Experimental investigation of a Direct evaporative passive cooling System using porous structured Material as water storage medium

Abstract

Urbanization and industrialization have started increasing the needs of human beings in terms of food, energy, water, and space for the ever-rising population. Energy Information Administration (EIA) forecasts that India would be one of the countries with tremendous growth in buildings energy consumption by 2040. However, this technological growth has a catastrophic effect on the environment through pollution, leading to serious health hazards. The fastest growth of the population has led to greater use of HVAC appliances to achieve desired comfort conditions. The compressor driven air-conditioners provide the required comfort at any time irrespective of the climatic conditions, but at the cost of exorbitant energy consumption. Environmental hazards of using these air-conditioners are global warming and depletion of the ozone layer, caused by the leakage of primary refrigerants into the atmosphere. In this scenario, the development of energy-efficient, environment-friendly technologies is essential for sustainable growth. newlinePassive cooling, which is historically proven for low energy consumption and environmentally friendly, is an alternative to the globally faced climate issues and their effects on building cooling and other domestic applications. Natural ventilation, evaporative cooling, ground cooling and radiative cooling are few natural cooling techniques, where the climatic conditions dictate the type of cooling to be used for building applications. Evaporative cooling review substantiates its ultimate meeting of the cooling energy demand of hot-dry weather conditions. The performance of evaporative cooling systems depends upon the pad material, the design of the nozzle, and the method of water-air contact. In these systems, water is supplied to the pad or nozzle with a pump. Continuous operation of the pump increases the electrical energy demand during the summer season newline