Comparison of measured and calculated values for the indoor environment in one of the first Danish passive houses

Energy savings in the residential area are essential in order to achieve the overall goal for energy savings outlined in the recast of the Energy Performance of Buildings Directive. This was adopted by the European Parliament in 2010. Unfortunately, the large focus on energy performance has reduced the focus on indoor environment. This has, among other problems, resulted in problems with overheated buildings. Therefore, a need for a simple and cheap method for evaluation of possible problems with overheating has arisen among the designers. A method which can be used early in the design process.  The paper compares the measured indoor temperatures of a Danish passive house with results of both a simple prediction of the 24-hour average and maximum indoor temperature during summer and a dynamic simulation of the indoor conditions in the building in order to find a useable method for prediction of problems with overheating.