scholarly journals Design of Self-Tuning SISO Partial-Form Model-Free Adaptive Controller for Vapor-Compression Refrigeration System

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 125771-125782 ◽  
Author(s):  
Chen Chen ◽  
Jiangang Lu
Keyword(s):  
Adaptive Controller ◽  
Vapor Compression ◽  
Refrigeration System ◽  
Model Free ◽  
Self Tuning ◽  
Form Model ◽  
Vapor Compression Refrigeration ◽  
Partial Form

scholarly journals New HFC/HFO Blends as Refrigerants for the Vapor-Compression Refrigeration System (VCRS)

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 946
Author(s):  
Bartosz Gil ◽  
Anna Szczepanowska ◽  
Sabina Rosiek
Keyword(s):  
Global Warming ◽  
Global Warming Potential ◽  
Mass Fraction ◽  
Vapor Compression ◽  
Refrigeration System ◽  
Operational Parameters ◽  
Vapor Compression Refrigeration ◽  
Low Global Warming Potential ◽  
Triangular Design

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.

scholarly journals Application of the heat pipe to enhance the performance of the vapor compression refrigeration system

2019 ◽  
Vol 15 ◽  
pp. 100531 ◽  
Author(s):  
Santiphap Nakkaew ◽  
Thunyawat Chitipalungsri ◽  
Ho Seon Ahn ◽  
Dong-Wook Jerng ◽  
Lazarus Godson Asirvatham ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Vapor Compression ◽  
Refrigeration System ◽  
Vapor Compression Refrigeration
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