KR20020066540A - refrigerating system using a phase change material - Google Patents

refrigerating system using a phase change material Download PDF

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Publication number
KR20020066540A
KR20020066540A KR1020010006780A KR20010006780A KR20020066540A KR 20020066540 A KR20020066540 A KR 20020066540A KR 1020010006780 A KR1020010006780 A KR 1020010006780A KR 20010006780 A KR20010006780 A KR 20010006780A KR 20020066540 A KR20020066540 A KR 20020066540A
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KR
South Korea
Prior art keywords
storage
storage means
cold storage
heat
cooling
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KR1020010006780A
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Korean (ko)
Inventor
김범수
김계홍
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김범수
김계홍
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Priority to KR1020010006780A priority Critical patent/KR20020066540A/en
Publication of KR20020066540A publication Critical patent/KR20020066540A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/023—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/028—Control arrangements therefor
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Abstract

PURPOSE: A refrigerating system using a phase change material is provided to improve cooling efficiency. CONSTITUTION: A phase change material of inorganic hydrate series whose storage capacity per unit volume is large is used as phase change material(11,21) stored in a storage device(1) and a refrigerating device(2), respectively, and a heat exchanger(22) is installed to the refrigerating device so that the phase change material in the storage device is cooled down at predetermined temperature and circulated in the heat exchanger of the refrigerating device with an interposed connecting device(3) needed so as to cool down the phase change material in the refrigerating device by heat exchange.

Description

저온 잠열 축열재를 이용한 축냉시스템{refrigerating system using a phase change material}Refrigerating system using a low temperature latent heat storage material

본 발명은 저온 잠열 축열재(phase change material)를 이용한 축냉시스템에 관한것으로, 더욱상세하게는 상변화 물질인 저온 잠열 축열재를 별도의 저장수단에서 소정 온도 이하로 냉각 저장시키고, 또한 냉각수단의 설치가 요구되는 냉동차에는 열교환기를 갖는 축냉수단을 설치하여, 필요시에 저장탱크 내의 냉각된 축열재가 축냉수단의 열교환기내를 순환,복귀 되도록 하는 것에 의해 이동수단의 냉각수단을 소정 온도 이하로 냉각시킬수 있게 함과 동시에 저장탱크로 복귀되는 축열재는 다시 냉각시켜 대기상태로 둘 수 있도록 하는 것에 의해 냉동차의 축냉수단에 대한 축냉이 물질교환이 아닌 열교환에 의해 이루어지도록 함으로써 냉동차에 대한 냉동 설비의 구성을 단순화 함과 동시에 냉동효율을 더욱 높여 신선식품에 대한 물류(物流) 비용의 절감을 도모토록 한것이다.The present invention relates to a cold storage system using a low temperature latent heat storage material, and more particularly, a low temperature latent heat storage material, which is a phase change material, is cooled and stored below a predetermined temperature in a separate storage means. A refrigeration vehicle that requires installation is provided with a refrigerating means having a heat exchanger so that the cooled regenerator in the storage tank circulates and returns inside the heat exchanger of the refrigerating means, if necessary, so that the cooling means of the moving means is below a predetermined temperature. The heat storage material that is cooled down and returned to the storage tank can be cooled again and placed in the standby state so that the heat storage material for the cold storage means of the refrigerator vehicle is made by heat exchange instead of material exchange. Reduced logistics costs for fresh food by simplifying the composition and increasing the freezing efficiency It almost certainly has ever achieved.

