KR20210092106A - Environment-friendly, high-efficiency heat pump system with reduced energy and carbon emissions for both industrial steam, hot water and cold water - Google Patents

Abstract

The present invention relates to an environment-friendly high-efficiency heat pump apparatus with reduced energy and carbon emissions for all of industrial steam, hot water, and cold water, and a system using the same. More specifically, the present invention relates to a system which comprises: a heat pump apparatus which includes an outdoor unit and an indoor unit as well as other components including a compressor, first heat exchanger, expansion valve, and second heat exchanger, which configure a freezing cycle, and which also includes a four-way valve which converts a flow direction of a refrigerant and makes the apparatus available for converting between a cooling device or a heating device in a freezing cycle configured by the components, and which is able to circulate a heat medium between the outdoor unit and the indoor unit for taking heat away from water and generating cold water to be used and generating hot water by using the heat taken away from the water while generating the cold water; a water heat storage tank which stores a heat source supplied from the heat pump apparatus, generates hot water by using the water introduced by storing the heat taken away from the air, and generates cold water by using the water introduced by storing the cold air taken away from water; and a cold water tank which stores the cold water supplied from the heat pump apparatus, circulates the water by a circulation pump and a water supply pressurizing pump, and is connected to a cold water supply facility for each consumer of a target. Accordingly, the present invention is able to take heat away from the heat pump apparatus using the air heat and water, generates cold water, and generates hot water for free by using the condensed temperature of the heat exchanger, which is generated while generating the cold water, and supply the cold water, hot water, and steam to an existing industrial business.

Description

Eco-friendly, high-efficiency heat pump system with reduced energy and carbon emissions for both industrial steam, hot water and cold water }

The present invention relates to a heat pump device and a system using the same, and more particularly, by applying a large-capacity air heat pump to a facility system of an existing industry using the condensation temperature of a heat exchanger generated during cold water production, steam, hot and cold water It relates to an eco-friendly, high-efficiency heat pump device that can produce and supply industrial steam, hot water, and cold water for free, energy saving and carbon emission reduction, and a system using the same.

In general, boilers include hot water boilers, steam boilers, and heating medium boilers.

1 shows the configuration of a facility system for producing cold water, hot water, and steam of an existing industry.

Water stored in tap water or underground water tanks is supplied to the place of use by producing hot water or steam heated at 103℃ or higher by means of a gas boiler. After the heated steam has transferred a certain amount of heat, the steam turns into condensed water. It is the condensate tank that stores it. The reason for installing this condensate tank is that if steam is consumed continuously, water, which is the source of steam, is continuously needed. To save it, it is collected and used again.

Another reason is that steam comes out when water is continuously supplied to the steam boiler. At this time, assuming that the water temperature is room temperature, a large amount of heat source (energy value) is required to raise it to the steam generation temperature.

However, if the condensed water recovered is used, the intrinsic temperature of the condensed water can be used as it is, so energy can be saved.

On the other hand, cold water is supplied with water at room temperature from tap water or an underground water tank, and a chiller is operated to produce cold water to supply cold water of 0 to 7°C.

In this type of prior art, there is a problem in that each energy is excessively consumed in order to supply hot water, steam, and cold water.

Therefore, the problem to be solved by the present invention is an eco-friendly, high-efficiency heat of industrial steam, hot water, and cold water combined with energy saving and carbon emission reduction that uses air heat (sensible heat and latent heat) and water of infinite natural energy regardless of the season To provide a pump device and a system using the same.

In addition, another problem to be solved by the present invention is to take heat from water in summer to produce cold water at 5-7 ℃ and use it for cooling, and to use the heat taken while producing cold water to produce hot water at the same time. It is a system that acquires heat from air in winter to produce hot water of 55~60℃, and uses steam, hot water, and cold water for space heating, floor heating, and hot water supply (hot water). Eco-friendly high efficiency of energy saving and carbon emission reduction To provide a heat pump device and a system using the same.

