In this paper, the performance of three high pressure HFC refrigerants: R-32, R-41 OA, and R-41 08, is compared to that of R-22. R-32 has excellent thermophysical properties as compared to R-41 OA, R-41 08 and R-22. However, R-32 is a flammable refrigerant while R-41 OA and R-41 OB are non-flammable. The performance of these refrigerants is investigated in a residential heat pump at the test co...

This paper investigates the effect of filling polystyrene foam beads (EPS) on foaming temperature regulation rigid polyurethane (RPUF) composites and describes change process first 400 s reaction for two systems with high low RPUF. Different contents expandable EPS were used to regulate RPUF reduce internal structural defects composite material caused by excessive which is effectively optimized...

The photochemical deactivation process of HCFC-133a (C2H2F3Cl) was investigated by computing excited-state properties with a number of single-reference methods, including coupled cluster to approximated second order (CC2), algebraic diagrammatic construction to second order (ADC(2)), and time-dependent density functional theory (TDDFT). Excited states calculated with these methods, especially T...