일반적으로 냉동기는 증발기, 압축기, 응축기등의 필수구성요소를 갖추어야 하는 것인바, 이와같은 구성요소들로 되는 냉동기는 냉동차등과 같이 적재고내의 적재물을 신선한 상태로 보관,이송하도록 하기 위한 차량이나 하절기에 승객들의 쾌적한 여행을 위해 차량의 객실로 찬 공기가 공급되도록 하기 위한 대중교통 수단에는 반드시 설치되는 것으로, 이 경우 차량에 냉동기를 설치하게되면, 차량의 전체적인 중량이 증가하게 되고 차량주행시 발생되는 엔진 동력의 일부를 냉동기의 구동원으로 이용하여야 하거나, 별도의 냉동기 전용 구동원을 설치하여야 하는데 따라 차량주행시 주행성능의 저하와 연비손실은 물론 과도한 배출가스로 인한 대기오염 문제와 함께 차량에 설치되는 냉동기의 크기와 용량이 제한을 받는 것이어서 그 설치가 복잡해짐은 물론 그만큼 차량가격의 증가를 초래하게 되는 문제가 있을 뿐만아니라, 여러구성부품으로 이루어지는 냉동기의 구성특성상 잦은 고장 발생요인을 갖는 것이어서 냉동차의 적재고에 적재된 식품이 손상되게되어 막대한 손실을 끼치게 되거나 대중교통 수단의 경우 승객들에게 많은 불편을 야기하게 되어 물류비용의 전체적인 증가와 함께 대중교통 수단에 대한 신뢰도의 저하를 초래하게 되는등의 문제가 있는 것이었다.In general, the freezer should have the necessary components such as an evaporator, a compressor, and a condenser. The freezer including these components, such as a refrigerator car, is used to store and transport loads in the warehouse in a fresh state. Public transport means to ensure that the cold air is supplied to the cabin of the vehicle for the passengers to travel comfortably, in this case, if the refrigerator is installed in the vehicle, the overall weight of the vehicle increases and the engine generated when driving the vehicle Part of the power should be used as a driving source of the refrigerator, or a separate driving source for the refrigerator should be installed. Therefore, the size of the refrigerator installed in the vehicle along with the deterioration of the driving performance and fuel consumption as well as the air pollution caused by excessive exhaust gas when driving the vehicle And capacity are limited, so the installation is complicated. As well as the load, there is a problem that causes an increase in the price of the vehicle, as well as a frequent failure factor due to the configuration characteristics of the refrigerator consisting of a number of components, causing damage to the food loaded in the refrigerator's storage, causing huge losses In the case of public transportation, there is a problem such as causing a lot of inconvenience to passengers, resulting in a decrease in the reliability of public transportation along with an overall increase in logistics costs.

또한 상기와 같이 냉동차에 냉동기를 직접 설치하여 구동시킴에 따라 야기되는 각종 문제점을 해결하기 위한 '냉동차의 축냉시스템'이 특허등록 제28205호(이하 선등록 발명이라함)로 등록되어 실시되고 있는 것으로, 이와같은 선등록발명의 축냉시스템은, 냉동차에 복잡한 구성의 냉동기를 설치하지 않고 목적한 냉동차 적재고에 대한 냉각이 이루어지도록 하고 있는 것으로, 이와같은 선등록발명의 축냉시스템은, 일종의 부동액제인 브라인액을 별도의 저장탱크내에서 미리 소정 온도 이하로 냉각 저장시킨 상태에서 별도의 브라인 교체 공급수단을 이용하여 냉동차에 설치된 쿨링유니트에 냉각된 브라인액을 공급하여 이미 쿨링유니트에 공급되어 증발 잠열이 없어진 사용브라인과 교체되도록 하여 이렇게 냉각상태로 교체 공급된 새로운 브라인액으로 하여금 냉동차의 적재고를 냉각상태로 유지할 수 있도록 한것이다.In addition, as described above, 'refrigerant storage system of a refrigerator vehicle' to solve various problems caused by directly installing and driving a refrigerator in a refrigerator vehicle is registered and implemented under the patent registration No. 28205 (hereinafter referred to as a pre-registered invention). The cold storage system of the pre-registered invention allows the cooling of the intended refrigerator car stack without the refrigeration machine having a complicated configuration. The cold storage system of the pre-registered invention is a kind of antifreeze type brine. The liquid is cooled and stored below a predetermined temperature in a separate storage tank in advance, and the cooled brine solution is supplied to the cooling unit installed in the refrigerator vehicle by using a separate brine replacement supply means, which is already supplied to the cooling unit to remove latent heat of evaporation. The new brine solution supplied in this way is cooled and replaced with the used brine. Almost certainly cause the enemies to keep the inventory of reefers to cool.

