Economic and Energy Analysis of Building Retrofitting Using Internal Insulations

The energy-saving requirements for most buildings focus on improving the insulation and airtightness of a building’s envelope. In this paper, authors have investigated effect additional internal energy consumption heating cooling in residential building. Energy performance analyses were conducted with four thermal systems three locations using WUFI Plus software. Global Cost Method Simply Pay Back Time been used to assess compare economic viability retrofit systems. results show that, relation energy, retrofitting wall can be an alternative traditional external insulation. assessment low-energy buildings, however, cannot based criteria. usual approach has exceptionally long payback time, which is unacceptable. turn, Method, only applied materials. With high investment costs, thermo-modernization improvements do not contribute significant savings. conditions comfort analysis temperature steam pressure play decisive role assessing type solution.