An empirical correlation and rating charts for the performance of adiabatic capillary tubes with alternative refrigerants

Jongmin Choi; Yongchan Kim; Jin Taek Chung

doi:10.1016/S1359-4311(03)00238-2

An empirical correlation and rating charts for the performance of adiabatic capillary tubes with alternative refrigerants

Jongmin Choi
, Yongchan Kim^*
, Jin Taek Chung

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

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	https://doi.org/10.1016/S1359-4311(03)00238-2
Publication status	Published - 2004 Jan

Bibliographical note

Funding Information:
This work was jointly supported by the Carbon Dioxide Reduction & Sequestration Center, one of the 21st Century Frontier R&D Programs in the Ministry of Science and Technology of Korea, and the Korea Science & Engineering Foundation (Grant no. R01-2002-000-00481-0).

Keywords

Adiabatic capillary tubes
Alternative refrigerants
Empirical correlation
Mass flow rate
Rating charts

ASJC Scopus subject areas

Energy Engineering and Power Technology
Industrial and Manufacturing Engineering

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10.1016/S1359-4311(03)00238-2

Cite this

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title = "An empirical correlation and rating charts for the performance of adiabatic capillary tubes with alternative refrigerants",

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.",

keywords = "Adiabatic capillary tubes, Alternative refrigerants, Empirical correlation, Mass flow rate, Rating charts",

author = "Jongmin Choi and Yongchan Kim and Chung, \{Jin Taek\}",

note = "Funding Information: This work was jointly supported by the Carbon Dioxide Reduction \& Sequestration Center, one of the 21st Century Frontier R\&D Programs in the Ministry of Science and Technology of Korea, and the Korea Science \& Engineering Foundation (Grant no. R01-2002-000-00481-0).",

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AU - Chung, Jin Taek

N1 - Funding Information: This work was jointly supported by the Carbon Dioxide Reduction & Sequestration Center, one of the 21st Century Frontier R&D Programs in the Ministry of Science and Technology of Korea, and the Korea Science & Engineering Foundation (Grant no. R01-2002-000-00481-0).

PY - 2004/1

Y1 - 2004/1

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

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An empirical correlation and rating charts for the performance of adiabatic capillary tubes with alternative refrigerants

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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