| 摘要 |
The invention relates to heat-exchangers, especially of the type where the one medium is constituted by a gas or a vapor. It has a plurality of elongate elements which between themselves define the flow channels of the mediums. According to the invention, the elements comprise cores made of a material of high heat-conducting capacity. The cores are, at least partly, provided with a covering made of another material. The covering performs two functions; it keeps the cores fixed in their proper locations and they shield off the cores from direct contact with one of the two mediums. The covering may be metal or a synthetic resin. |