In addition, another problem to be solved by the present invention is to take heat from air heat (sensible heat and latent heat) and make cold water and hot water in the shrinkage heat (cooling or heat storage) tank based on (ΔT15~23℃) for cooling, heating, and hot water supply ( It is to provide an eco-friendly, high-efficiency heat pump device that can simultaneously solve industrial steam, hot water, and cold water, energy saving and carbon emission reduction, and a system using the same.

An eco-friendly, high-efficiency heat pump device for energy saving and carbon emission reduction for industrial steam, hot water, and cold water combined use and a system using the same according to an embodiment of the present invention for solving these technical problems includes an outdoor unit and an indoor unit, a compressor, a first It includes components constituting a refrigeration cycle such as a heat exchanger, an expansion valve, and a second heat exchanger, and converts the flow direction of the refrigerant in the refrigeration cycle implemented by the components to enable conversion to a cooling or heating device a heat pump device having a four-way valve that circulates between the outdoor unit and the indoor unit, and takes heat from the water to produce and use cold water, and to produce hot water using the heat taken while producing cold water; Storing the heat source supplied from the heat pump device, taking heat from the air and storing hot heat to produce hot water, and taking heat from water and storing cold air to produce cold water. storage tank; and a cold water tank in which the cold water supplied from the heat pump device is stored, circulated by a circulation pump and a water supply pressure pump, and connected to a cold water supply facility for each use of an object.

And, the heat shrink tank according to the present invention includes an upper hot water pipe passing through an upper part of the inner space of the heat shrink tank; a lower cold water pipe passing through a lower part of the internal space of the heat shrink tank; a piping line having one end connected to the outlets of the upper hot water pipe and the lower cold water pipe, and the other end being connected to the water supply facility of the object to discharge cooling and heating water; and a water supply pipe connected to the inlets of the upper hot water pipe and the lower cold water pipe and supplied with water from the other end.

And, by storing the energy produced in the heat shrink tank according to a preferred embodiment of the present invention, a cooling and heating heat source is supplied to an object as needed, and a shortage of the heat source taken away from the energy returned after supply is produced and stored again or It is more preferable to perform storage cooling.

And, it is more preferable that the heat shrink tank according to a preferred embodiment of the present invention produces cold water of 5 to 7° C. at the same time by using the cold heat taken during the production of hot water.

And, it is more preferable that the heat shrink tank according to a preferred embodiment of the present invention produces hot water of 55 to 60° C. at the same time by using the heat taken during the production of cold water.

As described above, according to the present invention, it takes heat from the heat pump device using air heat (sensible heat and latent heat) and water, which are infinite natural energy, produces cold water at 5 ~ 7 ℃, stores it in a cold water tank, and supplies cold water to existing industries In addition, there is an effect that hot water can be produced free of charge using the condensation temperature of the heat exchanger generated during cold water production and supplied as hot water and steam of existing industries.

In addition, according to the present invention, when producing cold water, regardless of the outside temperature, the temperature of 5 ~ 7 ℃ cold water is maintained and produced, and at the same time, hot water of about 50 ~ 55 ℃ is produced free of charge, and the hot water is stored in the heat storage tank for free. There is a usable effect.

In addition, according to the present invention, a heat pump device, a heat shrink tank, and a cold water tank are configured to store the energy produced in the heat shrink tank and the cold water tank, thereby maximizing the energy efficiency of supplying a cold water and hot water heat source to a place of use according to need. There is an effect of providing an eco-friendly, high-efficiency, large-capacity heat pump device and a system using the same.

1 is a configuration diagram of a facility system for producing cold water, hot water, and steam of a conventional conventional industry;
2 is a schematic diagram showing an eco-friendly high-efficiency heat pump device for industrial steam, hot water, and cold water combined energy saving and carbon emission reduction and a system using the same for both cooling, heating and hot water supply according to the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

First, an eco-friendly, high-efficiency heat pump device for industrial steam, hot water, and cold water combined energy saving and carbon emission reduction and a system using the same according to an embodiment of the present invention will be described in detail with reference to FIG. 2 .

