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유기랭킨사이클(ORC)을 위한 주전열면 열교환기의 채널 종횡비에 따른 유동 및 열전달 특성
성민제(M.J. Sung),안준(J. Ahn) 한국전산유체공학회 2013 한국전산유체공학회지 Vol.18 No.4
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger, which is designed for the evaporator and condenser of a geothermal ORC. Working fluid is geothermal water at hot side and R-245fa, which is a refrigerant designed for ORC, at cold side. Aspect ratio of the channel and Reynolds number are considered as design parameters. Nusselt number is presented for the Reynolds number ranging from 50 to 150 and compared to existing correlations. The result shows that higher aspect ratio channel gives better heat transfer performance within the range of investigation.
유기랭킨사이클(ORC)을 위한 주전열면 열교환기의 채널주름비에 따른 유동 및 열전달 특성
성민제(M.J. Sung),안준(J. Ahn) 한국전산유체공학회 2013 한국전산유체공학회 학술대회논문집 Vol.2013 No.10
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger, which is designed for the evaporator and condenser of a geothermal ORC. Working fluid is geothermal water at hot side and R-245fa, which is a refrigerant designed for ORC, at cold side. Amplitude ratio of the channel and Reynolds number are considered as design parameters. Nusselt number is presented for the Reynolds number ranging from 50 to 150 and compared to existing correlations. The result shows that higher amplitude ratio channel gives better heat transfer performance within the range of investigation.
Primary surface type 열교환기의 형상 변화에 따른 열전달 특성
성민제(M.J. Sung),안준(J. Ahn) 한국전산유체공학회 2013 한국전산유체공학회 학술대회논문집 Vol.2013 No.5
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger. Effects of aspect ratio and amplitude are considered. Working fluid is geothermal water at hot side. R-245fa is used at cold side which is for ORC(Organic Rankine Cycle). Nusselt number is presented for the Reynolds number(50≤Re≤150). The result shows that the higher aspect ratio channel gives better heat transfer efficiency.
유기랭킨사이클(ORC)을 위한 주전열면 열교환기의 채널 종횡비에 따른 유동 및 열전달 특성
성민제(M.J. Sung),안준(J. Ahn) 한국전산유체공학회 2013 한국전산유체공학회지 Vol.18 No.4
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger, which is designed for the evaporator and condenser of a geothermal ORC. Working fluid is geothermal water at hot side and R-245fa, which is a refrigerant designed for ORC, at cold side. Aspect ratio of the channel and Reynolds number are considered as design parameters. Nusselt number is presented for the Reynolds number ranging from 50 to 150 and compared to existing correlations. The result shows that higher aspect ratio channel gives better heat transfer performance within the range of investigation.