TY - JOUR
T1 - Applicability of entransy dissipation based thermal resistance for design optimization of two-phase heat exchangers
AU - Qian, Suxin
AU - Huang, Long
AU - Aute, Vikrant
AU - Hwang, Yunho
AU - Radermacher, Reinhard
N1 - Funding Information:
The authors gratefully acknowledge the support of this effort from the sponsors of the Alternative Cooling Technologies and Applications Consortium and the Center for Environmental Energy Engineering (CEEE) at the University of Maryland.
PY - 2013
Y1 - 2013
N2 - Recently, entransy dissipation theory showed its potential applicability in heat exchanger design optimization. Physical definition of two-phase entransy is presented in this study to extend its application to heating, ventilation, air conditioning and refrigeration systems. In this study, the evaluation of two-phase entransy is achieved by optimizing one tube-fin heat exchanger and one microchannel heat exchanger based on a validated heat exchanger modeling tool. Based on analytical approach and optimization results, the applicability and necessity of using entransy dissipation based thermal resistance are discussed. It has been proven that the entransy dissipation is an effective way to optimize heat exchangers with air flow rate as one design variable but has its limitation for optimizing heat exchangers with fixed flow rate.
AB - Recently, entransy dissipation theory showed its potential applicability in heat exchanger design optimization. Physical definition of two-phase entransy is presented in this study to extend its application to heating, ventilation, air conditioning and refrigeration systems. In this study, the evaluation of two-phase entransy is achieved by optimizing one tube-fin heat exchanger and one microchannel heat exchanger based on a validated heat exchanger modeling tool. Based on analytical approach and optimization results, the applicability and necessity of using entransy dissipation based thermal resistance are discussed. It has been proven that the entransy dissipation is an effective way to optimize heat exchangers with air flow rate as one design variable but has its limitation for optimizing heat exchangers with fixed flow rate.
KW - Entransy dissipation
KW - Entropy generation
KW - Heat exchanger optimization
KW - Microchannel heat exchanger
KW - Tube-fin heat exchanger
KW - Two-phase entransy
UR - http://www.scopus.com/inward/record.url?scp=84876125488&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2013.03.013
DO - 10.1016/j.applthermaleng.2013.03.013
M3 - Article
AN - SCOPUS:84876125488
SN - 1359-4311
VL - 55
SP - 140
EP - 148
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 1-2
ER -