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Title: Heat transfer studies. Quarterly report

Abstract

The experiments on determination of the wavelength corresponding to the equality of the refractive indices and how this varies with temperature have been completed. This was accomplished using the calibration setup of a 2-inch-long test cell filled with 2 mm diameter soda-lime glass beads. Some good images result, but these are not very clear. Therefore, a 1-inch long test cell has now been built. The modified test cell is shown. A 30-gauge type K thermocouple is placed at the center inside the test cell. A model 450 AET Omega thermocouple thermometer is used to indicate the temperature from the thermocouple. A polyurethane foam insulator covered the test cell circular wall to approximate an adiabatic condition. The organic chemical liquid and glass beads are heated up by the mica band heater. A variable transformer is used to the control power to the heater and, thus, the temperature in the cell. The temperature is slowly increased from ambient to try to maintain a generally homogeneous temperature inside the cell. If the indices of refraction of the glass beads and the organic liquid are the same, the image of glass beads then can be found. Chlorobenzene (C{sub 6}H{sub 5}Cl) with a refractive indexmore » of about 1.52 at 25{degrees}C (boiling point of 131.6{degrees}C), has been used as the organic chemical liquid. A 5 W argon-ion laser has been used as the light source to visualize the image generated by the Christiansen effect. Two optical grade prisms are used to separate the three wavelengths (green, teal, and blue) of the beam. 80 {mu}m and 200 {mu}m apertures are used to select a single wavelength portion of the beam (either 488 nm blue or 514.5 nm green).« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Nevada Univ., Las Vegas, NV (United States). Heat Transfer Lab.
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10184093
Report Number(s):
DOE/NV/10872-T133
ON: DE94019232; TRN: 94:008598
DOE Contract Number:  
FC08-90NV10872
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 20 Jul 1994
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; HEAT TRANSFER; EXPERIMENTAL DATA; POROUS MATERIALS; FLUID FLOW; 420400; HEAT TRANSFER AND FLUID FLOW

Citation Formats

Boehm, R., Chen, Y., Izzeldin, A., Kuharic, W., and Manuel, D. Heat transfer studies. Quarterly report. United States: N. p., 1994. Web.
Boehm, R., Chen, Y., Izzeldin, A., Kuharic, W., & Manuel, D. Heat transfer studies. Quarterly report. United States.
Boehm, R., Chen, Y., Izzeldin, A., Kuharic, W., and Manuel, D. Wed . "Heat transfer studies. Quarterly report". United States.
@article{osti_10184093,
title = {Heat transfer studies. Quarterly report},
author = {Boehm, R. and Chen, Y. and Izzeldin, A. and Kuharic, W. and Manuel, D.},
abstractNote = {The experiments on determination of the wavelength corresponding to the equality of the refractive indices and how this varies with temperature have been completed. This was accomplished using the calibration setup of a 2-inch-long test cell filled with 2 mm diameter soda-lime glass beads. Some good images result, but these are not very clear. Therefore, a 1-inch long test cell has now been built. The modified test cell is shown. A 30-gauge type K thermocouple is placed at the center inside the test cell. A model 450 AET Omega thermocouple thermometer is used to indicate the temperature from the thermocouple. A polyurethane foam insulator covered the test cell circular wall to approximate an adiabatic condition. The organic chemical liquid and glass beads are heated up by the mica band heater. A variable transformer is used to the control power to the heater and, thus, the temperature in the cell. The temperature is slowly increased from ambient to try to maintain a generally homogeneous temperature inside the cell. If the indices of refraction of the glass beads and the organic liquid are the same, the image of glass beads then can be found. Chlorobenzene (C{sub 6}H{sub 5}Cl) with a refractive index of about 1.52 at 25{degrees}C (boiling point of 131.6{degrees}C), has been used as the organic chemical liquid. A 5 W argon-ion laser has been used as the light source to visualize the image generated by the Christiansen effect. Two optical grade prisms are used to separate the three wavelengths (green, teal, and blue) of the beam. 80 {mu}m and 200 {mu}m apertures are used to select a single wavelength portion of the beam (either 488 nm blue or 514.5 nm green).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 20 00:00:00 EDT 1994},
month = {Wed Jul 20 00:00:00 EDT 1994}
}

Technical Report:
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