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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Journal ArticleDOI
Effect of Hydraulic Diameter on Condensation of R-134A in Flat, Extruded Aluminum Tubes
Ralph L. Webb,Kemal Ermis +1 more
Journal ArticleDOI
A Predictive Model for Condensation in Small Hydraulic Diameter Tubes Having Axial Micro-Fins
Chien Yuh Yang,Ralph L. Webb +1 more
TL;DR: In this paper, a semi-empirical model is proposed to predict the condensation coefficient inside small hydraulic diameter extruded aluminum tubes having micro-grooves, and the model accounts for the effects of vapor shear and surface tension forces.
Journal ArticleDOI
Falling water film evaporation on newly-designed enhanced tube bundles
TL;DR: In this paper, an experimental study on falling film evaporation of water on 6-row horizontal enhanced tube bundles in a vacuum condition is presented, and the results show that tubes with enhanced inner surface provide better heat transfer performance.
Journal ArticleDOI
Advanced micro-fin tubes for evaporation
TL;DR: In this paper, the authors used R-22 evaporation data for new micro-fin geometries applied to the inner surface of 15.88 mm outside diameter tubes.
Journal ArticleDOI
Fouling in enhanced tubes using cooling tower water: Part II: combined particulate and precipitation fouling
Wei Li,Ralph L. Webb +1 more
TL;DR: In this article, a family of seven internally helically ridged tubes, which have different ridge heights, helix angles, and a number of ridge starts, were compared to accelerated particulate fouling data.