Experimental Study On Fan Water Curtain Diluting Water-Insoluble Heavy Gas in Open Space

Abstract:Experiments were done to research fan water curtain diluting water-insoluble heavy gas (carbon dioxide as an example) dispersion in open space in this paper. In experiments, the influence of water flow pressure, distance between leakage source and water curtain, height of leakage source and squirt angle of fan water curtain on dilution effect were done. Experimental results show that the higher the water pressure of fan water curtain is, the lower the concentration of carbon dioxide behind the water curtain is, thus, more efficient the dilution effect is. However, when water pressure is no lower than 0.25MPa, the concentration of carbon dioxide behind the water curtain will not decrease. Also, when leakage source height is higher, the concentration of carbon dioxide is higher, and dilution effect is worse. When water curtain is closer to leakage source, the concentration of carbon dioxide downwind is higher. When the ratio of K, which is leakage source height to the distance of water curtain away from leakage source, is 0.6, and dilution effect is the best. Furthermore, when the squirt angle is 60°, the dilution effect is comparatively good.

Key words: Fan water curtain，Heavy gas，Carbon dioxide，Dispersion