Drying is simply the process of moisture removal from a product. It can be performed by various methods. In these methods, thermal drying is most commonly used for drying agricultural products. Solar heated air could be used more effectively for drying of the various products under controlled conditions. But still today, dryers appear the most attractive option for use in rural locations. In industry solar drying system is rarely used. Though solar drying system having versatile appearance but still it has some disadvantage, which restrict its use in industry. The use of solar heat into industrial production processes (SHIP) is a challenge to both: the process engineer and the solar expert. The major share of energy which is needed in industrial production processes is below 250°C temperature level, which could be well supplied by solar thermal technologies. The lower temperature level (< 80°C) can already be provided today with commercially available solar thermal collectors. Author is claiming three different types of collectors for air dryer, which will provide heated air up to 95°C. Core of the paper is discussing the thermal analysis, so that it can be easy to get dimensions for the indirect type passive solar air dryer using simple non selective type absorber plate
