KR20100072926A - The ice-cycle system of waste heat recovery system - Google Patents

The ice-cycle system of waste heat recovery system Download PDF

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Publication number
KR20100072926A
KR20100072926A KR1020080131478A KR20080131478A KR20100072926A KR 20100072926 A KR20100072926 A KR 20100072926A KR 1020080131478 A KR1020080131478 A KR 1020080131478A KR 20080131478 A KR20080131478 A KR 20080131478A KR 20100072926 A KR20100072926 A KR 20100072926A
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South Korea
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pipe
cooling water
heat
condenser
heat recovery
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KR1020080131478A
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Korean (ko)
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KR101043034B1 (en
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전후식
권성중
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피엔케이엔지니어링(주)
전후식
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/24—Refrigeration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/002—Compression machines, plants or systems with reversible cycle not otherwise provided for geothermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • Y02A40/963—Off-grid food refrigeration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85—Food storage or conservation, e.g. cooling or drying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

PURPOSE: A waste heat recovery system of a refrigerating system is provided to collect waste heat which discharged from the condenser of a refrigerating system and perform heating by circulating the collected waste heat to a heating device. CONSTITUTION: A waste heat recovery system of a refrigerating system comprises: a heat exchange system(110) which comprises a circulating pipe(111) wherein cooling water circulates along the circulating pipe, a first pipe(113) which is connected to the circulating pipe and discharges the cooling water heat-exchanged through a condenser, a cooling tower(115) which heat-exchanges the cooling water discharged through the first pipe, and a second pipe(117) which discharges the cooling water heat-exchanged in the cooling tower to the circulating pipe; and a heat recovery system(120) which comprises a heater(121) which diverges the cooling water discharged through the first pipe and proceeds heating by collecting the heat of the diverged cooling water. The heat recovery system re-circulates the cooling water heat-exchanged through the heater.

Description

냉동시스템의 폐열회수 시스템{The ice-cycle system of waste heat recovery system}The ice-cycle system of waste heat recovery system

본 발명은 냉동시스템의 폐열회수 시스템에 관한 것으로, 더욱 상세하게는 쇼케이스에 냉기를 공급하는 냉동시스템의 폐열을 이용하여 난방이 가능하도록 구성한 냉동시스템의 폐열회수 시스템에 관한 것이다.The present invention relates to a waste heat recovery system of a refrigeration system, and more particularly, to a waste heat recovery system of a refrigeration system configured to enable heating using waste heat of a refrigeration system for supplying cold air to a showcase.

일반적으로, 대형 마트의 냉장/냉동식품을 전시하기 위해 쇼케이스가 마련되어 있다. 이처럼, 상단이 개구된 쇼케이스에는 적어도 하나 이상의 냉방기가 구비되어 있다. 이러한, 냉방기에서 분사되는 냉기가 쇼케이스 내부의 온도를 적정온도로 낮추어 쇼케이스 내부에 냉장/냉동식품들을 전시시 신선도가 유지되도록 계절과 상관없이 지속적으로 가동하고 있다.Generally, showcases are set up to display refrigerated / frozen foods in large supermarkets. As such, at least one cooler is provided in the showcase having the top open. The cold air sprayed from the air conditioner lowers the temperature inside the showcase to an appropriate temperature and continuously operates regardless of the season so as to maintain freshness when displaying refrigerated / frozen foods inside the showcase.

상기와 같은 기능을 수행하는 냉동시스템은 냉매가스를 압축하는 압축기와, 상기 압축기에 연결된 응축기와, 상기 응축기에 연결된 팽창밸브와, 상기 팽창밸브에 연결된 증발기를 포함하여 이루어져 있다. The refrigeration system performing the above function comprises a compressor for compressing the refrigerant gas, a condenser connected to the compressor, an expansion valve connected to the condenser, and an evaporator connected to the expansion valve.

여기서 팽창밸브와 증발기를 포함하여 실내기를 구성하고, 상기 압축기와 응축기를 포함하여 실외기를 구성하게 된다.In this case, the indoor unit is configured to include an expansion valve and an evaporator, and the outdoor unit is configured to include the compressor and the condenser.

이와 같은, 구조로 되어 있는 종래의 냉동시스템은 도 1에 도시한 바와 같이, 증발기 17에서 열교환된 저온저압의 냉매가스가 압축기 11를 통과하면서 고온고압의 냉매가스로 전환되고, 이것이 응축기 13에 유입되어 순환될 때 액체상태로 응축되면서 외부로 열을 방출하게 되는데 이때 팬에서 토출된 바람이 냉매액의 열을 낮춰주고, 상기 응축기 13를 통과하여 액체상태의 고온고압 냉매액이 팽창밸브 15를 지나면서 저온저압으로 변화되고, 상기 저온저압 상태의 냉매액이 증발기 17 내로 유입되어 증발하면서 외부의 열을 빼앗아 열교환을 일으키고, 상기 증발기 17에서 열교환된 저온저압의 냉매가스가 다시 압축기 11로 보내지게 되는 반복 순환만을 한다.In the conventional refrigeration system having such a structure, as shown in FIG. 1, the low-temperature low-pressure refrigerant gas heat-exchanged in the evaporator 17 is converted into the high-temperature high-pressure refrigerant gas while passing through the compressor 11, which flows into the condenser 13. When the water is circulated, the liquid is condensed in the liquid state to release heat to the outside. At this time, the wind discharged from the fan lowers the heat of the refrigerant liquid, and the high temperature and high pressure refrigerant liquid in the liquid state passes through the expansion valve 15 through the condenser 13. The low temperature and low pressure change, the refrigerant liquid in the low temperature low pressure state is introduced into the evaporator 17 to take heat from the outside while evaporating to cause heat exchange, and the low temperature low pressure refrigerant gas heat exchanged in the evaporator 17 is sent back to the compressor 11 Only cycle.