그러나 상기와 같이 단순히 냉동차에 적재된 쿨링유니트에 대해 냉각물질인 브라인액을 외부로 부터 공급되게하여 냉매 자체를 직접 교환하는 물질교환방식으로 되는 선등록발명의 축냉시스템은, 쿨링유니트에 새롭게 교체 공급된 브라인액이 현열축열방식으로 냉각된 상태이므로 적재고 내부를 적정 온도 이하로 유지하는 과정에서 적재고의 내부 온도가 항온(恒溫) 개념이 아닌 비례 개념으로 점차 상승하게 되어 적재고 내부에 대한 냉각효율이 떨어질 뿐만아니라 그만큼 자주 적재된 쿨링유니트에 대해 브라인액 교체,공급이 이루어지도록 하여야 하는데 따른 번거로움과 함께 그에 따른 신선식품에 대한 물류 비용의 증가를 초래하게 되는등의 문제가 있는 것이었다.However, as described above, the regenerative cooling system of the pre-registered invention, which is a material exchange method of directly exchanging refrigerant by directly supplying a brine liquid, which is a cooling material, to the cooling unit loaded in a refrigerating vehicle, is newly replaced and supplied to the cooling unit. Since the brine liquid is cooled by the sensible heat storage method, the internal temperature of the warehouse is gradually increased to a proportional concept rather than a constant temperature in the process of maintaining the inside of the warehouse below an appropriate temperature. Not only was the efficiency lowered, but also the trouble of having to replace and supply the brine solution for the cooling unit that was loaded so frequently, resulting in increased logistics costs for fresh food.

따라서 본발명의 목적은, 상기와 같이 각종 냉동차에 냉동기를 직접 설치한 상태에서 차량의 엔진 동력을 이용하여 냉동기를 가동시키는 것에 의해 적재고에 대한 냉각이 이루어지도록 하는 냉동차의 냉각시스템이나, 별도의 브라인액등으로 되는 냉매를 저장탱크내에 미리 저장시킨 상태에서 냉각시켜, 이 냉각된 냉매를 냉매 교체수단을 통해 냉동차의 쿨링유니트로 공급하여 새로운 냉각된 냉매와 기사용된 냉매를 서로 교체 되도록 하는 종래의 축냉시스템이 지닌 제반문제점을 해결하기위하여, 상변화 물질인 저온 잠열 축열재를 지상에 설치된 저장수단에서 소정 온도 이하로 냉각시킨 상태에서 이 냉각된 저온 잠열 축열재를 냉동차의 적재고에 설치된 축냉수단의 열교환기를 통과하도록 축냉수단에 공급 순환 되도록 함으로써 냉동차의 축냉수단에 저장된 상변화 물질인 축냉재를 열교환 방식으로 냉각시키는 것에 의해 냉동차의 적재고에 대해 항온 개념의 냉각상태 유지가 가능하게 하여 냉각효율을 높일 수 있게 됨에 따라 신선식품의 물류 비용을 대폭 절감할 수 있음과 동시에 대중교통 수단의 경우 하절기의 승객에 대한 서비스의 질을 높일 수 있는 저온 잠열 축열재를 이용한 축냉시스템을 제공함에 있다.Accordingly, an object of the present invention is to provide a cooling system for a refrigerator, in which a refrigerator is cooled by operating a refrigerator using engine power of a vehicle in a state where a refrigerator is directly installed in various refrigerators as described above, or a separate system. Cooling the refrigerant to be stored in the storage tank in the pre-stored state in the storage tank, and supply the cooled refrigerant to the cooling unit of the refrigerator vehicle through the refrigerant replacement means to replace the new coolant and the used refrigerant to each other In order to solve all the problems of the cold storage system of the cold storage system, the cold storage latent heat storage material is cooled in the storage means installed on the ground below the predetermined temperature. Refrigeration of refrigeration vehicles by supplying circulation to the refrigeration means to pass through the heat exchanger of the cold means By cooling the cold storage material, which is the phase change material stored in the stage, by the heat exchange method, it is possible to maintain the cooling condition in the constant temperature concept with respect to the load of the refrigerating vehicle, thereby increasing the cooling efficiency, thereby greatly reducing the logistics cost of fresh food. At the same time, in the case of public transportation, a cold storage system using low temperature latent heat storage materials can be used to improve the quality of service for passengers in summer.

