Air-side data interpretation and performance analysis for heat exchangers with simultaneous heat and mass transfer: Wet and frosted surfaces

2005 ◽  
Vol 48 (25-26) ◽  
pp. 5089-5102 ◽  
Author(s):  
Yanping Xia ◽  
Anthony M. Jacobi
Keyword(s):  
Mass Transfer ◽  
Performance Analysis ◽  
Heat And Mass Transfer ◽  
Heat Exchangers ◽  
Data Interpretation ◽  
And Performance ◽  
Simultaneous Heat

Sensible and Latent Heat Transfer in Cross-Counterflow Gas-To-Gas Heat Exchangers

1989 ◽  
Vol 111 (1) ◽  
pp. 173-177 ◽  
Author(s):  
R. B. Holmberg
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Heat Exchangers ◽  
Air Conditioning ◽  
Absolute Humidity ◽  
Transfer Equations ◽  
Difference Type ◽  
Air Conditioning Systems ◽  
Simultaneous Heat ◽  
Steady State Performance

Simultaneous heat and mass transfer during condensation in cross-counterflow gas-to-gas heat exchangers has been analyzed. The coupled heat and mass transfer equations are derived for boundary-layer controlled heat and mass transfer and include longitudinal heat conduction in the exchanger wall. A numerical method of the finite-difference type is applied to the steady-state performance. Temperature and absolute humidity distributions are calculated for exchanger parameters that are typical in air conditioning systems. Temperature and humidity efficiencies together with frosting limits are evaluated for different inlet air conditions.

Simultaneous heat and mass transfer during evaporation from a film of liquid into the turbulent gas

1982 ◽  
Vol 47 (3) ◽  
pp. 766-775 ◽  
Author(s):  
Václav Kolář ◽  
Jan Červenka
Keyword(s):  
Experimental Data ◽  
Mass Transfer ◽  
Liquid Film ◽  
Heat And Mass Transfer ◽  
Driving Forces ◽  
Proper Definition ◽  
Definition Of ◽  
Simultaneous Heat ◽  
Theory And Experiment

The paper presents results obtained by processing a series of published experimental data on heat and mass transfer during evaporation of pure liquids from the free board of a liquid film into the turbulent gas phone. The data has been processed on the basis of the earlier theory of mechanism of heat and mass transfer. In spite of the fact that this process exhibits a strong Stefan's flow, the results indicate that with a proper definition of the driving forces the agreement between theory and experiment is very good.

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