그런데 종래의 기술구성은 다음과 같은 문제점이 있었다.However, the prior art configuration has the following problems.

상기, 응축기에 순환되는 냉매를 열교환시 팬을 이용하기 때문에 응축기의 폐열을 재활용할 수 없게 되는 문제점이 있었다.Since the fan is used for heat exchange of the refrigerant circulated in the condenser, there is a problem in that waste heat of the condenser cannot be recycled.

또한 쇼케이스에 냉기를 공급하기 위한 냉동시스템에 각각의 응축기를 설치해야 하는 문제점이 있었다.In addition, there was a problem that each condenser must be installed in the refrigeration system for supplying cold air to the showcase.

본 발명의 목적은 상기와 같은 종래의 문제점을 해소하기 위해 안출된 것으 로, 쇼케이스에 냉기를 공급하는 냉동시스템의 폐열을 이용하여 난방이 가능하도록 제공하는 데 있다.An object of the present invention is to devise to solve the conventional problems as described above, to provide a heating using the waste heat of the refrigeration system for supplying cold air to the showcase.

또한, 본 발명의 다른 목적은 적어도 하나 이상의 응축기를 동시에 열교환이 가능하도록 하는 데 있다.In addition, another object of the present invention is to allow at least one condenser to exchange heat simultaneously.

이와 같은 목적을 달성하기 위하여 본 발명은 저온저압의 냉매가스를 고온고압으로 압축하는 압축기와, 상기 압축기에 연결되어 고온고압의 냉매가스를 고온고압의 냉매액으로 바꿔주는 응축기와, 상기 응축기에 연결되어 고온고압의 냉매액을 저온저압의 냉매액으로 바꿔주는 팽창밸브와, 상기 팽창밸브에 연결되어 순환되는 저온저압의 냉매액이 쇼케이스의 열을 흡수하여 저온저압의 냉매가스로 바꿔주는 증발기로 이루어진 냉동시스템에 있어서, 상기 응축기에 순환되는 고온고압의 냉매의 온도를 낮추기 위해 응축기 내부에 냉각수가 순환되는 순환관이 마련되고, 상기 순환관에 연결되어 상기 응축기를 통해 열교환된 냉각수가 토출되는 제1파이프가 연결되며, 상기 제1파이프를 통해 토출된 냉각수를 열교환시키는 냉각탑이 마련되고, 상기 냉각탑에서 열교환된 냉각수를 상기 순환관으로 토출시키는 제2파이프로 이루어진 열교환시스템과, 상기 제1파이프를 통해 토출된 냉각수를 분기시키고, 분기된 냉각수의 열을 회수하여 난방이 가능하도록 한 난방기가 마련되며, 상기 난방기를 통해 열교환된 냉각수를 다시 순환시키도록 이루어진 열회수시스템으로 구성된 것을 그 기술적 구성상의 기본 특징으로 한다.In order to achieve the above object, the present invention provides a compressor for compressing a low temperature low pressure refrigerant gas at high temperature and high pressure, a condenser connected to the compressor to convert a high temperature high pressure refrigerant gas into a high temperature high pressure refrigerant liquid, and connected to the condenser. Expansion valve for converting a high temperature and high pressure refrigerant liquid into a low temperature and low pressure refrigerant liquid, and an evaporator for cooling the low temperature low pressure refrigerant liquid circulated in connection with the expansion valve to convert the refrigerant into a low temperature low pressure refrigerant gas. In the refrigerating system, a circulation pipe through which cooling water is circulated in the condenser is provided to lower the temperature of the high temperature and high pressure refrigerant circulated in the condenser, and the first cooling water discharged through the condenser is connected to the circulation pipe. A pipe is connected, and a cooling tower is provided to heat exchange the cooling water discharged through the first pipe. A heat exchange system comprising a second pipe for discharging the cooling water heat-exchanged in each tower to the circulation pipe, and a heater for branching the cooling water discharged through the first pipe and recovering the heat of the branched cooling water to enable heating. In addition, the technical features of the heat recovery system consisting of a heat recovery system configured to circulate again the heat-exchanged cooling water through the heater.

본 발명에 따르면, 상기 열회수시스템은, 상기 제1파이프를 통해 토출되어 분기된 냉각수가 상기 난방기에 공급되도록 제1파이프와 난방기의 일측을 연결하는 제3파이프가 마련되고, 상기 난방기의 타측에 난방기 내부를 순환하여 열교환된 냉각수가 토출되는 제4파이프가 연결된 것을 특징으로 한다.According to the present invention, the heat recovery system is provided with a third pipe connecting the first pipe and one side of the heater so that the cooling water discharged and branched through the first pipe is supplied to the heater, the heater on the other side of the heater It is characterized in that the fourth pipe is circulated inside the discharged cooling water discharged.

