Abstract
To minimize the possibility of flash gas generation at the inlet of the expansion device in multi air-conditioners, an accumulator heat exchanger is usually adopted. In this study, the heat transfer rate and subcooling difference in an accumulator heat exchanger were measured under various operating and geometric conditions. The effect of the operating conditions on the performance of the accumulator heat exchanger was analyzed for R-22, R-134a, and R-410A. The performance of the accumulator heat exchanger was also analyzed by varying diverse geometric parameters: the inner volume and the ratio of the diameter to height of the accumulator, and the diameter, length, and bending diameter of the inner heat exchanger. In addition, the flow of the refrigerant-oil mixture inside the accumulator was visualized. Based on the measured data, a dimensionless correlation for predicting the subcooling difference across the accumulator heat exchanger was developed.
| Original language | English |
|---|---|
| Pages (from-to) | 1077-1084 |
| Number of pages | 8 |
| Journal | International Journal of Refrigeration |
| Volume | 34 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2011 Jun 1 |
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Keywords
- Air-conditioner
- Heat exchanger
- Heat transfer
- Refrigerant
- Sub-cooling
ASJC Scopus subject areas
- Mechanical Engineering
- Building and Construction
Cite this
Heat transfer characteristics of accumulator heat exchangers under various geometric and operating conditions. / Kang, Hoon; Cho, Ilyong; Park, Honghee; Kim, Yong Chan.
In: International Journal of Refrigeration, Vol. 34, No. 4, 01.06.2011, p. 1077-1084.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heat transfer characteristics of accumulator heat exchangers under various geometric and operating conditions
AU - Kang, Hoon
AU - Cho, Ilyong
AU - Park, Honghee
AU - Kim, Yong Chan
PY - 2011/6/1
Y1 - 2011/6/1
N2 - To minimize the possibility of flash gas generation at the inlet of the expansion device in multi air-conditioners, an accumulator heat exchanger is usually adopted. In this study, the heat transfer rate and subcooling difference in an accumulator heat exchanger were measured under various operating and geometric conditions. The effect of the operating conditions on the performance of the accumulator heat exchanger was analyzed for R-22, R-134a, and R-410A. The performance of the accumulator heat exchanger was also analyzed by varying diverse geometric parameters: the inner volume and the ratio of the diameter to height of the accumulator, and the diameter, length, and bending diameter of the inner heat exchanger. In addition, the flow of the refrigerant-oil mixture inside the accumulator was visualized. Based on the measured data, a dimensionless correlation for predicting the subcooling difference across the accumulator heat exchanger was developed.
AB - To minimize the possibility of flash gas generation at the inlet of the expansion device in multi air-conditioners, an accumulator heat exchanger is usually adopted. In this study, the heat transfer rate and subcooling difference in an accumulator heat exchanger were measured under various operating and geometric conditions. The effect of the operating conditions on the performance of the accumulator heat exchanger was analyzed for R-22, R-134a, and R-410A. The performance of the accumulator heat exchanger was also analyzed by varying diverse geometric parameters: the inner volume and the ratio of the diameter to height of the accumulator, and the diameter, length, and bending diameter of the inner heat exchanger. In addition, the flow of the refrigerant-oil mixture inside the accumulator was visualized. Based on the measured data, a dimensionless correlation for predicting the subcooling difference across the accumulator heat exchanger was developed.
KW - Air-conditioner
KW - Heat exchanger
KW - Heat transfer
KW - Refrigerant
KW - Sub-cooling
UR - http://www.scopus.com/inward/record.url?scp=79955916566&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955916566&partnerID=8YFLogxK
U2 - 10.1016/j.ijrefrig.2011.02.009
DO - 10.1016/j.ijrefrig.2011.02.009
M3 - Article
AN - SCOPUS:79955916566
VL - 34
SP - 1077
EP - 1084
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
SN - 0140-7007
IS - 4
ER -