RT Journal Article ID 299dadac2ca9368f A1 Pang, Zhanxi A1 Wang, Lushan A1 Lv, X. C. T1 A MODEL TO CALCULATE HEAT LOSS OF FLOWING SUPERHEATED STEAM IN PIPE OR WELLBORE JF Computational Thermal Sciences: An International Journal JO CTS YR 2016 FD 2016-11-21 VO 8 IS 3 SP 249 OP 263 K1 superheated steam K1 heat loss K1 specific enthalpy K1 specific volume K1 pipeline K1 wellbore AB Aiming at the flowing of superheated steam in a horizontal pipe and vertical wellbore, an improved model of heat loss was established to calculate physical properties of superheated steam along a pipeline or wellbore. Based on the basic theory of mass conservation, momentum conservation, and energy conservation, the model comprehensively considered the physical properties of water at different states, the structure of the pipeline and wellbore, friction loss, and heat conduction and heat convection during flowing. The test data of the oilfield verified that the model could give high-accuracy results about temperature and pressure levels. The results showed that the optimum steam flow rate was 25−35 t/h for a surficial horizontal pipeline with inner diameter of 0.1 m and the optimum steam flow rate should be chosen 3.5−7.5 t/h for a vertical wellbore with inner diameter of 0.076 m. PB Begell House LK https://www.dl.begellhouse.com/journals/648192910890cd0e,44d3931b26ad7e28,299dadac2ca9368f.html