Solar Cooler with Summer and Winter Application

Energy - demand is one the major need for our country. Finding solutions, to meet the "Energy - demand" is the great challenge for Social Scientist, Engineers, Entrepreneurs and Industrialist of our Country. Applications of Nonconventional energy are the only alternate solution for conventional energy demand. Our basic motive is to regulate the operating power in solar cooler. This project presents the results of an experimental investigation carried out to minimize the power consumption of a solar cooler running at various speeds. The experiments have been carried out for a total of three speeds that is low, medium and high. We carried out speed control by minimizing the input current at multiple speeds with the help of resistors. For high speed, we have connected a couple of resistors in series whereas for medium speed a couple of resistors were connected in parallel and for low speed a single resistor was used. We have replaced DC motor which is traditional coolers with Permanent Magnet DC motor. PM DC motor is highly efficient since no electrical energy is used or losses incurred for developing or maintaining motor’s magnetic field. Its size is more compact and a better dynamic performance can be expected due to higher magnetic flux density in air gap.PM DC motor has an essentially simplified construction and it is maintenance free. We even tried to replace the concept of pump by including cotton to the cooler setup. Water is made to flow from a higher potential to lower potential making the grass and cotton wet. Even if the potential of water becomes lower, it does not create any hindrance to the function of cooler. Elimination of pump reduces the expenses in addition to lowering the overheads caused while lifting the water.