KR101944754B1 - Cooling water circulation system having structure for preventing cooling water from leaking and air conditioner and server rack cooling system including the same - Google Patents

Cooling water circulation system having structure for preventing cooling water from leaking and air conditioner and server rack cooling system including the same Download PDF

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KR101944754B1
KR101944754B1 KR1020180106315A KR20180106315A KR101944754B1 KR 101944754 B1 KR101944754 B1 KR 101944754B1 KR 1020180106315 A KR1020180106315 A KR 1020180106315A KR 20180106315 A KR20180106315 A KR 20180106315A KR 101944754 B1 KR101944754 B1 KR 101944754B1
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cooling
cooling water
water
cooling coil
coil
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KR1020180106315A
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Korean (ko)
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한승일
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주식회사 에이알
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

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

Abstract

The present invention relates to a cooling water circulation system having a leakage prevention structure, and an objective of the present invention is to provide a cooling water circulation system having a leakage prevention structure, which can prevent leakage of water from a cooling coil by maintaining the internal pressure of the cooling coil at an atmospheric pressure or less. To this end, the present invention provides the cooling water circulation system, which is connected to the cooling coil to receive the cooling water used in the cooling coil, cool the cooling coil, and supply the cooling water to the cooling coil again, wherein the cooling water circulation system comprises: a water supply vessel which is connected to the inlet side of the cooling coil and has a structure, which is opened so that air may communicate to the inner and outer sides; and a heat exchanger which lowers the temperature of the cooling water through exchange of heat between the cooling water and a cooling heat source; a circulation pump which circulates the cooling water through the cooling coil, the heat exchanger, and the water supply vessel; and a controller which controls the cooling water circulation system. The water supply vessel is installed so that the water surface of the stored cooling water is located at a site which is lower than the cooling coil, and the circulation pump is installed to be connected to the outlet side of the cooling coil at a site which is lower than the water surface of the water supply vessel to suction the cooling water inside the cooling coil and circulate the cooling water while maintaining the inside of the cooling coil at the atmospheric pressure or less.

Description

누수방지구조를 갖는 냉각수 순환 시스템과 이를 포함하는 공조장치 및 서버랙 냉각시스템{Cooling water circulation system having structure for preventing cooling water from leaking and air conditioner and server rack cooling system including the same}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling water circulation system having a water leakage preventing structure, an air conditioning apparatus and a server rack cooling system including the cooling water circulation system,

본 발명은 냉각수 순환 시스템에 관한 것으로, 더욱 상세하게는 냉각코일을 순환하는 냉각수(또는 냉수)의 순환구조를 개선하여 냉각코일의 내부 압력을 대기압 이하로 유지시키며, 이를 통해 냉각코일에서 누수가 발생되는 것을 방지할 수 있도록 한 누수방지구조를 갖는 냉각수 순환 시스템에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling water circulation system, and more particularly, to a cooling water circulation system that improves the circulation structure of cooling water circulating through a cooling coil to maintain the internal pressure of the cooling coil at or below atmospheric pressure, To a cooling water circulation system having a water leakage preventing structure for preventing water leakage.

일반적으로 냉각코일은 냉각수와 냉각 대상물의 열교환을 통해 냉각 대상물의 온도를 낮추도록 이루어진 열교환기로, 각종 건물이나 공장 등에 설치되어 해당 공간의 온도와 습도를 적정 수준으로 유지시키는 공기조화기나 항온항습기, 또는 데이터 센터(DATA Center)의 서버랙 쿨러(Server Rack Cooler) 등 다양한 설비에 적용되고 있다.Generally, a cooling coil is a heat exchanger configured to lower the temperature of a cooling object through a heat exchange between cooling water and a cooling object. An air conditioner or a constant temperature and humidity device that is installed in various buildings or factories and maintains the temperature and humidity of the space at an appropriate level, And a server rack cooler of a data center (DATA Center).

한편, 상기 냉각코일은 냉각수 냉각 시스템과 연결되어 냉각수를 제공받으며, 상기 냉각수 냉각 시스템은 냉각코일을 지나 승온된 냉각수의 온도를 다시 낮춘 후 냉각코일을 공급하는 기능을 제공하게 된다.Meanwhile, the cooling coil is connected to the cooling water cooling system to receive cooling water. The cooling water cooling system provides a function of supplying the cooling coil after lowering the temperature of the cooling water passed through the cooling coil again.

즉, 상기 냉각수 냉각 시스템은 열교환기와 펌프를 포함하며, 냉각코일과 펌프 및 열교환기는 배관을 통해 서로 연결되어 냉각수가 냉각코일과 펌프 및 열교환기를 순환하도록 이루어진다.That is, the cooling water cooling system includes a heat exchanger and a pump, and the cooling coil, the pump, and the heat exchanger are connected to each other through piping so that the cooling water circulates the cooling coil, the pump, and the heat exchanger.

이와 같은 종래의 냉각수 냉각 시스템은 펌프에 의해 가압된 냉각수가 그대로 냉각코일로 공급되는 가압식 운전방식으로 이루어진다. 그 이유는 펌프를 고양정으로 운전하더라도 펌프의 흡입측 압력이 대기압 이하가 되어 냉각수 속에 녹아 있던 기체가 분리되는 공동현상(Cavitation)의 우려가 없기 때문이다.In the conventional cooling water cooling system, a pressurized operation mode is employed in which cooling water pressurized by a pump is directly supplied to a cooling coil. This is because, even when the pump is operated with the lifting pump, the suction side pressure of the pump is lower than the atmospheric pressure, and there is no fear of cavitation in which the gas dissolved in the cooling water is separated.

그러나, 상기와 같은 가압식 운전방식의 냉각수 냉각 시스템은 냉각코일에서 크랙(Crack) 등에 의해서 누수가 발생하게 되면, 순환하는 냉각수가 외부로 배출되기 때문에 데이터 센터(DATA Center)의 서버랙 쿨러(Server Rack Cooler)와 같이 냉각 대상물에 근접하여 냉각코일이 설치된 냉각방식에서는 치명적인 결과를 초래하게 되는 문제점이 있다.However, in the cooling water cooling system of the above-described pressurized operation mode, when leakage occurs due to cracks or the like in the cooling coil, the circulating cooling water is discharged to the outside. Therefore, the server rack There is a problem that a cooling method in which a cooling coil is installed close to a cooling object, such as a cooling device, causes a fatal result.

