Goal directed life cycle costing as a method to evaluate the economic feasibility of office buildings with conventional and TI-facades

Transparent insulation systems (TI-systems) of less than 20cm thick have been developed as an alternative to opaque wall insulation and windows, which provide a financial return to building occupants when applied to building facades. Lack of detailed cost analysis of TI-systems is a major constraint to the application of TI-wall and TI-glazing in buildings. A goal directed life cycle costing (LCC) technique and sensitivity analysis used to evaluate the economic feasibility of TI-applications in office buildings form the basis of this research. It was undertaken as part of research to determine optimum energy and cost performance of TI-systems for external cladding of high-rise and low-rise office buildings in temperate and tropical climates.