02035nam a2200241   450000500170000000800410001703500150005810000250007324500970009826000520019530000160024749000270026350001520029050200580044252009790050065000260147970000370150570000430154270000520158571000320163781000590166985600650172820260818113107.0280998s1985    th      r    0000|0 eng d  a.b102663671 aUpadhyaya, Yuva Raja10aExperimental testing of solar dryer with rock bed heat storage working by natural convection  aBangkok :bAsian Institute of Technology,c1985  a104, A12 p.1 aThesis ;vno. ET-85-11  aA thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering, School of Environment, Resources and Development  aThesis (M.Eng.) - Asian Institute of Technology, 1985  aA solar dryer with a solar air heater, rock bed heat storage  was designed, fabricated and tested without load. The absorber plate of the solar air heater was corrugated iron sheet having absorber area of 9 m2 and 0.7315 m3 of ordinary rough gravel was used as heat storage medium.  The performance of the solar dryer for the selected clear,  clouded , rainy and the day after rainy days, has been presented.  The system was found capable to smoothen the temperature in the  chamber during day time and maintain the temperature 4-8°c  above the ambient during most of bright as well as dull days.  The solar dryer was also tested with a cowl to observe the  possible use of wind energy to force air through the system.  A simple mathematical model is developed to predict the  temperature profi1e through the system, working by natura1  convection. The mode l was found capable of predicting closely the temperatures through the system and the average chamber  temperature. 0aSolar energy research1 aExell, Robert H.B., eChairpeson1 aLucas, N.J.D., eExamination Committee1 aBhattacharya, Sribas C.,eExamination Committee2 aE.E.C., eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ET-85-11  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B19993