2 is an eco-friendly, high-efficiency heat pump device for energy saving and carbon emission reduction combined with industrial steam, hot water, and cold water according to the present invention, and a system diagram for combined cooling, heating and hot water supply of a system using the same.

Referring to FIG. 2 , the present invention includes a heat pump device 10 , a heat shrink tank 20 for storing the heat source supplied from the heat pump device 10 , and a cold water tank 50 .

First, the heat pump device 10 is provided with an indoor unit and an outdoor unit, and although the internal configuration is not shown, it may be composed of a compressor, a heat exchanger, an expansion valve, and an evaporator, and a refrigerant is contained therein. The compressor compresses the gaseous refrigerant into a high-temperature and high-pressure gas and sends it to the condenser, the condenser cools the compressed refrigerant sent from the compressor to liquefy it, and expands the refrigerant liquefied in the condenser through the expansion valve while expanding the evaporator In the evaporator, the injected refrigerant rapidly expands and evaporates while taking heat from the surrounding heat, that is, the cooling circuit. Through the above process, the evaporator makes cold water, and the condenser heats the hot water using the heat emitted.

Next, the heat shrink tank 20 includes an upper hot water pipe 22 passing through the upper part of the internal space of the tank, and a lower cold water pipe 24 passing through the lower part of the internal space of the heat shrink tank 20, One end is connected to the outlet of the upper hot water pipe 22 and the lower cold water pipe 24, and the other end is connected to the water supply facility of the facility section 100 of the existing industry, a piping line for discharging cooling and heating water 30 and a water supply pipe 40 connected to the inlet of the upper hot water pipe 22 and the lower cold water pipe 24 and supplied with water supply of 15° C. or higher from the other end.

The upper hot water pipe 22 is installed to pass through the upper part of the inner space of the heat shrink tank 20 , and the lower cold water pipe 24 is installed to pass through the lower part of the inner space of the heat shrink tank 20 . The upper hot water pipe 22 and the lower cold water pipe 24 each pass through one side of the heat shrink tank 20, and the upper hot water pipe 22 and the lower cold water pipe 24 passed through and leaked to the outside. The outlet of the check valve 26, the in-line pump 28 and the pipe line 30 are respectively connected.

The upper hot water pipe 22 and the lower cold water pipe 24 heat or cool the water flowing through the upper hot water pipe 22 and the lower cold water pipe 24 through heat exchange in the heat shrink tank 20, respectively, so that the To be able to supply hot water or cold water to the facility section 100 .

The water supply pipe 40 is connected to the inlets of the upper hot water pipe 22 and the lower cold water pipe 24 , and serves to supply water to the upper hot water pipe 22 and the lower cold water pipe 24 .

The piping line 30 is connected to the outlets of the upper hot water pipe 22 and the lower cold water pipe 24, and heat-exchanged hot or cold water in the upper hot water pipe 22 or the lower cold water pipe 24 is supplied to the existing industry ( 100) serves to supply

As described above, in the water stored in the heat shrink tank 20, warm water rises to the upper part and cold water settles to the lower part due to the density difference according to the temperature, so the larger the size of the heat shrink tank 20, the higher the temperature. The temperature difference in the lower part appears to be extreme. Therefore, it is possible to maximize the efficiency of heat transfer by allowing the upper hot water pipe 22 and the lower cold water pipe 24 to pass through the upper part and the lower part of the internal space of the heat shrink tank 20, respectively.

Next, in the cold water tank 50, the water supplied from the heat pump device 10 is converted into 7 to 10° C. cold water and stored, and circulated by the circulation pump 52 and the water supply pressure pump 54, so that the existing industry ( It is connected to the cold water supply facility 110 of 100). Therefore, it can be used as cooling of the existing industry 100 .

