First Experience in Vacuum Insulated Hot Water Storage with 100 m~3

摘要

This article presents the results of an experiment that aimed to determine the effective thermal conductivity of the first 100 m~3 vacuum-insulated hot water heat storage. For this, the store was filled with 82°C hot water. Thereafter, the temperature decrease was measured over 31 days. A U-value of 0.36 W/(m~2·K) was calculated using the energy balance model of Raab. This article also presents some pictures of the construction of the heat store.