Accession Number : ADA091085
Title : Experimental Study of the Thermal Performance Parameters of a Liquid-heating Flat Plate Solar Collector.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Personal Author(s) : Woodrum,Charles Dana
Report Date : Sep 1980
Pagination or Media Count : 122
Abstract : From the results of this investigaiton the following conclusions are drawn: (1) The use of turbulators greatly enhanced the internal heat transfer coefficient, but unfortunately, made little difference in the overall performance; (2) The use of turbulators improved flow uniformity by increasing the pressure drop in the tubes; (3) The diameter of the headers should be larger to help ensure flow uniformity. This is especially true for low flowrate conditions such as those tested; (4) The bond conductance for the clamped fin was competitive with soldering since little gain in performance is realized after a value of 20 B/hr-ft-F is achieved; (5) The bond conductance of the woven fin configuration was unacceptable; and (6) Kalwall material was essentially opaque to far infrared radiation.
Descriptors : *FLAT PLATE MODELS , *SOLAR PANELS , *SOLAR COLLECTORS , TEMPERATURE , MODELS , PERFORMANCE(ENGINEERING) , LIQUIDS , THESES , TRANSMITTANCE , FLOW RATE , RADIATION ABSORPTION , ENERGY CONVERSION , SOLAR ENERGY , PRESSURE , CONVECTION(HEAT TRANSFER) , CONDUCTION(HEAT TRANSFER) , FINS , FLUID FLOW , TUBES , HEAT TRANSFER COEFFICIENTS , ENERGY ABSORBERS
Subject Categories : Non-electrical Energy Conversion
Electric Power Production and Distribution
Distribution Statement : APPROVED FOR PUBLIC RELEASE