Discuss on the Air Curtain Dehumidification Technology Program of Underground Engineering

To solve the moisture problem at the hallway near the protective door of the underground engineering, an air curtain dehumidification technology program has been proposed and discussed. For the moist air from the protective door, the air curtain dehumidifier can be used to control its flow direction: all moist air will directly enter the inlet of the dehumidifier by the action of negative pressure gradient without any ventilation duct. The main technical features of the program are that, the air curtain dehumidifier should be installed at the corner of the ground or hanged on the wall beside the inner side of the protective door, which inlet and outlet should be collocated in the level and along the long direction of the underground engineering; the dehumidifier rotating speed should be controlled by the humidity and the inflow speed of the fresh air. Preliminary studies indicates that this technical solution is feasible, but still there are a lot of details that need to be studied in follow-up research process.