The Behavior of a Near-Azeotropic Refrigerant Mixture of R-321R-125 in an Enhanced Tube

Sweeney, K.A.; Chato, J.C.

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https://hdl.handle.net/2142/11157 Copy

Description

Title

The Behavior of a Near-Azeotropic Refrigerant Mixture of R-321R-125 in an Enhanced Tube

Author(s)

• Sweeney, K.A.
• Chato, J.C.

Issue Date

1996-04

Keyword(s)

• geometric variables
• R-22 alternatives
• refrigerant-side evaporation condensation studies

Abstract

Condensation of a near-azeotropic mixture of 45% R-32 and 55% R-125 has been studied in a microfinned tube. The local behavior of heat transfer coefficient and the pressure drop was found to be a function of both quality and mass flux. The overall enhancement for a microfinned tube was determined to be a result of increased heat transfer combined with an increase in surface area due to the addition of the fins. Another important t result of this study was that the flow regime was found to be an important factor in characterizing the enhancement of the microfinned tube. The effect of the fins on the pressure drop was not readily apparent, but needs further testing in order to be determined.

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 TR-94

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/11157

Sponsor(s)/Grant Number(s)

Air Conditioning and Refrigeration Center Project 37

Owning Collections