Integrated Economic and Environmental Assessment-Based Optimization Design Method of Building Roof Thermal Insulation

The design of thermal insulation in roofs is very important to reduce energy consumption and decrease the environmental impacts buildings. An integrated economic assessment-based optimization method presented this paper find best candidate scheme for building roofs, including determination roof type optimum thickness. In method, a zonal method-based double-skin ventilation heat transfer model developed predict consumption. Economic benefits due are calculated by using analysis model, Moreover, an dimensionless assessment index proposed evaluate different schemes. thickness determined maximizing sum benefit insulation. validation results real show that predicted data zonal-based agreed well with measured data, maximum relative error 8.2%. extruded polystyrene (EPS), mineral wool (MW), polyurethane (PU) was between 0.082 m 0.171 single-skin low-temperature granary Changsha region China. ranking indexes EPS > MW PU. A can result obtained grey outer surface color influencing factors type, structure, outer-surface should be considered finding solution roofs. help designers efficiently maximize