An indirect cooling system capable of arbitrarily controlling temperature and humidity of a low-temperature storage house according to the present invention, as a cooling system applied to a large agricultural product storage house, is composed of a first circulation system and a second circulation system. The first circulation system includes: a compressor compressing a gaseous coolant at high pressure and high temperatures a condenser phase-changing the coolant into a liquid by heat-exchanging the coolant discharged from the compressor with air or water a liquid receiver temporarily storing the coolant discharged from the condenser an expansion valve phase-changing the liquid coolant into a gas by adiabatically expanding the liquid coolant discharged from the liquid receiver and an evaporator converting the coolant discharged from the expansion valve into a gas at high temperatures and low pressure by heat-exchanging the coolant with a brine. The second circulation system includes a surge tank temporarily storing the brine which is in a low-temperature liquid state due to a thermal loss caused by the heat exchange with the coolant by the evaporator of the first circulation system and temporarily storing the brine of which the temperature increases due to the heat exchange with air inside the storage house and a cooling unit heat-exchanging the brine forcibly sent from the surge tank with the air inside the storage house. The cooling unit includes multiple heat exchange units separately formed. The heat exchange unit is formed to mix some of the brine heat-exchanged with the air inside the storage house with the low-temperature brine supplied to the heat-exchange unit from the surge tank, thus the brine is re-circulated. Accordingly, the temperature of the brine supplied to the cooling unit is controlled.COPYRIGHT KIPO 2016본 발명에 따른 저온 저장고의 온도 및 습도의 임의 제어가 가능한 간접 냉각 시스템은, 대규모 농산물 저장고에 적용되는 냉각 시스템으로서, 기체 상태의 냉매를 고온 고압으로 압축하는 압축기 상기 압축기에서 토출된 냉매를 공기 또는 물과 열교환
