A Caltech Library Service

Experiments with unconventional crossflow heat exchangers


Ruth, Edward Kenneth (1981) Experiments with unconventional crossflow heat exchangers. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/P6TP-GR40.


These experiments consisted of measurements of pressure losses and heat transfer rates for two unconventional crossflow heat exchanger configurations.

The first type consisted of an arrangement of circular tubes in a sawtooth pattern. Performance of this type did not appear to be an improvement over more conventional heat exchangers.

The second type used exchanger tubes of a special lenticular cross section so spaced as to keep the velocity of the fluid flowing outside the tubes nearly constant in magnitude reducing separation and drag. The lenticular tubes' performance was superior to the conventional types, especially at higher Reynolds numbers.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Rannie, W. Duncan
Thesis Committee:
  • Rannie, W. Duncan (chair)
  • Zukoski, Edward E.
Defense Date:1 July 1980
Record Number:CaltechETD:etd-10042006-110003
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3916
Deposited By: Imported from ETD-db
Deposited On:09 Oct 2006
Last Modified:21 Dec 2019 01:31

Thesis Files

PDF (Ruth_ek_1981.pdf) - Final Version
See Usage Policy.


Repository Staff Only: item control page