- Author
-
Thomas, W. C.
- Title
- Effects of Test Fluid Composition and Flow Rates on the Thermal Efficiency of Solar Collectors. Final Report.
- Coporate
- Virginia Polytechnic Institute and State University, Blacksburg
- Sponsor
- National Bureau of Standards, Washington, DC
Department of Energy, Washington, DC
- Report
-
NBS GCR 80-254; VPI/SU-80-03
August 1980
- Distribution
- Available from National Technical Information Service
- Keywords
-
thermal efficiency; heat transfer; antifreezes; mineral oils; flow rate
|
solar collectors
- Identifiers
- solar collectors; flat plate collectors
- Abstract
- Experimental and analytical investigations were carried out to determine the significance of the heat transfer fluid and mass flow rate on the thermal performance of two liquid-heating flat-plate solar collectors. The collector thermal performance was lowered significantly for high concentrations of glycol and mineral-base oil. Heat losses measured with oil were less than the losses measured from the ASHRAE prescribed procedures.