Large heat storage systems are increasingly needed to cover the heat requirements of villages and towns with as little CO2 as possible. The most economical construction method is the so-called earth basin heat storage system, which consists of a water-filled earth basin. In Denmark, several of these heat storage tanks with a water volume of 35,000 to over 200,000 m³ are already in operation. In Germany, the demand for underground heat storage tanks is now also increasing. The storage covers built since then are insulated, float on the water basin and cannot be used. Individual requirements such as the drainage of rainwater and the venting of the storage tank have not yet been reliably solved.
The seminar will examine how and in which design principles membranes can be used as covers for ground basin heat storage tanks. At the beginning of the seminar, participants will be introduced to the current construction methods of ground basin heat storage tanks and the experiences and results of existing cover constructions will be discussed. The seminar participants will then familiarise themselves further with the task through a brief analysis. The focus of the seminar is the independent development of a technical concept for a membrane cover of an underground heat storage tank.
The seminar will be organised by Dirk Mangold (earth basin heat storage) with the support of ILEK (membrane constructions).