본 발명에 따르면, 상기 제4파이프와 제2파이프를 연결하는 제5파이프를 마련하여 제4파이프를 통해 토출된 냉각수가 제2파이프로 합류될 수 있도록 한 것을 더 포함한다.According to the present invention, the method further includes providing a fifth pipe connecting the fourth pipe and the second pipe to allow the cooling water discharged through the fourth pipe to be joined to the second pipe.

본 발명에 따르면, 상기 제2파이프와 연통되게 연결시켜 냉각수를 순환시키는 펌프가 더 포함된 것을 특징으로 한다.According to the invention, it is characterized in that it further comprises a pump connected to communicate with the second pipe to circulate the cooling water.

본 발명에 따르면, 상기 제1파이프를 통해 토출된 냉각수를 제3파이프로 분기시키는 것을 선택적으로 조절하는 제1밸브가 더 포함된 것을 특징으로 한다.According to the invention, it is characterized in that it further comprises a first valve for selectively controlling the branching of the cooling water discharged through the first pipe to the third pipe.

본 발명에 따르면, 상기 제4파이프를 통해 토출된 냉각수를 제1파이프로 합류시키거나 제5파이프로 분기되도록 조절하는 제2밸브가 더 포함된 것을 특징으로 한다.According to the present invention, it is further characterized by further comprising a second valve for controlling the cooling water discharged through the fourth pipe to be joined to the first pipe or branched to the fifth pipe.

본 발명에 따르면, 상기 제4파이프를 통해 토출된 냉각수를 제2파이프로 합류시키는 것을 선택적으로 조절하는 제3밸브가 더 포함된 것을 특징으로 한다.According to the invention, it is characterized in that it further comprises a third valve for selectively controlling the joining of the cooling water discharged through the fourth pipe to the second pipe.

상술한 바와 같이, 본 발명의 냉동시스템의 폐열회수 시스템은 쇼케이스에 냉기를 공급하는 냉동시스템의 응축기에서 방출되는 폐열을 순환관으로 회수하고 회수된 폐열을 난방기에 순환시켜 난방이 가능하도록 함으로 인해, 난방기를 가동하기 위한 에너지가 절약되는 효과가 있다.As described above, the waste heat recovery system of the refrigeration system of the present invention recovers the waste heat discharged from the condenser of the refrigeration system for supplying cold air to the showcase to the circulation pipe and circulates the recovered waste heat to the heater to enable heating. There is an effect of saving energy for operating the heater.

더불어, 본 발명의 냉동시스템의 폐열회수 시스템은 적어도 하나 이상의 응축기에 구비된 순환관에 냉각수를 순환시켜 적어도 하나 이상의 응축기를 동시에 열교환이 가능하도록 하여 냉동시스템의 효율이 증가되는 효과가 있다.In addition, the waste heat recovery system of the refrigerating system of the present invention has the effect of increasing the efficiency of the refrigerating system by allowing the at least one condenser to exchange heat at the same time by circulating the cooling water in the circulation pipe provided with at least one condenser.

그리고, 본 발명의 냉동시스템의 폐열회수 시스템은 폐열회수시스템과 냉각탑으로 순환되는 냉각수의 방향을 선택적으로 조절하는 밸브를 마련하여, 계절에 따른 온도변화에 맞춰 불필요하게 가동되는 시스템을 정지시켜 에너지가 낭비되는 것을 방지하는 효과가 있다.In addition, the waste heat recovery system of the refrigerating system of the present invention provides a valve for selectively controlling the direction of the coolant circulated to the waste heat recovery system and the cooling tower, so that energy is stopped by stopping the system that is unnecessarily operated according to the temperature change according to the season. It is effective to prevent waste.

이하 본 발명에 첨부된 도면을 참조하여 본 발명의 바람직한 일실시 예를 상세히 설명하기로 한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

우선, 도면들 중, 동일한 구성요소 또는 부품들은 가능한 동일한 참조부호로 나타내고 있음에 유의하여야 한다. 본 발명을 설명함에 있어, 관련된 공지기능 혹은 구성에 대한 구체적인 설명은 본 발명의 요지를 모호하지 않기 위하여 생략한다.First, in the drawings, the same components or parts are to be noted that the same reference numerals as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

도 1은 종래의 냉동시스템을 나타낸 흐름도이고, 도 2는 본 발명인 냉동시스템의 폐열회수 시스템을 나타낸 배치도이며, 도 3a은 본 발명인 냉동시스템의 폐열회수 시스템의 1실시예를 나타낸 흐름도이고, 도 3b은 본 발명인 냉동시스템의 폐 열회수 시스템의 2실시예를 나타낸 흐름도이며, 도 3c은 본 발명인 냉동시스템의 폐열회수 시스템의 3실시예를 나타낸 흐름도이다.Figure 1 is a flow chart showing a conventional refrigeration system, Figure 2 is a layout showing the waste heat recovery system of the present invention refrigeration system, Figure 3a is a flow chart showing an embodiment of the waste heat recovery system of the present invention refrigeration system, Figure 3b Figure 2 is a flow chart showing two embodiments of the waste heat recovery system of the present invention refrigeration system, Figure 3c is a flow chart showing three embodiments of the waste heat recovery system of the present invention refrigeration system.

