Computer model for the energy consumption, cost, energy content and environmental loads of buildings.

The computer model SIN-BIP is built as a combined model that can calculate energy consumption, price and environmental load for a building to get an energy efficient building. The program has a database with information of price, thermal conductivity, moisture conductivity, energy content and CO2-emission for materials. On the basis of this information can the program calculate for each construction, the U-value, the moisture resistance (and if there is condensation), the price, the energy used for producing the material and the environmental load from CO2-emission at the production. All this information is combined in tables and plots for each construction and for the whole building using the standard spreadsheet program EXCEL. The program SIN-BIP can be used for comparison of different materials and constructions based on evaluation of cost, total energy consumption and environmental load in the lifetime of the building. The most serious problem is to get information from the producers of building materials of the energy used for production and the CO2-emission.