TY - GEN
T1 - A review of two-phase heat transfer and pressure drop correlations for natural refrigerants in small diameter tubes
AU - Li, Zhenning
AU - Ling, Jiazhen
AU - Aute, Vikrant
N1 - Publisher Copyright:
© 2018 International Institute of Refrigeration. All rights reserved.
PY - 2018
Y1 - 2018
N2 - The use of small diameter tubes in heat exchangers (HXs) has significant advantages, which include the increase in heat transfer coefficient, reduction in HX size, material, weight, and refrigerant charge. Due to these desirable characteristics and reduction in environmental impact, natural refrigerants become good candidates to substitute HFCs and HCFCs with the application of small diameter tubes. This paper comprehensively reviews the available two-phase heat transfer and pressure drop correlations for natural refrigerants and small diameter tubes (Dh = 5 mm). In addition, the effects of critical Reynolds number and two-phase flow regimes are discussed in the context of small diameter tube. Overall, two-phase heat transfer and pressure drop correlations for this application interest are not sufficient. This paper provides a guideline to choose correlations among existing models and identifies the research topics worthy of future study.
AB - The use of small diameter tubes in heat exchangers (HXs) has significant advantages, which include the increase in heat transfer coefficient, reduction in HX size, material, weight, and refrigerant charge. Due to these desirable characteristics and reduction in environmental impact, natural refrigerants become good candidates to substitute HFCs and HCFCs with the application of small diameter tubes. This paper comprehensively reviews the available two-phase heat transfer and pressure drop correlations for natural refrigerants and small diameter tubes (Dh = 5 mm). In addition, the effects of critical Reynolds number and two-phase flow regimes are discussed in the context of small diameter tube. Overall, two-phase heat transfer and pressure drop correlations for this application interest are not sufficient. This paper provides a guideline to choose correlations among existing models and identifies the research topics worthy of future study.
KW - Literature review
KW - Natural refrigerants
KW - Small diameter tubes
KW - Two phase correlations
UR - http://www.scopus.com/inward/record.url?scp=85049854211&partnerID=8YFLogxK
U2 - 10.18462/iir.gl.2018.1170
DO - 10.18462/iir.gl.2018.1170
M3 - Conference contribution
AN - SCOPUS:85049854211
T3 - Refrigeration Science and Technology
SP - 377
EP - 385
BT - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants
PB - International Institute of Refrigeration
T2 - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries
Y2 - 18 June 2018 through 20 June 2018
ER -