Performance studies of a large size nontracking solar cooker
A large size nontracking solar cooker has been designed, fabricated and tested. The cooker is based on the hot box principle. The cooker has been tested extensively and its performance has been compared with a solar oven, a hot box solar cooker and a solar cooker (tilted absorber). The stagnation temperatures are in increasing order for the hot box solar cooker, the solar cooker (tilted absorber), the large size nontracking solar cooker and the solar oven. The performance of this solar cooker is comparable with that of a solar oven. The former is not tracked towards sun while the latter is tracked every 30 min. The efficiency of a large size nontracking solar cooker is 24.9%. The energy saved by this new solar cooker has also been calculated and its payback period has been computed by considering interest, maintenance and inflation in fuel prices and maintenance cost. The payback periods are 1.10–3.63 years depending on which fuel it replaces. Relatively short payback periods show that the use of the cooker is economical, and it is easy to operate since no tracking is required.
Year of publication: |
1992
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Authors: | Nahar, N.M. |
Published in: |
Renewable Energy. - Elsevier, ISSN 0960-1481. - Vol. 2.1992, 4, p. 421-430
|
Publisher: |
Elsevier |
Saved in:
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