Experimental investigation of the phase fraction of wet gas based on convective heat transfer

Abstract

In the present stage, wet gas measurement is playing an increasingly significant role in the oil and gas industry. Phase fraction is an important parameter for the determination of pressure drop and heat transfer coefficient in wet gas flow. In this paper, experimental investigations of the wet gas phase fraction based on convective heat transfer (CHT) is conducted. In order to describe the “over reading” of CHT coefficient due to the existence of the liquid phase, it is innovative to define ω as the ratio of the CHT coefficients of wet gas and gas alone. An easy-to-use correlation is proposed by using the gas flow rate and the temperature measured before and after the electrical heating belt. The experiment was carried out in the wet gas flow loop in Tianjin University. System pressure ranges from 0.6MPa to 1.2MPa, and gas mass fraction (GMF) is from 23.8% to 100%. Final results show that the relative deviation of all data points are less than ±15%. There is no doubt that this correlation provides new data on the phase fraction in wet gas annular flow and benefits other researchers in wet gas measurement.