International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 07 | July 2023
p-ISSN: 2395-0072
www.irjet.net
Comparative Study of Experimental Investigation and Theoretical Verification of Modified Solar Dryer used to Produce Mango Pulp Pooja Ahirwar1, Prof. Deenoo Pawar2 1M.E. Student, Dept. of Mechanical Engineering, L.N.C.T, Bhopal (M.P.) India.
2Assistant Professor, Dept. of Mechanical Engineering, L.N.C.T, Bhopal (M.P.)
---------------------------------------------------------------------***--------------------------------------------------------------------Solar energy is available in almost all the regions of India. Abstract - Looking at the statistics of the last few years,
With the developing technology, solar energy has been released for many portable applications used in daily life. Applications of solar power in agriculture such as pumps and tractors are proposed by the researchers. Processing of the crop by solar drying technique is proposed by the authors. The design of a solar drying system for the Indian agriculture sector is presented in this paper. Crop protection has always been a challenge for farmers in India. Indian farmers are mainly owners of small land. The technology is very uneconomical to buy small land and many of them do not have the money to buy modern equipment. The quality of the product can also be improved in the conservation process as we can add or remove any substance from the crop in any quantity [4, 7].
India is known as an agricultural country, which is contributing about 15 to 20% of the Indian economy. In India, we mainly lag behind other developing countries in the processing for preservation of such agricultural products. There is a lack of facilities in the agriculture sector in the developing countries of the world and there are many factors affecting agriculture. About 50% of the people in India are directly or indirectly associated with the agriculture sector through farming and related by-products manufacturing. Agricultural application of solar dryer is widely used in developed countries to preserve vegetables. Preservation of many agricultural products is possible with solar dryers. We get maximum sunlight in the world. The use of solar energy for product drying and other related purposes would be very economical. In their work the authors have presented the design modification of solar dryer for better utilization of solar energy. This is seen with the inclusion of spiral or helical type convection tube which inducts radiation from the Sun and emits radiant energy from the Earth to improve the heating rate by 22-27%.
Solar energy is converted into heat for further use or conversion into useful work. Heat is generated in drying products to preserve them for future use. To dry any product the air is heated to a predetermined temperature so that it can be used to absorb the moisture from the products. The solar power potential of India and its advantages over other energy generation methods make it important to effectively trap solar energy for as many applications as possible. Automation of control drying is very important to use it effectively along with new technological aids every day.
Key Words: Solar Dryer, DC Motor, Relays, Archimedean spiral, Heater, PV cells, PCM.
1. INTRODUCTION With the use of solar energy for drying purpose, device used is solar dryers that are devices that control the drying process and protect agricultural produce from damage caused by insects, dust and rain. Besides it takes less time of drying and space per unit mass of product to be dried. Also, it is cheaper than other mechanical drying methods. Solar dryers are futuristic to the solutions to control the world's food and energy crisis. Using modifying technique of drying, most agricultural products can be preserved and processed more efficiently through the use of solar dryers [1–4]. Solar dried foods are quality products that can be stored for long periods of time, can be easily transported at minimum cost and at the same time provide excellent nutritive value. Therefore this paper presents the design and fabrication of solar food dryer for sun drying of agricultural produce, especially advanced mango juice (mango pulp or mango papad) [2,3–5].
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Fig.1: Mechanism of heat and mass transfer process through mango paste
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