Food preservation is a process of moisture removal from
agricultural produce up to a safe limit and this process is known as crop drying. Crop drying is a process of dehydration using the heat. That heat can be generated by burning of fossil fuels, through the electricity and by the solar radiation (Singh and Kumar, 2012b; Fudholi et al., 2015; Prakash et al., 2013). But consumption of fossil fuel again a problem like burden of foreign exchange on developing country and other problem is environmental concern (GHG emission). Other sources of heat energy can be electricity. But after a lot of practices and efforts, lot of villages of developing countries are still waiting for the continuous and sufficient supply of electricity. So avoid such problems, renewable energy can be best solution. Renewable energy is not available in the form of heat but sun can generate enormous amount of heat energy through various available technologies like solar collectors, solar concentrators and solar dryers which had been developed in past. Solar energy is a rising and smart option for the rural occupiers and farmers (Ekechukwu and Norton, 1999; Singh et al., 2006; Prakash and Kumar, 2014c,d).