Improved Night Cooling System for Home

This paper proposes a new approach of cooling system for home. The main advantages of this cooling system are it consumes very low power, no emission of harmful gas and support for health. The basic principle of the system is free cooling is taking place when the external ambient air entropy is less than the indoor air enthalpy and the cool external air is transferred to the building room directly. The efficiency of the external cool air system in the past years is very low due to external air velocity .Due to this drawback this system is not popular. But this paper a new model is proposed to increase the efficiency of cooling. In this paper free cooling is achieved by in conjunction with air collector systems and rotary fan systems. The proposed Air conditioning systems either provide supply 100%fresh air using outside air. So this can be use in the cases of hospitals, densely occupied areas such as theatres etc. This system is only effective when the outer temperature is less than inside temperature.