Abstract Financial appraisal of two solar cookers (SK-23 and Scheffler dish) that may be used for institutional/community cooking is presented. For each solar cooker type, three different categories in terms of performance and cost as prevailing in the market have been considered. Annual numbers of solar cooked meals and consequently the values of several measures of financial performance are estimated for three locations in India with varying climatic conditions. As per the estimates obtained in this study a SK-23 solar cooker can cook from 39% to 60% of the meals during the year while, the corresponding range for Scheffler dish based solar cooker is from 59% to 85% at these locations. The discounted payback for SK-23 varies 6.2–9.2 years while the same for Scheffler dish varies from 9.5 to 11.7 years. The financial attractiveness of SK-23 is adversely affected by its poor performance in high wind, while the relatively higher capital cost of the Scheffler direct cooker apparently makes it financially unattractive. Thus, there is an urgent need to encourage research and development on solar cookers to reduce their cost and also to improve performance.

中文翻译：

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使用 SK-23 和 Scheffler 太阳能炊具在印度进行机构和社区太阳能烹饪：财务评估

摘要 介绍了可用于机构/社区烹饪的两种太阳能炊具（SK-23 和 Scheffler 盘）的财务评估。对于每种太阳能炊具类型，已经考虑了市场上流行的三种不同的性能和成本类别。估计印度三个气候条件不同的地点的年度太阳能烹饪餐数以及若干财务绩效指标的价值。根据本研究中获得的估计，SK-23 太阳能炊具可以在一年中烹饪 39% 至 60% 的膳食，而在这些位置，基于 Scheffler 碟式太阳能炊具的相应范围为 59% 至 85%。SK-23 的折扣投资回收期为 6.2-9.2 年，而 Scheffler 盘的折扣投资回收期为 9.5 至 11.7 年。SK-23 的财务吸引力受到其在大风中性能不佳的不利影响，而 Scheffler 直接炊具相对较高的资本成本显然使其在财务上没有吸引力。因此，迫切需要鼓励对太阳能炊具的研究和开发，以降低其成本并提高性能。