The Correlation of Simultaneous Heat and Mass Transfer Experimental Data for Aqueous Lithium Bromide Vertical Falling Film Absorption

[+] Author and Article Information
William A. Miller

The Oak Ridge National Laboratory, 1 Bethel Valley Rd, MS6070, Bldg. 3147, Oak Ridge, TN 37831

Majid Keyhani

Mechanical and Aerospace Engineering and Engineering Science Department, University of Tennessee, Knoxville, TN 37996-2210

J. Sol. Energy Eng 123(1), 30-42 (Dec 01, 2000) (13 pages) doi:10.1115/1.1349550 History: Received December 01, 2000; Revised December 01, 2000
Copyright © 2001 by ASME
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Grahic Jump Location
Thermographic phosphor and coolant temperature profiles were measured along the running length of the falling film
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The mass fraction of the falling film for the present study is compared to the independent data of Burdukov et al. 19 and of Grossman and Alefeld 18
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The absorber load is affected by the mass fraction, the pressure, the coolant temperature and the falling film mass flow rate
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The mass absorbed is affected by the mass fraction, the pressure, the coolant temperature and the falling film mass flow rate
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Overall Nu and Sh numbers were reduced from tests conducted at different pressures, mass fractions, coolant temperatures and falling film mass flow rates
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Nu and Sh numbers were correlated from 0.62 and 0.64 mass fraction LiBr data and account for the effects of absorber pressure and coolant temperature
Grahic Jump Location
A point-by-point review of the error observed in the heat and mass transfer correlations
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Decreasing the viscosity and surface tension improves the agreement between 0.60 mass fraction data and the correlations for the Nu amd the Sh numbers
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The correlation for Nu and Sh numbers are compared to independent data which were reduced using Eq. (4) for the Nu number and Eq. 7 for the Sh number




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