| 摘要 |
The invention relates to a process for energy recovery from the air flow between the internal room air and the external air with fans 5, 6 which press the air through heat accumulators 3, 4 in mutually opposite flow directions, a heat accumulator 3, 4 and a fan 5, 6 working, mostly in opposite directions, in each of two mutually separated ducts 1, 2, and the directions of rotation of both fans 5, 6 changing simultaneously at regular intervals. |
