Simulation of Effect of Changing supply air velocity on Indoor Environment in Air Conditioning of Spaces

Abstract

Air conditioning is the method of conditioning of air as per the requirement of indoor environment. The indoor environment is characterised by the temperature along with velocity and other conditions of air. In a conditioned space it the objective of air conditioner to establish indoor environment which can provide comfort to the occupants of the conditioned space. Temperature and other conditions of human comfort are achieved in the conditioned space by proper distribution of conditioned air into the space. The supply air conditions and air distribution method both affect the indoor thermal environment. These also affect the energy consumption in refrigeration and power requirement in the blower.  Engineers and designers are always interested in design and development of air conditioning system which consumes minimum power while providing comfort to its occupants. Researchers are working both in the development of efficient air conditioning methods as well as newer and efficient air distribution methods and optimised supply air conditions. In this paper effect of various supply air conditions for a typical air conditioning space has been numerically simulated to predict the optimum indoor thermal environment.  The results show the optimum values of the temperature and velocity for the typical arrangement of air distribution.