Abstract
A newly developed method, which can be used to find out energy and cost efficient buildings, estimates various energy conservation means. It also evaluates each effectiveness of them clearly and decides most desirable ones. This method applies two unique techniques as follows, 1) The architectural design and the building services equipment design are dealt with an integrated way. 2) To estimate energy conservation means, not only energy consumption (that is energy cost) but also the capital required are considered. In latter technique, the effect of each energy conservation means is shown as a two-dimentional vector on the graph, where the abscissa shows the capital required and the ordinate energy cost. The gradient of this vector is used as a criterion of effectiveness of energy and economy. The accumulated effect of some selected means is also drawn as a combined vector. By drawing several auxiliary lines on the graph, the payback period or the profit can be obtained. Finally, we can get the most suitable answer to the different philosophy of building owners. Applying this method, we studied some model buildings and represented several results and its considerations. Using this method, we can plan the energy conservation buildings which can be built at lower capital required than conventional ones.
