• Smt P. Vijaya kumari

In Today’s world one cannot refuse the use of refrigeration system in life not only in kitchen but also in industries too and also global warming is being increasing year by year. There are many reasons like pollution, deforestation, water contamination, etc... In coming years, the major problem before us is depletion of ozone layer which is caused by the release of CFC’s. Some of the equipment which causes this effect are refrigerators, Air Conditioners. This project utilizes the solar energy for its operation. In this project I mainly focus on a solution to control this problem I have focused on refrigerators which releases CFC’s. Here I am designing a mini solar based refrigerator which is cheaper as well as eco-friendly. This project does not need any kind of refrigerant and mechanical device like compressor, prime mover etc., for its operation. The main purpose of this project is to provide refrigeration to the remote areas where power supply is not possible. Here I am using Micro controller (AT89S52) allows dynamic and faster control. Liquid crystal display (LCD) makes the system user-friendly. In this project I am using solar panels for charging a Lead Acid Battery (12V, 1.2 Amp hrs.), a peltier thermoelectric device when connected to battery generates cool effect and hot effects depending on the mode required by the user. Since Iam using this for fridge we need only cool mode. A peltier thermoelectric device is connected to the battery to generate cooling effect. We need to display the voltage for that Iam using ADC0808 which is given to the controller. For this ADC Iam giving a clock pulses through 555 timer to perform its operation.

Solar panel, Lead Acid Battery, Heat sink, CFC’s, Cooling fan, Thermoelectric Refrigerator, LCD, ADC & Peltier plate etc.

"DEVELOPMENT OF SOLAR POWERED MINI THERMOELECTRIC REFRIGERATOR FOR MEDICINE PRESERVATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 10, page no.e253-e262, October-2022, Available :http://www.jetir.org/papers/JETIR2210436.pdf

"DEVELOPMENT OF SOLAR POWERED MINI THERMOELECTRIC REFRIGERATOR FOR MEDICINE PRESERVATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 10, page no. ppe253-e262, October-2022, Available at : http://www.jetir.org/papers/JETIR2210436.pdf