| 摘要 |
Part of the generated vapours such as water vapour are recirculated by means of ejector to the top section of an evaporator. This not only improves the film distribution but also increases the average film velosity and therefore the heat transfer of such an appts. It required the top section of the evaporator can be provided with a separate vapour leader. With a tube plate, facilitating the direct injection of vapour to the individual tubes. |
