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    Transport Refrigeration Units By Way Of Cooling Sep 15, 2017

    Transport Refrigeration Units By way of cooling

    Transport refrigeration units according to the way of cooling, a large category can be divided into water-cooled chiller and air-cooled chiller, technically, water-cooled chiller than air-cooled chiller energy efficiency ratio of 300 to 500 kcal / h; At the price, the water-cooled chiller is much lower than the air-cooled chiller; in the installation, the water-cooled chiller needs to be included in the cooling tower, the external water pump can be used, the air-cooled chiller is movable, Take the space, no other auxiliary, connected to the power can be used, but the air-cooled chiller only fan cooling, the environment has pleaded: for example, ventilation, humidity, temperature can not be high 40 ℃, air pH and so on. Many people do not know the water-cooled chiller and air-cooled chiller which is good? In fact, each has its own spring and autumn, for their own conditions of use is good.

        According to the majority of micro-friends of the question, "air-cooled chiller is how the cold" Today, small tape with everyone to understand how the air-cooled chiller is how to cool, first of all need to understand the air-cooled chiller is composed of what parts, the main work system which?

        Air-cooled chillers use refrigerant (low-temperature low-pressure high-temperature high-pressure gas liquid) to cool water, air-cooled chiller generally by the compressor, evaporator, condenser, expansion valve, refrigerant, water pump, water tank, refrigerant The Air-cooled chillers refrigeration system components:

        Condenser: During the cooling process, the condenser acts to output heat and condense the refrigerant. After the high pressure superheated steam discharged from the refrigeration compressor enters the condenser, it absorbs all the heat absorbed during the working process, including the heat absorbed from the evaporator and the refrigeration compressor and in the pipe, to the surrounding medium (water or Air) away; the refrigerant high-pressure superheated steam is re-condensed into a liquid. (Depending on the cooling medium and the cooling method, the condenser can be divided into three categories: water-cooled condenser, air-cooled condenser, evaporative condenser.)

        The accumulator is installed in the condenser and is in direct communication with the drain of the condenser. The refrigerant in the condenser should flow unimpeded into the reservoir so that the cooling area of the condenser can be fully utilized. On the other hand, when the heat load of the evaporator is changed, the amount of the refrigerant liquid is also changed, and the reservoir functions to adjust and store the refrigerant. For small chillers refrigeration system, often do not install the reservoir, but the use of condenser to adjust and store the refrigerant.

        Drying filter: In the chiller cooling cycle must be to prevent water and dirt (oil, iron, copper) and other entry, the main source of water is newly added refrigerant and lubricants contained trace moisture, or because Overhaul the system when the air into the water. If the water in the system is not removed, when the refrigerant through the throttle (thermal expansion valve or capillary), due to pressure and temperature drop sometimes water will freeze into ice, so that the channel block, affecting the normal operation of the refrigeration device. Therefore, a dry filter must be installed in the chiller cooling system.