FIELD: transport.
SUBSTANCE: extra heater comprises liquid-type heat generator with hydrodynamic chamber of selective fluid heating. Said hydrodynamic chamber has inlet to feed fluid therein and outlet to discharge heated fluid therefrom. Inlet is communicated with the first check valve while outlet is connected with second check valve. First check valve is adapted to receive fluid from second check valve. First check valve can shut off fluid flow between first check valve and inlet in response to fluid received from second check valve.
EFFECT: additional cooling fluid heating for efficient heating of passenger cabin.
28 cl, 35 dwg
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