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A solar cooker, or solar oven, is a device which uses the energy of sunlight to heat food or drink to cook it or sterilize it.
The three most common types of solar cookers are box cookers, curved concentrators (parabolics) and panel cookers.
Box cookers
Box cookers cook food at moderate to high temperatures and often accommodate multiple pots. Worldwide, they are the most…

Solar Dryer for Drying of fruits and vegetables
The solar dryer is suitable for tomatoes, bananas, mangos, apples, plums, tea, fish etc
The technology and capital required for solar dryers is basic and the entire operation can be completed with ease

Low cost solar 2.5 Wp Photovoltaic based portable lamp with six LED lamps. It uses sunshine as a fuel to charge three 1.2 Volt rechargeable batteries. It is used in remote areas where there are no other affordable sources of electricity. After a few days of training even lay people can manufacture these lamps with required components in remote areas.

Solar Tunnel Dryer is a device for the drying of fruits, vegetables, ginger, tea, coffee, fish meat and herbs by the use of Solar energy. This dryer basically consists of axial fans, series of collectors where the heat is collected and dryers in which the drying materials are spread out in thin layer. Each collectors and dryers is modular in design which can be fabricated at required length, can…

A solar water heating system is a simple and reliable energy source for your home. Generally, solar collectors are mounted on a south facing sloped or flat roof. Fluid (water or glycol) flows through the panel and is heated by the sun. It then runs to a solar storage tank connected to the existing water heater. The water heater only turns on if the solar-heated water still needs a temperature…

Biodiesel is a non-petroleum based fuel that consists of methy esters derived from either the transesterification of triglycerides (TGs) or the esterification of FFAs from animal and vegetable oils with methanol. Biodiesel is meant to be used in standard diesel engines and is thus distinct from the vegetable and waste oils used to fuel converted diesel engines. Biodiesel can be used alone…

Central Electronics Limited (CEL) has developed a technology for the manufacturing of light weight solar foldable modules. This new architecture will be helpful for the easy transport of module as well as better deployment of the crystalline solar cell efficiency/power. The foldable modules can be utilized for the charging of the mobiles / batteries as well as suitable for the other different…

A Solar lantern is a simple application of solar photovoltaic technology, which has found good acceptance in rural regions where the power supply is irregular and scarce. Even in the urban areas people prefer a solar lantern as an alternative during power cuts because of its simple mechanism. Solar lantern provide higher quality light than the candles or kerosene lamps. The possible applications…

A photovoltaic solar module is a set of electrically connected solar cells. Quite often, single solar cells do not produce enough electrical power. Therefore many PV cells are combined in so called photovoltaic solar modules and wheatherproof mounted between glass plates. This assembly can be done either automatically or manually. The manufacturing process consists of several steps such as…

A charge controller limits the rate at which electric current is added to or drawn from electric batteries. It prevents overcharging and may prevent against overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk. It may also prevent completely draining ("deep discharging") a battery, to protect battery life. CEL has already developed the high…