등록특허공보 제10-0876185호(2008.12.31.공고)Patent Registration No. 10-0876185 (published on 31 December 2008)

본 발명은 상기와 같은 문제점을 고려하여 이루어진 것으로, 본 발명의 목적은 냉각코일의 내부 압력을 대기압 이하로 유지시켜 냉각코일에서 누수가 발생하는 것을 방지할 수 있는 누수방지구조를 갖는 냉각수 순환 시스템과 이를 포함하는 공조장치 및 서버랙 냉각시스템을 제공함에 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a cooling water circulation system having a water leakage preventing structure capable of preventing leakage of water from a cooling coil by keeping the internal pressure of the cooling coil at atmospheric pressure or lower And an air conditioning apparatus and a server rack cooling system including the same.

본 발명의 다른 목적은 공동현상이 발생하지 않는 누수방지구조를 갖는 냉각수 순환 시스템과 이를 포함하는 공조장치 및 서버랙 냉각시스템을 제공함에 있다.Another object of the present invention is to provide a cooling water circulation system having a leakage preventing structure in which cavitation does not occur, and an air conditioning apparatus and a server rack cooling system including the cooling water circulation system.

본 발명의 또 다른 목적은 냉각코일의 균열 발생 시, 이를 신속하게 감지하고, 냉각코일 내의 냉각수를 배수하여 냉각수가 균열부위를 통해 누출되는 것을 방지할 수 있는 누수방지구조를 갖는 냉각수 순환 시스템과 이를 포함하는 공조장치 및 서버랙 냉각시스템을 제공함에 있다.It is still another object of the present invention to provide a cooling water circulation system having a water leakage preventing structure capable of quickly detecting a crack of a cooling coil and discharging the cooling water in the cooling coil to prevent the cooling water from leaking through the cracked part, And an air conditioning apparatus and a server rack cooling system.

본 발명의 또 다른 목적은 냉각코일의 표면에 결로가 발생되는 것을 방지할 수 있는 누수방지구조를 갖는 냉각수 순환 시스템과 이를 포함하는 공조장치 및 서버랙 냉각시스템을 제공함에 있다.It is still another object of the present invention to provide a cooling water circulation system having a water leakage preventing structure capable of preventing condensation from occurring on the surface of a cooling coil, and an air conditioning apparatus and a server rack cooling system including the cooling water circulation system.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은 냉각코일과 연결되어 냉각코일에서 사용된 냉각수를 반환받아 냉각한 후 다시 냉각코일로 공급하도록 이루어진 냉각수 순환 시스템에 있어서, 상기 냉각코일의 입구 측에 연결되며, 내외부로의 공기소통이 가능하도록 개방된 구조를 갖는 급수수조; 냉각수와 냉열원의 열교환을 통해 냉각수의 온도를 낮추는 열교환기; 냉각수가 냉각코일과 열교환기 및 급수수조를 순환하도록 유동시키는 순환펌프; 냉각수 순환 시스템을 제어하는 제어기; 상기 급수수조와 냉각코일을 연결하며 제1자동밸브가 설치된 급수관; 제1자동밸브를 우회하는 유로를 형성하도록 상기 급수관에 연결되며 제2자동밸브가 설치된 보조 급수관; 및 상기 보조 급수관에 설치되어 급수수조의 냉각수를 냉각코일로 유동시키는 기동펌프;를 포함하며, 상기 급수수조는 저장된 냉각수의 수면이 냉각코일 보다 낮은 곳에 위치하도록 설치되고, 상기 순환펌프는 급수수조의 수면 보다 낮은 곳에서 냉각코일의 출구 측과 연결되게 설치되어 냉각코일 내부의 냉각수를 흡입하여 냉각코일의 내부를 대기압 이하의 압력으로 유지시키면서 냉각수를 순환시키도록 구성된 것을 특징으로 하는 누수방지구조를 갖는 냉각수 순환 시스템을 제공한다.According to an aspect of the present invention, there is provided a cooling water circulation system connected to a cooling coil to return cooling water used in a cooling coil to supply cooling water to a cooling coil, A water supply tank connected to an inlet side of the cooling coil and having an open structure to allow air communication to the inside and outside; A heat exchanger for lowering the temperature of the cooling water through heat exchange between the cooling water and the cooling source; A circulation pump for circulating the cooling water circulating the cooling coil, the heat exchanger and the water supply tank; A controller for controlling the cooling water circulation system; A water supply pipe connecting the water supply tank and the cooling coil and provided with a first automatic valve; An auxiliary water pipe connected to the water supply pipe to form a flow passage bypassing the first automatic valve and provided with a second automatic valve; And a start pump installed in the auxiliary water supply pipe and configured to cause the cooling water in the water supply tank to flow to the cooling coil, wherein the water supply water tank is installed such that the water surface of the stored cooling water is positioned lower than the cooling coil, Wherein the cooling water is circulated in the cooling coil while maintaining the inside of the cooling coil at a pressure not higher than the atmospheric pressure by being installed to be connected to the outlet side of the cooling coil at a place lower than the water surface, A cooling water circulation system is provided.

삭제delete

한편 상기 누수방지구조를 갖는 냉각수 순환 시스템에 있어서, 상기 냉각코일에 설치되어 공기층의 형성여부를 감지하는 플로트 스위치;가 더 포함될 수 있다.Meanwhile, in the cooling water circulation system having the leakage preventing structure, a float switch installed on the cooling coil and detecting whether an air layer is formed may be further included.

한편 상기 누수방지구조를 갖는 냉각수 순환 시스템에 있어서, 상기 제어기는, 냉각수 순환 시스템의 운전 중, 상기 플로트 스위치에서 공기층의 감지 신호가 발생되었을 때, 냉각코일의 입구 측과 출구 측에 설치된 제3자동밸브와 제4자동밸브를 폐쇄하고, 냉각코일의 배수 측에 설치된 제5자동밸브를 개방하여 냉각코일의 냉각수를 외부로 배출하는 기능을 포함할 수 있다.On the other hand, in the cooling water circulation system having the water leakage prevention structure, when the sensing signal of the air layer is generated in the float switch during the operation of the cooling water circulation system, And closing the valve and the fourth automatic valve and opening the fifth automatic valve provided on the drain side of the cooling coil to discharge the cooling water of the cooling coil to the outside.

