CARRIER-GAS HUMIDIFICATION-DEHUMIDIFICATION USING HEAT-TRANSFER MEMBERS FOR ENHANCED HEAT RECOVERY

摘要

A humidification-dehumidification apparatus featuring enhanced heat recovery includes a shared interior wall extending along a vertical axis and defining and separating humidifying and dehumidifying chambers. Heat-transfer members extend through the shared interior wall and across a majority of each chamber, while a spray device is configured to direct a spray of liquid feed composition onto the heat-transfer members inside the humidifying chamber. The liquid feed collects on the heat-transfer members in the humidifying chamber, and water evaporates from the liquid feed on the heat-transfer members, leaving a concentrated remainder of the liquid feed in liquid form. Carrier gas passes through the humidifying chamber where evaporated water is entrained in the carrier gas to form a moist carrier gas that passes from the humidifying chamber to the dehumidifying chamber, where the water vapor condenses from the moist carrier gas on the heat-transfer members.