Study on Energy Efficiency of a Low Temperature Refrigeration System
Based on conservation of mass, total mass balance equation and component mass balance equation, mathematical models of thermodynamic for the auto cascade refrigeration cycle are established. Thermophysical properties in solving the governing equation are called from the NIST REFPROP7.0. Thermodynamic properties of the auto cascade refrigeration cycle using binary mixtures, namely, R170/R290, R23/R227ea, R116/R134a, R23/R134a, R170/R600a, R170/R600 and R170/R152a as refrigerants is evaluated. R170/R600a is selected for the low temperature refrigeration system, and the influences of cycle mole fraction, compression ratio and evaporating pressure on the cycle performance are analysed.
Dongye Sun, Wen-Pei Sung and Ran Chen
L. Wang et al., "Study on Energy Efficiency of a Low Temperature Refrigeration System", Applied Mechanics and Materials, Vols. 71-78, pp. 292-295, 2011