| 摘要 |
A heater of flowing water has heat transfer element that is turned in spiral of sheet, formed channels for media. The heat transfer element has two convection surfaces of two thin metal sheets that are together turned into spiral, on those spherical bosses are uniformly placed, these are directed towards inner perimeter, with formation of spiral through channel height of which is equal to height of spherical bosses, and inter-spiral open space for gas motion. |
