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A simple analytical model for the design of vertical tube absorbers.

Author(s) : PATNAIK V., PEREZ BLANCO H., RYAN W. A.

Summary

The absorption of water vapour in aqueous solutions of lithium bromide was modelled for a falling-film, vertical-tube absorber. The model is based on the solution of three ordinary differential equations to calculate axial solution concentration and temperature distributions and coolant temperature distribution. Under certain conditions, the numerical solution exhibited instabilities in the entrance region of the absorber tube, which were corrected by the introduction of a dampening factor incorporating relevant thermophysical properties. The usefulness of the model for generating absorber performance charts was demonstrated.

Details

  • Original title: A simple analytical model for the design of vertical tube absorbers.
  • Record ID : 1994-3482
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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