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RESEARCH PAPERS

Steady-State Thermal Analysis of a Thermometer Well

[+] Author and Article Information
R. P. Benedict

Westinghouse Electric Corporation, Steam Divisions, Lester, Pa.

J. W. Murdock

Applied Physics Division, Naval Boiler and Turbine Laboratory, Philadelphia Naval Yard, Philadelphia, Pa.

J. Eng. Power 85(3), 235-244 (Jul 01, 1963) (10 pages) doi:10.1115/1.3675265 History: Received October 08, 1962; Online January 10, 2012

Abstract

A generalized thermometer well is analyzed as to temperature-measuring uncertainties. A reliable finite difference approximation to the differential heat balance equation is developed. For those cases where the fluid may be considered transparent to radiation (i.e., for εg ≈ 0), a simplified linearized approximation is given. Whenever conduction effects can be neglected (i.e., for (hc D/k)(L2 /(D2 − d2 )) > 20), a rapid hand-calculation method is indicated. Several examples of graphical approximations are given.

Copyright © 1963 by ASME
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