Solar Air Dryer


The Solar Powered Air Dryer is new and innovative technology basing on blending Solar Thermal and Solar Photovoltaic Technologies.

How does it work?

The Solar radiation passes through the transparent glass window, located on the top of the cabinet, which is oriented to south with a tilt angle equal to the latitude to collect maximum radiation. The cabinet is made of anti-corrosive material and of modular nature to meet the varying sizes and loading capacities of products, ranging from 8 to 50 kgs and above.

The ambient air enters from the bottom of the cabinet and gets heated up with Solar radiation incident from the top window. The heat energy is trapped in the cabinet and heats up the air. As a result the wavelength of solar radiation shifts to infrared region, causing green house effect.

The hot air passes through the trays, carries the moisture from the product to the space below the glass. Then, Solar Photovoltaic fans exhausts this air containing moisture. The forced air circulation r in the cabinet is achieved through this solar fan. The electrical heaters are provided as standby to meet any exigencies on non-sunny days.

The Solar dryer can be used to dry a variety of agricultural products and food items such as : Fruits (Grapes, bananas etc.) / Vegetables (Potatoes, Onions etc.) / Grains (Paddy, Wheat, Maize etc.) / Spices (Ginger, Garlic, Chills etc.) / Cash crops (Coffee, Herbs, Flowers etc.) / Fish and Meat / Mushrooms.

We design commission and install industrial Solar drying systems as per the customer needs and requirements. System details can be sent to the Customer upon receipt of specific requirements from the customer


  • Cabinet Temp. 40-65C, on clear Sunny days.
  • Maintains 15-30C, over ambient.
  • Solar PV fan for Air Circulation.
  • Trolly system for loading and unloading.
  • Thermostat control at set temperature in mixed solar and electrical mode.
  • Electrical Backup for Non-Sunny days.
  • Capacities : 2kgs, 8kgs, 5kgs, & above.
  • 10 year warranty.

Models of Solar Dryers :

S. NO. Model Loading Capacity Approx. (Wt.) Solar Window Drying Area Solar Photo Voltaic Panel Electrical Backup 220 V. A. C
1. SDM-2 2kgs. 0.14 sq.m. 0.1 sq.m. 2W 150W
2. SDM-8 8kgs. 0.37 sq.m. 0.5 sq.m. 3.5W 600W
3. SDM-50 50kgs. 2.23 sq.m. 3.0 sq.m. 21W 3.6 KW
4. SDM-100 100kgs. 4.46 sq.m. 6.0 sq.m. 42W 7.2 KW
5. SDM-500 500kgs. (0.5MT) 23.22 sq.m. 30 sq.m. 210W 36 KW
6. SDM-1000 1000kgs. (1MT) 46.45 sq.m. 60 sq.m. 420W 72 KW

Dryer Application :

Vegetables Mushroom, Curry Leaves, Tomato, Gum, Onion, Potato, Chilies, Coconut, Mint, Spices, Ginger etc.
Fruits Grapes, Papaya, Apple, Mango, Guava etc.
Flowers Honey, Jasmine, Rose etc.
Sea Foods Fish, Prawns etc.
Medicinal Plants Rose Mary, Tulasi, Amla etc.
Chemicals Silicon Carbide, Micro Crystalline