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Five basic parts of any refrigerator (or air-conditioning system) ËùÓÐÖÂÀä»ú±ØÐè¾ß±¸µÄÎå´ó»ù±¾µ¥Ôª Compressor (ѹËõ»ú) Heat-exchanging pipes (ÈȽ»»»¹Ü) or Condensor (ÀäÄýÆ÷) - serpentine or coiled set of pipes outside the unit Expansion valve (ÅòÕÍ·§) Heat-exchanging pipes or evaporator (Õô·¢Æ÷)- serpentine or coiled set of pipes inside the unit Refrigerant (Àäý) - liquid that evaporates inside the refrigerator to create the cold temperatures Refrigerant (Àäý) Many industrial installations use pure ammonia as the refrigerant. Ðí¶àÖÂÀä»ú³£Ê¹Óô¿°±(°¢ÄªÄáÑÇ)×öΪÀäý Pure ammonia evaporates at -32oC ´¿°±ÀäýµÄÕô·¢Î¶ÈÔÚÒ»´óÆøÑ¹ÏÂΪ-32oC Basic Mechanism of a Refrigerator Works ÖÂÀä»úÔË×÷µÄ»ù±¾»úÖÆ A.±ùÏäÄÚ²¿ ÈȽ»»»¹Ü ±ùÏäÄÚµÄÈȽ»»»¹Ü: 1.¹ÜÖÐΪµÍѹµÍÎÂÀäý 2.¹ÜÖеĵÍÎÂÀäýºÍ±ùÏäÄÚ²¿µÄÈÈ¿ÕÆø½»»»ÈÈÁ¿,ÒÔ½µµÍ±ùÏäÄÚ¿ÕÆøµÄζÈ. 3.ΪµÈѹÈȽ»»»¹ý³Ì ÀäýÁ÷¶¯µÄ·½Ïò B.ѹËõ»ú: 1.×¼µÈÎÂѹËõ¹ý³Ì 2.½«»ØÁ÷»ØÀ´µÄµÍѹÀäý¼Óѹ³É¸ßѹÀäý,Éõ»òÒº»¯³ÉҺ̬Àäý. C.ëϸ¹ÜʽµÄÅòÕÍ·§: 1.Ôڴ˽øÐоøÈÈÅòÕ͵ÄÈÈÁ¦±ä»¯ÎïÀí¹ý³Ì 2.½«¸ßѹÀäý»òÒº»¯Àäý¾´Ë·§,ͻȻÅòÕÍΪµÍεÍѹÀäý,Éõ»òÊ¹Ö®Æø»¯ÎªÆøÌ¬µÍÎÂÀäý. Basic mechanism of a refrigerator works The compressor compresses the refrigerant gas. This raises the refrigerant's pressure and temperature (orange), so the heat-exchanging coils outside the refrigerator allow the refrigerant to dissipate the heat of pressurization. As it cools, the refrigerant condenses into liquid form (purple) and flows through the expansion valve. When it flows through the expansion valve, the liquid refrigerant is allowed to move from a high-pressure zone to a low-pressure zone, so it expands and evaporates (light blue). In evaporating, it absorbs heat, making it cold. The coils inside the refrigerator allow the refrigerant to absorb heat, making the inside of the refrigerator cold. The cycle then repeats. ʹÓÃÊÙÃü ÓÉì¶µç±ùÏäÊǸߵµÄÍÓÃÆ·,¹ÊʹÓÃÊÙÃüÊÇÒ»ÏîÖØÒªÖ¸±ê. 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