도 1은 본 발명에 의한 축냉시스템의 일예를 나타내는 사시도.1 is a perspective view showing an example of a heat storage system according to the present invention.

도 2는 본 발명에 의한 축냉시스템의 다른예를 나타내는 사시도.2 is a perspective view showing another example of a heat storage system according to the present invention.

도 3은 본 발명에 의한 축냉시스템을 이루는 축열수단의 개략도.Figure 3 is a schematic view of the heat storage means forming a heat storage system according to the present invention.

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

1 : 저장수단 2 : 축냉수단 3 : 연결수단 4 : 냉각수단DESCRIPTION OF SYMBOLS 1 Storage means 2 Cooling means 3 Connection means 4 Cooling means

5 : 냉동차 11,21 : 축냉재 22 : 열교환기 31 : 유입구5: Refrigerated car 11, 21: Cold storage material 22: Heat exchanger 31: Inlet

32 : 유출구 33 : 펌프 34 : 연결관32: outlet 33: pump 34: connector

상기한 목적을 달성하기위하여, 본 발명의 저온 잠열 축열재를 이용한 축냉시스템은, 다량의 축냉재(11)를 소정 온도 이하로 냉각수단(4)에 의해 냉각,저장할 수 있는 저장수단(1)과, 필요에 따라 냉동차(5)의 축냉수단(2)에 대해 연결수단(3)을 통해 연결되는 저장수단(1)의 냉각된 축냉재(11)를 공급할 수 있도록한 축냉시스템에 있어서, 상기 저장수단(1)과 축냉수단(2)내에 저장되는 축냉재(11)(21)로서 단위 부피당 저장용량이 큰 무기수화물 계열의 저온 잠열 축열재를 사용함과 동시에 상기 축냉수단(2)내에는 열교환기(22)를 설치하여, 상기 저장수단(1)내의 축냉재(11)가 소정 온도로 냉각된 상태에서 필요에 따라 연결수단(3)을 개재하여 축냉수단(2)의 열교환기(22)를 거쳐 순환되게 하는 것에 의해 축냉수단(2)내의 축냉재(21)가 열교환 방식으로 냉각되도록 한 것을 특징으로 한다.In order to achieve the above object, the cold storage system using the low temperature latent heat storage material of the present invention, the storage means (1) capable of cooling and storing a large amount of the cold storage material (11) by the cooling means (4) below a predetermined temperature And, if necessary, in a cold storage system in which the cold storage material 11 of the storage means 1 connected to the cold storage means 2 of the refrigerator vehicle 5 can be connected via the connection means 3. As the cold storage materials 11 and 21 stored in the storage means 1 and the cold storage means 2, a low temperature latent heat storage material of inorganic hydrate type having a large storage capacity per unit volume is used and the cold storage means 2 The heat exchanger 22 is installed inside the heat exchanger of the heat storage cooling means 2 via the connection means 3 as necessary in a state where the heat storage material 11 in the storage means 1 is cooled to a predetermined temperature. The circulating coolant 21 in the cold storage means 2 is cooled in a heat exchange manner by being circulated through the machine 22. And that is characterized.