먼저, 도 2에 나타낸 바와 같이, 본 발명에 따른 냉동시스템의 폐열회수 시스템의 구성상태를 살펴보면, 냉동시스템 10의 응축기 13에 냉각수(높은 열을 내는 기계를 차게 식히는 데 쓰는 물)를 순환시켜 냉매의 열을 열교환시키는 열교환시스템 110과, 상기 열교환시스템 110을 통해 열교환된 냉각수의 열을 회수하는 열회수시스템 120으로 구성한다.First, as shown in Figure 2, looking at the configuration of the waste heat recovery system of the refrigerating system according to the present invention, the refrigerant by circulating the cooling water (water used to cool the machine that generates high heat) to the condenser 13 of the refrigerating system 10 And a heat recovery system 120 for recovering heat of the coolant heat exchanged through the heat exchange system 110.

본 발명에 따른 냉동시스템의 폐열회수 시스템에 대하여 보다 상세하게 살펴보면 다음과 같다.Looking at the waste heat recovery system of the refrigeration system according to the present invention in more detail.

먼저, 냉동시스템 10을 설명하면 도 1에 도시한 바와 같이, 증발기 17에서 열교환된 저온저압의 냉매가스가 압축기 11를 통과하면서 고온고압의 냉매가스로 전환되고, 이것이 응축기 13에 유입되어 순환될 때 액체상태로 응축되면서 외부로 열을 방출하게 되는데 이때 팬에서 토출된 바람이 냉매액의 열을 낮춰주고, 상기 응축기 13를 통과하여 액체상태의 고온고압 냉매액이 팽창밸브 15를 지나면서 저온저압으로 변화되고, 상기 저온저압 상태의 냉매액이 증발기 17 내로 유입되어 증발하면서 외부의 열을 빼앗아 열교환을 일으키고, 상기 증발기 17에서 열교환된 저온저압의 냉매가스가 다시 압축기 11로 보내지게 되는 반복 순환을 한다.First, referring to the refrigeration system 10, as shown in Figure 1, when the low-temperature low-temperature refrigerant gas heat exchanged in the evaporator 17 is converted into a high-temperature high-pressure refrigerant gas while passing through the compressor 11, it is introduced into the condenser 13 and circulated As the liquid condenses, the heat is released to the outside. At this time, the wind discharged from the fan lowers the heat of the refrigerant liquid, and the high temperature and high pressure refrigerant liquid in the liquid state passes through the expansion valve 15 to the low temperature and low pressure through the condenser 13. The refrigerant liquid in the low temperature and low pressure state is introduced into the evaporator 17 to take heat from the outside while evaporating, thereby causing heat exchange, and the low temperature and low pressure refrigerant gas heat exchanged in the evaporator 17 is repeated to the compressor 11.

여기서, 쇼케이스에 냉기를 공급하는 냉동시스템 10의 응축기 13에서 방출되는 열을 열교환하는 열교환시스템 110과 상기 열교환시스템 110을 통해 열교환된 냉각수의 열을 회수하는 열회수시스템 120을 구비하여 응축기 13에서 방출되는 폐 열을 난방기 121에 순환시켜 난방이 가능하도록 함으로 인해, 난방기 121를 가동하기 위한 에너지가 절약된다.Here, the heat discharge system 110 for heat-exchanging the heat discharged from the condenser 13 of the refrigeration system 10 for supplying cold air to the showcase and the heat recovery system 120 for recovering heat of the cooling water heat exchanged through the heat exchange system 110 is discharged from the condenser 13 By circulating the waste heat to the heater 121 to enable heating, energy for operating the heater 121 is saved.

특히, 열교환시스템 110은 순환관 111, 제1파이프 113, 냉각탑 115, 제2파이프 117로 이루어져 있다.In particular, the heat exchange system 110 is composed of a circulation pipe 111, the first pipe 113, the cooling tower 115, the second pipe 117.

여기서, 순환관 111은 응축기 13에 순환되는 고온고압의 냉매가스가 액체상태로 응축되면서 외부로 열을 방출하는데, 이때 응축기 13에 냉매가스가 순환되는관의 외부를 감싸는 순환관 111에 냉각수를 순환시켜 냉매액에서 방출되는 열을 냉각수가 회수하게 된다.Here, the circulation pipe 111 discharges heat to the outside as the high-temperature, high-pressure refrigerant gas circulated in the condenser 13 in a liquid state, and at this time, the cooling water is circulated in the circulation pipe 111 surrounding the outside of the pipe where the refrigerant gas is circulated in the condenser 13 The cooling water is recovered by the heat discharged from the refrigerant liquid.

이때, 순환관 111의 배치상태는 냉매가 순환되는 관을 감싸는 것이 바람직하나 교차 또는 이격되게 배치되는 등과 같이 순환관 111의 배치상태는 설치환경에 따라 다양하게 변화가 가능하다.At this time, the arrangement state of the circulation tube 111 is preferably wrapped around the tube through which the refrigerant is circulated, such that the arrangement state of the circulation tube 111 can be changed in various ways depending on the installation environment.

