TEMPERATURE DISTRIBUTION IN THIN WALLED HEAT-EXCHANGERS HAVING NONCIRCULAR FLOW PASSAGES

PDF Version Also Available for Download.

Description

In heat exchangers, in which the walls are heated by intemal heat sources, it is possible for wall temperatures greater than the mean to occur in the corners of noncircular flow Passages. Thus in a square or triangular passage low velocities occur in the corners, and the resulting decrease in the heat transfer coefficient produces higher temperatures in the walls at these locations. A generalized analysis is presented taking into account the variation in the heat transfer coefficient along the surface, by which it is possible to compute local temperatures in the walls of noncircular flow passages in the vicinity ... continued below

Creation Information

Farmer, W.S. October 23, 1951.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Author

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

In heat exchangers, in which the walls are heated by intemal heat sources, it is possible for wall temperatures greater than the mean to occur in the corners of noncircular flow Passages. Thus in a square or triangular passage low velocities occur in the corners, and the resulting decrease in the heat transfer coefficient produces higher temperatures in the walls at these locations. A generalized analysis is presented taking into account the variation in the heat transfer coefficient along the surface, by which it is possible to compute local temperatures in the walls of noncircular flow passages in the vicinity of the corners. Computations have been made for a representative component composed of a honey comb of rectangular passages. The resulting temperature at the hottest point is approximately 125 deg F greater than the unifomn plate temperature. This analysis is based on a 90 deg angle between the plate and retaining plate, and a uniforn source distribution throughout all plates. Had the angle between the primary plate and retaining plate been much less than 90 deg on both sides, then the resulting local temperature rise would be several times the above value. If the primary plate and retaining plate are "dead" at junctions and corners then of course a "hot spot" will not occur at these locations. (auth)

Notes

NTIS

Source

  • Other Information: Decl. with deletions Feb. 19, 1957. Orig. Receipt Date: 31-DEC-60

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Report No.: CF-51-10-178(Del.)
  • Grant Number: None
  • DOI: 10.2172/4224094 | External Link
  • Office of Scientific & Technical Information Report Number: 4224094
  • Archival Resource Key: ark:/67531/metadc1026683

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • October 23, 1951

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

Description Last Updated

  • Oct. 23, 2017, 2:27 p.m.

Usage Statistics

When was this report last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Farmer, W.S. TEMPERATURE DISTRIBUTION IN THIN WALLED HEAT-EXCHANGERS HAVING NONCIRCULAR FLOW PASSAGES, report, October 23, 1951; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc1026683/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.