| 摘要 |
<p>The device is characterized in that it is made in the shape of two parallel coils situated side by side consisting of several channels (1-10) where the channels of one coil (1, 3, 5, 7, 9) are arranged to the cold medium to be heated, and the channels of the other coil (2, 4, 6, 8, 10) are arranged to the warm medium, from which the heat is to be obtained and the media are arranged to flow counter-current in relation to each other and so that the channels, to shape the coils, are made of parallel straight parts which in their ends are connected to half-circle-shaped-parts and furnished with doors for controlling and cleaning all channels simultaneously.</p> |
