Development of long-term performance correlation for solar thermosyphon water heater

Journal Article · Mon May 01 04:00:00 EDT 1989 · J. Sol. Energy Eng.; (United States)

DOI:https://doi.org/10.1115/1.3268297· OSTI ID:5944969

Huang, B J

A semi-empirical long-term performance correlation for a solar thermosyphon water heater was derived. The derivation used the simulated results from a well-tested computer program developed previously. It was shown that the mean-day simulation results agree very well with the hour-by-hour simulation for the long-term performance of solar thermosyphon water heaters and hence were adopted for the derivation of the performance correlation. The correlations for the yearly- and monthly mean efficiency in terms of eleven parameters which characterize the performance of solar thermosyphon water heaters were derived and shown to accurately fit the simulation results. Several design rules for the thermosyphon water heater were deduced from the present study. The total incident global radiation is not present in the correlation function of the yearly efficiency. For the performance evaluation on a monthly basis, the monthly efficiency of thermosyphon water heater was shown to vary linearly with the monthly-mean daily total incident global radiation.

• Research Organization: 9900632
• OSTI ID: 5944969
• Journal Information: J. Sol. Energy Eng.; (United States), Journal Name: J. Sol. Energy Eng.; (United States) Vol. 111:2; ISSN JSEED
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140907* -- Solar Thermal Utilization-- Water Heating
APPLIANCES
CORRELATIONS
DESIGN
EFFICIENCY
ENERGY EFFICIENCY
EQUIPMENT
HEATERS
PERFORMANCE
RESOURCE DEVELOPMENT
SOLAR EQUIPMENT
SOLAR WATER HEATERS
THERMOSYPHONS
WATER HEATERS