Experimental Study on Gas-Liquid Flow Distributions in Upward Multi-pass Channels

Abstract

The gas-liquid flow distributions in multi-pass upward parallel channels and pressure inside headers were examined experimentally. Attention was directed to the influences of the back-pressure condition and of the flow-inlet condition on the gas-liquid distributions to the branches. Experiments were conducted in an isothermal air-water flow system. The influence of the backpressure condition changed depending on the flow-inlet condition. In the mist-flow inlet, the water distribution uniformity was improved. The pressure in headers was nearly uniform.