Simulation of Very High Snow Loads on Solar Thermal Collectors

A new test device for the simulation and testing of very high mechanical loads on sloped roofs for a realistic rating of the snow load resistance of solar thermal collector systems was developed. Several sensors and cameras visualize the occurrence of snow load-induced damages during the test to identify structural weak points of a collector and its mounting system. In collaboration with the Swiss building insurances, a test and certification procedure was established aiming at a reduction of snow load cases.