摘要
Thepinchpointisimportantforanalyzingheattransferinthermodynamiccycles.Withtheaimtorevealtheimportanceofdetenniningtheaccuratepinchpoint,theresearchonthepinchpointpositioniscarriedoutbytheoreticalmethod.Theresultsshowthatthepinchpointpositiondependsontheparametersoftheheattransferfluidsandthemajorfluidproperties.Inmostcases,thepinchpointlocatesatthebubblepointfortheevaporatorandthedewpointforthecondenser.However,thepinchpointshiftstothesupercooledliquidstateinthenearcriticalconditionsfortheevaporator.Similarly,itshiftstothesuperheatedvaporstatewiththecondensingtemperatureapproachingthecriticaltemperatureforthecondenser.Itevencanshifttotheworkingfluidentranceoftheevaporatororthesupercriticalheaterwhentheheatsourcefluidtemperatureisveryhighcomparedwiththeabsorbingheattemperature.Awrongpositionforthepinchpointmaygenerateseriousmistake.Inbrief,thepinchpointshouldbefoundedbytheiterativemethodinallconditionsratherthantakingforgranted.
出版日期
2016年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
