| 摘要 |
Apparatus for ensuring heat exchange between a gas flow and a heat exchanger comprises a duct through which the gas flows. The heat exchanger is mounted in the duct such that the gas flows therethrough. Constrictions for the gas flow are arranged in the duct upstream of the heat exchanger in the direction of gas flow such that jets of gas are created. In an embodiment the constrictions are provided by flow passages extending through a diaphragm mounted across the duct. In use, liquid is sprayed over the heat exchanger and the high velocity jets of gas pick up the liquid and carry it into the heat exchanger. In this way the surfaces of the heat exchanger are thoroughly wetted by the liquid and the efficiency of the heat transfer is thereby improved.
|