그리고, 순환관 111과 연통되게 제1파이프 113가 연결된다. 상기 순환관 111을 통해 열교환된 냉각수가 제1파이프 113를 따라 토출되게 된다. The first pipe 113 is connected to communicate with the circulation pipe 111. The coolant heat exchanged through the circulation pipe 111 is discharged along the first pipe 113.

이렇게, 제1파이프 113로 토출된 냉각수는 건물의 옥상등에 배치된 냉각탑 115에 보내져 냉각수를 대기 속에 분무하거나 물방울 지어 떨어지게 한 후 냉각시키게 된다. In this way, the cooling water discharged to the first pipe 113 is sent to the cooling tower 115 disposed on the roof of the building to spray the cooling water in the air or drop dripping to cool.

즉, 냉각탑 115을 통해 냉각된 냉각수를 적어도 하나 이상의 응축기 13로 다시 순환시켜 이용가능하게 된다. 이때, 냉각탑 115에서 토출되는 냉각수를 응축기 13로 압송시키기 위한 펌프 117a를 제2파이프 117에 연통되게 연결시킨다. That is, the cooling water cooled through the cooling tower 115 is circulated back to at least one or more condensers 13 to be available. At this time, the pump 117a for pumping the cooling water discharged from the cooling tower 115 to the condenser 13 is connected in communication with the second pipe 117.

이처럼, 적어도 하나 이상의 응축기 13를 동시에 열교환이 가능하도록 하여 냉동시스템 10의 효율이 증가되게 하였다.As such, at least one condenser 13 may be heat exchanged at the same time, thereby increasing the efficiency of the refrigeration system 10.

한편, 열교환시스템 110에 열회수시스템 120을 연결하여 순환관 111을 순환하여 열교환된 냉각수의 열을 난방용으로 이용할 수 있도록 하였다.Meanwhile, the heat recovery system 120 is connected to the heat exchange system 110 to circulate the circulation pipe 111 so that the heat of the coolant heat exchanged can be used for heating.

여기서, 열회수시스템 120은 난방기 121, 제3파이프 123, 제4파이프 125로 이루어져 있다.Here, the heat recovery system 120 is composed of a heater 121, the third pipe 123, the fourth pipe 125.

특히, 제3파이프 123는 제1파이프 113에서 분기 되도록 연결되어 있다. 제1파이프를 통해 토출된 냉각수가 제3파이프 123를 통해 난방기 121로 공급된다. 이때, 제1파이프 113에서 제3파이프 123로 분기시키기 위해 방향전환이 가능한 제1밸브 126a을 설치한다.In particular, the third pipe 123 is connected to branch from the first pipe 113. The cooling water discharged through the first pipe is supplied to the heater 121 through the third pipe 123. At this time, in order to branch from the first pipe 113 to the third pipe 123, a first valve 126a capable of changing direction is installed.

이때, 난방기 121에 공급되는 냉각수의 온도는 28℃(겨울)~37℃(여름)이다. 이렇게 공급된 냉각수를 난방기 121에 순환시켜 난방이 가능하도록 하였다. 난방기 121 내부에 장착된 팬(미부호)을 가동하여 온풍을 공급할 수도 있고, 온수를 순환시켜 난방을 할수도 있도록 하였다.At this time, the temperature of the cooling water supplied to the heater 121 is 28 degreeC (winter)-37 degreeC (summer). The cooling water thus supplied was circulated through the heater 121 to enable heating. The fan (unsigned) installed inside the heater 121 can be supplied to supply warm air, and the hot water can be circulated for heating.

이와 같이, 난방기 121에서 열교환된 냉각수를 토출시키는 제4파이프 125가 연결되어 있다. 여기서 제4파이프 125로 토출되는 냉각수의 온도는 26℃(여름)~30℃(겨울)이다.In this way, the fourth pipe 125 for discharging the cooling water exchanged with the heater 121 is connected. Here, the temperature of the cooling water discharged to the fourth pipe 125 is 26 ° C (summer) to 30 ° C (winter).

이렇게, 제4파이프 125에서 토출된 냉각수는 제1파이프 113에 설치된 제2밸브 126b와 제2파이프 117에 설치된 제3밸브 126c의 개폐 유무에 따라 난방기 121에서 열교환이 충분히 되지 않았을 경우 냉각탑 115으로 토출되게 조절한다. 또한, 난방기 121에서 열교환이 충분히 되지 않았을 경우 제5파이프 127로 토출되게 조절 한다.Thus, the coolant discharged from the fourth pipe 125 is discharged to the cooling tower 115 when the heat exchanger 121 is not sufficiently heat-exchanged in the heater 121 according to whether the second valve 126b installed in the first pipe 113 and the third valve 126c installed in the second pipe 117 are opened or closed. Adjust it. In addition, when the heat exchange is not enough in the heater 121 is adjusted to be discharged to the fifth pipe 127.

이와 같이, 계절에 따른 온도변화에 맞춰 불필요하게 가동되는 시스템을 정지시켜 에너지가 낭비되는 것을 방지한다.In this way, it is necessary to stop the unnecessary operation of the system in response to seasonal temperature changes to prevent waste of energy.

