a product gas generated by thermal decomposition of plastic contained in industrial waste is burned after being dissolved and removed, and a heat pump that is an air conditioning facility is driven using the combustion gas generated by the combustion. A method of using energy for air conditioning is disclosed. According to this, since the combustion gas is purified by removing the acidic vapor and dust contained in the generated gas, the combustion gas can be used as a heat source of the heat pump, and the energy generated during the treatment of industrial waste is reduced. It is said that it can be used as much as possible.

JP-A-8-261424

  However, the technique described in Patent Document 1 requires a dissolved layer that dissolves acidic vapor, a combustion device that burns the product gas after dissolution and removal processing, and the like in order to clean the combustion gas. For this reason, new equipment must be introduced, which increases costs. Also, in facilities such as factories where industrial heat pump type hot water heaters are introduced, various facilities are often already provided, and it is difficult to secure an installation area for introducing new facilities. is there.

  In addition, when steam drain water is used as a high-temperature heat source, such steam drain water is generated at a plurality of locations in facilities such as factories. Therefore, in order to consolidate them at one location, a gap between existing facilities is sewn. Therefore, renovation work such as extending the piping is necessary. Accordingly, even in this case, there are problems in securing the cost and the installation area of the piping.

  In view of such a problem, the present invention can efficiently obtain a high-temperature heat source without requiring the introduction of new facilities or large-scale construction, and can be introduced into industrial applications of a heat pump hot water supply device. It aims to provide a simple heat supply system.

  The inventor diligently studied to solve the above problems, and focused on an air compressor installed at a very high probability in a facility such as a factory. Specifically, in facilities such as factories, equipment is driven using compressed air generated by compressing air in an air compressor. The temperature of the compressed air increases as the pressure increases due to adiabatic compression. However, there are parts and pipes that are damaged when the compressed air in an excessively high temperature is supplied, so the compressed air is supplied to various facilities after being cooled. Therefore, the heat released by this cooling is cooled (exhaust heat) without being effectively used. Therefore, the inventor has paid attention to the heat generated when the compressed air is cooled, and has further studied to complete the present invention.

  In order to solve the above problems, a typical configuration of a heat supply system according to the present invention includes an air compressor having at least an air compression mechanism for compressing air and generating compressed air, a condenser, an expansion valve, and an evaporator. And a heat pump that has a heat medium compressor and in which the heat medium circulates, and the evaporator is disposed downstream of the air compression mechanism, and in the evaporator, the compressed air and the heat medium exchange heat. In the condenser, the object to be heated and the heat medium exchange heat with each other.

  In the above configuration, the compressed air generated in the air compressor is cooled by exchanging heat with the heat medium in the evaporator of the heat pump arranged on the downstream side of the air compression mechanism. In such a heat exchange, a large amount of heat can be obtained from the compressed air, so that the heat medium becomes a high temperature, and the heated object to be heated can be heated to a high temperature in the condenser. Therefore, a high-temperature heat source can be efficiently obtained without requiring the introduction of new equipment or large-scale construction. And since a heat medium becomes high temperature by heat exchange with a high temperature heat source, the work amount for compressing a heat medium in the heat medium compressor of a heat pump does not increase, and the fall of COP does not arise. Thereby, the heat pump type hot water supply apparatus can be introduced into industrial applications, and heat supply excellent in energy saving and environmental load reduction can be performed in facilities such as factories. Moreover, since it becomes an air compressor which can supply heat rather than the air compressor which only exhausts heat, it becomes a thing with high added value also as an air compressor.

  The heated body may be circulated and supplied to the condenser. In other words, the heat pump in the above configuration is responsible for cooling the compressed air. For this reason, it is necessary to perform heat exchange continuously, and for that purpose, it is necessary to continuously supply heat in the condenser. Therefore, by making the object to be heated circulate, in the condenser, heat exchange between the object to be heated and the heat medium is always performed, so that the heat and heat supply system can be continuously operated. Examples of the object to be heated are a circulation type, such as a hot water supply apparatus having a hot water storage tank, and a facility for continuous heating operation such as a dryer or a plating tank.

  A plurality of the above air compressors are provided, and in the heat pump, a plurality of evaporators are provided and connected in parallel, a plurality of expansion valves are provided and connected to each of the plurality of evaporators, and the plurality of evaporators are respectively Heat exchange with the compressed air of a plurality of air compressors may be performed.

  According to the above configuration, the heat medium can obtain heat by performing heat exchange with compressed air generated by a plurality of air compressors, that is, with a large amount of compressed air. Therefore, it is possible to increase the temperature of the heat medium and thus the temperature of the heated object more efficiently. Further, by sharing the configuration of the heat pump for a plurality of air compressors, it is possible to reduce the equipment cost and the installation area.

  A plurality of the heat pumps are provided, and the plurality of heat pumps may be arranged in series with respect to the flow path of the compressed air. Thus, dehumidification can be performed by performing multistage cooling and fully cooling compressed air. In particular, the evaporator with only the heat pump on the most downstream side with respect to compressed air was set to a temperature below the freezing point (freezing point), and the other evaporators were frosted by adjusting the temperature to be above the freezing point. In this case, it is only necessary to stop the operation of only the most downstream heat pump, so that the operation becomes easy. Furthermore, by arranging two heat pumps that cool to the freezing point or lower in parallel, defrosting can be performed alternately, and therefore, continuous operation can be performed without degrading the dehumidifying capacity.

  The air compressor is a two-stage compression air compressor having two air compression mechanisms in series, and the plurality of heat pumps may be provided on the downstream side of each of the two air compression mechanisms. In such a configuration, the air is first compressed by the upstream air compression mechanism to become compressed air, and is cooled by exchanging heat with the evaporator of the heat pump provided on the downstream side of the air compression mechanism. The compressed air after the heat exchange is further compressed by the downstream air compression mechanism, and heat exchange with the heat medium is performed by the evaporator of the heat pump provided on the downstream side of the air compression mechanism. Therefore, since the compressed air performs heat exchange twice, the heat medium can obtain the heat of the compressed air more efficiently, and can cool the compressed air more efficiently.

