Thermal performance evaluation of the funnel solar cooker of different funnel lengths implemented in Nagongera, Uganda.

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dc.contributor.author Chepkurui, Jonah
dc.contributor.author Biira, Saphina
dc.date.accessioned 2021-09-28T10:29:21Z
dc.date.available 2021-09-28T10:29:21Z
dc.date.issued 2020-01-08
dc.identifier.citation Chepkurui, J. & Biira, S. (2020). Thermal performance evaluation of the funnel solar cooker of different funnel lengths implemented in Nagongera, Uganda. Tanzania Journal of Science 46(1): 53-60, 2020. en_US
dc.identifier.issn 0856-1761
dc.identifier.issn 2507-7961
dc.identifier.uri https://doi.org/10.60682/2gpy-bj84
dc.description Article en_US
dc.description.abstract The aim of this study was to evaluate the thermal performance of a funnel solar cooker with different funnel lengths. Four funnel solar cookers of varying funnel lengths were constructed at Nagongera, in Tororo District, Uganda from cheap locally available materials. After construction, four blacked cooking pots of the same size filled with 1 kg of water were each placed in a cooker from 09:00 to 17:00 hrs. The temperature of the water in the pots was recorded after every 2 hours. The maximum temperatures of 93 °C, 84 °C, 68 °C and 58 °C for the funnel lengths of 50 cm, 42.6 cm, 32 cm and 23.3 cm, respectively were achieved at 13: 00 hrs for the average solar intensity of 684 W/m2 and ambient temperature of 27.9 °C. Similarly, as the funnel lengths increased from 23.3 cm to 50 cm, the thermal efficiency of the cooker increased from to 29.2% to 33.2% due to increased solar collecting surface. This indicates that the cooking temperature and thermal efficiency depended on the funnel lengths of the cooker and the time of the day. The results obtained were suitable and therefore the funnel solar cooker can be introduced to the community. Keywords: Funnel solar cooker; Thermal performance; Time of the day; Funnel length en_US
dc.description.sponsorship Busitema University, University of Dar es Salaam. en_US
dc.language.iso en en_US
dc.publisher Busitema University ; Tanzania Journal of Science. en_US
dc.subject Funnel solar cooker en_US
dc.subject Thermal performance en_US
dc.subject Time of the day en_US
dc.subject Funnel length en_US
dc.title Thermal performance evaluation of the funnel solar cooker of different funnel lengths implemented in Nagongera, Uganda. en_US
dc.type Article en_US


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