HOT WATER TANK, AND METHOD FOR THE OPERATION OF A HOT WATER TANK

摘要

The invention relates to a hot water tank (100) comprising a volume of water (12) arranged within a container (10) that has a geodesically upper end (16) and an opposite lower end (14). In order to determine a caloric content of the volume of water (12), an acoustic transmitter (32) and an acoustic receiver (34) are disposed in the volume of water (12) to determine an acoustic signal within the volume of water (12). Furthermore, an evaluation unit (40) is provided which derives the available caloric content from the acoustic propagation time. The invention further relates to a method for operating a hot water tank.