AN EXPERIMENTAL INVESTIGATION OF COOLING OF A LOW PRESSURE, LOW TEMPERATURE AIRSTREAM USING LIQUID AIR INJECTION

Abstract

An investigation was conducted to determine the feasibility of producing a low temperature, uncontaminated airstream by injection of liquid air into a primary airstream. Steady-state data were obtained with primary airflow conditions generally set at total pressures from 2.5 to 5 psia and supply air temperatures ranging from 380 to 540 R. Liquid airflow rates ranged from 0 to 13.5 lb/sec. Temperature drops of the primary airstream up to 85 R were recorded with liquid air-to-primary air ratios up to 0.146. Calculated cooling efficiencies ranged from 75 to 100%. Gas samples obtained in the mixing chamber at locations 10 and 24 ft downstream from the injection station indicated that the gas flow was a homogeneous mixture with the O2 and N2 content of the gas samples dependent upon the proportions injected.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0475197

Entities

People

  • G. R. Lazalier
  • J. M. Sola

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Counter IED
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Temperature
  • Contracts
  • Engines
  • Flow Rate
  • Flowmeters
  • Gas Flow
  • Heat Energy
  • Heat Of Vaporization
  • Heat Transfer
  • Latent Heat
  • Low Temperature
  • Mach Number
  • Measurement
  • Steady State
  • Test Facilities
  • Thermodynamics
  • Turbofan Engines

Readers

  • Combustion and Flow Dynamics.