.... Unsteady-state heat and mass transfer models are proposed for each region. Two diffusion streams are evaluated: the dissolved wax molecules moving from the pipe center toward the wall due to temperature gradient and subsequently concentration gradient and the wax molecules diffusing from the liquid-gel...

... . The model construction is based on a key bubbling fluidized bed feature: A fuel-rich (endogenous) bubble is generated at the fuel injection point, travels inside the bed at constant pressure, and undergoes chemical conversion in the presence of mass transfer with the emulsion phase and of coalescence...

... current density mass transfer heat transfer temperature distribution electrochemistry temperature measurement Polymer Electrolyte Fuel Cell Thermography Membrane Temperature Field One of the most important technical issues in a polymer electrolyte fuel cell (PEFC) is the temperature...

.... The model accounts for the continuous mass transfer between the pipe wall and the multiphase fluids flowing in the pipeline. Consideration is given to the processes of PCB desorption from the pipe wall, and the possibility of subsequent re-adsorption to the pipe wall. To capture the multiple mechanisms...

.... 03 November 2000 07 June 2001 pipe flow transients motion control gases liquids simulation differential equations fluid dynamics mass transfer Pigs are normally utilized in different stages of the pipeline life to perform operations such as dewatering, cleaning...

...H. Wang; D. Vedapuri; J. Y. Cai; T. Hong; W. P. Jepson Mass transfer studies in oil-containing multiphase flow provide fundamental knowledge towards the understanding of hydrodynamics and the subsequent effect on corrosion in pipelines. Mass transfer coefficient measurements in two-phase (oil/ferri...

.... Chen. 20 March 2000 27 September 2000 refrigerators air conditioning cooling compressors mass transfer size control heat exchangers temperature control Most of the refrigeration and air-conditioning systems are designed for an expected peak load. It has been...