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Development of a procedure for the assessment of the performance of desiccant-evaporative cooling systems.

Author(s) : ABDALLAH N. ben, KEMP S. L., HOSATTE S., et al.

Summary

Previous work by the authors developed desiccant-evaporative and evaporative air cooling algorithms showing that for a humid cooling season, represented by Ottawa, Canada, sufficient cooling capacity is available to maintain 23 °C and 70% relative humidity for most of the cooling season. New work is presented that expands on the previous in refining the desiccant-evaporative and evaporative cooling system models. Furthermore, complete energy and economic analyses are presented. The energy consumption comes from thermal energy for the desiccant material regeneration and electricity for the fan operation. Evaporative cooling consumes also a lot of water. The capital and operating costs are calculated and compared to those of a conventional packaged rooftop direct expansion cooling system, in different cases. In drier climates, represented in the study by Calgary, Canada, evaporative cooling only is capable of meeting the building cooling load at significant energy and cost savings. CO2 emissions and operating costs are discussed as well as decreasing the cost of desiccant wheels.

Details

  • Original title: Development of a procedure for the assessment of the performance of desiccant-evaporative cooling systems.
  • Record ID : 2000-2899
  • Languages: English
  • Source: Proceedings of the International Sorption Heat Pump Conference.
  • Publication date: 1999/03/24
  • Document available for consultation in the library of the IIR headquarters only.

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