이하 본발명이 속하는 기술분야에서 통상의 지식을 가진자가 본발명을 용이하게 실시할 수 있을 정도로 본발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

도 1은 본발명에 의한 저온 잠열 축열재를 이용한 축냉시스템의 구성을 나타내는 사시도이고, 도 2는 본발명에 의한 저온 잠열 축열재를 이용한 축냉시스템의 다른예의 구성을 나타내는 사시도이며, 도 3은 본발명에 의한 저온 잠열 축열재를 이용한 축냉시스템을 이루는 축냉수단의 구성을 나타내는 개략도로서, 그 구성은 크게 저장수단(1), 축냉수단(2) 및 연결수단(3)으로 이루어진다.1 is a perspective view showing the configuration of a cold storage system using a low temperature latent heat storage material according to the present invention, Figure 2 is a perspective view showing a configuration of another example of a cold storage system using a low temperature latent heat storage material according to the present invention, Figure 3 It is a schematic diagram which shows the structure of the cold storage means which comprises the cold storage system which used the low temperature latent heat storage material by this invention, and its structure consists largely of the storage means 1, the cold storage means 2, and the connection means 3.

상기한 저장수단(1)은 대략 탱크형태로 되어 내부에 냉각수단(4)의 증발기(42)가 외부의 압축기(41)와 연결되는 상태로 설치됨과 동시에 상변화 물질인 저온 잠열 축열재(11)가 충전 저장되는것으로, 상기 축열재(11)는 심야전력을 이용하여 작동되는 냉각수단(4)에 의해 소정 온도 이하의 축냉 상태를 유지할 수 있게 되며, 이렇게 축냉된 상태의 축열재(11)는 필요에 따라 후술하는 연결수단(3)을 개재하여 냉동차(5)의 축냉수단(2)으로 공급되어 열교환기(22)를 통과토록 하는것에 의해 열교환 방식에 의해 축냉수단(2)의 축냉재(21)를 냉각시키게 된다.The storage means (1) is in the form of a tank approximately inside the evaporator 42 of the cooling means 4 is installed in a state connected to the external compressor 41 and at the same time the low-temperature latent heat storage material 11 is a phase change material ) Is charged and stored, the heat storage material 11 is able to maintain a cold storage state below a predetermined temperature by the cooling means (4) operated by using a midnight power, the heat storage material 11 in this state Is supplied to the cold storage means 2 of the refrigerating vehicle 5 via the connecting means 3 to be described later as necessary to pass through the heat exchanger 22 of the cold storage means 2 by the heat exchange method. The heat storage material 21 is cooled.

상기한 축냉수단(2)은 냉동차(5)의 적재고 상부 및 측부에 다수 설치되는 것으로, 각 축냉수단(2)의 내부에는 외부의 연결수단(3)과 연결되어 저장수단(1)의 축냉재(21)가 그 내부를 통과 순환되도록 하는 열교환기(22)를 서로 연통상태로 연결 설치하고 있다.The accumulator means (2) is installed in the upper and the side of the stack of the refrigerator 5, a plurality of storage means (1) connected to the external connection means (3) inside the storage means (2) Heat exchangers 22 which allow the cool storage material 21 to be circulated through the inside thereof are connected to each other.

상기한 연결수단(3)은 저장수단(1) 일측에 설치되는 축냉재 입,출구(31)(32)와, 이 입,출구(31)(32)를 냉동차(5)의 임의 축냉수단(2)내에 설치된 열교환기(32)와 연통상태로 연결되게한 연결관(34)과, 이 연결관(34) 도중에 설치되어 축냉재를 순환되도록 가압하는 펌프(33)로 이루어지는 것으로, 저장수단(1) 내부에 축냉상태로 저장된 축냉재(11)를 필요에 따라 냉동차(5)의 축냉수단(2)내에 설치된 열교환기(22) 내부로 이송,순환시킬수 있도록 하고 있다.The connection means (3) is the storage means (1) one side of the refrigerating material inlet, outlet 31, 32, and the inlet, outlet 31, 32 installed in any one of the refrigerating vehicle (5) (2) a connecting pipe 34 which is in communication with the heat exchanger 32 provided in the connecting state, and a pump 33 installed in the middle of the connecting pipe 34 to pressurize the coolant to circulate, and storing means. (1) The coolant 11 stored therein in a cold storage state can be transported and circulated into the heat exchanger 22 provided in the cold storage means 2 of the refrigerator vehicle 5 as necessary.

상기와 같은 구성으로 되는 본 발명에 의한 저온 잠열 축열재를 이용한 축냉시스템의 실시작동상태에 대해 설명한다.The operational operation state of the heat storage cooling system using the low temperature latent heat storage material according to the present invention having the above configuration will be described.

