Online Building Energy Simulation and Optimization BESOO v101

Online Building Energy Simulation and Optimization (BESOO) is a system of online internet programs that calculates temperatures, energy and other parameters for various cases and conditions based on input values. The current version (101) calculates temperatures of the outside wall layers and room air temperature at constant ambient air temperature. This version calculates conduction heat transfer through outside walls only. Solar radiation is not included in the current version. The online simulation program was successfully validated using the Thermal Time Constant (TTC) method. This work includes examples of the application of BESOO to determine room air temperature without space heating or air conditioning at various ambient air temperatures and thermal insulation thicknesses. It may be useful to select optimum building design, especially the location and thickness of insulation, and thermal mass such as a concrete layer. The online internet program according to this work is available on nowagreen.com/BESO/101 (free, no login required).