HC-600制冷剂应用及注意(Application and attention of HC - 600 refrigerant).docVIP

HC-600制冷剂应用及注意(Application and attention of HC - 600 refrigerant).doc

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HC-600制冷剂应用及注意(Application and attention of HC - 600 refrigerant)

HC-600制冷剂应用及注意(Application and attention of HC - 600 refrigerant) 08:36 2008-11-14 fourth parties to protect the ozone layer protocol according to the 1992 Copenhagen conference resolution, developed countries refrigerator has banned CFCs refrigerants and foaming agent, developing countries have banned CFCs refrigerants and foaming agent date draws near. Currently, there are two main alternatives to CFCs refrigerants, namely, the use of hfc-134a in the United States and Japan to replace the cfc-12 programme and the eu-led hc-600a instead of cfc-12. In contrast, hfc-134as GWP (greenhouse effect coefficient) is not zero, producing a greenhouse effect, one of the limiting gases in the Kyoto protocol. So its not the ultimate alternative; The ODP (ozone destruction coefficient) of hc-600a = 0, GWP = 0, no greenhouse effect, which is the final replacement of a single step. The following is a description of the features of the hc-600a refrigerant, the design points of the hc-600a refrigerator and the product failure maintenance process. Ii. Design difference of refrigeration system Compressor: HC - 600 - a special, CFC - 12 cylinder volume ratio increases about 70%, as the mineral oil, lubricating oil seal or solid type start and protection devices, C0P value is higher, low vibration noise, high and low voltage difference is small, operation condition is superior. 2. The condenser and evaporator are basically the same as the cfc-12 system. The capillary length should be adjusted according to the test case on the basis of CFC -12, and generally should be reduced slightly. 4. Use xh-9 for drying filters. 5. The amount of hc-600a is about 35% of CFC -12, and the specific values are determined by the test and the requirements are more accurate. Error plus or minus 1 g. Safety design principles Three conditions of combustion explosion of HC - 600a refrigerant: (1) leakage of iso-butane refrigerant; (2) the leakage of iso-butane refrigerants reached the explosion concentration

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