본발명의 축냉시스템을 이루는 저장수단(1)을 축냉재 축냉시설에 다수 설치하여 다수의 냉동차(5)가 동시에 각 냉동차(5)마다 탑재된 각 축냉수단(2)의 축냉재(21)에 대한 축냉이 가능하게 되는 것으로, 먼저 심야시간대에 냉각수단(4)을 작동시켜 저장수단(1)에 담긴 축냉재(11)를 소정의 결빙 온도(예를들면 대략 -26℃정도) 이하로 축냉시켜 냉각,저장되게 한 상태에서, 냉각능력이 저하된 냉동차(5)의 축냉수단(2)에 담긴 축냉재(21)를 다시 소정의 결빙 온도(예를들면 대략 -15℃정도) 이하로 냉각시키고자 할 경우에는, 냉동차(5)를 저장수단(1)측으로 이동시킨후연결수단(3)의 호스(34)(34)를 저장수단(1) 일측의 입,출구(31)(32)와 냉동차(5)에 탑재된 축냉수단(2)의 열교환기(22)와 각각 연결한후 연결수단(3)의 펌프(33)를 작동시켜 저장수단(1)내에 소정 온도 이하로 냉각된채 저장된 축냉재(11)를 저장수단(1)의 출구(22)를 통해 일정시간동안 축냉수단(2)내의 열교환기(22) 내부로 공급하여 순환되게하면, 이 축냉재(11)는 서로 연통상태인 각각의 열교환기(22)를 순차적으로 순환하면서 열교환기(22)가 설치된 축냉수단(2)내에 저장된 축냉재(21)를 다시 냉각시킨후 호스(34)를 거쳐 최종적으로 저장수단(1)의 입구(31)를 통해 저장수단(1) 내부로 복귀되게 된다.A plurality of storage means (1) constituting the storage system of the present invention is installed in the storage material for cold storage material, so that a plurality of refrigeration vehicles (5) are mounted on each refrigerator vehicle (5) at the same time. In this case, first, the cooling means 4 are operated in the late-night time zone, so that the cold storage material 11 contained in the storage means 1 is below a predetermined freezing temperature (for example, about -26 ° C). In the state which cooled and stored by accumulating, the cool storage material 21 contained in the cool storage means 2 of the refrigerating vehicle 5 whose cooling ability fell was again lowered below a predetermined freezing temperature (for example, about -15 degreeC). In order to cool the furnace, the refrigeration vehicle 5 is moved to the storage means 1 side, and the hoses 34 and 34 of the connecting means 3 are moved into and out of the storage means 1 on one side of the inlet and outlet 31 ( 32 and the heat exchanger 22 of the cold storage means 2 mounted on the refrigerator vehicle 5, respectively, and then operate the pump 33 of the connecting means 3 to a predetermined temperature or less in the storage means 1;When the stored coolant 11 stored as an angle is supplied to the heat exchanger 22 in the cold storage means 2 for a predetermined time through the outlet 22 of the storage means 1, the coolant 11 is circulated. While sequentially circulating each heat exchanger 22 in communication with each other to cool the regenerated coolant 21 stored in the refrigerating means 2 installed with the heat exchanger 22 is finally passed through the hose (34) Through the inlet 31 of the storage means 1 is returned to the storage means (1).

이와같은 축냉재(11)의 순환 과정을 일정시간 동안 반복되게 함에 따라 냉동차(5)의 축냉수단(2)을 이루는 축냉재(21)는 열교환 방식으로 -15℃의 얼음덩어리 상태로 축냉되게 됨에 따라 많은 에너지를 저장하게 되어 냉동차(5)의 적재고 내부를 소정 온도 이하로 유지할 수 있게 된다.As the circulation process of the cold storage material 11 is repeated for a predetermined time, the cold storage material 21 constituting the cold storage means 2 of the refrigerator vehicle 5 is cooled in a state of ice mass at -15 ° C by heat exchange. As it stores a lot of energy it is possible to maintain the inside of the storage compartment of the refrigerator vehicle 5 below a predetermined temperature.