  In the above heat pump, a plurality of evaporators are provided and connected in parallel, a plurality of expansion valves are provided and connected to each of the plurality of evaporators, and any one of the plurality of evaporators is compressed. Heat exchange with air is performed, and the other evaporator may exchange heat with a member whose temperature rises among members constituting the air compressor.

  According to the above configuration, heat can be obtained not only from compressed air but also from a member whose temperature has risen among members constituting the air compressor, for example, a casing of the air compression mechanism, and heating efficiency of the heat medium (exhaust heat) Recovery efficiency) can be improved. In addition, since the temperature of a member whose temperature has risen decreases due to the transfer of heat to the heat medium, the number of cooling-related members and related equipment such as heat dissipation coils, cooling fans, cooling towers, and cooling water pumps required for cooling such members is reduced. It is also possible to do.

  According to the said structure, the temperature of compressed air and the temperature of a to-be-heated body can be made to reach desired temperature by adjusting the opening degree of a some expansion valve. Specifically, since the compressed air needs to be cooled to a predetermined temperature, first, the flow rate of the heat medium is determined mainly by the temperature of the compressed air. At this time, if the amount of heat for supplying heat is insufficient, heat is exchanged with other parts to absorb heat. On the other hand, if the amount of heat for supplying heat is sufficient, heat absorption from other parts is suppressed. That is, in other evaporators, the flow rate of the heat medium is determined mainly by the temperature of the heated object. This is because the casing, air compression mechanism, etc. can be used as a heat buffer because there is no problem even if the temperature rises or falls somewhat. Thus, both compressed air and a to-be-heated body can be made into desired temperature.

  The heat supply system further includes a heat exchanger provided between the air compression mechanism and the evaporator. In the heat exchanger, the high-temperature compressed air and the heated object directly exchange heat, and the condenser Then, it is good to perform heat exchange indirectly with the compressed air and the to-be-heated body which temperature fell through the heat pump.

  According to the said structure, a to-be-heated body can also be directly heated with compressed air, and can also be heated indirectly after raising a temperature with a heat pump. Therefore, for example, it is not necessary to operate the heat pump if the temperature of the object to be heated is sufficient, and if a higher temperature is required, heating may be performed via the heat pump. Alternatively, the intermediate temperature may be generated by mixing the directly heated object and the indirectly heated object. Thereby, the operation of the heat pump can be reduced as much as possible, and the power consumption can be further reduced. In addition, the cooling efficiency of the compressed air can be further improved.

  In the above heat pump, a plurality of evaporators are provided and connected in series, a plurality of expansion valves are provided and connected to each of the plurality of evaporators, and the heat supply system has a flow of compressed air to the plurality of evaporators. It is preferable to further have a switching valve for switching the direction and operate the plurality of evaporators alternately while switching the switching valve. With such a configuration, even if frost is generated in any of the plurality of evaporators, the frosted evaporator is defrosted while continuing cooling and dehumidification by operating other evaporators. It becomes possible.

  In the case where there is one air compressor, the frequency of the heat medium compressor is at least one of the motor frequency of the air compressor, the temperature of the compressed air at the outlet of the air compressor, and the temperature of the compressed air at the outlet of the evaporator. It may be adjusted by reference.

  As described above, the heat pump is responsible for heating the object to be heated and cooling the compressed air, so that the temperature of the object to be heated and the temperature of the compressed air reach the desired temperatures by heat exchange with the heat medium. I have to let it. Therefore, by controlling the frequency of the heat medium compressor mainly by controlling the temperature of the compressed air as described above, the temperature of the compressed air can reach the desired temperature.

  When there are a plurality of air compressors, the frequency of the heat medium compressor may be adjusted with reference to at least one of the degree of superheat and the saturation temperature of the heat medium at the inlet of the heat medium compressor. Thereby, the heat medium compressor ensures the overall cooling capacity, and the temperature adjustment in each air compressor can be adjusted by the expansion valve connected to each.

  When the heat pump connects a plurality of evaporators in parallel and the plurality of evaporators exchange heat with the compressed air and the temperature rising member, the opening degree of the expansion valve connected to each evaporator is respectively May be adjusted with reference to the temperature of the member performing heat exchange and the degree of superheat of the heat medium at the inlet of the heat medium compressor. The heat medium compressor is adjusted mainly by the temperature of the compressed air. In this way, the expansion valve connected to other equipment is adjusted by referring not only to the temperature of each equipment but also to the degree of superheat of the heat medium. As a result, the overall cooling capacity can be secured.

  When the flow rate of the heated body is controlled using one or more of the temperature of the heated body at the outlet of the condenser, the temperature of the heat medium at the outlet of the heat medium compressor, and the pressure of the heat medium at the outlet of the heat medium compressor. Good. Thereby, it becomes possible to make the temperature of a to-be-heated body reach desired temperature.

  According to the present invention, there is provided a heat supply system capable of efficiently obtaining a high-temperature heat source without introducing new equipment or large-scale construction, and capable of being introduced into industrial applications of a heat pump hot water supply device. Can be provided.

It is a figure which shows the structure of the heat supply system concerning 1st Embodiment. It is a figure which shows the structure of the heat supply system concerning 2nd Embodiment. It is a figure which shows the structure of the heat supply system concerning 3rd Embodiment. It is a figure which shows the structure of the heat supply system concerning 4th Embodiment. It is a figure which shows the structure of the heat supply system concerning 5th Embodiment. It is a figure which shows the structure of the heat supply system concerning 6th Embodiment. It is a figure which shows the structure of the heat supply system concerning 7th Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(First embodiment)
FIG. 1 is a diagram illustrating a configuration of a heat supply system 100 according to the first embodiment. In the figure, piping through which air or compressed air passes is indicated by a broken line, piping through which a heat medium passes is indicated by a solid line, piping through which a heated body passes is indicated by a white line, and the arrow of each line indicates the passing direction. Show. As shown in FIG. 1, the heat supply system 100 includes an air compressor 110, a heat pump 120, and a heat supply facility 140.

