scholarly journals Characteristics of vapor compression refrigeration system with parallel expansion valves using refrigerant musicool 134

Author(s):  
B C Purnomo ◽  
Muji Setiyo ◽  
Budi Waluyo ◽  
Saifudin ◽  
Noto Widodo
Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 946
Author(s):  
Bartosz Gil ◽  
Anna Szczepanowska ◽  
Sabina Rosiek

In this work, which is related to the current European Parliament Regulation on restrictions affecting refrigeration, four new three-component refrigerants have been proposed; all were created using low Global Warming Potential(GWP) synthetic and natural refrigerants. The considered mixtures consisted of R32, R41, R161, R152a, R1234ze (E), R1234yf, R1243zf, and RE170. These mixtures were theoretically tested with a 10% step in mass fraction using a triangular design. The analysis covered two theoretical cooling cycles at evaporating temperatures of 0 and −30 °C, and a 30 °C constant condensing temperature. The final stage of the work was the determination of the best mixture compositions by thermodynamic and operational parameters. R1234yf–R152a–RE170 with a weight share of 0.1/0.5/0.4 was determined to be the optimal mixture for potentially replacing the existing refrigerants.


2019 ◽  
Vol 15 ◽  
pp. 100531 ◽  
Author(s):  
Santiphap Nakkaew ◽  
Thunyawat Chitipalungsri ◽  
Ho Seon Ahn ◽  
Dong-Wook Jerng ◽  
Lazarus Godson Asirvatham ◽  
...  

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