Recent Trends in PCM-Integrated Solar Dryers

Abstract

Solar dryers utilize solar thermal energy to dry products by removing the moisture in the product, and the extend the shelf life of the product. Phase change materials (PCMs) are widely used as a storage medium as they offer the benefits of isothermal characteristics and allow for use during non-sunshine hours. Various researchers have indicated the benefits of PCMs in increasing the flexibility of the operation, efficiency, and quality of the dried product. The present paper reviews the recent trends, factors, and performance of PCM-integrated solar dryers. Issues involved in drier operation and recommendations for energy-efficient and cost-effective drying are also discussed.

Keywords

• solar drier
• phase change material
• thermal storage devices