An Experimental Investigation of Natural Convection Heat Transfer in a Refrigerator During Closed Door Conditions

Williams, T.L.

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https://hdl.handle.net/2142/9756 Copy

Description

Title

An Experimental Investigation of Natural Convection Heat Transfer in a Refrigerator During Closed Door Conditions

Author(s)

Williams, T.L.

Contributor(s)

• Clausing, A.M.
• Newell, T.A.

Issue Date

1994-05

Keyword(s)

• insulation systems
• refrigerator-freezers

Abstract

This investigation determines the convective heat transfer coefficient from the vertical, warm walls of a refrigerator which has cold contents. The influence of enclosure height and contents configuration on the magnitude of the coefficient is established. The heat transfer data are correlated with three different models. The first is a simple power law relating the Nusselt number to the Rayleigh number. The other correlations include the effect of the contents configuration by adding a geometric parameter which is either an area or a volume ratio of the contents to the enclosure. All three correlations yield a coefficient of determination greater than 0.93. The Rayleigh number based on the enclosure height and the temperature difference between the enclosure and the contents ranges from 4.8 x 106 to 6.1 x 108. The surface area ratio varies from 0.47 to 0.91, while the volume ratio varies from 0.11 to 0.32.

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-54

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/9756

Sponsor(s)/Grant Number(s)

Air Conditioning and Refrigeration Center Project 19

Owning Collections