Abstract
According to the Kyoto Protocol, we have to reduce 6% of global-warming-gas emission till 2008-2012 from that in 1990. This would be quite difficult goal to be achieved in time. In this situation, we need to find out measures to reduce energy consumption of residential use which is highest rate in energy consumption of Japan. According to air-conditioning system has the principal part of energy consumption in residential houses, we investigate real efficiency of the system for an advanced air-conditioning system design.
