| 摘要 |
The invention relates to a heat exchanger for exchanging heat between a first material or material flow and a second material or material flow, comprising at least one wall that separates the materials or material flows, wherein the surface of the wall has an arithmetic mean roughness Ra of 2 to 20 mum, preferably 10 mum, or a roughness depth Rz of 10 to 50 mum, preferably 30 mum. |
