Document Type
Thesis
Date of Award
6-30-1963
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering
First Advisor
Jerome J. Salamone
Second Advisor
Joseph Joffe
Third Advisor
George C. Keeffe
Abstract
The purpose of this investigation was to design and construct a device to measure the thermal conductivity of viscous fluids. The thermal conductivity data obtained with this device will be used in later work on predicting film coefficients of heat transfer to non-Newtonian fluids.
A cell of the concentric cylinder type was fabricated. Main features of the cell are: two concentric bronze cylinders separated by a 1/8 inch annular space, a central water capable of producing a 10° C temperature gradient in the annular space, and two guard heaters on individual rheostats to control the end looses. The temperatures are measured by calibrated thermocouples and the heat flux by measuring the heat flux by measuring the electrical input to the center heater. All electrical potentials are measured with Leeds and Northrup k-3 potentiometer.
The cell has two limitations:
1) The fluids measured must have a viscosity greater than 25 centipose.
2) The temperature gradient in the annular space must not exceed 10°C.
The probable error in the measured conductivity was calculated to be ±5.0%. It. A "known" liquid was tested, giving an average error of ±4.7%.
Recommended Citation
Hagedorn, Donald William, "The design and fabrication of a cell to measure the thermal conductivity of viscous fluids" (1963). Theses. 2805.
https://digitalcommons.njit.edu/theses/2805
