FIELD: human vital needs satisfaction.
SUBSTANCE: thermos witch is thermally connected in a device with clean water, which is located on the drain line and which, when the tank temperature falls below a certain temperature, controls the time unit that opens the drain valve for a certain period of time. The specified period of time is calculated so that the tank is emptied in any case.
EFFECT: possibility of avoiding freezing of operating water and damage to pipelines, energy saving.
4 cl, 3 dwg
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