Hereinafter, the operation of the present invention having the above configuration will be described.

In the case of hot water, the hot water heated to a constant temperature in the condenser of the heat pump device 10 is stored in the heat shrink tank 20 . The temperature of the upper part and the lower part of the heat shrink tank 20 is much higher than the temperature of the lower part by the density difference according to the temperature of the water. Therefore, when water flows from the water supply pipe 40 into the upper hot water pipe 22 installed to pass through the upper part of the inner space of the heat shrink tank 20, it indirectly exchanges heat with the hot water stored in the heat shrink tank 20 to make the inflow. water is heated

By installing the hot water pipe 22 in the upper part of the heat shrink tank 20, heat exchange with the hot water stored at the hottest point among the hot water stored in the heat shrink tank 20 is made, so that the introduced water is heated more efficiently. can Water heated to 55 to 60° C. is supplied to the facility section 100 of the existing industry through the pipe line 30 connected to the outlet.

In the case of cold water, the cold water cooled by the evaporator of the heat pump device 10 is stored in the heat shrink tank 20, and as described above, the temperature of the lower part of the heat shrink tank 20 is much lower than the temperature of the upper part. Therefore, when water flows into the lower cold water pipe 24 installed to pass through the lower part of the internal space of the heat shrink tank 20 , the water introduced from the water supply pipe 40 can be cooled more efficiently. Water cooled to 5 to 7 ℃ is supplied to the facility section 100 of the existing industry through the pipe line 30 connected to the outlet.

On the other hand, in the case of cold water supplied to the existing industry 100, it takes heat from the heat pump device 10 using air heat (sensible heat and latent heat) and water, which are infinite natural energy, and cold water of 5 to 7 ℃ uses no fossil fuels at all. It is converted, produced, and stored in the cold water tank 50 , and is circulated by the circulation pump 52 and the water supply pressure pump 54 , and is connected to the cold water supply facility 110 of the existing industry 100 of the object.

According to the first embodiment according to the present invention, during heating, the water converted into hot water by the heat pump device 10 is supplied to the heat shrink tank 20 through the upper hot water pipe 22 on one side, and the heat shrinkage The high-temperature hot water in the upper part of the tank 20 is delivered to the gas boiler 120 of the existing industry 100 through the upper hot water pipe 22 on the other side to produce heated steam of 103° C. or higher, and the existing industry 100 The low-temperature hot water supplied with heat along the piping line and finished circulating is a flow that returns to the lower part of the heat shrink tank 20 by the in-line pump 28 again.

The present invention takes heat from air heat (sensible heat and latent heat), heat exchanges water flowing in from the heat shrink tank 20, and sends it back to the heat shrink tank 20, ΔT 15 ~ 23 ℃ 7.5Ton/h in winter can produce hot water, and 23 ~ 25 tons of cold water can be produced based on ΔT 5℃. Cold water (5 ~ 7℃) can be produced at the same time by using the cold heat taken during the production of hot water, and it is a very efficient machine that simultaneously produces hot water (55 ~ 60℃) using the heat taken during the production of cold water.

In addition, by storing the energy (kcal) produced in the heat shrink tank 20, cooling and heating heat sources (kcal) are supplied to the existing industry 100 as needed, and the energy returned after supplying the existing industry 100 It is a system that maximizes energy efficiency by producing the shortfall of the stolen heat source (ΔT 13 ~ 17℃) and re-storing or cooling it.

In addition, it takes heat from the heat pump device 10 using air heat (sensible heat and latent heat) and water, which are infinite natural energy, and produces cold water at 5 to 7 ° C. .

As such, in the present invention, the required energy source (100%) is made by consuming 75% of the air heat source (sensible heat and latent heat) and 25% of the electricity required to drive the machinery, so it does not use any fossil fuels at all and produces energy only by supplying constant power. It is an eco-friendly energy device.

