Abstract
In this paper ,we analyzed the quantity of energy saving taking account of reduction of fresh air (Outdoor Air). At first , we calculated the values of normalized concentration in an occupied zone (Cn) in an office space by CFD simulation techniques. In the office model targeted in this paper ,the Cn were 0.82(cooling) and 0.85(heating), therefore reduction of fresh air was 7.5 %. Based on the fresh air flow Rate in which estimated by using Cn data ,we calculated energy consumption, CO_2 emission and running cost of total HVAC System. As a result ,energy consumption and CO_2 emission will be reduced by 2.7% -1.9% , and running cost will be reduced by 11.0%-0.5% respectively.
