| 摘要 |
<p>The present invention relates to a binary refrigeration cycle heat pump system. More specifically, the present invention relates to a binary refrigeration cycle heat pump system capable of allowing a refrigerant in a high-temperature cycle and a refrigerant in a low-temperature cycle or the refrigerant in a low-temperature cycle and hot water in a demand source to selectively exchange heat with each other by a cascade heat exchanger according to a predetermined temperature for the demand source, thereby preventing the system from being down at a high-pressure state due to overheating occurring in an existing binary refrigeration cycle, and improving the efficiency of a refrigeration cycle by producing the hot water from the refrigerant in a low-temperature cycle. In addition, the binary refrigeration cycle heat pump system has a multi-tube heat exchanger through which the supercooling degree of the refrigerant and the suction superheat degree in a compressor can be increased to improve the efficiency of a refrigeration cycle, so enthalpy can be increased to absorb heat sources more. Furthermore, the binary refrigeration cycle heat pump system is capable of allowing one pipe to be branched to be connected to the low-temperature first inlet/outlet of a first plate heat exchanger and the low-temperature second inlet/outlet of a second plate heat exchanger respectively, and is capable of allowing the branched pipe to have a three-way valve, thereby improving heat exchange efficiency by transferring the refrigerant in a low-temperature cycle according to a predetermined temperature of the hot water for the demand source.</p> |
