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Economic upgrading and optimal use of a multi-cell crossflow evaporative water cooling tower through modular performance appraisal.

Author(s) : PRASAD M.

Type of article: Article

Summary

A novel numerical-and-experimental technique is presented for modular performance evaluation of a multi-cell crossflow evaporative water cooling tower. In general, different cell halves undergo a varied level of degradation; packing for all the cell halves need not be replaced simultaneously. It is possible to achieve significant lowering of overall exit cooled water temperature from the total system at a greatly reduced cost by undertaking packing replacement only for some selected cell halves at a given time, beginning with the worst affected cell half and then taking up the immediately better one, and so on. It is also feasible to obtain a lower overall cooled water temperature from the existing tower system, with or without partial upgrading, by passing larger quantities of hot water through such cell halves which are less damaged and a smaller quantity through those which are more deteriorated, thus requiring no extra expenditure. The proposed scheme of modular performance appraisal and the benefits resulting from sequential fill upgrading and that due to selective hot water flow distribution are displayed through an example for a typical cooling tower of single-flow design having 12 cells by considering the deteriorated state of six different fills.

Details

  • Original title: Economic upgrading and optimal use of a multi-cell crossflow evaporative water cooling tower through modular performance appraisal.
  • Record ID : 2004-2204
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 24 - n. 4
  • Publication date: 2004/03

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