한편 상기 누수방지구조를 갖는 냉각수 순환 시스템에 있어서, 상기 제어기는, 냉각수 순환 시스템의 운전이 시작되면, 급수수조의 냉각수를 냉각코일로 공급하도록 마련된 기동펌프의 가동을 통해 급수수조의 냉각수를 냉각코일로 순환시키고, 기동펌프의 가동에 의해 냉각수가 순환되는 과정에서 플로트 스위치에서 공기층의 감지신호가 없어지면, 기동펌프를 정지하고 순환펌프를 가동하여 냉각수를 순환시키는 기능을 포함할 수 있다.On the other hand, in the cooling water circulation system having the water-leakage preventing structure, when the operation of the cooling water circulation system is started, the cooling water of the water supply tank is supplied to the cooling coil through the operation of the starter pump provided to supply the cooling water of the water- And a function of circulating the cooling water by stopping the start pump and operating the circulation pump when the detection signal of the air layer is lost in the float switch in the process of circulating the cooling water by the operation of the starter pump.

한편 상기 누수방지구조를 갖는 냉각수 순환 시스템에 있어서, 상기 냉각코일 입구의 온도와 습도를 검출하는 온습도센서; 및 상기 열교환기의 출구 측에 설치되어 열교환기를 거친 냉각수의 온도를 검출하는 배관온도센서;를 더 포함하고, 상기 제어기는, 상기 온습도센서에서 검출되는 온도와 습도로부터 노점온도를 산출하고, 상기 배관온도센서에서 검출되는 냉각수의 온도가 산출된 노점온도 보다 높게 유지되도록 열교환기로 유입되는 냉열원의 유량을 조절하는 기능을 포함할 수 있다.Meanwhile, in the cooling water circulation system having the water leakage preventing structure, a temperature and humidity sensor for detecting the temperature and humidity of the inlet of the cooling coil; And a pipe temperature sensor installed at an outlet side of the heat exchanger and detecting a temperature of cooling water passing through the heat exchanger, wherein the controller calculates a dew point temperature from the temperature and humidity detected by the temperature / humidity sensor, And a function of adjusting the flow rate of the heat source to be introduced into the heat exchanger so that the temperature of the cooling water detected by the temperature sensor is maintained higher than the calculated dew point temperature.

상기와 같은 특징을 갖는 본 발명에 의하면, 냉각수가 저장된 급수수조가 냉각코일 보다 낮은 곳에 위치하고, 순환펌프는 냉각코일의 냉각수를 흡입하여 순환시키도록 구성됨에 따라 냉각코일의 내부가 대기압 이하의 압력으로 유지되므로, 냉각코일에서 누수가 발생하는 것으로 방지할 수 있으며, 이를 통해 냉각 대상물의 안전도를 높일 수 있는 효과가 있다.According to the present invention, since the water supply tank in which the cooling water is stored is located at a lower position than the cooling coil, and the circulation pump sucks and circulates the cooling water of the cooling coil, Therefore, it is possible to prevent leakage of water from the cooling coil, thereby enhancing the safety of the object to be cooled.

또한, 냉각코일의 균열 발생 시, 균열부위를 통해 유입되는 공기를 플로트 스위치가 감지하여 신호를 발생하고, 발생된 신호에 기초하여 제어기는 자동밸브의 제어를 통해 냉각코일의 냉각수를 외부로 배출하게 되므로, 균열부위를 통해 냉각수가 누출되는 것을 방지할 수 있는 효과가 있다.When the cooling coil is cracked, the float switch senses the air flowing through the cracked portion and generates a signal. Based on the generated signal, the controller discharges the cooling water of the cooling coil through the control of the automatic valve Therefore, it is possible to prevent the cooling water from leaking through the cracked portion.

또한, 냉각코일 입구공기의 노점온도와 냉각수의 온도를 확인하여, 냉각수의 온도를 냉각코일 입구공기의 노점온도 보다 높게 유지함으로써, 냉각코일의 표면에 결로가 발생되는 것을 방지할 수 있는 효과가 있다.Further, there is an effect that it is possible to prevent condensation from being generated on the surface of the cooling coil by checking the dew point temperature of the cooling coil inlet air and the temperature of the cooling water, and keeping the temperature of the cooling water higher than the dew point temperature of the cooling coil inlet air .

도 1 은 본 발명의 바람직한 실시예에 따른 냉각수 순환 시스템의 구조도.1 is a structural view of a cooling water circulation system according to a preferred embodiment of the present invention;

이하, 본 발명의 바람직한 실시예를 첨부된 도면과 연계하여 상세히 설명하면 다음과 같다. 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

도 1은 본 발명의 바람직한 실시예에 따른 냉각수 순환 시스템의 구조도를 도시하고 있다.1 is a structural view of a cooling water circulation system according to a preferred embodiment of the present invention.

본 발명에 따른 냉각수 순환 시스템은 하나 이상의 냉각코일(10)과 연결되어 냉각코일(10)에서 사용된 냉각수를 반환받아 냉각한 후 냉각코일(10)로 다시 공급하는 방식으로 냉각수를 순환시키는 것으로, 본 발명의 바람직한 실시예에 따른 냉각수 순환 시스템은 다수의 냉각코일(10)과 연결되며, 급수수조(110), 열교환기(120), 순환펌프(130), 제어기(140)로 구성된다.The cooling water circulation system according to the present invention circulates the cooling water in such a manner that the cooling water circulating system according to the present invention is connected to one or more cooling coils 10 to return the cooling water used in the cooling coil 10 to be cooled and then supplied again to the cooling coil 10, A cooling water circulation system according to a preferred embodiment of the present invention is connected to a plurality of cooling coils 10 and is composed of a water supply tank 110, a heat exchanger 120, a circulation pump 130, and a controller 140.

한편, 본 발명에서 언급 냉각수는 냉수(chilled water)와 냉각수(cooling water)를 모두 포함한다.On the other hand, the cooling water referred to in the present invention includes both chilled water and cooling water.

상기 급수수조(110)는 일정량의 냉각수를 저장하도록 형성된 탱크로 이루어지되, 내외부로 공기의 소통이 자유롭게 이루어질 수 있도록 상단부가 개방된 탱크로 이루어진다.The water supply water tank 110 is formed of a tank configured to store a predetermined amount of cooling water, and is formed of a tank having an open upper end so that air can be communicated to the inside and outside.

