Economic optimization and sensitivity analysis of energy requirements in residential space heating

An analytical model which relates performance with costs of additional insulation has been developed and the optimum set of insulation values for the various surfaces of a new building has been determined in a generalized form. On this basis the determinants of the specific energy requirements, corresponding to an optimal level of insulation are identified. The sensitivity of the energy needs to variations in the building structure or design, in the economic conditions, and in the climate characteristics, is also investigated