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Heat and moisture transfer in desiccant coated rotary energy exchangers. 2. Validation and sensitivity studies.

Author(s) : SIMONSON C. J., BESANT R. W.

Type of article: Article

Summary

Neglecting thermal and moisture storage in the air is shown to result in errors as large as 2.4% in the predicted effectiveness of a rotary energy exchanger at typical wheel speeds. Including the heat of sorption in the model affects the predicted effectiveness only slightly. However, the predicted effectiveness is greatly affected by whether the heat of phase change is assumed to remain in the air or in the matrix. Controlling the energy rate of the energy exchanger by controlling wheel speed may be impractical because the sensitivity of each effectiveness to wheel speed differs with each operating condition. The model is also used to show the importance of the entry length and thermal conductivity on the predicted performance of rotary energy exchangers.

Details

  • Original title: Heat and moisture transfer in desiccant coated rotary energy exchangers. 2. Validation and sensitivity studies.
  • Record ID : 1998-3790
  • Languages: English
  • Source: HVAC&R Research - vol. 3 - n. 4
  • Publication date: 1997/10
  • Document available for consultation in the library of the IIR headquarters only.

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