Development and thermal performance analysis evaluation of a truncated pyramid solar cooker

الملخص EN

Study aimed to develop and evaluate the ther-mal performance of truncated pyramid solar cooker viz non-modified and modified.

Tests have been carried out in Department of Agricultural Engineer-ing, Faculty of Agriculture, Ain Shams University, Shubra El-Kheima, Egypt (Latitude 30o11’ N, Lon-gitude 31o24’ E).

The solar cookers were not load-ed, and loaded with 0.5, 1.0 and 2.0 liter of water.

The modified truncated pyramid was filled with different quantities of rice.

The thermal perfor-mance was evaluated by using first figure of Merit, second figure of Merit and energy efficiency.

tex-tural properties of rice and biscuits and cost analy-sis were measured.

The absorber plate tempera-ture of the modified was 51.

8 % higher than the absorber plate temperature of the non-modified cooker.

The calculated values of first figure of Merit was 0.102 and 0.08 oC.m2/W with modified and non-modified truncated pyramid cooker types, re-spectively.

The value of second figure of Merit was 0.239 and 0.523 for modified and non-modified truncated pyramid cooker, respectively.