The performance of an integral greenhouse solar air-heater

 

Show simple item record

dc.contributor.advisor Gryzagoridis, Jasson en_ZA
dc.contributor.author Bam, Peter Jonathan en_ZA
dc.date.accessioned 2014-09-22T07:54:38Z
dc.date.available 2014-09-22T07:54:38Z
dc.date.issued 1984 en_ZA
dc.identifier.citation Bam, P. 1984. The performance of an integral greenhouse solar air-heater. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/7600
dc.description Bibliography: leaves 76-83. en_ZA
dc.description.abstract The Baird-type solar collector is a solar air-heater, utilising black shade-cloth as the absorber, that is incorporated as part of the roof of a greenhouse. It is intended to be used, in conjunction with a heat storage device, to provide greenhouse heating (and cooling), and so to assist in maintaining an optimum greenhouse plant-cultivation environment. An analysis of a Baird-type integral greenhouse solar collector is presented in this thesis. This has involved designing and building a solar simulator, which was used to test the performance of a model of a greenhouse-integral solar collector. The experimental results thus derived were compared with results generated using a theoretical heat-transfer model of the solar collector and show that, on average, the theoretical model was capable of predicting the model solar collector heat-gain to within six percent of the measured values. Predictions of performance were made for various input conditions, such as high and low values of inlet-air temperature, different ground temperatures, different mass-flowrates and radiation intensities. Although subject to the input conditions, the results indicated an efficiency of solar energy collection of about 35 percent for the model greenhouse solar collector. The theoretical model was used (with appropriate modifications), to predict the performance of a "life-size" Baird-type greenhouse integral solar collector. Predictions were made for average conditions in the Cape Peninsula for the months of January and June. Assuming zero windspeed, a collector efficiency of approximately 42 percent is anticipated for most of the January day and approximately 33 percent for most of the June day. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Mechanical Engineering en_ZA
dc.title The performance of an integral greenhouse solar air-heater en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Mechanical Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Bam, P. J. (1984). <i>The performance of an integral greenhouse solar air-heater</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/7600 en_ZA
dc.identifier.chicagocitation Bam, Peter Jonathan. <i>"The performance of an integral greenhouse solar air-heater."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 1984. http://hdl.handle.net/11427/7600 en_ZA
dc.identifier.vancouvercitation Bam PJ. The performance of an integral greenhouse solar air-heater. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 1984 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/7600 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Bam, Peter Jonathan AB - The Baird-type solar collector is a solar air-heater, utilising black shade-cloth as the absorber, that is incorporated as part of the roof of a greenhouse. It is intended to be used, in conjunction with a heat storage device, to provide greenhouse heating (and cooling), and so to assist in maintaining an optimum greenhouse plant-cultivation environment. An analysis of a Baird-type integral greenhouse solar collector is presented in this thesis. This has involved designing and building a solar simulator, which was used to test the performance of a model of a greenhouse-integral solar collector. The experimental results thus derived were compared with results generated using a theoretical heat-transfer model of the solar collector and show that, on average, the theoretical model was capable of predicting the model solar collector heat-gain to within six percent of the measured values. Predictions of performance were made for various input conditions, such as high and low values of inlet-air temperature, different ground temperatures, different mass-flowrates and radiation intensities. Although subject to the input conditions, the results indicated an efficiency of solar energy collection of about 35 percent for the model greenhouse solar collector. The theoretical model was used (with appropriate modifications), to predict the performance of a "life-size" Baird-type greenhouse integral solar collector. Predictions were made for average conditions in the Cape Peninsula for the months of January and June. Assuming zero windspeed, a collector efficiency of approximately 42 percent is anticipated for most of the January day and approximately 33 percent for most of the June day. DA - 1984 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1984 T1 - The performance of an integral greenhouse solar air-heater TI - The performance of an integral greenhouse solar air-heater UR - http://hdl.handle.net/11427/7600 ER - en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record