Staff Members - Benha University
"Performance of a two-phase closed thermosyphon solar collector with a shell and tube heat exchanger", Applied Thermal Engineering, Vol. (24), No. (13), pp. 1959-1968.
Applied Thermal Engineering • 2004
Publication Information
Authors
S.A. Nada, H.H. El-Ghetany, and H.M.S. Hussein.
Keywords
Not Available
Journal
Applied Thermal Engineering
Publisher
Elsevier
Volume
24
Issue
13
Pages
1959-1968
publication.type
Local
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
In the present study, a two-phase closed thermosyphon flat-plate solar collector with a shell and tube
heat exchanger was investigated experimentally under the field conditions of Cairo, Egypt. The collector
was designed, constructed, and tested at transient conditions to study its performance for different cooling
water mass flow rates at different inlet cooling water temperatures. Also the effect of the number of the
thermosyphon tubes on the performance of the collector was investigated. Under different climate conditions,
the experimental results showed that the optimal mass flow rate is very close to the ASHRAE
standard mass flow rate for testing conventional flat-plate solar collectors. Also, the experimental results
indicated that the number of the thermosyphon tubes has a significant effect on the collector efficiency. The
performance of the present collector with optimum number of thermosyphon tubes was compared with the
performance of two-phase closed thermosyphon flat-plate solar collectors with tube in tube heat exchangers
of previous investigators and a better performance for the present collector was obtained at high inlet water
temperature.
heat exchanger was investigated experimentally under the field conditions of Cairo, Egypt. The collector
was designed, constructed, and tested at transient conditions to study its performance for different cooling
water mass flow rates at different inlet cooling water temperatures. Also the effect of the number of the
thermosyphon tubes on the performance of the collector was investigated. Under different climate conditions,
the experimental results showed that the optimal mass flow rate is very close to the ASHRAE
standard mass flow rate for testing conventional flat-plate solar collectors. Also, the experimental results
indicated that the number of the thermosyphon tubes has a significant effect on the collector efficiency. The
performance of the present collector with optimum number of thermosyphon tubes was compared with the
performance of two-phase closed thermosyphon flat-plate solar collectors with tube in tube heat exchangers
of previous investigators and a better performance for the present collector was obtained at high inlet water
temperature.