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Transition regime convection heat transfer coefficients of zinc oxide/ethylene glycol–water (ZnO/EG-W) nanofluid in a circular pipe were investigated experimentally where the mass fraction of nanoparticles in the base fluid is from 0 to 5 wt.% and at operating temperatures. Different ZnO/EG-W mass concentration nanofluids were prepared, and the physical and thermal transport properties including density,...
Numerical simulation of hot flow field in the furnace of a supercharged boiler is conducted with FLUENT software. Velocity field, temperature field and composition concentration field are obtained in the furnace with single burner on front wall and with double burners on front & back wall, respectively. Through comparative analysis, it is concluded that combustion and heat transfer performance...
A 149 tubes simplified physical model is established by reasonable simplified assumed conditions. The basic differential equations of fluid flow and heat-transfer are obtained on the base of the thermodynamic process of superheater heat transfer. Spatial distribution of thermodynamic parameters under steady-state and dynamic working process is achieved directly by simulating the whole superheater...
The effect of viscosity on the heat and mass transfer of NH3/H2O falling film absorption with Fe2O3 nanofluid is studied. The results show that, the viscosity, influenced by the ingredient of nanofluid, directly influence the performance of absorption. The heat and mass transfer of absorption, is weakened by high viscosity nanofluid of only adding sodium dodecyl benzene sulfonate (SDBS), while, enhanced...
In this study, the first and the second law of thermodynamics are used to assess the heat pump system performance utilizing sewage source (SSHP). The system was designed, constructed and tested in Harbin Engineering University. Energy and exergy analysis methods were used to evaluate the system performance, exergy loss of each component and total exergy loss of all the system components. The results...
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