HEAT TRANSFER AND FLOW CHARACTERISTICS DURING THE FORMATION OF TBAB HYDRATE SLURRY

摘要

The objective of this paper is to investigate the pressure drop and heat transfer characteristics of arncoil heat exchanger in which TBAB hydrate slurry is being formed from 36.5 wt % TBAB solution. The coilrnheat exchanger has a 6 mm internal diameter. First tests were carried out with water in order to validate thernexperimental method. TBAB hydrates are formed by cooling the mixture of TBAB and water at temperaturesrnfrom 20℃ to 12℃. Experimental heat transfer coefficients and pressure drop of TBAB hydrate slurry havernbeen obtained with solid concentrations in the range of 10-45 wt %. The results are compared with values forrnTBAB solution and water. Existing pressure drop prediction methods can reasonably predict thernexperimental data. A method is proposed for the prediction of heat transfer under hydrate formationrnconditions.