| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable effective avoidance of deposition of dust contained in a heat-supply-side gas, maintenance of a stable state of heat transfer for a long time and easy removal of the dust even in a collected state thereof. SOLUTION: In the construction of a heat exchanger wherein a heat transfer part C is provided between a heat-supply-side gas passage A through which a heat-supply-side gas containing dust flows and a heat-receiving-side gas passage B through which a heat-receiving side gas flows and heat is supplied to the heat-receiving-side gas by the heat-supply-side gas through the heat transfer part C, this heat transfer part C is constituted of a porous heat transfer material, while a passage internal pressure setting-maintaining mechanism which can set and maintain the internal pressure in the heat-supply-side gas passage A to be lower than that in the heat-receiving-side gas passage B is provided.</p> |