  The air compressor 110 generates compressed air for driving factory equipment (not shown). Compressed air can be used as a power source for air cylinders, machine tools, and conveying devices using pressure, used for spray spray and cleaning air blow using jet power, or as an oxygen supply source for burners, etc. It is very diverse. For this reason, it is almost certainly installed in the production factory, and it is installed with a very high probability in other factories.

  The air compressor 110 includes an air compression mechanism 112 and a tank 114. The air compression mechanism 112 generates compressed air by compressing air. The generated compressed air exchanges heat with the heat medium in the heat pump 120 and then is sent to the tank 114 and supplied from the tank 114 to factory equipment. In the present embodiment, the tank 114 is provided inside the air compressor 110, but the present invention is not limited to this, and the tank 114 may be provided outside the air compressor 110.

  The heat pump 120 has a heat medium circulating therein, heats the heat medium using the compressed air generated in the air compressor 110 as a heat source, and heats an object to be heated, which will be described later, using the heated heat medium. The heat pump 120 includes an evaporator 122, a heat medium compressor 124, a condenser 126, and an expansion valve 128.

  The evaporator 122 is disposed on the downstream side of the air compression mechanism 112 and performs heat exchange between the compressed air and the heat medium. Specifically, the evaporator 122 is supplied with the heat medium that has passed through the expansion valve 128 and the compressed air from the air compression mechanism 112, and these perform heat exchange. Thus, the compressed air is cooled by the heat medium being deprived of heat, and the temperature of the heat medium that has obtained heat from the compressed air rises (is heated). At this time, since the compressed air serving as a heat source is at a high temperature, the heat medium can efficiently obtain a large amount of heat, and the temperature is also high. Therefore, the heat medium can heat the object to be heated to a high temperature in the condenser 126 described later.

  The heat medium compressor 124 compresses the heat medium evaporated by absorbing the heat of the compressed air using electric power. Thereby, since a heat medium will be in a high voltage | pressure state and generate | occur | produces a higher heat | fever, a to-be-heated body can be heated using this heat. In the present embodiment, since the heat medium exchanges heat with high-temperature compressed air in the evaporator 122, the heat medium is somewhat hot even in a state before compression. Therefore, the work amount of the heat medium compressor 124 does not increase, and it is possible to suppress a decrease in COP.

  The condenser 126 performs heat exchange between the heated object to be heated and the heat medium. Specifically, the condenser 126 is supplied with the heat medium that has passed through the heat medium compressor 124 and the object to be heated that circulates in the heat supply facility 140, and these perform heat exchange. As a result, the temperature of the heat medium is decreased by the heat to be heated by the heated body, and the temperature of the heated medium is increased (heated) by obtaining heat from the heat medium.

  The expansion valve 128 expands and cools the heat medium after heat exchange with the object to be heated in the condenser 126 in a reduced pressure state. As a result, the heat medium can exchange heat with the compressed air again in the evaporator 122, and the heat medium can be reused.

  The heat supply facility 140 supplies heat using the heated object heated by the heat medium in the condenser 126. Examples of the heat supply equipment 140 include air conditioning equipment and hot water supply equipment. For example, if the heat supply equipment 140 is an air conditioning equipment, the object to be heated is air, and if it is a hot water supply equipment, the object to be heated is water. Become. Further, by using a secondary refrigerant as the heated body, heat can be supplied to different types of facilities, or heat can be supplied to other buildings apart from the heat pump 120.

  In the present embodiment, the heat supply facility is disposed on the circulation pipe 140a, and the heated object circulates through the circulation pipe 140a. Thereby, in the condenser 126, heat exchange between the heated object and the heat medium is always performed, so that the heat and heat supply system 100 can be continuously operated.

  The reason why the heated object is circulated in the heat supply facility 140 is also because the heated object is circulated and supplied to the condenser 126. As described above, the heat pump 120 heats the object to be heated and also cools the compressed air. Therefore, the heat pump 120 is responsible for cooling the compressed air, and the evaporator 122 needs to continuously exchange heat between the compressed air and the heat medium. For that purpose, the heat obtained by the heat medium by heat exchange in the evaporator 122 must be absorbed by the object to be heated by heat exchange in the condenser 126 to lower the temperature of the heat medium. Therefore, it becomes possible to continuously cool the compressed air by the heat pump 120 by making the object to be heated circulation type as in the above configuration. In addition, in order to make a to-be-heated body into a circulation type, it is suitable if the heat supply equipment 140 is a hot water supply apparatus having a hot water storage tank, a facility that is continuously operated by heating such as a dryer or a plating tank, or the like.

  As described above, according to the heat supply system 100 according to the first embodiment, the compressed air of the air compressor 110 is used as a heat source of the heat pump 120 without requiring the introduction of new equipment or large-scale construction. And a high-temperature heat source can be obtained efficiently. Thereby, the heat pump can be introduced into industrial applications, and heat supply excellent in energy saving and environmental load reduction can be performed in facilities such as factories. Further, when viewed as the air compressor 110, not only exhaust heat but also heat supply is performed, so that the added value can be increased.

  Note that, when the heat pump 120 heats the heated object and cools the compressed air as in the present embodiment, the frequency of the heat medium compressor 124 is controlled in order to reach the desired temperature of the compressed air. And in order to make the temperature of a to-be-heated body reach desired temperature, it is good to control the flow volume of a to-be-heated body. In FIG. 1, the reference for control is indicated by a one-dot chain line.