이러한 급수수조(110)는 급수관(171)을 통해 냉각코일(10)과 연결되어 냉각코일(10)로 냉각수를 공급하도록 이루어지며, 바람직하게는 급수수조(110)에 저장된 냉각수의 수면이 냉각코일(10) 보다 낮은 곳에 위치하도록 배치된다.The water supply tank 110 is connected to the cooling coil 10 through a water supply pipe 171 to supply cooling water to the cooling coil 10. The water surface of the cooling water stored in the water supply tank 110 is preferably supplied to the cooling coil 10, (10).

이처럼 급수수조(110)가 냉각코일(10) 보다 낮은 곳에 위치함에 따라 냉각코일(10)의 내부를 대기압 이하의 상태로 보다 용이하게 유지시킬 수 있게 된다.As the water supply tank 110 is positioned lower than the cooling coil 10, the inside of the cooling coil 10 can be more easily maintained under the atmospheric pressure.

한편, 상기 급수관(171)은 냉각코일(10)의 입구(10a) 측에 연결되며, 이러한 급수관(171)에는 후술될 제어기(140)의 제어신호에 의해 개방되거나 폐쇄되는 제1자동밸브(161)와 보조 급수관(172)이 설치된다.The water supply pipe 171 is connected to the inlet 10a side of the cooling coil 10. The water supply pipe 171 is connected to a first automatic valve 161 that is opened or closed by a control signal of a controller 140 And the auxiliary water pipe 172 are installed.

상기 보조 급수관(172)은 제1자동밸브(161)를 우회하는 유로를 형성하는 것으로, 제1자동밸브(161)의 전후를 서로 연결하도록 급수관(171)에 설치되며, 이러한 보조 급수관(172)에는 제어기(140)의 제어신호에 의해 개방되거나 폐쇄되는 제2자동밸브(162)와 기동펌프(150)가 설치된다.The auxiliary water supply pipe 172 forms a flow path bypassing the first automatic valve 161 and is installed in the water supply pipe 171 so as to connect the front and rear of the first automatic valve 161. The auxiliary water supply pipe 172, A second automatic valve 162 opened and closed by a control signal of the controller 140 and a start pump 150 are installed.

한편, 상기 기동펌프(150)는 급수수조(110)의 저장된 냉각수를 냉각코일(10)로 유동시키는 것으로, 냉각수 순환 시스템의 운전이 시작되는 것과 함께 작동하기 시작하여 냉각코일(10) 내부의 공기가 모두 외부로 배출될 때까지만 일시적으로 작동하게 된다.The start pump 150 starts to operate with the start of the operation of the cooling water circulation system by causing the stored cooling water in the water supply tank 110 to flow to the cooling coil 10 so that the air inside the cooling coil 10 Is temporarily operated only until it is discharged to the outside.

한편, 냉각코일(10) 내부에 공기층이 형성되었는지의 여부를 감지하는 플로트 스위치(11)가 냉각코일(10)에 설치되며, 냉각코일(10)로 유입되거나 배출되는 냉각수의 흐름을 단속하기 위한 제3,4,5자동밸브(163,164,165)가 냉각코일(10)에 연결되는 배관에 설치된다.A float switch 11 for detecting whether or not an air layer is formed in the cooling coil 10 is provided on the cooling coil 10 and is provided with a float switch 11 for controlling the flow of cooling water flowing into or out of the cooling coil 10 Second, third, fourth and fifth automatic valves 163, 164 and 165 are installed in the pipe connected to the cooling coil 10.

상기 플로트 스위치(11)는 일반적으로 널리 사용되고 있는 플로트 스위치와 마찬가지로 부유체(미도시됨)를 포함하되, 냉각코일(10)의 내부로 유입된 공기에 의해 냉각코일(10)의 내부에 공기층이 형성된 경우 부유체가 하강하고, 반대로 냉각코일(10)의 내부로 유입된 공기가 모두 배출되어 공기층이 제거된 경우 부유체가 상승하도록 구성된다.The float switch 11 includes a float switch (not shown) similar to a generally used float switch, and an air layer is formed inside the cooling coil 10 by air introduced into the cooling coil 10 When the floating body is formed, the floating body is lowered. On the contrary, when the air introduced into the cooling coil 10 is exhausted and the air layer is removed, the floating body is configured to rise.

따라서, 상기 부유체가 부력에 의해 상승 가능한 가장 높은 곳에 위치한 경우에는 냉각코일(10)의 내부에 공기층이 형성되지 않은 것으로 판단하고, 부유체가 하강한 경우에는 냉각코일(10)의 내부에 공기층이 형성된 것으로 판단하게 된다.Accordingly, when the floating body is located at the highest position where it can be raised by buoyancy, it is determined that no air layer is formed in the cooling coil 10, and when the floating body is lowered, an air layer is formed inside the cooling coil 10 .

상기 제3자동밸브(163)는 급수관(171)에 설치되어 냉각수의 흐름을 단속하되, 냉각코일(10)의 입구(10a) 근접한 곳에서 냉각수의 흐름을 단속하도록 설치된다.The third automatic valve 163 is installed in the water supply pipe 171 to intermit the flow of the cooling water and control the flow of the cooling water near the inlet 10a of the cooling coil 10.

상기 제4자동밸브(164)는 냉각코일(10)의 출구(10b)로부터 순환펌프(130)로 연결되는 배관(173)에 설치되어 냉각수의 흐름을 단속하도록 설치된다.The fourth automatic valve 164 is installed in a pipe 173 connected to the circulation pump 130 from the outlet 10b of the cooling coil 10 so as to control the flow of the cooling water.

상기 제5자동밸브(165)는 냉각코일(10)의 입구(10a)로부터 외부로 연장되게 설치된 배수관(174)에 설치되어 배수관(174)의 유로를 개폐하도록 구성된다.The fifth automatic valve 165 is installed in a drain pipe 174 extending outward from the inlet 10a of the cooling coil 10 to open and close the drain pipe 174.