본 발명에 따른 냉동시스템의 폐열회수 시스템에 작용을 살펴보면 다음과 같다.Looking at the action of the waste heat recovery system of the refrigeration system according to the present invention.

먼저, 도 3a에 도시한 바와 같이 응축기 13에서 열교환된 냉각수가 열회수시스템 120을 거치지 않고 냉각탑 115으로 바로 토출되는 흐름을 설명한다.First, as illustrated in FIG. 3A, a flow of cooling water heat exchanged in the condenser 13 directly to the cooling tower 115 without passing through the heat recovery system 120 will be described.

상기 응축기 13의 내부에 설치된 순환관 111을 거쳐 온도가 상승된 냉각수가 제1파이프 113를 따라 냉각탑 115방향으로 토출되도록 제1파이프 113에 설치된 제1밸브 126a와 제2밸브 126b를 조절하여 냉각수가 냉각탑 115으로 인입되도록 한다.Cooling water is adjusted by adjusting the first valve 126a and the second valve 126b installed in the first pipe 113 to discharge the cooling water having a temperature rise through the circulation pipe 111 installed in the condenser 13 along the first pipe 113 in the cooling tower 115 direction. Allow it to enter cooling tower 115.

더불어, 제2파이프 117에 설치된 펌프 117a가 냉각탑 115을 거친 냉각수를 순환관 111으로 압송하여 순환시킨다.In addition, the pump 117a installed in the second pipe 117 pumps and circulates the cooling water passing through the cooling tower 115 to the circulation pipe 111.

한편, 도 3b에 도시한 바와 같이 응축기 13에서 열교환된 냉각수가 열회수시스템 120을 순환하였음에도 열교환이 충분히 이루어 지지 않은 냉각수를 냉각탑 115으로 토출시키는 흐름을 설명한다.Meanwhile, as illustrated in FIG. 3B, a flow of discharging the cooling water that is not sufficiently heat exchanged to the cooling tower 115 even though the cooling water heat exchanged in the condenser 13 circulates through the heat recovery system 120 will be described.

상기 응축기 13의 내부에 설치된 순환관 111을 거쳐 온도가 상승된 냉각수가 제1파이프 113를 따라 난방기 121방향으로 토출되도록 제1파이프 113에 설치된 제1밸브 126a를 조절하여 제3파이프 123로 분기시킨다.The first valve 126a installed in the first pipe 113 is adjusted to branch to the third pipe 123 so that the cooling water having a temperature rise through the circulation pipe 111 installed in the condenser 13 is discharged along the first pipe 113 in the direction of the heater 121. .

더불어, 제3파이프 123로 분기된 냉각수가 난방기 121를 순환하면서 열교환된 후 제4파이프 125로 토출된다. 이때, 냉각탑 115방향으로 냉각수가 토출되도록 제2밸브 126b를 조절하여 제4파이프 125에서 토출된 냉각수가 냉각탑 115으로 인입되도록 한다.In addition, the coolant branched to the third pipe 123 is heat-exchanged while circulating the heater 121 and then discharged to the fourth pipe 125. At this time, the second valve 126b is adjusted to discharge the cooling water in the cooling tower 115 direction so that the cooling water discharged from the fourth pipe 125 is introduced into the cooling tower 115.

그리고, 제2파이프 117에 설치된 펌프 117a가 냉각탑 115을 거친 냉각수를 순환관 111으로 압송하여 순환시킨다.Then, the pump 117a installed in the second pipe 117 pumps the cooling water through the cooling tower 115 to the circulation pipe 111 for circulation.

이때, 제4파이프 125에서 분기되도록 설치된 제5파이프 127로 냉각수가 토출되지 않도록 제3밸브 126를 반드시 차단시켜 냉각탑 115을 거친 냉각수가 순환관 111으로 압송되도록 한다.At this time, the third valve 126 is necessarily blocked to prevent the coolant from being discharged to the fifth pipe 127 provided to branch from the fourth pipe 125 so that the coolant passing through the cooling tower 115 is pumped into the circulation pipe 111.

한편, 도 3c에 도시한 바와 같이 응축기 13에서 열교환된 냉각수가 열회수시스템 120을 순환하여 열교환이 충분히 이루진 냉각수를 순환관 111 토출시키는 흐름을 설명한다.Meanwhile, as shown in FIG. 3C, the flow of the cooling water heat-exchanged in the condenser 13 circulating through the heat recovery system 120 to discharge the cooling water having sufficient heat exchange to the circulation tube 111 will be described.

상기 응축기 13의 내부에 설치된 순환관 111을 거쳐 온도가 상승된 냉각수가 제1파이프 113를 따라 난방기 121방향으로 토출되도록 제1파이프 113에 설치된 제1밸브 126a를 조절하여 제3파이프 123로 분기시킨다.The first valve 126a installed in the first pipe 113 is adjusted to branch to the third pipe 123 so that the cooling water having a temperature rise through the circulation pipe 111 installed in the condenser 13 is discharged along the first pipe 113 in the direction of the heater 121. .