  Specifically, for controlling the frequency of the heat medium compressor 124, one or more of the motor frequency of the air compressor 110, the temperature of the compressed air at the outlet of the air compressor 110, and the temperature of the compressed air at the outlet of the evaporator 122 are selected. Use. In addition, in FIG. 1, although the three dot-dash lines are drawn, any one may be sufficient. When the control using the temperature of the compressed air at the outlet of the air compressor 110 is illustrated, when the temperature of the compressed air is higher than a desired temperature, the frequency of the heat medium compressor 124 is controlled to be a high frequency. Accordingly, since the flow rate of the heat medium circulating in the heat pump increases, heat exchange between the compressed air and the heat medium is promoted, and the heat medium can absorb more heat of the compressed air. Therefore, the compressed air is sufficiently cooled and the temperature is lowered. On the other hand, when the temperature of the compressed air is lower than a desired temperature, the frequency of the heat medium compressor 124 is controlled to be a low frequency. Thereby, since the flow rate of the heat medium circulating in the heat pump is reduced, heat exchange between the compressed air and the heat medium is suppressed. Therefore, the compressed air can store more heat and the temperature rises. Therefore, the temperature of the compressed air can be suitably adjusted by the above control, and the desired temperature can be reached. When referring to the frequency of the air compression mechanism 112 of the air compressor 110, since the adiabatic compression is performed inside, the temperature of the compressed air can be substantially adjusted mainly.

  Further, when the frequency of the heat medium compressor 124 is controlled based on the temperature of the compressed air, the opening degree of the expansion valve 128 may not be appropriate. Therefore, the degree of superheat of the heat medium at the inlet of the heat medium compressor 124 is referred to, and when the degree of superheat exceeds the allowable range, the opening degree of the expansion valve 128 is adjusted. Thereby, it becomes possible to operate the heat pump 120 continuously.

  For controlling the flow rate of the heated object, one or more of the temperature of the heated object at the outlet of the condenser 126, the temperature of the heat medium at the outlet of the heat medium compressor 124, and the pressure of the heat medium at the outlet of the heat medium compressor 124 are used. Is used. In addition, in FIG. 1, although the three dot-dash lines are drawn, any one may be sufficient. When the control using the temperature of the heated object at the outlet of the condenser 126 is exemplified, when the temperature of the heated object is lower than a desired temperature, the flow rate of the heated object is controlled to be decreased. Thereby, since the amount of heat that the heated body per unit amount absorbs from the heat medium increases, the heated body is sufficiently heated and the temperature rises. On the other hand, when the temperature of the heated body is higher than a desired temperature, if the flow rate of the heated body is controlled to increase, the amount of heat absorbed by the heated body per unit amount decreases and the temperature decreases. Therefore, it becomes possible to adjust the temperature of a to-be-heated body suitably by said control, and to make it reach desired temperature.

(Second Embodiment)
FIG. 2 is a diagram illustrating a configuration of a heat supply system 200 according to the second embodiment. In addition, about the element which has the function and structure substantially the same as the component of the heat supply system 100 of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. Moreover, the broken line, the solid line, and the white line in the figure mean the same piping as FIG.

  The heat supply system 200 according to the second embodiment is greatly different from the heat supply system 100 of the first embodiment in that the heat supply system 200 includes a plurality of air compressors and the heat pump includes a plurality of evaporators and expansion valves. That is, as shown in FIG. 2, the heat supply system 200 includes a plurality of air compressors 210 a to 210 e, a heat pump 220, a heat supply facility 140, and a tank 230.

  The plurality of air compressors 210a, 210b, 210c, 210d, and 210e have air compression mechanisms 212a, 212b, 212c, 212d, and 212e, respectively, and compress the air to generate compressed air. The generated compressed air exchanges heat with the heat medium in the evaporators 222a, 222b, 222c, 222d, and 222e of the heat pump 220, and then is sent to the tank 230 and supplied from the tank 230 to factory equipment.

  The heat pump 220 has a heat medium circulating therein, and performs heat exchange between the heat medium and compressed air, and heat exchange between the heat medium and the object to be heated. The heat pump 220 includes a plurality of evaporators 222a to 222e, a heat medium compressor 124, a condenser 126, and a plurality of expansion valves 228a to 228e.

  The plurality of evaporators 222a, 222b, 222c, 222d, and 222e are disposed on the downstream side of the air compression mechanisms 212a to 212e, respectively, and are connected in parallel in the heat pump 220. The plurality of evaporators 222a to 222e perform heat exchange between the compressed air supplied from the plurality of air compressors 210a to 210e and the heat medium.

  The plurality of expansion valves 228a, 228b, 228c, 228d, and 228e are connected to the plurality of evaporators 222a to 222e, respectively, and the heat medium after exchanging heat with the heated body in the condenser 126 is decompressed to expand Cooling.

  The tank 230 is arrange | positioned downstream from the confluence | merging point of the compressed air after heat-exchange in several evaporator 222a-222e, and stores compressed air temporarily. In the present embodiment, unlike the first embodiment, the tank 230 is separately provided as a common tank outside rather than as a component of the air compressors 210a to 210e. As a result, it is not necessary to individually install the tanks 230 for the plurality of air compressors 210a to 210e, and the size of the tank 230 is not limited, so that a tank 230 with a larger allowable amount can be installed. Because. Further, the air compressor can be reduced in size. In addition, it is not limited to this, You may provide the tank 230 as a component of the air compressors 210a-210e inside.

  As described above, since the heat supply system according to the second embodiment includes the plurality of air compressors 210a to 210e and the plurality of evaporators 222a to 222e, the heat medium exchanges heat with a large amount of compressed air. Can get more heat. This makes it possible to increase the temperature of the heat medium, and thus the temperature of the heated object heated by the heat medium, with high efficiency. Even if the plurality of air compressors 210a to 210e are provided, the configuration of the heat pump 220 is shared, so that the equipment cost and the installation area can be reduced.

  In the second embodiment, the number of air compressors and the number of evaporators and expansion valves included in the heat pump 220 are all five. However, the present invention is not limited to this, and at least two or more of them are provided. It only has to be.

