Share

Experimental evaluation of the internal heat exchanger in a transcritical CO2 refrigeration plant.

Author(s) : SÁNCHEZ D., LLOPIS R., CABELLO R., et al.

Summary

This work analyses, from an experimental approach, the internal heat exchanger (IHX) effect on a CO2 refrigeration plant operating in transcritical conditions. The analysis is based on the plant's performance comparison when operating with and without IHX under similar working conditions. A number of 60 experimental tests distributed at two evaporating levels (-10 and -15ºC), at two gas cooler outlet temperatures each (31 and 34ºC) and for a wide range of gas cooler pressures (74.4 to 105.9 bar) were performed. The first part of the paper analyses the thermal effectiveness of the IHX for the different operating conditions and presents a relation for its effectiveness estimation. The second part focuses on the influence the IHX will have on the energetic performance of the plant. The results show a maximum increment on the cooling capacity of 10% and on COP of 11% when this element is used. Moreover, an increment up to 12ºC in compressor discharge temperature has been measured when working at -15ºC of evaporating temperature.

Available documents

Format PDF

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Experimental evaluation of the internal heat exchanger in a transcritical CO2 refrigeration plant.
  • Record ID : 2011-0086
  • Languages: English
  • Source: IIR/Eurotherm sustainable refrigeration and heat pump technology conference. Proceedings of the Eurotherm Seminar No. 88, Stockholm, Sweden, June 13-16, 2010.
  • Publication date: 2010/06/13

Links


See other articles from the proceedings (49)
See the conference proceedings

Indexing