R
Ralph L. Webb
Researcher at Pennsylvania State University
Publications - 151
Citations - 9463
Ralph L. Webb is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Heat transfer & Heat exchanger. The author has an hindex of 50, co-authored 151 publications receiving 8672 citations.
Papers
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Single-phase heat transfer in micro-fin tubes
TL;DR: In this article, heat transfer and friction characteristics for single-phase flow in single-grooved and cross-grained micro-fin tubes were analyzed for forced convection condensation and evaporation.
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Effects of oxidation and surface roughness on contact angle
TL;DR: In this paper, a simple, yet fairly accurate method of measuring the static equilibrium contact angle of a solid/liquid interface is presented, based on the principles of a line light source and tilting plate.
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Fouling in enhanced tubes using cooling tower water: Part I: long-term fouling data
Ralph L. Webb,Wei Li +1 more
TL;DR: In this paper, the results of long-term fouling tests for cooling tower water flowing inside enhanced tubes were described. But, the results were taken using 800 ppm calcium hardness water supplied to an operating chiller/cooling tower system.
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A transient micro-convection model of nucleate pool boiling
S. Imam Haider,Ralph L. Webb +1 more
TL;DR: In this paper, a model is developed for predicting the boiling coefficient of nucleate pool on plain surfaces, as a function of bubble dynamics characteristics (nucleation site density, bubble departure diameter and bubble frequency).
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Visualization of pool boiling on enhanced surfaces
Liang-Han Chien,Ralph L. Webb +1 more
TL;DR: In this paper, a high speed camera with 30×-magnification allowed detailed observation of the evaporation process in the tunnels and of the vapor bubbles emerging from the pores.