Two Roof Integrated Unglazed Solar Air Heater based dryers were installed and successfully demonstrated at the following industries:

• M/s Mashika Agritech Pvt. Ltd., Village Itola, Vadodara, for drying Oyster mushroom. The rated capacity of the dryer is about 75 kg / day.

• Gujarat State Forest Development Corporation (GSFDC), Village Por, Vadodara for drying Ayurvedic churnas with a capacity of 80 kg in 7-8 hours.

Two top opening type 80-litre solar refrigerators of SPRERI design have been installed at Maryward Health Centre at Puna, Bhojpur and Nazareth Seva Kendra at Gwalpara in Bihar for storing medicines and vaccines in a typical rural environment. The performance of the units is being closely monitored for their reliability and ruggedness. 
Four more units of top opening type 80-liter solar refrigerator are to be installed at following agricultural universities:

• Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu

• Maharana Pratap University Agriculture & Technology, Udaipur, Rajasthan

• CH Sarvan Kumar Krishi Vishwa Vidyalaya, Palampur, H. P.

• Assam Agricultural University, Jorhat, Assam.

High Rate Digestion of Agro-Industrial Waste

 Anaerobic systems to treat the waste from industrial and community kitchens for fuel gas production have been established in many leading industries of the country and in the community kitchens run by NGOs. Anaerobic filter based dairy effluents treatment systems have been installed in two dairies.

One biomass gasifier rated at 250,000 kcl / h (thermal) has been installed in a chicory roasting industry which was earlier burning wood to supply heat to its four chicory roasters. the industry was facing the problem of fly ash, smoke and uncomfortable temperature in roasting shed. The quality of roasting was unsatisfactory because the roasting temprature could not be controlled properly. After the installation of biomass gasifier which can use wodd, biomass briquettes or groundnut shell as feedstock, all these problems have been solved. the gasifier is installed outside the roasting shed. Producer gas burners do not emit smoke or fly ash. The roasting temperature is properly controlled. The product (roasted chicory cubes and powder) is fetching higher price in the market. The investment on the gasifier system is estimated to be recovered in less then 3 years. Another 100,000 kcl/h biomass gasifier installed in a temple to supply fuel (producer gas) to the temple's kitchen in which food for 500 to 1000 persons is cooked. Both systems are working well.