Heat pumping processes and systems Working fluids in Refrigeration and Heat Pump Systems Wednesday July 2nd 2014 Trygve M.Eikevik Professor Norwegian University of Science and Technology(NTNU) E-mails:trygve.m.eikevik@ntnu.no http://folk.ntnu.no/tme 髓 ONTNU ②SINTEF Topics of the lectures General about the refrigerants-history ·Working fluids HFC CFO -R404A 3 HeFC -R407C HC O2 -R410A -R134a -Ammonia -Hydrocarbons (example.propane) -Carbon dioxide(CO2) Choice of working fluid Refrigeration process with different working fluids Practical qualities for different working fluids ONTNU 2 ⑤SINTEF1 Heat pumping processes and systems Working fluids in Refrigeration and Heat Pump Systems Wednesday July 2nd 2014 Trygve M. Eikevik Professor Norwegian University of Science and Technology (NTNU) E-mails: trygve.m.eikevik@ntnu.no http://folk.ntnu.no/tme 2 Topics of the lectures • General about the refrigerants - history • Working fluids – R404A – R407C – R410A – R134a – Ammonia – Hydrocarbons (example. propane) – Carbon dioxide (CO2 ) • Choice of working fluid • Refrigeration process with different working fluids • Practical qualities for different working fluids HFC NH3 HC CO2 CFC HCFC