No description available.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 100-101). Also available via the Internet.

No description available.

No description available.

Mémoire (M.Eng.)--Université du Québec à Chicoutimi, 2001. / Document électronique également accessible en format PDF. CaQCU

No description available.

The topic of this thesis is to discuss an investigation made for a fluid velocity measuring device. The OSU thermal hydraulic testing facility is interested in using a small probe to measure fluid velocities in the annular region of a model nuclear reactor vessel. A heater with a thermocouple embedded into the center of the heated region was considered for this application. The philosophy of using such a device is as follows. The temperature of the heater would be monitored closely. Power fed to the heater would be modulated to keep the temperature of the heater constant. The flow of water passing across the heater would draw more or less heat from the heater. The power used can then be related directly to the velocity of the water. Data for this type of experiment was taken in the summer of 1992. A mathematical model to describe the velocity probe behavior was developed to examine this type of application in different situations. The data was used to test the adequacy of the model. Analysis of the experimental data show this system is good for measuring steady state systems but is sluggish during large changes in system flow velocity. Results from the numerical model showed that it is has good results predicting steady state data but exhibits difficulty in reproducing hysteresis effects. / Graduation date: 1994

Boiling is the most efficient form of heat transfer. Thermo-fluidic transport mechanisms at different length and time scales govern the nature of boiling. This study was conducted to enhance the understanding of the surface temperature variations and fluctuations during boiling. Microfabricated thin film thermocouples were used in this study. The main aim of this study was to develop a repeatable procedure for fabrication of thin film thermocouples and to test them by measuring surface temperatures during various boiling regimes. Since thin film thermocouples are known to provide reliable measurements at very fast response rates, they were selected for this study. Small temperature fluctuations at high sampling rates were studied in boiling experiments conducted using PF-5060 as the boiling medium. An experimental apparatus was fabricated for conducting these experiments and it contained a viewing chamber whichblock for sensing the temperature during boiling on its surface. The small size of these thermocouples was another big advantage as they were expected to cause minimal interference to the temperature distribution and the transport phenomenon during boiling. This thesis reports the design evolution of the thermocouples according to the need of packaging and describes the fabrication process with sufficient detail so that it can be easily reproduced given the same facilities and environment. The results of testing show that they can be used for monitoring and analyzing surface temperature variations and fluctuations during various boiling regimes with better temporal resolution. housed the copper block used for providing the heat for boiling. The substrate with thin film thermocouples was placed on top of this copper block for sensing the temperature during boiling on its surface. The small size of these thermocouples was another big advantage as they were expected to cause minimal interference to the temperature distribution and the transport phenomenon during boiling. This thesis reports the design evolution of the thermocouples according to the need of packaging and describes the fabrication process with sufficient detail so that it can be easily reproduced given the same facilities and environment. The results of testing show that they can be used for monitoring and analyzing surface temperature variations and fluctuations during various boiling regimes with better temporal resolution.

Thesis (M.S.)--State University of New York at Binghamton, Department or Electrical and Computer Engineering, 2005. / Includes bibliographical references (p. 37).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1957. / Typescript. Abstracted in Dissertation abstracts, v. 17 (1957) no. 8, p. 1724-1725. Vita. eContent provider-neutral record in process. Description based on print version record.