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.
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Journal ArticleDOI
Nucleate pool boiling data for five refrigerants on plain, integral-fin and enhanced tube geometries
Ralph L. Webb,Christopher Pais +1 more
TL;DR: In this article, the authors presented data for nucleate pool boiling on five different horizontal tube geometries using five refrigerants at two saturation temperatures, and the ability of the Cooper and the Stephan-Abdelsalam correlations to predict the plain tube data was evaluated.
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Heat transfer and friction characteristics of internal helical-rib roughness
TL;DR: In this paper, heat transfer and friction data for single-phase flow in seven 15.54mm inside diameter tubes having internal helical-rib roughness were provided, and two different correlations were employed to predict the Stanton number and friction factor as a function of geometric variables.
Journal ArticleDOI
Friction pressure drop of R-12 in small hydraulic diameter extruded aluminum tubes with and without micro-fins
Chien Yuh Yang,Ralph L. Webb +1 more
TL;DR: In this paper, single-phase liquid and two-phase flow pressure drop were measured for R-12 flowing in both rectangular plain and micro-fin tubes with hydraulic diameters 2.64 and 1.56 mm, respectively.
Journal ArticleDOI
Condensation of R-12 in small hydraulic diameter extruded aluminum tubes with and without micro-fins
Chien Yuh Yang,Ralph L. Webb +1 more
TL;DR: In this article, the authors provided heat transfer data for R-12 condensation and subcooled liquid in small hydraulic diameter, flat extruded aluminum tubes, which contain three internal membranes, separating the flow into four parallel channels.