한편, 냉각수 순환 시스템이 정상적으로 작동하는 경우, 상기 제3자동밸브(163)와 제4자동밸브(164)는 개방되고 제5자동밸브(165)는 폐쇄되며, 냉각코일(10)의 누수가 의심될 경우, 상기 제3자동밸브(163)와 제4자동밸브(164)는 폐쇄되고 제5자동밸브(165)는 개방된다.On the other hand, when the cooling water circulation system operates normally, the third automatic valve 163 and the fourth automatic valve 164 are opened, the fifth automatic valve 165 is closed, and the leakage of the cooling coil 10 is suspected The third automatic valve 163 and the fourth automatic valve 164 are closed and the fifth automatic valve 165 is opened.

상기 열교환기(120)는 냉각수와 냉열원의 열교환을 유도하여 냉각수의 온도를 낮추도록 구성된다.The heat exchanger 120 is configured to induce heat exchange between the cooling water and the cold heat source to lower the temperature of the cooling water.

이러한 열교환기(120)는 급수수조(110)와 순환펌프(130)의 사이에 위치하도록 배치되어 순환펌프(130)로부터 토출되는 냉각수를 제공받아 냉열원와 열교환시킨 후, 급수수조(110) 방출하도록 구성된다.The heat exchanger 120 is disposed to be positioned between the water supply tank 110 and the circulation pump 130 and receives the cooling water discharged from the circulation pump 130 to heat-exchange the refrigerant with the cold source, .

상기 순환펌프(130)는 냉각수를 순환시키는 것으로, 냉각코일(10)과 열교환기(120)의 사이에 위치하도록 배치된다.The circulation pump 130 circulates cooling water, and is disposed between the cooling coil 10 and the heat exchanger 120.

즉, 본 발명에 따른 순환펌프(130)는 냉각코일(10)의 출구(10b)측과 배관(173)을 통해 연결되어 냉각코일(10) 내부의 냉각수를 흡입하여 열교환기(120)로 토출시키는 방식으로 냉각수를 순환시키도록 구성된다.That is, the circulation pump 130 according to the present invention is connected to the outlet 10b side of the cooling coil 10 through a pipe 173 to suck the cooling water in the cooling coil 10 and discharge it to the heat exchanger 120 So as to circulate the cooling water.

이처럼 흡입을 통해 냉각수를 순환시키는 순환펌프(130)는 급수수조(110)의 수면 보다 낮은 곳에 위치하도록 설치되어 펌프 흡입 측에 압입수두를 형성함으로써 공동현상을 방지하는 것이 바람직하다.The circulation pump 130 for circulating the cooling water through the suction is installed to be positioned lower than the water surface of the water supply tank 110 so as to prevent cavitation by forming a press-in head at the suction side of the pump.

즉, 공동현상이 일어나지 않는 유효흡입양정을 수두로 표시한 것을 펌프의 유효흡입양정(NPSH: Net Positive Suction Head)이라 하며, 유효흡입양정은 펌프의 설치상태 및 유체의 온도 등에 따라 다르게 되는데 이것을 펌프설비에서 얻어지는 NPSH(Hav)라 한다. 그런데, 펌프는 그 자체가 필요로 하는 NPSH(Hreq)가 있다. 따라서, 펌프설비에서 얻어지는 NPSH(Hav)는 펌프 자체가 필요로 하는 NPSH(Hreq) 보다 커야만 공동현상이 일어나지 않으며, 일반적으로 약 30%의 여유를 갖도록 하고 있다. 즉,That is, the effective suction head which does not cause cavitation is referred to as the head of the pump, and the effective suction head is different depending on the installed state of the pump, the temperature of the fluid, It is called NPSH (Hav) obtained from the facility. By the way, the pump has the NPSH (Hreq) itself. Therefore, the NPSH (Hav) obtained from the pump facility must be larger than the NPSH (Hreq) required by the pump itself, so that cavitation does not occur, and generally has a margin of about 30%. In other words,

NPSH(Hav) > 1.3 × NPSH(Hreq) ………[계산식 1]NPSH (Hav)> 1.3 x NPSH (Hreq) ... ... ... [Equation 1]

펌프설비에서 얻어지는 NPSH(Hav)의 계산식은 다음과 같다.The calculation formula of NPSH (Hav) obtained from the pump facility is as follows.

Figure 112018088572812-pat00001
………[계산식 2]
Figure 112018088572812-pat00001
... ... ... [Equation 2]

여기서, Pa : 흡입수면의 절대압력[kg/㎡]Pa: Absolute pressure of the suction water surface [kg / m 2]

Ha : 흡입양정으로서 흡상일 때(+), 압입일 때(-)[m]Ha: Suction head (+), Suction head (-) [m]

Hfs : 흡입손실수두[m]Hfs: suction loss head [m]

Pvp : 유체의 온도에 상당하는 포화증기압력[kg/㎡]Pvp: Saturated steam pressure equivalent to fluid temperature [kg / ㎡]

Figure 112018088572812-pat00002
: 유체의 비중량[kg/㎥]
Figure 112018088572812-pat00002
: Specific weight of fluid [kg / m3]

위 [계산식 1]과 [계산식 2]에 따라 수조수면과 순환펌프의 높이차를 Ha로 하게 되면, 공동현상을 방지할 수 있다.According to the above equations [1] and [2], cavitation can be prevented if the water tank surface and the height difference of the circulation pump are made Ha.

상기 제어기(140)는 냉각수 순환 시스템을 제어하는 것으로, 플로트 스위치(11)에서 발생되는 신호에 따라 제1,2,3,4,5자동밸브와 순환펌프(130) 및 기동펌프(150)를 제어하는 기능을 포함한다.The controller 140 controls the cooling water circulation system and controls the first, second, third, fourth, and fifth automatic valves, the circulation pump 130, and the starter pump 150 according to a signal generated from the float switch 11 And the like.

즉, 상기 제어기(140)는 냉각수 순환 시스템의 운전 중, 플로트 스위치(11)에서 공기층의 감지 신호가 발생되었을 때, 제3자동밸브(163)와 제4자동밸브(164)를 폐쇄하여 냉각수의 흐름을 차단한 상태에서 제5자동밸브(165)를 개방하여 냉각코일(10)의 냉각수를 배수관(174)을 통해 모두 외부로 배출시키는 기능을 포함한다.That is, when the sensing signal of the air layer is generated in the float switch 11 during the operation of the cooling water circulation system, the controller 140 closes the third automatic valve 163 and the fourth automatic valve 164 to supply the cooling water The fifth automatic valve 165 is opened while the flow is shut off to discharge the cooling water of the cooling coil 10 through the drain pipe 174 to the outside.

