| 摘要 |
The vapour pump constituted by a mass and heat exchanger comprises an external enclosure (11), a set of tubes (12) forming an exchanger, arranged inside the enclosure (11) in the longitudinal direction of the latter and opening at their ends on a first radial plane and a second radial plane (53, 54), in which there are arranged means which carry out the positioning and the support of the tubes (12) as well as obturation of the free spaces of the cross-section of the enclosure (11), which are situated outside the tubes (12), so as to define between said radial planes a first circuit for circulation of gaseous fluid inside the tubes (12) and a second, separate circuit for counter-current circulation of gaseous fluid inside the enclosure (11) but outside the tubes (12). One of the first and second gaseous fluids is constituted by hot combustion products charged with moisture which have resulted from a thermal process whereas the other gaseous fluid is constituted by fresh oxidant air. Means (20, 30) of humidification of the air introduced into the enclosure (11) comprise a set of spray nozzles (1) arranged so as to atomise in volume water into a fine mist at least in the entire inlet cross-section of the air circulation circuit and in the entire outlet cross-section of the air circulation circuit, in such a manner that only the faces of the walls of the tubes (12) in contact with the air are humidified. …<IMAGE>… |