더불어, 제3파이프 123로 분기된 냉각수가 난방기 121를 순환하면 열교환된 후 제4파이프 125로 토출된다. 이때, 제2밸브 126b를 차단시켜 제4파이프 125에서 토출된 냉각수가 제5파이프 127로 분기되도록 한다.In addition, when the coolant branched to the third pipe 123 circulates through the heater 121, the coolant is discharged to the fourth pipe 125 after heat exchange. At this time, the second valve 126b is blocked to allow the cooling water discharged from the fourth pipe 125 to branch to the fifth pipe 127.

나아가, 제2파이프 117에 설치된 제3밸브 126c를 조절하여 제5파이프 127를 통해 토출된 냉각수가 제2파이프 117에 합류되도록 한다.Further, the third valve 126c installed in the second pipe 117 is adjusted to allow the cooling water discharged through the fifth pipe 127 to join the second pipe 117.

그리고, 제2파이프 117에 설치된 펌프 117a가 냉각탑 115을 거친 냉각수를 순환관 111으로 압송하여 순환시킨다.Then, the pump 117a installed in the second pipe 117 pumps the cooling water through the cooling tower 115 to the circulation pipe 111 for circulation.

이와 같이, 냉각탑 115으로 순환되는 냉각수의 방향을 선택적으로 조절하는 밸브 126a,b,c를 마련하여, 계절에 따른 온도변화에 맞춰 불필요하게 가동되는 시스템을 정지시켜 에너지가 낭비되는 것을 방지하게 된다.In this way, by providing valves 126a, b, c for selectively adjusting the direction of the cooling water circulated to the cooling tower 115, by stopping the unnecessary operation system according to the temperature change according to the season to prevent waste of energy.

여기서, 앞서 도시된 도면에서와 동일한 참조부호는 동일한 기능을 하는 동일한 부재를 가리킨다.Here, the same reference numerals as in the above-described drawings indicate the same members having the same function.

이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어서 명백할 것이다.The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

도 1은 종래의 냉동시스템을 나타낸 흐름도.1 is a flow chart showing a conventional refrigeration system.

도 2는 본 발명인 냉동시스템의 폐열회수 시스템을 나타낸 배치도.Figure 2 is a layout view showing the waste heat recovery system of the present invention refrigeration system.

도 3a은 본 발명인 냉동시스템의 폐열회수 시스템의 1실시예를 나타낸 흐름도.Figure 3a is a flow chart showing one embodiment of the waste heat recovery system of the present invention refrigeration system.

도 3b은 본 발명인 냉동시스템의 폐열회수 시스템의 2실시예를 나타낸 흐름도.Figure 3b is a flow chart showing an embodiment of the waste heat recovery system of the present invention refrigeration system.

도 3c은 본 발명인 냉동시스템의 폐열회수 시스템의 3실시예를 나타낸 흐름도.Figure 3c is a flow chart showing an embodiment of the waste heat recovery system of the present invention refrigeration system.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 냉동시스템 11 : 압축기10 refrigeration system 11 compressor

13 : 응축기 15 : 팽창밸브13 condenser 15 expansion valve

17 : 증발기 17: evaporator

100 : 냉동시스템의 폐열회수 시스템100: waste heat recovery system of refrigeration system

110 : 열교환시스템 111 : 순환관110: heat exchange system 111: circulation pipe

113 : 제1파이프 115 : 냉각탑113: first pipe 115: cooling tower

117 : 제2파이프 117a : 펌프117: second pipe 117a: pump

120 : 열회수시스템 121 : 난방기120: heat recovery system 121: heater

123 : 제3파이프 125 : 제4파이프123: third pipe 125: fourth pipe

126a : 제1밸브 126b : 제2밸브126a: first valve 126b: second valve

126c : 제3밸브 127 : 제5파이프126c: third valve 127: fifth pipe

Claims (7)