한편, 냉각수 순환 시스템이 정상적으로 작동하는 있는 상황에서 냉각코일(10)의 내부에 공기층이 형성되었다는 것은 공기가 균열부위를 통해 냉각코일(10)의 내부로 유입되었다는 것을 의미하므로, 이러한 상황의 발생 시 냉각코일(10)의 냉각수를 모두 배출시킴으로써 균열부위를 통한 냉각수의 누수를 방지할 수 있게 된다.On the other hand, the fact that the air layer is formed inside the cooling coil 10 in a state where the cooling water circulation system normally operates means that the air has flowed into the cooling coil 10 through the cracked portion. It is possible to prevent the cooling water from leaking through the cracked portion by discharging all of the cooling water from the cooling coil 10. [

또한, 상기 제어기(140)는 정지된 냉각수 순환 시스템의 운전이 시작될 때, 제1자동밸브(161)를 폐쇄하고, 제2자동밸브(162)를 개방한 상태에서 기동펌프(150)의 작동을 통해 급수수조(110)의 냉각수를 냉각코일(10)로 공급하여 냉각코일(10) 내부 공기의 배출을 유도하고, 이러한 과정에서 플로트 스위치(11)로부터 공기층의 감지신호가 발생되지 않으면, 제1자동밸브(161)를 개방하고, 제2자동밸브(162)를 폐쇄하며, 기동펌프(150)를 정지하고, 순환펌프(130)를 가동하여 순환펌프(130)를 이용하여 냉각수를 순환시키는 기능을 포함한다.When the operation of the stopped coolant circulation system is started, the controller 140 closes the first automatic valve 161 and opens the second automatic valve 162 to start the operation of the start pump 150 The cooling water in the water supply tank 110 is supplied to the cooling coil 10 to induce the discharge of the air inside the cooling coil 10. If no sensing signal of the air layer is generated from the float switch 11 during this process, The function of circulating the cooling water by using the circulation pump 130 by opening the automatic valve 161, closing the second automatic valve 162, stopping the start pump 150, operating the circulation pump 130, .

이처럼 냉각수 순환 시스템의 운전 초기에는 기동펌프(150)의 작동을 통해 냉각코일(10) 내부의 공기 배출을 유도함으로써, 원활한 냉각수의 순환이 가능하게 된다.In this way, at the beginning of the operation of the cooling water circulation system, air is discharged from the inside of the cooling coil 10 through the operation of the starter pump 150, so that circulation of cooling water can be smoothly performed.

상기와 같이 구성된 냉각수 순환 시스템에 있어서, 냉각코일(10)에서 결로가 발생되는 것을 방지하기 위한 온습도센서(181)와 배관온도센서(182)가 더 포함될 수 있다.The cooling water circulation system configured as described above may further include a temperature and humidity sensor 181 and a pipe temperature sensor 182 for preventing condensation from occurring in the cooling coil 10.

상기 온습도센서(181)는 냉각코일(10)의 입구 주변에 위치하도록 설치되어 냉각코일(10) 입구의 온도와 습도를 검출하도록 설치된다.The temperature and humidity sensor 181 is installed to be positioned around the inlet of the cooling coil 10 and detects the temperature and humidity of the inlet of the cooling coil 10.

상기 배관온도센서(182)는 열교환기(120)로부터 급수수조(110)로 연결되는 배관(175)에 설치되어 열교환기(120)를 거친 냉각수의 온도를 검출하도록 구성된다.The pipe temperature sensor 182 is installed in a pipe 175 connected to the water supply tank 110 from the heat exchanger 120 to detect the temperature of the cooling water passing through the heat exchanger 120.

한편, 상기 온습도센서(181)에서 검출되는 온도와 습도를 이용하여 냉각코일 입구공기의 노점온도를 산출하고, 이러한 산출된 노점온도와 상기 배관온도센서(182)에서 검출되는 냉각수의 온도를 비교하여 냉각수의 온도가 냉각코일 입구공기의 노점온도 보다 높게 유지될 수 있도록 열교환기(120)로 유입되는 냉열원의 유량을 조절하는 기능이 제어기(140)에 더 포함된다.On the other hand, the dew point temperature of the cooling coil inlet air is calculated using the temperature and humidity detected by the temperature / humidity sensor 181, and the calculated dew point temperature is compared with the temperature of the cooling water detected by the pipe temperature sensor 182 The controller 140 further includes a function of adjusting the flow rate of the heat source flowing into the heat exchanger 120 so that the temperature of the cooling water can be maintained higher than the dew point temperature of the cooling coil inlet air.

즉, 상기 제어기(140)는 냉각수의 온도가 냉각코일 입구공기의 노점온도 보다 낮은 경우 열교환기(120)로 유입되는 냉열원의 유량이 감소하도록 유량조절밸브(183)을 제어하여 열교환기(120)를 지나는 냉각수의 온도를 증가시키게 된다.That is, when the temperature of the cooling water is lower than the dew point temperature of the inlet air of the cooling coil, the controller 140 controls the flow rate control valve 183 to decrease the flow rate of the heat source flowing into the heat exchanger 120, To increase the temperature of the cooling water.

이처럼 냉각수의 온도를 냉각코일 입구공기의 노점온도 보다 높게 유지함으로써, 냉각코일(10) 표면에 발생할 수 있는 통과 공기의 결로를 근본적으로 방지할 수 있으며, 이를 통해 냉각 대상물의 침수사고를 방지할 수 있게 된다.By keeping the temperature of the cooling water higher than the dew point temperature of the cooling coil inlet air, it is possible to fundamentally prevent condensation of the passing air that may occur on the surface of the cooling coil 10, .

상기와 같이 구성된 냉각수 순환 시스템은 항온항습기나 공기조화기와 같은 공지의 공조장치 및 공지의 서버랙 냉각시스템에 적용될 수 있다.The cooling water circulation system configured as described above can be applied to a known air conditioning apparatus such as a thermo-hygrostat, an air conditioner, and a known server rack cooling system.

