Effect of airflow nonuniformity on evaporator performance

A 1.5 ton window air conditioner was extensively instrumented and tested over a wide range of wet- and dry-coil operating conditions. Published air- and refrigerant-side heat transfer correlations were found to characterize wavy-fin evaporator performance quite well under dry conditions but less so...

Full description

Saved in:
Bibliographic Details
Main Authors: Kirby, E.S., Bullard, C.W., Dunn, W.E.
Format: Book
Language:English
Subjects:
AIR CONDITIONERS
AIR FLOW
ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
EVAPORATORS
EXPERIMENTAL DATA
HEAT TRANSFER
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A 1.5 ton window air conditioner was extensively instrumented and tested over a wide range of wet- and dry-coil operating conditions. Published air- and refrigerant-side heat transfer correlations were found to characterize wavy-fin evaporator performance quite well under dry conditions but less so when wet. Evaporator face velocity nonuniformities were measured and found to range over a factor of three. A second set of tests was conducted in a wind tunnel, using an identical evaporator exposed to uniform airflow. Results showed, over a wide range of operating conditions having superheated exit conditions, that sensible and latent heat transfer and air-side pressure drop penalties resulting from these nonuniformities were quite small.
ISSN:0001-2505