| 摘要 |
PURPOSE:To convert the form of heat transmission into the heat transmission of latent heat based on the change of phase, and to improve thermal conductanc by moving the potential heat of exhaust gas to steam as the latent heat of vaporization of water atomized and absorbing the potential heat to water flowed in from an inflow pipe as the latent heat of condensation by the condensation of the steam. CONSTITUTION:Exhaust gas from a diesel engine 1 is introduced into a heat exchanger 4, and water is atomized through a flow-rate regulating valve 11 from a water feed pipe 12 on its midway. Water atomized is mixed into exhaust gas in a fog shape and vaporized by waste heat of which exhaust gas at approximately 300-600 deg.C retains, and the temperature of exhaust gas drops to approximately 100 deg.C while relative temperature rises. With the quantity of water atomized, the flow-rate regulating valve 11 is adjusted properly, and the relative humidity of exhaust gas is adjusted to approximately 100%. A mixed fluid of exhuast gas and steam gas flows into the heat transfer pipe 13 of the heat exchanger 4. On the other hand, water at a low temperature such as 50 deg.C flows into the heat exchanger 4 from the inflow pipe 5, and exchanges heat indirectly with the mixed fluid flowing in the heat transfer pipe 13, and steam in the mixed fluid is condensed. Accordingly, waste heat of which exhaust gas retains is recovered to water flowing in from the inflow pipe 5 in the form of the latent heat of condensation, and heated water flows out of an outflow pipe 6. |
