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Investigation of an open-cycle dehumidifier-evaporator-regenerator (DER) absorption chiller for low-grade heat utilisation.

Author(s) : HELLMAN H. M., GROSSMAN G.

Summary

Unlike most closed-cycle systems, which require a heat supply temperature significantly higher than that of the heat sink, the present cycle can operate at extremely small temperature differences between the heat source and sink. It employs ambient air in conjunction with an absorbent solution; the air is dehumidified and employed to produce chilled water in an evaporative cooler and then to regenerate the absorbent. The immediate application of this DER cycle is for cooling and air conditioning, but other applications in industrial heat pumping may be envisaged. A computer simulation of the cycle was conducted using a modular computer code developed for closed-cycle absorption systems in varying cycle configurations and with different working fluids. Some modifications in the code were necessary to adapt it for the simulation of the open cycle.

Details

  • Original title: Investigation of an open-cycle dehumidifier-evaporator-regenerator (DER) absorption chiller for low-grade heat utilisation.
  • Record ID : 1996-2507
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/01
  • Document available for consultation in the library of the IIR headquarters only.

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