Modeling and Analysis of Gas Coolers

Fang, X.

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https://hdl.handle.net/2142/13199 Copy

Description

Title

Modeling and Analysis of Gas Coolers

Author(s)

Fang, X.

Issue Date

1999-06

Keyword(s)

• heat transfer
• heat exchangers
• supercritical pressures

Abstract

The transcritical cycle of carbon dioxide in air conditioning and heat pump systems needs the research on heat transfer and pressure loss of heat exchangers operating at supercritical pressures. This paper offers a comprehensive survey of single-phase in-tube heat transfer correlations, C02 supercritical heat transfer, friction factor correlations, the calculation of pressure loss in the supercritical conditions, and the heat transfer and friction factor correlations on the gas cooler air-side. The equations for calculating heat transfer and pressure loss at supercritical pressures both in the fully developed turbulent regime and in the transitional regime are obtained. Based on the mathematical model, a computer simulation program in EES for gas coolers is developed. The verification with experimental data is made thereafter. The prediction agrees with the experimental data very well. Some analyses on gas cooler thermal performance are carried out with the program.

Publisher

Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.

Series/Report Name or Number

Air Conditioning and Refrigeration Center CR-16

Type of Resource

text

Language

en

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http://hdl.handle.net/2142/13199

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