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Investigation on the Pinch Point Position in Heat Exchangers
Pan LS(潘利生); Shi Weixiu; Pan, LS (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.; Shi, WX (reprint author), Beijing Univ Civil Engn & Architecture, Sch Environm & Energy Engn, Beijing 100044, Peoples R China.
Source PublicationJOURNAL OF THERMAL SCIENCE
2016
Volume25Issue:3Pages:258-265
ISSN1003-2169
AbstractThe pinch point is important for analyzing heat transfer in thermodynamic cycles. With the aim to reveal the importance of determining the accurate pinch point, the research on the pinch point position is carried out by theoretical method. The results show that the pinch point position depends on the parameters of the heat transfer fluids and the major fluid properties. In most cases, the pinch point locates at the bubble point for the evaporator and the dew point for the condenser. However, the pinch point shifts to the supercooled liquid state in the near critical conditions for the evaporator. Similarly, it shifts to the superheated vapor state with the condensing temperature approaching the critical temperature for the condenser. It even can shift to the working fluid entrance of the evaporator or the supercritical heater when the heat source fluid temperature is very high compared with the absorbing heat temperature. A wrong position for the pinch point may generate serious mistake. In brief, the pinch point should be founded by the iterative method in all conditions rather than taking for granted.
KeywordPinch Point Position Heat Exchanger Heat Transfer Phase Transition Supercritical Condition
DOI10.1007/s11630-016-0858-7
Indexed BySCI ; EI
Language英语
WOS IDWOS:000375514500008
WOS KeywordORGANIC RANKINE-CYCLE ; ZEOTROPIC REFRIGERANT MIXTURES ; EVAPORATION TEMPERATURE ; WORKING FLUIDS ; PERFORMANCE ; CONDENSERS
WOS Research AreaThermodynamics ; Engineering, Mechanical
Funding OrganizationProject 51306198 supported by National Natural Science Foundation of China is gratefully acknowledged. Thomas Tartiere who worked at Enertime in Paris reminded me of the importance of confirming pinch point position.
DepartmentLHD高效洁净燃烧(CPCR)
ClassificationQ4
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/71950
Collection高温气体动力学国家重点实验室
Corresponding AuthorPan, LS (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.; Shi, WX (reprint author), Beijing Univ Civil Engn & Architecture, Sch Environm & Energy Engn, Beijing 100044, Peoples R China.
Recommended Citation
GB/T 7714
Pan LS,Shi Weixiu,Pan, LS ,et al. Investigation on the Pinch Point Position in Heat Exchangers[J]. JOURNAL OF THERMAL SCIENCE,2016,25(3):258-265.
APA 潘利生,Shi Weixiu,Pan, LS ,&Shi, WX .(2016).Investigation on the Pinch Point Position in Heat Exchangers.JOURNAL OF THERMAL SCIENCE,25(3),258-265.
MLA 潘利生,et al."Investigation on the Pinch Point Position in Heat Exchangers".JOURNAL OF THERMAL SCIENCE 25.3(2016):258-265.
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