| 摘要 |
A heat exchanger comprises a tube 1 through which a fluid flows, a liquid film removal structure 2 joined to the tube and a liquid film assistance structure 3 adjacent the tube and in use prevents droplets of the liquid being scattered into the air. The tube may be orientated vertically, made from stainless steel or copper and have a smooth surface. The removal structure may be circular, elliptical or polygonal in shape, may be made from plastics, rubber or stainless steel and joined to the tube elastically or by welding. The assistance structure may be a rod joined to the end part or may be spaced (fig 4) from the removal structure, may be parallel with the tube, may be circular, elliptical or polygonal and have a surface structure having a higher wettability than the removal structure. For example, the assistance structure may be stainless steel with a roughened surface. The assistance structure may be joined to the removal structure by welding or soldering. A plurality of removal structures having an interval spacing (pitch) along the tube may decrease (fig 6) and their size / height may increase further down the tube (fig 7). |
