Determination of building envelope and operation period of heating system according to life cycle cost

In this study an approach for the determination of the most convenient building envelope-operation period alternative in relation to the life cycle cost and climatic comfort is improved. For the application of the approach, total heat loss and life cycle cost of the building envelope-operation period alternatives of a sample building, which is heated intermittently and used during underheated period of the year were calculated and alternatives which provide the minimum life cycle cost are determined as a most convenient alternatives. This study is carried out in Ankara, which is representative citie for temperate-dry zone of Turkey.