CAJ | 학술논문

随着节能减排、提高能效的需求增大，高温热泵和能量回收系统的研究及应用日益广泛。高温热泵主要有两种类型，一种是使用R245fa等高温工质的高温热泵，另一种是采用水蒸汽介质的高温热泵；能量回收系统也有两种形式，即有机工质郎肯循环（ORC）余热回收以及采用水蒸汽膨胀的回收系统。双螺杆压缩机及膨胀机作为此类系统的核心部件，对系统的性能有着重要的影响。本文介绍了双螺杆压缩机及膨胀机在这类系统中的应用情况，并给出了一些研究进展和应用案例。
수착절능감배、제고능효적수구증대，고온열빙화능량회수계통적연구급응용일익엄범。고온열빙주요유량충류형，일충시사용R245fa등고온공질적고온열빙，령일충시채용수증기개질적고온열빙；능량회수계통야유량충형식，즉유궤공질랑긍순배（ORC）여열회수이급채용수증기팽창적회수계통。쌍라간압축궤급팽창궤작위차류계통적핵심부건，대계통적성능유착중요적영향。본문개소료쌍라간압축궤급팽창궤재저류계통중적응용정황，병급출료일사연구진전화응용안례。
The demanding of energy conservation, emissions reduction and energy efficiency improvement becomes greater and greater nowadays, so that further investigations and applications on high-temperature heat pumps and energy recovery system are being widely conducted. The high-temperature heat pump mainly includes two kinds of system:heat pumps using R245fa as working medium and those adopting water as working fluid. The energy recovery systems also have two forms of application, i.e., organic rankine cycle (ORC) and water vapor expanding system. In such systems, twin screw compressors and expanders act as key parts, which influences the performance significantly. The application of twin screw compressors and expanders in these systems was introduced, and the research progress and application cases were presented.