Koldware Industries (Pvt) Ltd. offers the most amazing solar drying tunnels which can be installed at your premises and which can help you dry crops. Solar tunnel dryers utilize the energy of the sun and wind to dry agricultural products, preparing them for proper storage, processing and export. The crop is spread in an even layer on tables or drying racks inside the tunnel. The air below the semi-transparent collector is heated by the sun and spreads throughout the tunnel. The increased temperature decreases the relative humidity of the air, thereby allowing the air to dry the crop more efficiently. Solar tunnel dryers change the process of drying crops compared to the traditional open-air method. High economic benefits of the dryers result from improved efficiency and a decrease in required labor. Solar drying is a continuous process where moisture content, air and product temperature change simultaneously along with the two basic inputs to the systems: the solar insolation and inlet air at ambient temperature. The drying rate is affected by ambient climatic.
Conditions This includes temperatures, relative humidity, sunshine hours, solar insolations, wind velocity, frequency and duration of rain showers during the drying period etc. To have a valuable quality product and to minimize the wastage, artificial drying of the product should be employed. The earlier dryers used conventional fuels like electricity, coal and fossil fuel .Drying of agricultural product is an energy intensive operation. High cost of fossil fuel and gradual depletion of its reserve has incited the use of solar energy as an alternative energy source for dryers.
|MAX. PERMISSINLE TEMPERATURE FOR DRYING AGRICULTURAL PRODUCE AND THEIR INTIAL FINAL MOISTURE CONTENTS|
|Produce||Moisture Content (% W.B)||Max.Permissible Temperature|