Predictions of the heating and cooling energy requirements in buildings using the degree hours method

Abstract

Abstract Methods for the prediction of seasonal energy requirements for heating or cooling buildings are briefly discussed, and a new method, the degree hours method, is described. This method requires the simulation of the pattern of internal temperature variations in a passive building over a season in response to exposure to the weather conditions. The seasonal heating or cooling energy requirement can then be calculated in relation to any chosen base temperature. Different base temperatures can be chosen for summer cooling and for winter heating, to allow for comfort requirements and casual heat gains. Predictions using this method are compared with results from an alternative published method, for an example building.