이상에서 설명된 바와 같이 본 발명에 따른 냉각수 순환 시스템은 냉각코일(10) 보다 낮은 위치에 급수수조(110)가 배치되고, 급수수조(110) 보다 낮은 위치에 순환펌프(130)가 배치되며, 순환펌프(130)는 냉각코일(10)의 출구(10b) 측에 연결되어 냉각수를 흡입하는 방식으로 냉각수를 순환시키도록 구성되므로, 냉각수 순환 시스템이 작동하는 과정에서 냉각코일(10)의 내부압력은 대기압 이하로 유지되어 냉각수의 누수를 효과적으로 방지할 수 있으며, 냉각수의 효과적인 누수방지를 통해 냉각 대상물의 안전도를 높일 수 있게 된다.As described above, in the cooling water circulation system according to the present invention, the water supply water tank 110 is disposed at a lower position than the cooling coil 10, the circulation pump 130 is disposed at a position lower than the water supply water tank 110, The circulation pump 130 is connected to the outlet 10b side of the cooling coil 10 and is configured to circulate the cooling water in a manner of sucking the cooling water. Therefore, in the process of operating the cooling water circulation system, Can be kept below the atmospheric pressure to effectively prevent the leakage of the cooling water, and the safety of the cooling object can be improved through effective prevention of the leakage of the cooling water.

또한, 냉각수 순환 시스템에 연결된 다수의 냉각코일(10) 중 일부 냉각코일(10)이 손상되어 보수작업이 요구되는 경우, 해당 냉각코일(10)로 냉각수가 순환되는 것을 차단한 상태에서 보수작업의 실시가 가능하므로, 냉각수 순환 시스템 전체를 정지하지 않고 특정 냉각코일(10)에 대한 보수작업이 가능하게 된다.When a part of the plurality of cooling coils 10 connected to the cooling water circulation system is damaged and a repair operation is required, the circulation of the cooling water to the cooling coil 10 is blocked, It is possible to perform the maintenance work for the specific cooling coil 10 without stopping the entire cooling water circulation system.

본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

<도면의 주요 부분에 대한 부호의 설명>
10: 냉각코일 11: 플로트 스위치
110: 급수수조 120: 열교환기
130: 순환펌프 140: 제어기
150: 기동펌프 161: 제1자동밸브
162: 제2자동밸브 163: 제3자동밸브
164: 제4자동밸브 165: 제5자동밸브
171: 급수관 172: 보조 급수관
181: 온습도센서 182: 배관온도센서Description of the Related Art
10: cooling coil 11: float switch
110: water supply tank 120: heat exchanger
130: circulation pump 140: controller
150: starter pump 161: first automatic valve
162: second automatic valve 163: third automatic valve
164: fourth automatic valve 165: fifth automatic valve
171: water pipe 172: auxiliary water pipe
181: Temperature and humidity sensor 182: Pipe temperature sensor

Claims (8)

