Direct-contact heat transfer from a liquid spray into a condensing vapor

Previously published work has shown that the direct-contact heat-transfer performance of a liquid spray into a hot noncondensing vapor is intermediate between the performance of a single baffle tray and 2 ft of random packing. Data obtained when spray nozzles were utilized to introduce subcooled reflux into dew point vapor above a pan distributor indicate that it would be extremely difficult to find a more efficient heat-transfer device than the nozzles plus a few inches of void space.