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IIR document

Self adaptive refrigerant flow low temperature driven dual lift absorption cycle.

Number: pap. n. 194

Author(s) : GUERRA M.

Summary

A dual lift water ammonia low temperature driven absorption cycle has been developed in which the refrigerant flow self adapts to the evaporator and absorber loads. A 3.4 kW air cooled chiller unit has been fully simulated and a prototype built and tested. The unit was run with hot water at inlet temperatures from 70°C to 95°C and with air temperature ranging from 25°C to 40°C . On the entire range of testing conditions the chiller delivers cooling capacity and runs smooth in transient and stable in steady state. In the current prototype setup ongoing test, at 35°C outdoor ambient temperature, 7°C outlet chilled water, 92°C driving hot water the chiller prototype has a cooling capacity of 3.4 kW with a COP of 0.29 and 360 W power consumption for the fan and the solution pump. At 32°C outdoor ambient temperature, 7°C outlet chilled water, 79°C driving hot water the prototype has a cooling capacity of 2.5 kW with a COP of 0.28 and 285 W power consumption for the fan and the solution pump.

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Pages: 8 p.

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Details

  • Original title: Self adaptive refrigerant flow low temperature driven dual lift absorption cycle.
  • Record ID : 30004416
  • Languages: English
  • Source: 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
  • Publication date: 2012/06/25

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