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An advanced GAX cycle for waste heat recovery: WGAX cycle.

Author(s) : KANG Y. T., AKISAWA A., KASHIWAGI T.

Type of article: Article

Summary

The objectives of the paper are to develop an advanced generator absorber heat exchanger cycle (WGAX) to reduce the generator exit temperature as low as possible using waste heat sources, and to compare it with the standard GAX cycle (SGAX). The paper performed parametric analysis to study the effects of the waste heat source temperature and the outlet temperature of a gas fired desorber (GFD), Tg, on the cycle performance. Three different WGAX cycles were compared from the viewpoint of performance improvement. It was found that the effect of the waste heat source temperature on coefficient of performance (COPs) was negligible for a given GFD outlet temperature in the WGAX cycles. The GFD outlet temperature could be reduced down to 172 °C with a higher COP of WGAX cycle than the COP of the SGAX cycle. Therefore, the corrosion problem in the SGAX cycle at a higher Tg than 200 °C will be solved by adopting the WGAX cycles with a comparable COP.

Details

  • Original title: An advanced GAX cycle for waste heat recovery: WGAX cycle.
  • Record ID : 2001-0143
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 19 - n. 9
  • Publication date: 1999/09

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