이후 저장수단(1)으로 복귀된 축냉재(11)는 심야시간대에 냉각수단(4)을 작동시켜 다시 소정 온도 이하로 냉각시키게 되면, 적은 축냉비용으로 동일 부피에 많은 열량을 저장하는 상태로 되어 지속적으로 냉동차(5)의 축냉수단(2)에 저장된 축냉재(21)에 대한 열교환 방식의 냉각이 가능하게 된다.Since the cool storage material 11 returned to the storage means 1 is cooled by cooling the temperature below the predetermined temperature by operating the cooling means 4 in the late-night time, it is in a state of storing a large amount of heat in the same volume at a low storage cost It is possible to continually cool the heat exchange method for the cold storage material 21 stored in the cold storage means 2 of the refrigerator vehicle 5.

이와같이 일정시간동안 저장수단(1) 내부에 냉각,저장된 축냉재(11)를 냉동차(5)에 탑재된 축냉수단(2)의 열교환기(22)를 통과시켜 순환되게 함으로써 열교환기(22)에 의해 축냉수단(2)내에 담긴 축냉재(21)는 냉각되게 되어 냉동차량(5)의 적재고내에 보관되는 신선식품에 대한 냉동,냉장 처리가 지속적으로 이루어지게 되는 것인바, 이때 열교환 방식으로 냉각되는 상기 축냉재(21)는 저온 잠열 축열재가 갖는 특성으로 인해 항온 개념의 온도 변화가 일어나게 되므로, 기존의 냉각수단 내부에 저장되는 냉각 물질 자체를 교체하는 현열축열방식에 비해 적재고 내부에 대해 적정 온도로 냉기를 유지하는 시간이 현저히 길어질 뿐만아니라 축냉수단(2)내에 저장된 축냉재(21)에 대한 축냉시간도 현저히 단축할 수 있게 되어 각종 신선식품에 대한 물류 비용을 대폭 절감할 수 있게 된다.Thus, the heat accumulating material 11 cooled and stored in the storage means 1 for a predetermined time passes through the heat exchanger 22 of the cold storage means 2 mounted in the refrigerator vehicle 5, thereby circulating. The cold storage material 21 contained in the cold storage means 2 is cooled so that the freezing and refrigerating treatment of fresh foods stored in the storage of the refrigerator vehicle 5 is continuously performed. Due to the characteristics of the low temperature latent heat storage material, the heat accumulating material 21 to be cooled by the temperature change occurs in a constant temperature concept, and thus, in the storage compartment as compared to the sensible heat storage method of replacing the cooling material itself stored in the existing cooling means. In addition, the time to keep the cold air at an appropriate temperature is significantly longer, and the time to cool the cold storage material 21 stored in the heat storage means 2 can be significantly shortened, thereby increasing the logistics cost for various fresh foods. It is possible to reduce.

상기 구성에 있어서, 열교환 방식으로 냉각되는 축냉재(21)를 갖는 축냉수단(2)을 냉동차(5)의 적재고에 설치되는 것을 예로하여 설명하였으나 이를 특정하는 것은 아니며, 각종 버스나 기차등 냉방장치의 설치가 필수적인 각종 대중교통 수단에 적용설치 할수도 있는등 그 설치 적용 대상을 제한하는 것은 아니다.In the above configuration, it has been described with the example that the cold storage means 2 having the cold storage material 21 to be cooled by the heat exchange method is installed in the storage of the refrigerator vehicle 5 by way of example, but not specified, various buses or trains, etc. It does not limit the application of the installation, such as the installation can be applied to various public transportation means that the installation of the air conditioning system is essential.

이상에서와 같이 본발명은 비록 상기의 실시예에 한하여 설명하였지만 반드시 여기에만 한정되는것은 아니며 본 발명의 범주와 사상을 벗어나지 않는 범위내에서 다양한 변형실시가 가능함은 물론이다.As described above, although the present invention has been described with reference to the above embodiments, it is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention.