  When there are a plurality of air compressors 210a to 210e as in the present embodiment, the frequency of the heat medium compressor 124 refers to the superheat degree or saturation temperature of the heat medium at the inlet of the heat medium compressor 124. To adjust. In this case, any of the air compressors 210a to 210e cannot be led. Therefore, as described above, the heat medium compressor 124 ensures the overall cooling capacity by referring to the degree of superheat or the saturation temperature. The temperature adjustment in each of the air compressors 210a to 210e is adjusted by the expansion valves 228a to 228e connected to the respective air compressors 228a to 228e by referring to the temperatures of the respective compressed air and by their opening degrees (by the flow rate of the heat medium). By these things, the temperature of each compressed air can be made to reach a desired temperature.

(Third embodiment)
FIG. 3 is a diagram illustrating a configuration of a heat supply system 300 according to the third embodiment. FIG. 3A is a diagram illustrating a schematic configuration of the heat supply system 300, and FIG. 3B is a diagram illustrating an installation position of the evaporator. In addition, about the element which has the substantially same function and structure as the heat supply system 100 of 1st Embodiment, and the heat supply system 200 of 2nd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. . Moreover, the broken line, the solid line, and the white line in FIG. 3A mean the same piping as in FIG.

  In the heat supply system 300 according to the third embodiment, the heat pump has a plurality of evaporators and expansion valves, and the plurality of evaporators exchange heat not only with compressed air but also with members constituting the air compressor. However, it differs greatly from the heat supply system 100 of the first embodiment. That is, as shown in FIG. 3, the heat supply system 300 includes an air compressor 310, a heat pump 320, a heat supply facility 140, and a tank 230.

  The air compressor 310 compresses air using the air compression mechanism 312 and generates compressed air. The generated compressed air is exchanged with the heat medium in the evaporator 322a of the heat pump 320, and then sent to the tank 230, and is supplied from the tank 230 to factory equipment.

  As will be described later, in the present embodiment, evaporators 322b to 322e of the heat pump 320 are provided on a member whose temperature rises among members constituting the air compressor 310. Examples of the member that increases in temperature include an air compression mechanism casing 312a, an electric motor casing 318, and a power supply device 314 of the air compressor 310, as shown in FIG. The air compression mechanism casing 312a is heated because the internal air is heated by adiabatic compression. The motor casing 318 is heated by the heat generated by the motor (not shown). The power supply device 314 is heated by the heat generated by the transistors of the inverter.

  Although not strictly a member, since the temperature of the lubricating oil supplied to the air compression mechanism 312 also rises, in this embodiment, a circulation path between the lubricating oil device 316 that supplies the lubricating oil and the air compression mechanism 312 is used. Among them, an evaporator is also installed on the return path of the lubricating oil. Note that these members are merely examples, and an evaporator may be provided for any other member whose temperature rises, and it is not necessary to provide an evaporator for all of these members.

  A heat medium circulates in the heat pump 320, and performs heat exchange between compressed air, members of the air compressor 310, lubricating oil, and the heat medium, and heat exchange between the heat medium and the object to be heated. The heat pump 320 includes a plurality of evaporators 322a to 322e, a heat medium compressor 124, a condenser 126, and a plurality of expansion valves 228a to 228e.

  The plurality of evaporators 322 a, 322 b, 322 c, 322 d, and 322 e are connected in parallel in the heat pump 320. The plurality of evaporators 322a to 322e exchange heat between the compressed air, the members of the air compressor 310, or the lubricating oil and the heat medium. Specifically, the evaporator 322 a is disposed on the downstream side of the air compression mechanism 312 and performs heat exchange between the compressed air generated in the air compressor 310 and the heat medium. The evaporator 322b is attached to the air compression mechanism casing 312a, and performs heat exchange between the air compression mechanism casing 312a and the heat medium. The evaporator 322c is attached to the electric motor casing 318, and performs heat exchange between the electric motor casing 318 and the heat medium. The evaporator 322d is attached to the power supply device 314, and performs heat exchange between the power supply device 314 and the heat medium. The evaporator 322e is disposed on the return path of the lubricating oil between the air compression mechanism 312 and the lubricating oil device 316, and performs heat exchange between the lubricating oil and the heat medium.

  With the above configuration, not only the compressed air but also members whose temperature has increased among the members constituting the air compressor 310 (in this embodiment, the air compression mechanism casing 312a, the motor casing 318, the power supply device 314) and the lubricating oil. Can also get heat. Therefore, it is possible to improve the recovery efficiency of exhaust heat, in other words, the heating efficiency of the heat medium. At the same time, the member whose temperature has risen is cooled by heat transfer, so that it is possible to reduce the equipment required for cooling the member.

  As described above, when heat exchange is performed with compressed air or air compressor members in a plurality of evaporators, the frequency of the heat medium compressor 124 is adjusted with reference to the temperature of the compressed air, The opening degree of the expansion valve 228a connected to the evaporator 322a that performs heat exchange is adjusted with reference to the degree of superheat of the heat medium at the outlet of the evaporator 322a, and the expansion valve 228b connected to the other evaporators 322b to 322e. The opening degree of ˜228e may be adjusted with reference to the temperature of the object to be cooled such as the temperature of the air compression mechanism 312. Thereby, the temperature of compressed air and the temperature of a to-be-cooled body can be made to reach desired temperature.

  Specifically, as described above, the heat pump 320 in the heat supply system 300 is a heating device for a heated object and a cooling device for compressed air. For this reason, the heat pump 320 must both heat the object to be heated and cool the compressed air. However, if the heat medium flows to the other evaporators 322b to 322e, the heat medium flowing to the evaporator 322a If the amount is insufficient, cooling of the compressed air will be insufficient. Therefore, first, the flow rate of the heat medium to the evaporator 322a is determined mainly by the temperature of the compressed air, and the opening degree of the expansion valve 228a is adjusted accordingly.