As described above, the eco-friendly, high-efficiency heat pump device for industrial steam, hot water, and cold water combined energy saving and carbon emission reduction and a system using the same according to the present invention is a heat pump device (10) capable of realizing both the refrigeration cycle and its reverse cycle And, it is a useful invention that can be supplied in connection with the system of cold water, hot water and steam production of the existing industry 10 as a form of a heat shrink tank 20 and a cold water tank 50 .

The embodiments of the eco-friendly and high-efficiency heat pump device for industrial steam, hot water, and cold water combined energy saving and carbon emission reduction and a system using the same according to the present invention are presented for illustrative purposes only to help the understanding of the present invention It is not limited, and those of ordinary skill in the art to which the present invention pertains will be able to make various changes and implementations within the scope of the technical idea described in the appended claims.

10. Heat pump system 20. Shrink heat tank
22. Upper hot water pipe 24. Lower cold water pipe
26. Check valve 28. Inline pump
30. Piping line 40. Water supply pipe
50. Cold water tank 52. Water supply pressure pump
52. Circulation pump 100. Object
110. Air conditioning 120. Steam or hot water

Claims (5)

It includes an outdoor unit and an indoor unit, and includes components constituting a refrigeration cycle, such as a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger, and switches the flow direction of a refrigerant in a refrigeration cycle implemented by the components. It is equipped with a four-way valve that enables switching to cooling or heating equipment, and a heating medium circulates between the outdoor and indoor units to take heat from the water and produce and use cold water at 5 ~ 7℃, producing cold water a heat pump device 10 for producing hot water of 55 to 60° C. using the heat taken while;
Stores the heat source supplied from the heat pump device 10, takes heat from the air to store hot warmth to produce hot water, and takes heat from water to store cold air and converts the incoming water into cold water. Produced heat-shrink tank (20); and
The cold water supplied from the heat pump device 10 is stored, and the cold water tank 50 is circulated by the circulation pump 52 and the water supply pressure pump 54 and is connected to the cold water supply facility for each use of the object. Eco-friendly, high-efficiency heat pump device and system using the same for industrial steam, hot water, and cold water combined energy saving and carbon emission reduction According to claim 1, wherein the heat shrink tank (20)
an upper hot water pipe 22 passing through an upper portion of the internal space of the heat shrink tank 20;
a lower cold water pipe 24 passing through the lower part of the internal space of the heat shrink tank 20;
One end is connected to the outlet of the upper hot water pipe 22 and the lower cold water pipe 24, the other end is connected to the water supply facility of the object, the piping line 30 for discharging cooling and heating water; and
It is connected to the inlet of the upper hot water pipe 22 and the lower cold water pipe 24, and the water supply pipe 40 to which water is supplied from the other end. Industrial steam, hot water, and cold water combined energy saving and Eco-friendly, high-efficiency heat pump device with reduced carbon emission and a system using the same. The method of claim 1,
Storing the energy produced in the heat shrink tank 20, supplying a cooling/heating heat source to an object as needed, and producing the shortfall of the lost heat source of the energy returned after supply to store or cool again. Eco-friendly, high-efficiency heat pump device and system using the same for industrial steam, hot water and cold water energy saving and carbon emission reduction. According to claim 1, wherein the heat shrink tank (20)
An eco-friendly, high-efficiency heat pump device and system using the same for industrial steam, hot water and cold water combined energy saving and carbon emission reduction, characterized in that it produces cold water of 5 to 7°C at the same time using the cold heat taken during hot water production. According to claim 1, wherein the heat shrink tank (20)
An eco-friendly, high-efficiency heat pump device and system using the same for industrial steam, hot water and cold water combined energy saving and carbon emission reduction, characterized in that it simultaneously produces hot water of 55 to 60°C using the heat taken during cold water production.

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