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1. 发明授权

US07818971B2 CO2 cooling and heating apparatus and method having multiple refrigerating cycle circuits 失效
标题翻译：具有多个制冷循环回路的二氧化碳冷却和加热装置及方法
公开(公告)号：US07818971B2
公开(公告)日：2010-10-26
申请号：US12105169
申请日：2008-04-17
申请人： Hiroshi Yamaguchi , Katsumi Fujima , Nelson Mugabi , Choiku Yoshikawa
发明人： Hiroshi Yamaguchi , Katsumi Fujima , Nelson Mugabi , Choiku Yoshikawa
IPC分类号： F25B1/00
CPC分类号： F25B9/008 , F25B1/10 , F25B7/00 , F25B2309/061 , F25B2400/02 , F25B2400/13
摘要： A CO2 cooling and heating apparatus and method permit simultaneous production of high-temperature heat source and low-temperature heat source having a temperature difference therebetween. The apparatus/method uses CO2 (carbon dioxide) as a refrigerant, and has a first refrigerating cycle circuit where the refrigerant is compressed to a supercritical zone and then decompressed via an expansion device to a pressure/temperature level of the CO2 triple point or below to thereby attain evaporation. The apparatus can include multistage compressors, intermediate cooler disposed in a first refrigerant flow path between a condenser and the expansion device. A second refrigerating cycle circuit having a second refrigerant flow path, which can branch off from the first refrigerant flow path or provided in an independent closed circuit, can be provided to carry out absorption of evaporation latent heat with the first refrigerant flow path to thereby maintain the pressure/temperature level of the CO2 triple point (Ptr) or above. A third refrigerating cycle circuit having a third refrigerant flow path also can be provided to carry out heat exchange with the second refrigerant flow path.
摘要翻译：二氧化碳冷却和加热装置和方法允许同时生产其间具有温差的高温热源和低温热源。该装置/方法使用二氧化碳（二氧化碳）作为制冷剂，并且具有第一制冷循环回路，其中制冷剂被压缩至超临界区，然后经由膨胀装置减压至CO 2三重点或更低的压力/温度水平从而实现蒸发。该装置可以包括设置在冷凝器和膨胀装置之间的第一制冷剂流动路径中的多级压缩机，中间冷却器。可以提供第二制冷循环回路，其具有可以从第一制冷剂流动路径分支或设置在独立闭路中的第二制冷剂流路，以实现与第一制冷剂流动路径的蒸发潜热的吸收，从而维持 CO2三重点（Ptr）或以上的压力/温度水平。也可以设置具有第三制冷剂流路的第三制冷循环回路，与第二制冷剂流路进行热交换。

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