Refrigeration and/or freezer device

摘要

The device has a current consumer, and a memory for storing time-dependent current-tariff energy signal. A regulating or controlling unit controls or regulates the operation of the device under consideration of the energy signal stored in the memory based on a control algorithm. A heat accumulator i.e. latent heat accumulator, has a storage medium with melting temperature in the range between 2 and 5 degrees Celsius. An energy storage has a battery and an electrolyzer, and the controlling unit has a proportional-integral-derivative controller.