Share

IIR document

Investigation of CO2 refrigeration system and thermal energy storage for passenger ships.

Number: 0035

Author(s) : ANDERSEN H., SAEED M. Z., HAFNER A., GABRIELII C.

Summary

As dominant synthetic refrigerants are increasingly regulated, natural refrigerants have been resurrected as working fluids. Like all other sectors, the cruise industry must adapt to reduce GHG emissions. More emphasis has been given to natural working fluids, such as water, ammonia, hydrocarbons, and carbon dioxide, than new synthetic refrigerants. Among the natural refrigerants, CO2 refrigerant is the only non-toxic and non-flammable and offers compact units suited for cruise ships. Cruise ships utilise refrigeration systems for air-conditioning and to preserve provision. The performance of two CO2 refrigeration systems employed for air conditioning and provision chilling and freezing aboard a medium-sized cruise ship is simulated. Furthermore, how cold thermal energy storage (CTES) can be utilised to supply the cooling demand of a two-hour port stay has been investigated. Three reference cases with different boundary conditions are defined and referred to as warm-, medium, and cold cases. Respectively for the cases, it has been found that the maximum cooling COP of an AC system is about 2.89, 4.19, and 5.99. Furthermore, for the provision system, it is 2.33, 2.98, and 3.54, respectively. Lastly, the CTES must contain 21163 kg of water as phase change material and a total volume of 38.0 m3.

Available documents

Format PDF

Pages: 8

Available

  • Public price

    20 €

  • Member price*

    Free

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

Details

  • Original title: Investigation of CO2 refrigeration system and thermal energy storage for passenger ships.
  • Record ID : 30030994
  • Languages: English
  • Subject: Technology
  • Source: 10th IIR Conference on Ammonia and CO2 Refrigeration Technologies.
  • Publication date: 2023/04/27
  • DOI: http://dx.doi.org/10.18462/iir.nh3-co2.2023.0035

Links


See other articles from the proceedings (38)
See the conference proceedings

Indexing