저온저압의 냉매가스를 고온고압으로 압축하는 압축기와, 상기 압축기에 연결되어 고온고압의 냉매가스를 고온고압의 냉매액으로 바꿔주는 응축기와, 상기 응축기에 연결되어 고온고압의 냉매액을 저온저압의 냉매액으로 바꿔주는 팽창밸브와, 상기 팽창밸브에 연결되어 순환되는 저온저압의 냉매액이 쇼케이스의 열을 흡수하여 저온저압의 냉매가스로 바꿔주는 증발기로 이루어진 냉동시스템에 있어서, A compressor for compressing a low temperature low pressure refrigerant gas to a high temperature high pressure, a condenser connected to the compressor to convert a high temperature high pressure refrigerant gas into a high temperature high pressure refrigerant liquid, and connected to the condenser to convert a high temperature high pressure refrigerant liquid to a low temperature low pressure pressure. In a refrigeration system consisting of an expansion valve for converting a refrigerant liquid, and an evaporator for converting the low-temperature low-pressure refrigerant liquid circulated in connection with the expansion valve to absorb the heat of the showcase into a low-temperature low-pressure refrigerant gas, 상기 응축기에 순환되는 고온고압의 냉매의 온도를 낮추기 위해 응축기 내부에 냉각수가 순환되는 순환관이 마련되고, 상기 순환관에 연결되어 상기 응축기를 통해 열교환된 냉각수가 토출되는 제1파이프가 연결되며, 상기 제1파이프를 통해 토출된 냉각수를 열교환시키는 냉각탑이 마련되고, 상기 냉각탑에서 열교환된 냉각수를 상기 순환관으로 토출시키는 제2파이프로 이루어진 열교환시스템과, In order to lower the temperature of the high-temperature high-pressure refrigerant circulated in the condenser, a circulation pipe through which coolant is circulated is provided in the condenser, and a first pipe connected to the circulation pipe to discharge the coolant heat exchanged through the condenser is connected. A heat exchange system provided with a cooling tower for heat-exchanging the cooling water discharged through the first pipe, and a second pipe for discharging the cooling water heat-exchanged in the cooling tower to the circulation pipe; 상기 제1파이프를 통해 토출된 냉각수를 분기시키고, 분기된 냉각수의 열을 회수하여 난방이 가능하도록 한 난방기가 마련되며, 상기 난방기를 통해 열교환된 냉각수를 다시 순환시키도록 이루어진 열회수시스템으로 구성된 것을 특징으로 하는 냉동시스템의 폐열회수 시스템.A radiator for branching the cooling water discharged through the first pipe, and recovering heat of the branched cooling water is provided, and a heat recovery system configured to circulate the cooling water exchanged through the heater again. Waste heat recovery system of refrigeration system. 제 1항에 있어서,The method of claim 1, 상기 열회수시스템은, The heat recovery system, 상기 제1파이프를 통해 토출되어 분기된 냉각수가 상기 난방기에 공급되도록 제1파이프와 난방기의 일측을 연결하는 제3파이프가 마련되고, 상기 난방기의 타측에 난방기 내부를 순환하여 열교환된 냉각수가 토출되는 제4파이프가 연결된 것을 특징으로 하는 냉동시스템의 폐열회수 시스템.A third pipe is connected to one side of the heater and the first pipe so that the cooling water discharged through the first pipe and branched is supplied to the heater, and the heat exchanged cooling water is discharged by circulating the inside of the heater on the other side of the heater. Waste heat recovery system of the refrigeration system, characterized in that the fourth pipe is connected. 제 1항 또는 제2항에 있어서,3. The method according to claim 1 or 2, 상기 제4파이프와 제2파이프를 연결하는 제5파이프를 마련하여 제4파이프를 통해 토출된 냉각수가 제2파이프로 합류될 수 있도록 한 것을 더 포함하는 냉동시스템의 폐열회수 시스템.And providing a fifth pipe connecting the fourth pipe and the second pipe to allow the cooling water discharged through the fourth pipe to join the second pipe. 제 1항에 있어서,The method of claim 1, 상기 제2파이프와 연통되게 연결시켜 냉각수를 순환시키는 펌프가 더 포함된 것을 특징으로 하는 냉동시스템의 폐열회수 시스템.The waste heat recovery system of the refrigeration system further comprises a pump connected to the second pipe in communication with the circulation of the cooling water. 제 1항에 있어서,The method of claim 1, 상기 제1파이프를 통해 토출된 냉각수를 제3파이프로 분기시키는 것을 선택적으로 조절하는 제1밸브가 더 포함된 것을 특징으로 하는 냉동시스템의 폐열회수 시스템.And a first valve for selectively controlling branching of the coolant discharged through the first pipe into a third pipe. 제 1항에 있어서,The method of claim 1, 상기 제4파이프를 통해 토출된 냉각수를 제1파이프로 합류시키거나 제5파이프로 분기되도록 조절하는 제2밸브가 더 포함된 것을 특징으로 하는 냉동시스템의 폐열회수 시스템.And a second valve for controlling the cooling water discharged through the fourth pipe to be joined to the first pipe or branched into the fifth pipe. 제 1항에 있어서,The method of claim 1, 상기 제4파이프를 통해 토출된 냉각수를 제2파이프로 합류시키는 것을 선택적으로 조절하는 제3밸브가 더 포함된 것을 특징으로 하는 냉동시스템의 폐열회수 시스템.And a third valve for selectively controlling the confluence of the cooling water discharged through the fourth pipe into the second pipe.
KR1020080131478A 2008-12-22 2008-12-22 The ice-cycle system of waste heat recovery system KR101043034B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200013867A (en) 2018-07-31 2020-02-10 전남대학교산학협력단 Combined cold-hot heat storage system
KR102111585B1 (en) * 2019-01-03 2020-06-05 (주)삼우종합건축사사무소 Oac system using waste heat from cooling water
KR102621151B1 (en) * 2023-06-21 2024-01-04 (주)범양냉방 Heating system utilizing waste heat of refrigerator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004053055A (en) * 2002-07-17 2004-02-19 Sanyo Electric Co Ltd Refrigerator
KR100869971B1 (en) * 2008-02-12 2008-11-21 브이에스에너지 주식회사 Freeze, refrigeration and warm water accumulation system using heatpump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200013867A (en) 2018-07-31 2020-02-10 전남대학교산학협력단 Combined cold-hot heat storage system
KR102111585B1 (en) * 2019-01-03 2020-06-05 (주)삼우종합건축사사무소 Oac system using waste heat from cooling water
KR102621151B1 (en) * 2023-06-21 2024-01-04 (주)범양냉방 Heating system utilizing waste heat of refrigerator

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