Abstract
This paper presents the study of refrigerant charge imbalance between A/C (cooling) mode and HP (heating) mode of a mobile reversible system. Sensitivities of cooling and heating capacity and energy efficiency with respect to refrigerant charge were investigated. Optimum refrigerant charge level for A/C mode was found to be larger than that for HP mode, primarily due to larger condenser size in A/C mode. Refrigerant charge retention in components at both modes were measured in the lab by quick close valve method. Modeling of charge retention in heat exchangers was compared to experimental measurements. Effect of charge imbalance on oil circulation was also discussed.
| Original language | English (US) |
|---|---|
| Journal | SAE Technical Papers |
| Volume | 2017-March |
| Issue number | March |
| DOIs | |
| State | Published - Mar 28 2017 |
| Event | SAE World Congress Experience, WCX 2017 - Detroit, United States Duration: Apr 4 2017 → Apr 6 2017 |
Fingerprint
ASJC Scopus subject areas
- Automotive Engineering
- Safety, Risk, Reliability and Quality
- Pollution
- Industrial and Manufacturing Engineering
Cite this
Refrigerant Charge Imbalance in a Mobile Reversible Air Conditioning-Heat Pump System. / Feng, Lili; Hrnjak, Predrag Stojan.
In: SAE Technical Papers, Vol. 2017-March, No. March, 28.03.2017.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Refrigerant Charge Imbalance in a Mobile Reversible Air Conditioning-Heat Pump System
AU - Feng, Lili
AU - Hrnjak, Predrag Stojan
PY - 2017/3/28
Y1 - 2017/3/28
N2 - This paper presents the study of refrigerant charge imbalance between A/C (cooling) mode and HP (heating) mode of a mobile reversible system. Sensitivities of cooling and heating capacity and energy efficiency with respect to refrigerant charge were investigated. Optimum refrigerant charge level for A/C mode was found to be larger than that for HP mode, primarily due to larger condenser size in A/C mode. Refrigerant charge retention in components at both modes were measured in the lab by quick close valve method. Modeling of charge retention in heat exchangers was compared to experimental measurements. Effect of charge imbalance on oil circulation was also discussed.
AB - This paper presents the study of refrigerant charge imbalance between A/C (cooling) mode and HP (heating) mode of a mobile reversible system. Sensitivities of cooling and heating capacity and energy efficiency with respect to refrigerant charge were investigated. Optimum refrigerant charge level for A/C mode was found to be larger than that for HP mode, primarily due to larger condenser size in A/C mode. Refrigerant charge retention in components at both modes were measured in the lab by quick close valve method. Modeling of charge retention in heat exchangers was compared to experimental measurements. Effect of charge imbalance on oil circulation was also discussed.
UR - http://www.scopus.com/inward/record.url?scp=85018374784&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85018374784&partnerID=8YFLogxK
U2 - 10.4271/2017-01-0177
DO - 10.4271/2017-01-0177
M3 - Conference article
AN - SCOPUS:85018374784
VL - 2017-March
JO - SAE Technical Papers
JF - SAE Technical Papers
SN - 0148-7191
IS - March
ER -