TY - GEN
T1 - Rational approach to refrigerant charge reduction
AU - Hrnjak, Pega
N1 - Publisher Copyright:
© 2019 International Institute of Refrigeration. All rights reserved.
PY - 2019
Y1 - 2019
N2 - This paper presents an overview of the reasons for charge reduction in air conditioning and refrigeration systems and discusses strategies for charge reduction: in compressors (oil), vessels, pipes, and heat exchangers. The focus is on heat exchangers, microchannel in particular. In addition to a trivial reduction of internal volume as a strategy for charge reduction, the effect of mass flux on void fraction and needed manipulation of circuiting is presented. A framework and example of comparison between refrigerants based on their potential for low condenser charge is provided.
AB - This paper presents an overview of the reasons for charge reduction in air conditioning and refrigeration systems and discusses strategies for charge reduction: in compressors (oil), vessels, pipes, and heat exchangers. The focus is on heat exchangers, microchannel in particular. In addition to a trivial reduction of internal volume as a strategy for charge reduction, the effect of mass flux on void fraction and needed manipulation of circuiting is presented. A framework and example of comparison between refrigerants based on their potential for low condenser charge is provided.
KW - Efficient operation
KW - Refrigerant
KW - Safe
UR - http://www.scopus.com/inward/record.url?scp=85082699595&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85082699595&partnerID=8YFLogxK
U2 - 10.18462/iir.icr.2019.1832
DO - 10.18462/iir.icr.2019.1832
M3 - Conference contribution
AN - SCOPUS:85082699595
T3 - Refrigeration Science and Technology
SP - 29
EP - 40
BT - ICR 2019 - 25th IIR International Congress of Refrigeration
A2 - Minea, Vasile
PB - International Institute of Refrigeration
T2 - 25th IIR International Congress of Refrigeration, ICR 2019
Y2 - 24 August 2019 through 30 August 2019
ER -