© 2020 JETIR July 2020, Volume 7, Issue 7 www.jetir.org (ISSN-2349-5162) JETIR2007190 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 1538 SOLAR DRYER WITH PHASE CHANGE MATERIAL – A WAY FORWARD R.M. Raval* Pursuing M tech. (machine design) Mechanical engineering department, Birla Vishwkarma Mahavidhyalaya, Vallabh Vidhyanagar – 388120, Anand, Gujarat, India. Prof. B.S. Patel Associate professor, Mechanical engineering department, Birla Vishwkarma Mahavidhyalaya, Vallabh Vidhyanagar – 388120, Anand, Gujarat, India. Dr. J.P. Hadiya Assistant professor, Mechanical engineering department, Birla Vishwkarma Mahavidhyalaya, Vallabh Vidhyanagar – 388120, Anand, Gujarat, India. Abstract: Solar dryer is a device which is used to dry agricultural product by using sun as a source of energy. Solar drying is superior method for drying agricultural product to maintain its quality for longer period of time. Solar energy is intermittent source of energy and hence dryer is available only for sun-shine hours. Further, the drying process in solar dryer consumes longer time compared to artificial drying process. This negative effect can be minimized using thermal energy storage along with solar dryer. Latent heat energy storage is the one attractive method compared to sensible thermal energy storage due to high energy storage density. In present work, recent investigation in the area of solar dryer and phase change material as solar dryer is reviewed. This review summarises the previous research works based on the types of dryer, types of TES and method of work. A mind map and charts etc. are developed for solar drying technologies and different TES. Types of dryers are first introduced and followed by the types of TES and use of PCM as a TES. The most of the recent work of different dryers and TES are discussed. In the subsequent part of paper, the methodology of using PCM as a TES in dryer are also reviewed as a way forward to increase performance by means of working hours to fulfil the requirement of preservation of food. Key Words: Solar dryer, TES, PCM. 1. INTRODUCTION A preservation of eatable products is challenging task for most developing countries due to poor processing techniques and shortage in storage facilities. To solve above problem different methods are available like: canning, freezing, drying etc. drying has become one of the main techniques used to preserve food products. [24] Drying or dehydration may be defined as a process of removing excessive moisture from a product to its safe or desired level of moisture content to store it for a longer time period without spoilage. [39] Drying with fossil fuel it causes of pollution and it is expensive also it requires more appliance. Sun is a source of light and heat energy for the residents of the planet earth. Solar energy is free of cost, readily available and pollution free. For drying, solar energy can be used as it available free of cost from sun.