_ Snow Dragon York chiller chilled water cooling maintenance (certified) _ houjie chilled water machine provided by the Dongguan City-long Refrigeration Electrical and Mechanical Equipment Engineering Co., Ltd. Dongguan City-long Refrigeration Electrical Equipment Engineering Co., Ltd. (www.dgxuelong.com) is a professional engaged in "sales, installation, maintenance, electrical and mechanical equipment (excluding Holds for repair of electrical equipment), refrigeration equipment," the business, the company adhering to the "integrity management, service intentions, "the idea, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Fu. When the refrigeration system evaporator liquid Freon into the expansion valve orifice into the evaporator, is vaporised water-cooler manufacturing process, this time the need to absorb a lot of heat, so that the cooled fluid temperature gradually reduce the price in order to achieve refrigeration cooling effect. Well, according to media types can be divided into the cooled cooling liquid (water) in the evaporator (dry evaporator) and the evaporator cooling air used (Table cold evaporator) two categories. Here introduces the chiller evaporator refrigeration system used generally for dry shell and tube evaporator. As shown, the refrigerant evaporated in the heat exchange tubes, the water in the shell and tube side of the flow, to increase heat exchange efficiency, is provided in the shell and tube side 2mm thick flap, so that the water flows back and forth around the chilled water machine, to achieve the purpose of the ice produced brine, The shell is made of container over 6mm thickness steel pipe Carrier chiller, can withstand 10 Kg / cm, external to the PE foam board insulation. Seamless and efficient heat exchange tube with copper, the embossing process processed into the internal thread-fin tube to increase the heat transfer area, and improve the efficiency of heat transfer, pressure 20 Kg / cm; solid end plate production structure, the heat exchange tubes and the end plate of the expander type combined, and added to a separator within the end cap so that the refrigerant flows into the multiplexer, in order to keep the refrigeration oil reflux, refrigerant liquid pipe and the low pressure pipe are connected to the work of the valve, the total heat transfer coefficient should can allow 0.086 M2 ℃ / KW scaling factor, the pressure drop through the evaporator, the water does not exceed 6.5mAq. Refrigeration system has four major components: a compressor, evaporator, condenser, expansion valve. Refrigeration compressor power is guaranteed by a compressor to increase the pressure within the system refrigerant, the refrigerant circulating in the refrigeration system, to achieve the purpose of cooling. Its air-cooled condenser structure is mainly composed of several groups of brass evaporator is generally dry shell and tube evaporator.