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@article{153396,
        author = {Afzal jawaid and Nitin Jain},
        title = {Optimal design of low temperature (cascade) refrigeration system },
        journal = {International Journal of Innovative Research in Technology},
        year = {},
        volume = {8},
        number = {7},
        pages = {37-41},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=153396},
        abstract = {Ammonia/CO2 mixture is presently considered to be the best for cascade refrigeration up to 216.58ºK. However to approach temperatures lower than 216.58ºK the mixture of CO2 with other refrigerants are required. The aim of present work was to study the possibility of using carbon dioxide mixtures in those applications where temperatures below triple  point  (216.58  K)  are  needed.  The  blends  considered  for  analysis  purpose  are R744/R125, R744/R41, R744/R32, and R744/R23. The analysis of cascade refrigeration cycle  has  been  carried  out  with  the  help  of  a  computer  program  developed  using Engineering  Equation  Solver  (EES).  The composition  of  CO2   is  varied  from  a  mole fraction of 0.1 to 0.8 along with R23, R32, R41 and R125. The mixtures properties of the investigated blends (R744/R125, R744/R41, R744/R32, and R744/R23) were calculated by Ref  Prop  7.0  and  used  in  EES  program.},
        keywords = {},
        month = {},
        }