  The expansion valves 228b to 228e connected to the other evaporators 322b to 322e refer to the temperatures of the devices to which the respective evaporators are connected, and adjust the opening degree so as to cool each appropriately. However, if the opening degree of the expansion valves 228b to 228e is adjusted in accordance with the temperature of each device, the overall flow rate of the heat medium may not be appropriate.

  Therefore, the opening degree of each expansion valve 228b to 228e refers not only to the temperature of the member that performs heat exchange, but also to the degree of superheat of the heat medium at the inlet (point A in FIG. 3) of the heat medium compressor 124. Adjust. When the degree of superheat of the heat medium sucked into the heat medium compressor 124 of the heat pump 320 becomes too high, the temperature of the heat medium from the other evaporators 322b to 322e (hereinafter referred to as return refrigerant temperature) is lowered. In addition, the opening degree of the expansion valves 228b to 228e is reduced. When the superheat degree becomes too low, the opening degree of the expansion valves 228b to 228e is opened so that the return refrigerant temperature from the other evaporators 322b to 322e becomes high. In this way, both the compressed air and the heat medium at the inlet of the heat medium compressor 124 are desired while using the air compression mechanism casing 312a, the motor casing 318, etc., which do not hinder even if the temperature rises and falls somewhat as a heat buffer. Temperature.

  Note that, as in the present embodiment, heat exchange between a member whose temperature rises among the members constituting the air compressor 310 and the heat medium is performed, and the member is cooled, thereby obtaining the following effects. be able to. By cooling the air compression mechanism casing 312a, the coolant circuit for cooling the air compression mechanism casing 312a can be abolished, and the cost required for it can be reduced. In addition, by cooling the motor casing 318, it is possible to reduce the power required for the motor casing cooling fan and to reduce noise during fan operation. In addition, since the cooling air passage can be reduced, the equipment size can be reduced. Further, by cooling the power supply device 314, it is possible to reduce the power required for the power supply device cooling fan and the noise during the operation of the fan, and to reduce the cooling air path and reduce the equipment size. Cooling the lubricating oil also makes it possible to reduce the power of the lubricating oil cooling fan, reduce noise, and reduce the size of the equipment.

(Fourth embodiment)
FIG. 4 is a diagram illustrating a configuration of a heat supply system 400 according to the fourth embodiment. FIG. 4A is a diagram illustrating a schematic configuration of the heat supply system 400, and FIG. 4B is a diagram illustrating another example of the arrangement of the heat exchanger. In addition, about the element which has the function and structure substantially the same as the component of the heat supply system 100 of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. Moreover, the broken line, the solid line, and the white line in FIG. 4 mean the same piping as FIG.

  The heat supply system 400 according to the fourth embodiment is greatly different from the heat supply system 100 of the first embodiment in that it includes a plurality of heat pumps. That is, as shown in FIG. 4A, the heat supply system 400 includes an air compressor 410, a plurality of heat pumps 120a and 120b, a heat supply facility 140, and a tank (not shown). The heat pumps 120a and 120b have substantially the same function and configuration as the heat pump 120 of the first embodiment, and the air compressor 410 has a tank of the air compressor 410 of the first embodiment provided outside. Therefore, detailed description thereof will be omitted.

  In the present embodiment, the heat pumps 120 a and 120 b are arranged in series with respect to the compressed air flow path 460. Thereby, since the multistage cooling of the compressed air can be performed in the evaporator 122a of the heat pump 120a and the evaporator 122b of the heat pump 120b, the compressed air can be sufficiently cooled and dehumidified. The condensed droplets (water) are collected and drained by a drain pipe (not shown).

  At this time, the downstream heat pump with respect to the compressed air, that is, the evaporator 122b of the heat pump 120b may be adjusted to a temperature below the freezing point (freezing point), and the upstream evaporator 122a may be adjusted to a temperature above the freezing point. When three or more heat pumps are arranged in series, the most downstream heat pump may be set to a temperature below the freezing point, and the other heat pumps may be set to a temperature above the freezing point. As a result, frost is generated only during the operation on the downstream side of the evaporator 122b. Therefore, even when frost is generated, the operation of the heat pump 120b only needs to be stopped, and the heat supply system 400 can be operated. It becomes. Therefore, operation becomes easy. And since the compressed air which passed the heat pump 120a flows in into the evaporator 122b of the heat pump 120b which stopped operation | movement, it also becomes possible to accelerate | stimulate the defrost of the evaporator 122b using the heat of this compressed air. .

(Fifth embodiment)
FIG. 5 is a diagram illustrating a configuration of a heat supply system 500 according to the fifth embodiment. In addition, about the element which has the function and structure substantially the same as the component of the heat supply system 100 of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. Moreover, the broken line, the solid line, and the white line in FIG. 5 mean the same piping as FIG.

  The heat supply system 500 according to the fifth embodiment is greatly different from the heat supply system 100 of the first embodiment in that the heat supply system 500 includes a plurality of heat pumps and the compressor is a two-stage compression compressor. That is, as shown in FIG. 5, the heat supply system 500 includes an air compressor 510, a plurality of heat pumps 120a and 120b, a heat supply facility 140, and a tank (not shown). Note that the heat pumps 120a and 120b have substantially the same function and configuration as the heat pump 120 of the first embodiment, and thus a detailed description thereof will be omitted.

  The air compressor 510 of this embodiment is a two-stage compression type air compressor having two air compression mechanisms 512 and 514 arranged in series. Thereby, air can be compressed in two stages using the air compression mechanisms 512 and 514, so that the compression efficiency can be increased.

  Usually, in a two-stage compression type air compressor, an intercooler is provided between two air compression mechanisms, the compressed air that has been compressed by the downstream air compression mechanism and heated to a high temperature is cooled by the intercooler, and then the upstream The air is compressed again by the air compression mechanism, and the compressed air compressed again is cooled by the aftercooler. At this time, the heat of the compressed air absorbed by the intercooler and the aftercooler becomes exhaust heat.