냉각코일(10)과 연결되어 냉각코일(10)에서 사용된 냉각수를 반환받아 냉각한 후 다시 냉각코일(10)로 공급하도록 이루어진 냉각수 순환 시스템에 있어서,
상기 냉각코일(10)의 입구(10a) 측에 연결되며, 내외부로의 공기소통이 가능하도록 개방된 구조를 갖는 급수수조(110);
냉각수와 냉열원의 열교환을 통해 냉각수의 온도를 낮추는 열교환기(120);
냉각수가 냉각코일(10)과 열교환기(120) 및 급수수조(110)를 순환하도록 유동시키는 순환펌프(130);
냉각수 순환 시스템을 제어하는 제어기(140);
상기 급수수조(110)와 냉각코일(10)을 연결하며 제1자동밸브(161)가 설치된 급수관(171);
제1자동밸브(161)를 우회하는 유로를 형성하도록 상기 급수관(171)에 연결되며 제2자동밸브(162)가 설치된 보조 급수관(172); 및
상기 보조 급수관(172)에 설치되어 급수수조(110)의 냉각수를 냉각코일(10)로 유동시키는 기동펌프(150);를 포함하며,
상기 급수수조(110)는 저장된 냉각수의 수면이 냉각코일(10) 보다 낮은 곳에 위치하도록 설치되고,
상기 순환펌프(130)는 급수수조(110)의 수면 보다 낮은 곳에서 냉각코일(10)의 출구(10b)측과 연결되게 설치되어 냉각코일(10) 내부의 냉각수를 흡입하여 냉각코일(10)의 내부를 대기압 이하의 압력으로 유지시키면서 냉각수를 순환시키도록 구성된 것을 특징으로 하는 누수방지구조를 갖는 냉각수 순환 시스템.The cooling water circulation system is connected to the cooling coil (10) to return the cooling water used in the cooling coil (10) to cool it, and then supply it to the cooling coil (10)
A water supply water tank 110 connected to the inlet 10a side of the cooling coil 10 and having an open structure to allow air communication to the inside and outside;
A heat exchanger 120 for lowering the temperature of the cooling water through heat exchange between the cooling water and the cooling source;
A circulation pump 130 for circulating the cooling water circulating the cooling coil 10, the heat exchanger 120, and the water supply tank 110;
A controller 140 for controlling the cooling water circulation system;
A water supply pipe (171) connecting the water supply tank (110) and the cooling coil (10) and equipped with a first automatic valve (161);
An auxiliary water pipe 172 connected to the water supply pipe 171 so as to form a passage bypassing the first automatic valve 161 and having a second automatic valve 162 installed therein; And
And a start pump (150) installed in the auxiliary water supply pipe (172) to flow the cooling water of the water supply tank (110) to the cooling coil (10)
The water supply water tank 110 is installed such that the water surface of the stored cooling water is located lower than the cooling coil 10,
The circulation pump 130 is connected to the outlet 10b side of the cooling coil 10 at a position lower than the water surface of the water supply tank 110 so that the cooling water in the cooling coil 10 is sucked into the cooling coil 10, Is configured to circulate the cooling water while maintaining the interior of the cooling water at a pressure equal to or lower than the atmospheric pressure. 삭제delete 청구항 1에 있어서,
상기 냉각코일(10)에 설치되어 공기층의 형성여부를 감지하는 플로트 스위치(11);를 더 포함하는 것을 특징으로 하는 누수방지구조를 갖는 냉각수 순환 시스템.The method according to claim 1,
And a float switch (11) installed in the cooling coil (10) for detecting whether or not an air layer is formed. 청구항 3에 있어서,
상기 제어기(140)는, 냉각수 순환 시스템의 운전 중, 상기 플로트 스위치(11)에서 공기층의 감지 신호가 발생되었을 때, 냉각코일(10)의 입구(10a)측과 출구(10b) 측에 설치된 제3자동밸브(163)와 제4자동밸브(164)를 폐쇄하고, 냉각코일(10)의 배수 측에 설치된 제5자동밸브(165)를 개방하여 냉각코일(10)의 냉각수를 외부로 배출하는 기능을 포함하는 것을 특징으로 하는 누수방지구조를 갖는 냉각수 순환 시스템.The method of claim 3,
The controller 140 controls the operation of the cooling coil 10 such that when the detection signal of the air layer is generated in the float switch 11 during operation of the cooling water circulation system, The third automatic valve 163 and the fourth automatic valve 164 are closed and the fifth automatic valve 165 provided on the drain side of the cooling coil 10 is opened to discharge the cooling water of the cooling coil 10 to the outside Wherein the cooling water circulation system has a water leakage preventing structure. 청구항 3에 있어서,
상기 제어기(140)는, 냉각수 순환 시스템의 운전이 시작되면, 급수수조(110)의 냉각수를 냉각코일(10)로 공급하도록 마련된 기동펌프(150)의 가동을 통해 급수수조(110)의 냉각수를 냉각코일(10)로 순환시키고, 기동펌프(150)의 가동에 의해 냉각수가 순환되는 과정에서 플로트 스위치(11)에서 공기층의 감지신호가 없어지면, 기동펌프(150)를 정지하고 순환펌프(130)를 가동하여 냉각수를 순환시키는 기능을 포함하는 것을 특징으로 하는 누수방지구조를 갖는 냉각수 순환 시스템.The method of claim 3,
When the operation of the cooling water circulation system is started, the controller 140 controls the cooling water in the water supply tank 110 through the operation of the starter pump 150, which is provided to supply the cooling water in the water supply tank 110 to the cooling coil 10 When the detection signal of the air layer is lost in the float switch 11 in the process of circulating the cooling water by the operation of the starter pump 150 and stopping the starter pump 150 and stopping the circulation pump 130, So as to circulate the cooling water. The cooling water circulation system according to claim 1, 청구항 1에 있어서,
상기 냉각코일(10) 입구의 온도와 습도를 검출하는 온습도센서(181); 및
상기 열교환기(120)의 출구 측에 설치되어 열교환기(120)를 거친 냉각수의 온도를 검출하는 배관온도센서(182);를 더 포함하고,
상기 제어기(140)는, 상기 온습도센서(181)에서 검출되는 온도와 습도로부터 노점온도를 산출하고, 상기 배관온도센서(182)에서 검출되는 냉각수의 온도가 산출된 노점온도 보다 높게 유지되도록 열교환기(120)로 유입되는 냉열원의 유량을 조절하는 기능을 포함하는 것을 특징으로 하는 누수방지구조를 갖는 냉각수 순환 시스템.The method according to claim 1,
A temperature and humidity sensor 181 for detecting the temperature and humidity of the inlet of the cooling coil 10; And
And a pipe temperature sensor (182) installed at the outlet side of the heat exchanger (120) and detecting the temperature of the cooling water passing through the heat exchanger (120)
The controller 140 calculates the dew point temperature from the temperature and humidity detected by the temperature and humidity sensor 181 and controls the temperature of the cooling water detected by the piping temperature sensor 182 to be higher than the calculated dew point temperature, And a function of regulating the flow rate of the cold heat source flowing into the cooling water circulation system (120). 유입되는 공기의 냉각을 위한 냉각코일; 및
상기 냉각코일로 냉각수를 순환시키되, 상기 청구항 1, 3, 4, 5, 6 중 어느 한 항에 따른 구조를 갖는 누수방지구조를 갖는 냉각수 순환 시스템;을 포함하는 것을 특징으로 하는 공조장치.A cooling coil for cooling the incoming air; And
And a cooling water circulation system having a leakage preventing structure having a structure according to any one of claims 1, 3, 4, 5 and 6, wherein the cooling water is circulated through the cooling coil. 서버랙의 냉각을 위한 냉각코일; 및
상기 냉각코일로 냉각수를 순환시키되, 상기 청구항 1, 3, 4, 5, 6 중 어느 한 항에 따른 구조를 갖는 누수방지구조를 갖는 냉각수 순환 시스템;을 포함하는 것을 특징으로 하는 서버랙 냉각시스템.A cooling coil for cooling the server rack; And
And a cooling water circulation system having a leakage preventing structure having a structure according to any one of claims 1, 3, 4, 5 and 6, wherein the cooling water is circulated through the cooling coil.
KR1020180106315A 2018-09-06 2018-09-06 Cooling water circulation system having structure for preventing cooling water from leaking and air conditioner and server rack cooling system including the same KR101944754B1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2954513B2 (en) * 1995-10-26 1999-09-27 リンナイ株式会社 Absorption air conditioner
JP2002327936A (en) * 2001-02-28 2002-11-15 Hitachi Chem Co Ltd Bathroom heater/dryer
JP3404969B2 (en) * 1995-02-23 2003-05-12 三浦工業株式会社 Method for judging abnormality of heat exchanger in circulation chiller
JP2003167100A (en) * 2001-12-03 2003-06-13 Ushio Inc Ultraviolet ray irradiation device
KR100876185B1 (en) 2008-05-02 2008-12-31 주식회사 에이알 Energy-saving type thermo-hygrostat, its current thermo-cooling method and cooling/dehumidifying method thereof
JP2012167833A (en) * 2011-02-10 2012-09-06 Ntt Facilities Inc Secondary refrigerant air conditioning system and operation method of the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3404969B2 (en) * 1995-02-23 2003-05-12 三浦工業株式会社 Method for judging abnormality of heat exchanger in circulation chiller
JP2954513B2 (en) * 1995-10-26 1999-09-27 リンナイ株式会社 Absorption air conditioner
JP2002327936A (en) * 2001-02-28 2002-11-15 Hitachi Chem Co Ltd Bathroom heater/dryer
JP2003167100A (en) * 2001-12-03 2003-06-13 Ushio Inc Ultraviolet ray irradiation device
KR100876185B1 (en) 2008-05-02 2008-12-31 주식회사 에이알 Energy-saving type thermo-hygrostat, its current thermo-cooling method and cooling/dehumidifying method thereof
JP2012167833A (en) * 2011-02-10 2012-09-06 Ntt Facilities Inc Secondary refrigerant air conditioning system and operation method of the same

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