A Study of the Application of Vortex Generators to Enhance the Air-Side Performance of Heat Exchangers

Bull, B.R.; Jacobi, A.M.

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https://hdl.handle.net/2142/12168 Copy

Description

Title

A Study of the Application of Vortex Generators to Enhance the Air-Side Performance of Heat Exchangers

Author(s)

• Bull, B.R.
• Jacobi, A.M.

Issue Date

2003-05

Keyword(s)

• vortex generators
• air-side thermal performance

Abstract

The effect of longitudinal vortex generation on heat transfer is evaluated for a full scale plain fin-and-tube compact heat exchanger operating in both dry and wet conditions. The heat exchanger tested is comparable to an evaporator in a residential air-conditioning system. For this study the baseline performance of the heat exchanger is determined then the heat exchanger is modified with the addition of 2100 delta-wing vortex generators. The performance is determined by a volume goodness factor for the dry operating conditions and the overall enthalpy transfer coefficient for wet operating conditions. A 10% improvement in the volume goodness factor was recorded for the dry tests and the wet tests showed an overall reduction in the overall enthalpy transfer coefficient. A comparison was then made using j and f correlations for other enhanced surfaces. From these tests the j/f value for the vortex generator enhanced surface is shown to be comparable to the other enhanced surfaces.

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-214

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/12168

Sponsor(s)/Grant Number(s)

Air Conditioning and Refrigeration Project 121

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