  Therefore, in the present embodiment, the heat pump 120a is provided on the downstream side of each of the two air compression mechanisms, that is, the downstream side of the air compression mechanism 512, and the heat pump 120b is provided on the downstream side of the air compression mechanism 514. Thus, the air is first compressed by the upstream air compression mechanism 512 to become compressed air, and is cooled by exchanging heat with the heat medium in the evaporator 122a of the heat pump 120a. The compressed air that has passed through the evaporator 122a is further compressed by the air compression mechanism 514 on the downstream side, and is then cooled again by exchanging heat with the heat medium in the evaporator 122b of the heat pump 120b. Therefore, according to the above configuration, the heat medium efficiently compresses the heat of the compressed air by two heat exchanges with the compressed air while efficiently compressing the compressed air by the two-stage compression by the air compressor 510. And the compressed air can be cooled more efficiently.

(Sixth embodiment)
FIG. 6 is a diagram illustrating a configuration of a heat supply system 600 according to the sixth embodiment. In addition, about the element which has the substantially same function and structure as the heat supply system 100 of 1st Embodiment, and the heat supply system 400 of 4th Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. . Moreover, the broken line, the solid line, and the white line in FIG. 6 mean the same piping as FIG.

  The heat supply system 600 according to the sixth embodiment includes a switching valve, and the heat pump includes a plurality of evaporators and a plurality of expansion valves, and the plurality of evaporators are alternately operated while switching the switching valves. This is greatly different from the heat supply system 100 of the first embodiment. That is, as shown in FIG. 6, the heat supply system 600 includes an air compressor 410, a heat pump 620, a heat supply facility 140, a four-way valve 640 as a switching valve, and a tank (not shown).

  The heat pump 620 includes a plurality of evaporators 622a and 622b, a heat medium compressor 124, a condenser 126, and a plurality of expansion valves 628a and 628b. The plurality of evaporators 622a and 622b are arranged in series with the compressed air flow path 460, and are arranged in parallel with the heat medium flow path 630. A plurality of expansion valves 628a and 628b are connected to the plurality of evaporators 622a and 622b, respectively.

  The four-way valve 640 is a valve provided in the compressed air flow path 460. By switching the four-way valve 640, the flow direction of the compressed air to the plurality of evaporators 622a and 622b can be switched. The flow direction of the compressed air is a direction in which the operated evaporators 622a and 622b are on the downstream side.

  In the present embodiment, the plurality of evaporators 622a and 622b are operated alternately while switching the four-way valve 640. Specifically, in the state of the four-way valve 640 shown in FIG. 6, the compressed air passes through the flow path 460 in the counterclockwise direction. At this time, in the heat pump 620, the evaporator 622b is not operated with the expansion valve 628b closed, and the evaporator 622a is operated with the expansion valve 628a open. Thereby, heat exchange between the compressed air and the heat medium is performed in the evaporator 622a. If the evaporator 622a is frosted by this heat exchange, the four-way valve 640 is switched. Then, the compressed air passes through the flow path 460 in the direction opposite to the arrow in FIG. 6, that is, in the clockwise direction. In parallel with this, in the heat pump 620, the operation of the evaporator 622a is stopped by closing the expansion valve 628a, and the operation of the evaporator 622b is started by opening the expansion valve 628b. Thus, heat exchange between the compressed air and the heat medium is performed in the evaporator 622b.

  As described above, according to the heat supply system 600 according to the sixth embodiment, even if frosting occurs in any of the plurality of evaporators 622a and 622b, other evaporators are operated. Thus, cooling and dehumidification of the compressed air can be continued. Then, when the compressed air passes through the stopped evaporator, that is, the frosted evaporator before being supplied to the operating evaporator, the defrosting of the evaporator can be suitably performed. In particular, by switching the flow direction of the compressed air, defrosting can be performed with the compressed air before cooling, so that defrosting can be performed quickly.

(Seventh embodiment)
FIG. 7 is a diagram illustrating a configuration of a heat supply system 700 according to the seventh embodiment. In addition, about the element which has the substantially same function and structure as the heat supply system 100 of 1st Embodiment, and the heat supply system 400 of 4th Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. . Moreover, the broken line, the solid line, and the white line in FIG. 7 mean the same piping as FIG.

  The heat supply system 700 according to the seventh embodiment includes a heat exchanger, and is greatly different from the heat supply system 100 of the first embodiment in that heat is directly and indirectly exchanged between the compressed air and the heated object. Different. That is, as shown in FIG. 7, the heat supply system 700 includes an air compressor 410, a heat pump 120, a heat supply facility 140, and a heat exchanger 710.

  The heat exchanger 710 is disposed between the air compression mechanism 412 and the evaporator 122 in the compressed air flow path 460. In the present embodiment, the flow path 742 through which the heated body circulates branches into the branch flow paths 742 a and 742 b on the upstream side of the heat pump 120 and the heat exchanger 710. The branch flow path 742a passes through the heat exchanger 710, the branch flow path 742b passes through the condenser 126 of the heat pump 120, and the branch flow paths 742a and 742b merge on the upstream side of the heat supply facility 140.

  In the present embodiment, when the heated object passes through the branch flow path 742a, it directly exchanges heat with high-temperature compressed air in the heat exchanger 710, and when it passes through the branch flow path 742b, Heat exchange is performed with the compressed air whose temperature has decreased due to heat exchange in the exchanger 710 and the heat medium that has performed heat exchange. In other words, the heated object indirectly exchanges heat with compressed air in the condenser 126 via the heat pump 120. That is, in the heat supply system 700, both direct heating and indirect heating of the heated object with compressed air can be performed.

