Heat storage device for heating water comprises a heat exchanger element arranged in shape which increases the inner and outer surface ratio of the whole surface

摘要

Heat storage device (1) comprises a heat exchanger element (2) arranged in shape which increases the inner and outer surface ratio of the whole surface. Preferred Features: A heat exchanger element is in the form of a helix or harp in the heat storage device. The heat exchanger element is arranged with its longitudinal axis parallel to the height axis of the heat storage device. Several heat exchanger elements are arranged in the device.