Lean flammability limit as a fundamental refrigerant property: Phase 2. Interim technical report, 1 April 1995--30 March 1996

PDF Version Also Available for Download.

Description

The flammability of alternative, non-ozone depleting refrigerants is an issue of growing importance to the air-conditioning and refrigeration industry. Test methods developed decades ago are being stretched to their limits when measuring the combustion behavior of weakly flammable refrigerants. This work is Phase 2 of a three part project to determine the feasibility, accuracy, and applicability of a premixed opposed-flow burner as an alternative means of measuring lean flammability limits. In this work, the Phase 2 burner demonstrates the precision available to the opposed-flow technique for evaluating the lean flammability limit of weak fuels. Using opposed, converging nozzles, two jets ... continued below

Physical Description

Medium: P; Size: 46 p.

Creation Information

Womeldorf, C. & Grosshandler, W. April 30, 1996.

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.

Sponsor

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

The flammability of alternative, non-ozone depleting refrigerants is an issue of growing importance to the air-conditioning and refrigeration industry. Test methods developed decades ago are being stretched to their limits when measuring the combustion behavior of weakly flammable refrigerants. This work is Phase 2 of a three part project to determine the feasibility, accuracy, and applicability of a premixed opposed-flow burner as an alternative means of measuring lean flammability limits. In this work, the Phase 2 burner demonstrates the precision available to the opposed-flow technique for evaluating the lean flammability limit of weak fuels. Using opposed, converging nozzles, two jets support a premixed twin flame at different global strain rates and permit evaluation of the corresponding fuel concentration at the extinction point. Comparisons with published data support that the LFL{sub 0}, a lean flammability limit value defined by the extrapolation of the extinction conditions to zero global strain, yields a consistent value. Using a computer simulation to analyze the uncertainty, the lean flammability limit of refrigerants in dry air is found. Concurrent computational modeling of the combustion of refrigerants in air, individually and in mixtures has been performed with the chemical kinetics code CHEMKIN. Estimates of the impact of the initial conditions (equivalence ratio, fuel composition, temperature, and relative humidity) on the magnitude of the laminar flame speed of a zero strain flame are made.

Physical Description

Medium: P; Size: 46 p.

Notes

OSTI as DE97001639

Source

  • Other Information: PBD: 30 Apr 1996

Language

Item Type

Identifier

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

  • Other: DE97001639
  • Report No.: DOE/CE/23810--68
  • Grant Number: FG02-91CE23810
  • DOI: 10.2172/418452 | External Link
  • Office of Scientific & Technical Information Report Number: 418452
  • Archival Resource Key: ark:/67531/metadc688489

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

  • April 30, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • Nov. 17, 2015, 6:06 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 5

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Womeldorf, C. & Grosshandler, W. Lean flammability limit as a fundamental refrigerant property: Phase 2. Interim technical report, 1 April 1995--30 March 1996, report, April 30, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc688489/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.