Abstract
With the phaseout of conventional refrigerants, refrigeration and air conditioning systems must be redesigned to improve system performance and reliability with alternative refrigerants. In this study, a generalized correlation for the prediction of refrigerant flow rate through adiabatic capillary tubes is developed by generating dimensionless parameters for operating conditions, capillary tube geometry, and refrigerant properties using the Buckingham Pi theorem. The database for the present correlation includes extensive experimental data for R12, R22, R134a, R152a, R407C, and R410A obtained from the open literature. The present correlation, which has a relatively simpler form to employ, yields a mean deviation of 5.4% and a standard deviation of 6.5% from the database. In addition, rating charts for predicting refrigerant flow rate through adiabatic capillary tubes are generated for R12, R22, R134a, R152a, R407C, and R410A.
| Original language | English |
|---|---|
| Pages (from-to) | 29-41 |
| Number of pages | 13 |
| Journal | Applied Thermal Engineering |
| Volume | 24 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2004 Jan 1 |
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Keywords
- Adiabatic capillary tubes
- Alternative refrigerants
- Empirical correlation
- Mass flow rate
- Rating charts
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Mechanical Engineering
Cite this
An empirical correlation and rating charts for the performance of adiabatic capillary tubes with alternative refrigerants. / Choi, Jongmin; Kim, Yong Chan; Chung, Jin Taek.
In: Applied Thermal Engineering, Vol. 24, No. 1, 01.01.2004, p. 29-41.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An empirical correlation and rating charts for the performance of adiabatic capillary tubes with alternative refrigerants
AU - Choi, Jongmin
AU - Kim, Yong Chan
AU - Chung, Jin Taek
PY - 2004/1/1
Y1 - 2004/1/1
N2 - With the phaseout of conventional refrigerants, refrigeration and air conditioning systems must be redesigned to improve system performance and reliability with alternative refrigerants. In this study, a generalized correlation for the prediction of refrigerant flow rate through adiabatic capillary tubes is developed by generating dimensionless parameters for operating conditions, capillary tube geometry, and refrigerant properties using the Buckingham Pi theorem. The database for the present correlation includes extensive experimental data for R12, R22, R134a, R152a, R407C, and R410A obtained from the open literature. The present correlation, which has a relatively simpler form to employ, yields a mean deviation of 5.4% and a standard deviation of 6.5% from the database. In addition, rating charts for predicting refrigerant flow rate through adiabatic capillary tubes are generated for R12, R22, R134a, R152a, R407C, and R410A.
AB - With the phaseout of conventional refrigerants, refrigeration and air conditioning systems must be redesigned to improve system performance and reliability with alternative refrigerants. In this study, a generalized correlation for the prediction of refrigerant flow rate through adiabatic capillary tubes is developed by generating dimensionless parameters for operating conditions, capillary tube geometry, and refrigerant properties using the Buckingham Pi theorem. The database for the present correlation includes extensive experimental data for R12, R22, R134a, R152a, R407C, and R410A obtained from the open literature. The present correlation, which has a relatively simpler form to employ, yields a mean deviation of 5.4% and a standard deviation of 6.5% from the database. In addition, rating charts for predicting refrigerant flow rate through adiabatic capillary tubes are generated for R12, R22, R134a, R152a, R407C, and R410A.
KW - Adiabatic capillary tubes
KW - Alternative refrigerants
KW - Empirical correlation
KW - Mass flow rate
KW - Rating charts
UR - http://www.scopus.com/inward/record.url?scp=0142094635&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0142094635&partnerID=8YFLogxK
U2 - 10.1016/S1359-4311(03)00238-2
DO - 10.1016/S1359-4311(03)00238-2
M3 - Article
VL - 24
SP - 29
EP - 41
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
SN - 1359-4311
IS - 1
ER -