An experimental correlation between temperature of an electrically heated copper hearth and flowrate water

Date

4-1996

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Demetrio A Yco, Jr.

Abstract

Evaporating a substance by an electron beam heating source isL one of the most advanced techniques in thin film growth. A stream of electrons is accelerated to obtain temperatures exceeding 3000°C. Temperatures as high as these are enough to cause any reactions between the evaporant and the copper hearth. Thus, a cooling system is needed to make these reactions insignificant. The availability of water makes it a suitable coolant for this system. The purpose of this study is to correlate the temperature of the heated copper hearth and the flowrate of cooling water. A flow-temperature correlating system was designed and built. The flowrate of the water and the temperature of the copper hearth were then observed. The results of the experiment were then arranged, graphed , and analyzed. Analysis of data shows that: (1) there is a linear relationship between the temperature of copper and the reciprocal of the flowrate of cooling water. (2) the temperature gradient of copper from zero flowrate to any flowrate increases at the very fast rate at the start of the flow. As the flowrate increases continuously , the rate of increase of the temperature gradient slows down until no further increase is discernible.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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