Determination of the Field of Heat and Mass Exchange during Vaporization of a Liquid into a Counterflow of Gas

Abstract

Heat and mass transfer studies between spray atomized (at pressures 2 to 15 bars) liquids and air flowing in the opposite direction at 2 to 15 m/s yielded an average molecular coefficient of heat transfer between the liquid droplets and the air given as Re(L) = L(f)v(0)/v(g), where Re equals Reynolds number, L(f) equals length of atomized liquid envelope, v(0) equals velocity of liquid droplet leaving the nozzle, and v(g) equals kinematic gas viscosity. An equation was developed for calculating L(f). In the recirculation spray drying of solids the L(f) depends to a large extent on the liquid rate.

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Document Details

Document Type
Technical Report
Publication Date
Oct 27, 1972
Accession Number
AD0751503

Entities

People

  • A. A. Dolinskii
  • G. P. Prikhodchenko

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Coefficients
  • Diameters
  • Differential Equations
  • Equations
  • Equations Of Motion
  • Evaporation
  • Foreign Technology
  • Heat Balance
  • Heat Energy
  • Heat Transfer
  • Machine Translation
  • Mass Transfer
  • Reynolds Number
  • Separators
  • Vaporization

Fields of Study

  • Chemistry

Readers

  • Combustion and Flow Dynamics.