FIELD: mechanical engineering; as drive of mechanical of thermal engine or machines, or as thermal pump. SUBSTANCE: reduction of duration of the "heating-cooling" cycle of drive member is effected through avoidance of mixability of hot and cold heat-transfer agent by its alternate action on drive member made of alloy possessing thermomechanical memory of form, as well as through use of direct and reverse stroke of power takeoff member for handling the heat-transfer agent. EFFECT: enhanced efficiency. 2 dwg
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