Journal Name:
- International Journal of Science and Engineering Investigations
| Author Name | University of Author |
|---|---|
Abstract (2. Language):
The objective of this paper is to introduce
correlations for the Nusselt (heat transfer) and Sherwood (mass
transfer) Numbers for a falling film of Li/Br solution over a
single horizontal heated tube used in generator of absorption
chillers. The analysis is based on laminar flow of Li/Br
solution on a horizontal single tube having constant tube wall
temperature. The effect of boiling has been ignored and free
surface of falling film Li/Br solution is assumed to be
saturated. The role of liquid impingement on the top of tube
has been considered.
The correlations are derived from an extensive numerical
code based on finite difference scheme. The Nusselt and
Sherwood Number for Li/Br solution falling film over the
heated tube are obtained as a function of Prandtl Number,
Schmidt number and Tube geometry
The results showed that the Sherwood number is linearly
proportion to Re number and is proportion to inverse of
Dimensionless diameter of tube. Also the Nusselt Number is
increase with increasing Re number and is independent of
Schmidt number of Li/Br solution. A comparison of the
correlations with existing experimental and analytical results is
presented and verifies the validation of the present model.
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