이상의 설명에서 분명히 알수있듯이 본발명의 저온 잠열 축열재를 이용한 축냉시스템에 의하면, 상변화 물질인 저온 잠열 축열재를 심야시간대에 저장수단에서 냉각시킨 상태에서 이 냉각된 축열재가 냉동차의 축냉수단 내부에 설치된 열교환기 내부를 통과,순환되도록 하여 축냉수단내에 저장된 역시 상변화 물질로 되는 축열재를 냉각시키게 됨에 따라 축냉수단이 설치된 냉동차의 적재고 내부 온도를 비례적 온도 개념이 아닌 항온 개념으로 유지되도록 함으로써, 적재고 내부의 온도를장시간 동안 일정온도 이하로 유지할 수 있게 하여 보다 효율적으로 냉동차의 적재고를 운용할 수 있게 되므로 신선식품에 대한 물류 비용을 절감할 수 있게 되는등의 유용한 효과를 제공할 수 있게 된다.As is clear from the above description, according to the cold storage system using the low temperature latent heat storage material of the present invention, the cooled heat storage material is cooled inside the cold storage means of the refrigerator vehicle while the low temperature latent heat storage material, which is a phase change material, is cooled in the storage means in the late night time zone. By passing through the heat exchanger installed in the heat exchanger and cooling the heat accumulator which is also phase change material stored in the cold storage means, the internal temperature of the refrigerator of the refrigerating vehicle in which the cold storage means is installed is not a proportional temperature concept but a constant temperature concept. By maintaining the temperature inside the warehouse for a long time below a certain temperature, it is possible to operate the refrigerator of the freezer more efficiently, thereby reducing the logistics costs for fresh foods It can be provided.

Claims (1)

다량의 축냉재(11)를 소정 온도 이하로 냉각수단(4)에 의해 냉각,저장할 수 있는 저장수단(1)과, 필요에 따라 냉동차(5)의 축냉수단(2)에 대해 연결수단(3)을 통해 연결되는 저장수단(1)의 냉각된 축냉재(11)를 공급할 수 있도록한 축냉시스템에 있어서,Connecting means for the storage means (1) capable of cooling and storing a large amount of the cool storage material (11) below the predetermined temperature by the cooling means (4) and, if necessary, the storage means (2) of the refrigerator vehicle (5). In the heat storage refrigeration system to supply the cooled heat storage material 11 of the storage means (1) connected through 3), 상기 저장수단(1)과 축냉수단(2)내에 저장되는 축냉재(11)(21)로서 단위 부피당 저장용량이 큰 무기수화물 계열의 저온 잠열 축열재를 사용함과 동시에 상기 축냉수단(2)내에는 열교환기(22)를 설치하여, 상기 저장수단(1)내의 축냉재(11)가As the cold storage materials 11 and 21 stored in the storage means 1 and the cold storage means 2, a low temperature latent heat storage material of inorganic hydrate type having a large storage capacity per unit volume is used and the cold storage means 2 The heat exchanger 22 is installed in the inside, and the heat storage material 11 in the storage means 1 소정 온도로 냉각된 상태에서 필요에 따라 연결수단(3)을 개재하여 축냉수단(2)의 열교환기(22)를 거쳐 순환되게 하는 것에 의해 축냉수단(2)내의 축냉재(21)가 열교환 방식으로 냉각되도록 한 것을 특징으로 하는 저온 잠열 축열재를 이용한 축냉시스템.When the coolant 21 in the cold storage means 2 is circulated through the heat exchanger 22 of the cold storage means 2 via the connecting means 3 as needed in the state cooled to a predetermined temperature. A cold storage system using a low temperature latent heat storage material, characterized in that the cooling by heat exchange method.
KR1020010006780A 2001-02-12 2001-02-12 refrigerating system using a phase change material KR20020066540A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9821700B2 (en) 2014-05-02 2017-11-21 Thermo King Corporation Integrated charging unit for passive refrigeration system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9821700B2 (en) 2014-05-02 2017-11-21 Thermo King Corporation Integrated charging unit for passive refrigeration system

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