A truncated pyramid non-tracking type multipurpose domestic solar cooker/hot water system
Tilak Chavda and
Applied Energy, 2010, vol. 87, issue 2, 471-477
For impressive dissemination of the solar thermal gazettes, it is imperative to keep on changing the device design features so as to cater to the different demands of diverse section of the society. Domestic solar hot water systems are not suitable for cooking and the capacity of domestic solar box type cookers for water heating is very low. We report truncated pyramid geometry based multipurpose solar device which could be used for domestic cooking as well as water heating. The device is designed, fabricated and tested. Cooking tests approved by Bureau of Indian Standards were performed in different seasons and the device was found to meet the requirement stipulated on two figures of merit. The performance of the design was also evaluated as a hot water system and the maximum efficiency was found to be 54%. The day-time and average night-time heat-loss coefficients were found to be 5.7Â W/Â°CÂ m2 and, 3.74Â W/CÂ m2, respectively, which are comparable to those of flat-plate collector based solar hot water systems. A simple economic analysis illustrate that this kind of multi-purpose design could be financially viable and physically useful.
Keywords: Solar; cooker; Truncated; pyramid; solar; concentrator; Thermal; performance; Solar; hot; water; system; cum; cooker; Multi-purpose; solar; device (search for similar items in EconPapers)
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