Refrigerant Charge Imbalance in a Mobile Reversible Air Conditioning-Heat Pump System

Research output: Contribution to journalConference article

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 languageEnglish (US)
JournalSAE Technical Papers
Volume2017-March
Issue numberMarch
DOIs
StatePublished - Mar 28 2017
EventSAE World Congress Experience, WCX 2017 - Detroit, United States
Duration: Apr 4 2017Apr 6 2017

Fingerprint

Heat pump systems
Refrigerants
Air conditioning
Cooling
Heating
Heat exchangers
Energy efficiency

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 journalConference article

@article{5a443893c3a64677b575e548ee1587dd,
title = "Refrigerant Charge Imbalance in a Mobile Reversible Air Conditioning-Heat Pump System",
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.",
author = "Lili Feng and Hrnjak, {Predrag Stojan}",
year = "2017",
month = "3",
day = "28",
doi = "10.4271/2017-01-0177",
language = "English (US)",
volume = "2017-March",
journal = "SAE Technical Papers",
issn = "0148-7191",
publisher = "SAE International",
number = "March",

}

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 -