Author
Jia-Fei Wu
Bio: Jia-Fei Wu is an academic researcher from East China University of Science and Technology. The author has contributed to research in topics: Cooling tower & Mass transfer. The author has an hindex of 2, co-authored 2 publications receiving 24 citations.
Papers
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TL;DR: In this article, the effect of degree of saturation of inlet air on the heat transfer rate and process-water outlet temperature was presented, and little difference was found between the unsaturated and supersaturated conditions if the outlet air was supersaturated.
23 citations
TL;DR: In this article, the thermal and hydraulic performance of plain and oval tubes closed wet cooling tower (CWCT) is investigated numerically using Computational Fluid Dynamics (CFD), ANSYS Fluent 12.1.
Abstract: The thermal and hydraulic performance of plain and oval tubes closed wet cooling tower (CWCT) are investigated numerically. Computational fluid dynamics (CFD), ANSYS Fluent 12.1, is implemented for the numerical solution. Species transport without reactions is adopted to simulate the mass transfer from the air-deluge water interface to the air. Different turbulence models and near-wall treatments are used to assess which model fits the data better. The mass transfer Colburn factor j m , and friction factor f are presented and compared with experimental data. The proposed CFD model is also applied to predict the mass transfer coefficient of another CWCT and compares well with the experimental data.
9 citations
Cited by
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TL;DR: Microporous layers (MPLs) obtained from inks containing three fluorinated polymers (perfluoroalcoxy, fluorinated ethylene propylene) replacing conventional PTFE were prepared as discussed by the authors.
59 citations
TL;DR: In this paper, the authors proposed an upward spraying cooling tower, in which the aqueous solution is sprayed upward from the bottom, to reduce the drag resistance and enhance the efficiency of conventional RUCTs.
30 citations
TL;DR: In this article, a hybrid finite-element/finite-difference approach was proposed to solve the 3D unsteady energy equation in nonisothermal fluid flow over a staggered tube bank with five tubes in the flow direction.
Abstract: This article presents a hybrid finite-element/finite-difference approach. The approach solves the 3-D unsteady energy equation in nonisothermal fluid flow over a staggered tube bank with five tubes in the flow direction. The investigation used Reynolds numbers of 100 and 300, Prandtl number of 0.7, and pitch-to-diameter ratio of 1.5. An equilateral triangle (ET) tube pattern is considered for the staggered tube bank. The proposed hybrid method employs a 2-D Taylor-Galerkin finite-element method, and the energy equation perpendicular to the tube axis is discretized. On the other hand, the finite-difference technique discretizes the derivatives toward the tube axis. Weighting the 3-D, transient, convection-diffusion equation for a cube verifies the numerical results. The L2 norm of the error between numerical and exact solutions is also presented for three different hybrid meshes. A grid independence study for the energy equation preceded the final mesh. The outcome is found to be in acceptable concurrence ...
25 citations
TL;DR: In this paper, the authors numerically investigate the thermal-hydraulic performances of the closed wet cooling towers (CWCTs) installed with plain, oval, and longitudinal fin tubes in the heat exchanger.
25 citations
TL;DR: In this paper, the effectiveness cooling tower model by Braun is adopted to model the cooling tower performance with field measurements, and a typical electric chiller model based on the condenser entering temperature is applied from the EnergyPlus Engineering Reference.
22 citations