Review on automatic vapour compression refrigeration indirect evaporative cooling-direct evaporative cooling hybrid air conditioner

The fully automatic hybrid air-conditioning system has verified as an technology which fully utilizes energy and works very efficiently for air-conditioning of the buildings. A rightly picked hybrid cooling arrangements provide huge cut in waste of energy and improves co-efficient of performance based on different climates. By providing sensors, which measures the temperature and relative humidity present in the atmosphere, we interface this sensors to the microcontroller and by programming these sensors, the system we got, is working automatically according to the change in temperature and relative humidity, which provides the best human comfort conditions. Usually people use Evaporative cooling system and Simple Air-conditioner (Vapour compression refrigeration system). All these systems have their merits and demerits. Basic study of all these Direct Evaporative Cooling–Indirect Evaporative Cooling–Vapour Compression Refrigeration is discussed in this paper. Our system will take their advantages for flexible uses. This is very frequently used system in domestic as well as industrial conditions. It will be very useful and affordable for the common people as well as small and medium scale industries. Integrated cooling unit can be used in various environmental conditions as an eco-friendly and power efficient system. (paper)