Govt. of Jharkhand


PROGRAMME>>>Solar Thermal Technologies

Solar Water Heater

The principal objective of the Solar Thermal Energy Programme is market development and  commercialization of solar thermal systems such as solar water heaters, solar cookers, solar air heaters/dryers etc. Such a transition would ensure that energy for meeting heat requirements  for different applications in the domestic, commercial and industrial sectors of the country will  come from Green Power in years to come.


Solar Cooker

A solar cooker is a device, which cooks food with the help of solar energy and can save the conventional fuels to a significant amount. It, however, supplements the cooking fuel and cannot replace it in total. Solar energy is abundantly available in India. On clear sunny days, it is possible to cook noon meal for 4 to 5 people in a normal Box solar cooker and if one desires either full or part evening meal could also be cooked in it.


Concentrating solar cookers

It is a concentrating type parabolic dish solar cooker useful for homes & small establishments. A typical dish  solar cooker has an aperture diameter of 1.4 meter and focal length 0.28 meter. 


The reflecting material used for fabrication of this cooker is anodized aluminum sheet which  has a reflectivity of 

over 80%. The tracking of the cooker is manual and thus has to be adjusted in 15 to 20 minutes during cooking time. It has a delivering power of about 0.6 KW which can boil 2 to 3 liters of water in half an hour. The temperature achieved at the bottom of the vessel could be around 350 to 400o C which is sufficient for roasting,  frying and boiling. The cooker having a thermal efficiency of around 50% can meet the needs of around 15 people and can be used from one hour after sunrise to one hour before sunset on clear days. It can be easily dismantled and  assembled  by  anybody  and  thus  may  be nicely packed and transported anywhere in  the  country. The cooker is user friendly as the place of vessel to be kept for cooking is at a level which is convenient for the people to use.


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