| 摘要 |
FIELD: heat power engineering. ^ SUBSTANCE: heating device comprises heat exchanger that is provided with varying surface area and is composed of unmovable and movable radiators, telescopic tubes, and sealing devices. The radiators are separated by baffles and interconnected through the telescopic tubes mounted in a staggered order. The greater diameter of the tubes is provided with finning plates, and movable radiator moves along the guide between the arresters by means of an actuator controlled by the temperature difference relay. ^ EFFECT: enhanced efficiency. ^ 1 dwg |
