Enhancement of heat transfer characteristics of wire mesh packed bed solar air heaters

A solar air heater with wire mesh packed bed was experimentally tested for hydro thermal analysis for a porosity range from 0.887 to 0.599. Reference data was taken for the flow rates of air ranging from 0.0159 kgs-1m-2 to 0.0347 kgs- 1m-2 for 8 different sets of wire screen matrices. To find the im...

Full description

Saved in:
Bibliographic Details
Main Authors: Prasad, Shashi Bhushan, Saini, J. S., Singh, K. M.
Format: Conference Proceeding
Language:English
Subjects:
Aerodynamics
Air heaters
Flow velocity
Fluid dynamics
Fluid flow
Packed beds
Parameters
Reynolds number
Thermal analysis
Thermodynamic efficiency
Wire cloth
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A solar air heater with wire mesh packed bed was experimentally tested for hydro thermal analysis for a porosity range from 0.887 to 0.599. Reference data was taken for the flow rates of air ranging from 0.0159 kgs-1m-2 to 0.0347 kgs- 1m-2 for 8 different sets of wire screen matrices. To find the improvement in thermal efficiency the comparison between Solar packed bed air heater & conventional solar air collector was done. It was observed that packed bed operating parameters and geometrical parameters was playing the main role in enhancement of thermal efficiency. A correlation, as a function of geometrical parameters and Reynolds number for Colburn Jh factor was obtained.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0050558