(6) January: Heating. Longer spell of cold weather.

(6) Heat Pump System LEO_2 January

(6) If the ambient temperature is below 0°C for days or weeks, not much energy can be harvested by the solar collector. In the underground tank the volume of ice increases, a thick layer of ice is surrounding the heat exchanger in the tank.
 Brine temperature and thus the efficiency of the heat pump decreases. This triggers the ‚self regulating self-protection‘ mechanism: Since performance decreases, a greater part of the required heat energy has to be provided by electrical energy and the underground tank‘s energy storage is not depleted abruptly.

Heat Pump System LEO_2: Operating Statuses

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