  Therefore, according to the above configuration, for example, if the temperature of the object to be heated is sufficient for direct heating, the heat pump is not operated, and if a higher temperature is required, the operation can be switched by heating via the heat pump. It becomes. In addition, it is also possible to produce an intermediate temperature heated body by mixing the directly heated body and the indirectly heated body. As a result, the operation of the heat pump can be reduced as much as possible, the power consumption can be further reduced, and the cooling efficiency of the compressed air can be further improved.

  As mentioned above, although the suitable Example of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  In the above-described embodiment, the configuration in which the object to be heated circulates between the condenser of the heat pump and the heat supply facility has been described. However, the present invention is not limited to this, and the object to be heated performs heat exchange in the condenser. It is not necessary to circulate to the condenser after being supplied to the heat supply facility. However, in that case, it is preferable that the heated object is continuously supplied to the condenser.

  The present invention can be used as a heat supply system that supplies heat used for industrial air conditioning, hot water supply, and the like.

DESCRIPTION OF SYMBOLS 100 ... Heat supply system, 110 ... Air compressor, 112 ... Air compression mechanism, 114 ... Tank, 120 * 120a * 120b ... Heat pump, 122 * 122a * 122b * 122c ... Evaporator, 124 ... Heat medium compressor, 126 * 126a, 126b, 126c ... condenser, 128 ... expansion valve, 140 ... heat supply equipment, 140a ... circulation piping, 200 ... heat supply system, 210a / 210b / 210c / 210d / 210e ... air compressor, 212a / 212b / 212c 212d, 212e ... air compression mechanism, 220 ... heat pump, 222a, 222b, 222c, 222d, 222e ... evaporator, 228a, 228b, 228c, 228d, 228e ... expansion valve, 230 ... tank, 300 ... heat supply system, 310 ... Air compressor, 312 ... Air compression mechanism, 3 2a ... Air compression mechanism casing, 314 ... Power supply device, 316 ... Lubricating oil device, 318 ... Electric motor casing, 320 ... Heat pump, 322a, 322b, 322c, 322d, 322e ... Evaporator, 400 ... Heat supply system, 410 ... Air compression 412 ... Air compression mechanism, 460 ... Flow path, 500 ... Heat supply system, 510 ... Air compressor, 512/514 ... Air compression mechanism, 600 ... Heat supply system, 620 ... Heat pump, 622a / 622b ... Evaporator, 628a, 628b ... expansion valve, 640 ... four-way valve, 700 ... heat supply system, 710 ... heat exchanger, 742 ... flow path, 742a, 742b ... branch flow path

Claims (12)

An air compressor having at least an air compression mechanism for compressing air and generating compressed air;
A heat pump having a condenser, an expansion valve, an evaporator, and a heat medium compressor, in which the heat medium circulates;
With
The evaporator is disposed on the downstream side of the air compression mechanism. In the evaporator, the compressed air and the heat medium exchange heat, and in the condenser, a heated object to be heated and the heat medium. And a heat supply system characterized by heat exchange.   The heat supply system according to claim 1, wherein the object to be heated is circulated and supplied to the condenser. A plurality of the air compressors are provided,
In the heat pump, a plurality of the evaporators are provided and connected in parallel, a plurality of the expansion valves are provided and connected to each of the plurality of evaporators,
The heat supply system according to claim 1, wherein each of the plurality of evaporators performs heat exchange with compressed air of the plurality of air compressors. A plurality of the heat pumps are provided,
The heat supply system according to claim 1, wherein the plurality of heat pumps are arranged in series with respect to the flow path of the compressed air. The air compressor is a two-stage compression air compressor having two air compression mechanisms in series,
The heat supply system according to claim 4, wherein the plurality of heat pumps are provided downstream of each of the two air compression mechanisms. In the heat pump, a plurality of the evaporators are provided and connected in parallel, a plurality of the expansion valves are provided and connected to each of the plurality of evaporators,
Any one of the plurality of evaporators exchanges heat with the compressed air, and the other evaporator exchanges heat with a member of the air compressor whose temperature rises. The heat supply system according to claim 1 or 2, characterized by the above-mentioned. The heat supply system further includes a heat exchanger provided between the air compression mechanism and the evaporator,
In the heat exchanger, the high-temperature compressed air and the heated object directly exchange heat,
The said condenser WHEREIN: The said compressed air with which temperature fell, and the said to-be-heated body indirectly heat-exchange through the said heat pump, The any one of Claims 1-6 characterized by the above-mentioned. Heat supply system. In the heat pump, a plurality of the evaporators are provided and connected in series, a plurality of the expansion valves are provided and connected to each of the plurality of evaporators,
The heat supply system further includes a switching valve that switches a flow direction of compressed air to the plurality of evaporators,
The heat supply system according to any one of claims 1 to 7, wherein the plurality of evaporators are alternately operated while switching the switching valve. In the case where there is one air compressor,
The frequency of the heat medium compressor is adjusted with reference to one or more of the motor frequency of the air compressor, the temperature of the compressed air at the outlet of the air compressor, and the temperature of the compressed air at the outlet of the evaporator. The heat supply system according to claim 1, claim 2, or claim 4. In the case where there are a plurality of the air compressors,
The frequency of the heat medium compressor is adjusted with reference to any one of a superheat degree of a heat medium at an inlet of the heat medium compressor or a saturation temperature of the heat medium. Heat supply system. In the case where the heat pump connects a plurality of evaporators in parallel, and the plurality of evaporators exchange heat with the compressed air and the member whose temperature rises,
The degree of opening of the expansion valve connected to each evaporator that exchanges heat with a member whose temperature rises refers to the temperature of the member that exchanges heat and the degree of superheat of the heat medium at the inlet of the heat medium compressor. The heat supply system according to claim 6, wherein the heat supply system is adjusted as follows.   The flow rate of the heated object is any one or more of the temperature of the heated object at the outlet of the condenser, the temperature of the heat medium at the outlet of the heat medium compressor, and the pressure of the heat medium at the outlet of the heat medium compressor. It is controlled using, The heat supply system of any one of Claims 1-11 characterized by the above-mentioned.

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