International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 08 Issue: 03 | Mar 2021 www.irjet.net p-ISSN: 2395-0072 © 2021, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 1484 Cost Effective and Low Energy Cold Storage Mahir Beldar 1 , Mahipalsinh Vaghela 2 , Harshal Pathak 3 , Dhruv Patel 4 , Bansi D. Raja 5 1-4 Students, Dept. of Mechanical Engineering, Indus Institute of Technology and Engineering, Rancharda, via. Thaltej, Ahmedabad, Gujarat, India 5 DR. Bansi d Raja, Dept. of Mechanical Engineering, Indus Institute of Technology and Engineering, Rancharda, via. Thaltej, Ahmedabad, Gujarat, India ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract - - in this paper a design of cost effective and low energy hybrid cold storage which is capable to store post-harvest products of the small farmers on a personal basis. The energy required by hybrid cold storage is supplied by electric supply of local utility and photovoltaic power plant and battery system. Apart from design paper includes analysis of compound insulation system how the use of compound insulation system improves the efficiency of cold storage. Its simple constructions make it different from the conventional cold storages. Also comparison analysis is also done between proposed hybrid cold storage and conventional cold storage in terms of capital and running cost of the system and use of energy. The result shows proposed hybrid cold storage consumes low energy and also its cost effective; running cost is reduced as it consist photovoltaic panel in system : also that makes it suitable for rural area site where electricity isn’t available for full time a day. Where compound insulation system also improves its efficiency of running cost Key Words: hybrid system, cold storage, var and vcr cycle, cold chamber, insulation 1. INTRODUCTION • Cold storage plays vital role in reducing post-harvest losses; it is an integral component of postharvest management of many fruits, vegetables and processed product cold storage plays vital role in reducing post-harvest losses of edible commodities by enhancing their storability and shelf-life. Timely storage of highly perishable and perishable commodities helps in their regular and continuous supply either for storage or processing purposes. • As per the report by ASSOCHAM, it is claimed that Indian cold chain industry; which stood at 54 billion in 2019; Will register a compound annual growth rate of 30% • India is the second largest contributes 11% of global fruits and vegetable production; but situation with to postharvest management of fruits and vegetables has remained extremely discouraging in India. This trend is continuing in spite of the fact that horticultural commodities generate maximum employment and provide qualities and balanced nutrition. As per an estimated by CEPHET, post-harvest losses in India are estimated at 133 billion rupees per year. almost 40% of less cold storage capacity India have ; major reasons behind loss of post-harvest product is unavailability of proper cold-chain in India. • Enzymes in the vegetables and fruits lens then to increase in the activity of micro-organisms that leads to product deteriation will take place at lower temperature in all food products[1]. the number of cold storages in India is so how to save huge post-harvest product losses ;hybrid cold storage contains lower energy and coming up with lower and affordable prize which improves the efficiency of conventional cold storage; cold storage capacity and cold chain; we can reduce the past harvest losses. Here is detailed hybrid cold storage which is cost effective and consumes lower energy. There are several systems studied on the cold storage [3]-[13] Reflecting the studies in different scenarios. 1.1 Mathematical Model of Cold Storage • To reduce post-harvest losses and save the harvested products from perishing it is important to store it in cold storage. At particular low temperature and humidity the products kept in store in order to prevent it from degradation and perishing. • Heat transfer from a hot region to the cold region; where equation of heat transfer from storage capacity will be given as; ΔQ= C ΔT Where, c is the heat capacity, ΔT is the temperature difference between two objects. Calculations Regarding the Cooling and Heat Transfer inside the Cold Storage. Thermal Conductivity (K) :- The rate at which heat passes through a specified material expressed as the amount of heat that flows per unit time through a unit area with a temperature gradient of one degree per unit distance[2]. K= Q. ΔX/A ((ΔT) W/m.°C Where Q is the heat transfer coefficient, ΔX thickness of heat passes, and a is the area of the object. Hot body cold body Heat flow