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RESEARCH PAPERS

Design of a Thermostat for Precise Temperature Control From −190 Deg to +650 Deg C

[+] Author and Article Information
J. Ansari

University of Toronto, Toronto, Ontario, Canada

W. Leidenfrost

Purdue University, Lafayette, Ind.

R. Oldenburger

Automatic Control Center, School of Mechanical Engineering, Purdue University, Lafayette, Ind.

J. Basic Eng 91(2), 168-172 (Jun 01, 1969) (5 pages) doi:10.1115/1.3571053 History: Received December 17, 1968; Online November 03, 2011

Abstract

A proposed apparatus for controlling temperatures from −190 deg to +650 deg with an estimated accuracy of 0.001 deg C is described. The apparatus utilizes helium as the heat transfer medium. The selection of the gain constants of the controller depends upon the system parameters. The hypothetical case of a solid cylindrical block with an integral plus proportional controller is considered, the differential equations are set up, and a graphical scheme is presented for the selection of the controller constants.

Copyright © 1969 by ASME
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