The key feature of the new cooker is that, it is designed to tilt towards the sun so that direct radiation is perpendicularly accessible to increase solar irradiance on the cooker face. Two foldable mirror reflectors are conveniently attached at both longer sides of the cooker at an angle of 115 degree with cooker face to boost up the energy collection. The new cooker allows the user to cook more meals as the cooker still works when the sun is somewhat low in the sky.                                  

During use, the cooker is to be placed facing sun keeping longer side vertically inclined position and this inclination can easily be changed up to 45 degree with respect to the ground by the adjustable stand attached at the backside of the cooker box.
 
       Four number cooking pots, painted dull black, are placed side by side at the longer side of the cooker on cooking trays. During changing of cooker inclination cooking pot maintains constant horizontal position.

The ingenious supporting system permits easy adjustment facility enabling the oven to collect direct radiation perpendicularly almost throughout the day which is especially advantageous during summer for solar cooking because in India during summer intensity of radiation is still high when sun is low in the sky. With conventional stand at backside of the oven it is impossible to follow the sun at right angle throughout the day.                                 
 

    In this oven, only one cooking pot is used mainly for rice cooking which is kept on an invented supporting system. 
                                    

       Size of the foldable mirror reflectors is equal to the top glass cover and these are hinged with oven face at four sides of the glass cover. The reflectors when opened held fixed at an inclination of 115 degree.
 
         Constructional features of this solar oven are as like as usual box type cooker. The oven box is made of GI sheet; aluminium sheet is used for the fabrication of inner box. The space maintained in between two boxes is filled with glass wool insulation. Upside of the oven is covered by two layers of plain glass. The pot is to be placed inside of oven by opening of glass cover. Interior of the oven and cooking pot are painted dull black Approximate Material and fabrication cost of the oven is Rs.2000.
 
 
TEST RESULTS (Reorientation is done at every 15 minutes interval during test):
 
Test date, time and location- 18^th April-2006, from 9-00am to 12-30pm, Jalpaiguri, W.B.
Ambient temperature- 24 degree Celsius.
Average intensity of solar radiation during test period- 0.53 Kw per sq.mt.
 
Peak temperature of the lid of empty cooking pot:
 
Inclined Box Cooker- 140 degree Celsius.
Suspended Box Oven- 172 degree Celsius.
 
Test date and time- 19^th April-2006, from 10-30am to 12-10pm
Average intensity – 0.54 Kw per sq.mt.
 
Time taken for 1kg.of water for attainment of 97 degree Celsius from 23 degree Celsius initial temperature:
 
Inclined box cooker- 100 minutes.
Suspended box oven- 80 minutes.
 
Test date and time- 21^st April-2006, from 10-30am to 12-20pm
Average intensity – 0.54 Kw per sq.mt.
 
Time taken for cooking1.5kg of rice (1.5kg weight after preparation) in suspended box oven- 110 minutes.