| Vergleichende Untersuchungen von Standard-Klimadatensätzen (Testreferenzjahren) mit gemessenen Langzeit-Klimadatensätzen für den Standort Kassel (2006) | |||||||||
Abstract | |||||||||
| For an inner-city location in Kassel representative TRY (test reference year) data sets are compared with technical measurement results of long-term climatic data especially as regards their application for the simulation of a building's thermal performance. This research study was carried out on the basis of climate measurements which were recorded over the period from 1994 to 2003 by the climate station of the building physics department at the University of Kassel. Both the analysis of the mean temperature values and that of the excess-temperature degree hours show, that the test reference year in summer comprises considerably lower outside temperatures than the 10-years average of the measurements. Not only the test reference standard year but also the data set of the German Meteorological Service for an extremely warm summer proved to be not representative. For winter, the standard year reflects the average measured conditions quite well. The outside temperature of the test reference year for a "cold winter", however, lies well below the values of the coldest measuring periods in January and February. The comparison of simulation results with various sets of climatic data shows that deviations in the sets of climatic data also lead to clear differences in the computed values of temperature conditions in summer and in the heating energy requirement. The decade from 1990 to 2003, as is known, is one of the warmest decades since the beginning of weather recording. Whether the deviations described are due to this or rather to the very different topography of the reference location by comparison with the measuring station cannot be clarified on the basis of this investigation, presumably there is an interaction of both influences. The research study quantitatively shows, however, the range of error which may result from the application of reference climatic data. | |||||||||
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