MAE_2381_Lab_07

MAE_2381_Lab_07 - The University of Texas at Arlington...

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The University of Texas at Arlington Department of Mechanical and Aerospace Engineering MAE 2381.002: Experimental Methods and Measurement Lab Heat Transfer – Forced Convection (Impinging Hot Jet) By Jon Rawls Measurements Laboratory: 07 Experiment Performed: 13 September 2007 Written Report Due: 20 September 2007 Team Members: Nathan Hermes Jeremiah Manduku Jon Rawls Michael Russel
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The University of Texas at Arlington Department of Mechanical and Aerospace Engineering MAE 2381.002: Experimental Methods and Measurement Lab Heat Transfer – Forced Convection (Impinging Hot Jet) By Jon Rawls 16 September 2007 Abstract- Temperature, despite being one of the most common considerations for engineering design, is a very difficult variable to measure. The objective of this lab was to employ thermocouples to get an accurate reading, and in the process learn how to use the thermocouples themselves. Heat-flux sensors, which measure the flow of energy or heat through a specific point, were also introduced in the interest of evaluating transport- phenomena. Both sensors were read using computer-based data acquisition systems, emphasizing the importance of technology in modern day engineering. A linear relationship was discovered between the temperature/heat-flux sensors and the distance from the heat source the sensors were placed.
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TABLE OF CONTENTS 1. Introduction……………………………………………………………………1 2. Analysis……………………………………………………………………. ..... 1 3. Experimental Program………………………………………………………. ...1 4. Results and Discussion……………. .................................................................. 2 5. Conclusions and Recommendations…………………………………………. ..4 6. References……………………. .......................................................................... 4 7. Appendix……………………………………………………………………….4 LISTING OF NOMENCLATURE 1. T Temperature, K 2. q’’ Heat-Flux, W/m 2 3. x Dimension, mm 4. ε Standard Deviation 5. avg Average
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1. INTRODUCTION Temperature is one of the most commonly used variables in engineering design. Regardless of what the product may actually be it is always important to consider its working environment. For instance, if the design in question is to be used at extremely high temperatures, a cobalt alloy or ceramic material might be the best for the application. Despite the fact that temperature is so commonly used, it’ can be one of the most difficult properties to measure, and often comes with significant error. To overcome the difficulties with the gauging temperature, one might employ the use an electric circuit called a thermocouple. A thermocouple consists of two electrical
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This lab report was uploaded on 04/15/2008 for the course MAE 2381 taught by Professor Puniker during the Fall '08 term at UT Arlington.

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MAE_2381_Lab_07 - The University of Texas at Arlington...

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