Abstracts Oral Presentations - Solar Food Processing Network
Abstracts Oral Presentations - Solar Food Processing Network
Abstracts Oral Presentations - Solar Food Processing Network
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International <strong>Solar</strong> <strong>Food</strong> <strong>Processing</strong> Conference 2009<br />
SOLAR FOOD PROCESSING- AUTHORS EXPERIENCE WITH<br />
COOKING AND DRYING IN COSTA RICA<br />
Shyam S. Nandwani<br />
Laboratorio de Energía <strong>Solar</strong>, Departamento de Física,<br />
Universidad Nacional, Heredia, Costa Rica.<br />
E mail: snandwan@una.ac.cr, snandwan@yahoo.com<br />
<strong>Solar</strong> food processing is the integration of various processes with the basic materials to get the<br />
required product of given quality at the right time and using the minimum conventional fuel. Use of<br />
solar energy can definitely help in this aspect. Since 1977, author is doing research on different<br />
models of solar water heaters, stills, dryers and mainly cookers – hot box, hybrid sol- electric<br />
cookers, multiple uses solar cookers like cooker cum water heater/pasteurizer, cooker cum dryer<br />
etc. In addition to publish results in technical journals, disseminating the experience through<br />
lectures, TV, Radio, newspapers, workshops, seminars in Costa Rica and 35 other countries,<br />
author and his family is also using at home most of these devices when ever the climate permits.<br />
Author has recently designed one hybrid food processor (multipurpose device) and studied<br />
various technical and practical aspects. It has been used for cooking, heating/pasteurizing water<br />
(to inactivate microbes) and distillation of small quantity of water (to remove different minerals)<br />
and drying domestic products (fruits, vegetables and condiments / herbs).<br />
The variables like temperature, weight and water contents of various edible products for drying,<br />
instantaneous, and more important integrated solar radiation, and electrical energy used are<br />
measured. In this short presentation, part of the experience related to food processing – some<br />
cookers and dryers and their uses for cooking, drying, water heating and pasteurization will be<br />
informed.<br />
With these types of hybrid devices, the guarantee of your meal and drying of products at the right<br />
time and with the reduced consumption of conventional fuel can justify the extra investment.<br />
For more than four years of use, author has found hybrid system as a useful device, mainly from<br />
convenience, fuel saving, economic and also from ecological point of view. It can be used at any<br />
time and for different uses but with the reduced consumption of conventional fuel.<br />
Topics addressed: Local <strong>Solar</strong> <strong>Food</strong> <strong>Processing</strong> Technology, <strong>Solar</strong> <strong>Food</strong> <strong>Processing</strong> and back<br />
up systems<br />
Conventional <strong>Solar</strong> Cooker (1980) and Hybrid <strong>Solar</strong>-Electric <strong>Food</strong> processor (2003) designed,<br />
studied and used by author and family.<br />
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