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Non-absorbable gas control in the absorber/evaporator in an absorption chiller using an immersed plate.

Author(s) : SUZUKI H., ISHIGAMI T., YAMADA M., et al.

Summary

The paper presents a two-dimensional numerical model of vapour flow in the absorber/evaporator in an absorption chiller. An immersed plate was inserted from the top wall in the absorber/evaporator and its horizontal position was changed in three steps while its length was kept constant. The mean concentration of non-absorbable gas ranged from 0 to 10 vol%. An immersed plate insertion was found to cause a flow recirculating region behind it. In such a recirculating region, non-absorbable gas is concentrated. When the immersed plate was located away from the absorber, non-absorbable gas did not penetrate into the absorber and the overall heat transfer remained high even at the mean non-absorbable gas concentration of 10 vol%. It was concluded that the insertion of an immersed plate can control the non-absorbable gas behaviour and that there exists an optimum position for an immersed plate enabling the absorption ability of the absorber to remain high.

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Details

  • Original title: Non-absorbable gas control in the absorber/evaporator in an absorption chiller using an immersed plate.
  • Record ID : 2004-2232
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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