Solar Salt Dryer

Solar Salt Dryer

In Salt Refineries, drying is one of the high energy consuming step. For drying of salt, hot air generated by coal or fossil fuel fired boiler with a heat exchanger is used. The air is heated from ambient to the temperature of around 160 Deg C. This hot air is forced in to a fluidized bed dryer where salt around 4 – 5% moisture is dried to a moisture of 0.2%

Why Solar

In India there are many salt refining factories and all of them use either furnace oil/ diesel or coal/firewood for processing refined salt in the fluidised bed dryer. By using solar pre heated air at 60°C to 95° C (depending upon the solar radiation) the fuel consumption could be reduced. Introduction of solar heating system having a life span of more than fifteen years with proper maintenance will give an added economical sustainability especially during the fuel escalation periods. This will also provide a cleaner environment to the industries and the surroundings.

What is the PEN solution

A 113 m2 area solar air heating system was installed at Sahayamatha Salt Refinery. The hot air obtained is drawn by an electrical blower. The hot air is transmitted by insulated metal pipes to the fresh air inlet point of the heat exchanger to preheat the air.


Sahayamatha Salt Refinery, Tuticorin


Latest Achievement :-
A 720m2 CPC successfully installed at Hatsun Agro Pvt Ltd, Salem
A 550 kW grid type powered to Santosa Feed Plant factory near Palani owned by (HATSUN AGRO)
A 270m2 solar air heater partially funded by UNIDO as per for reduced coal consumption in a leather auto sprayer in Kanpur.
Roof mounted 10000 liters solar hot water system for leather tannery partially supported UNIDO in Kanpur has been successfully installed.
Graphite Processing.
TAMIN invites PEN for innovation in graphite processing.
Dr.C. Palaniappan has been requested by MED-BIS to frame solar dryer standards.
Solar Dryer
2 numbers of 150 kg solar dryer was sent to Nairobi, Kenya
Solar Heating
North East Tea Gardens are keen to adopt PEN’s energy saving methodology through solar heating.
Solar Air Heater
Solar air heater for tea at Golden Hill Tea Estate near Coonoor, Niligiris installed in 1992 still works ( 21 years) creating a new record in the Renewable energy sector.
Solar Power Project for TMB Bank
Tamilnad Mercantile Bank, basing upon the successful working of solar power project Pandaravilai Branch has entrusted 3 new branches namely Usilampatti, Odaipatti and MM Kovilur (Dindugal).