ReplacesR-22, R-404A Physical Properties PropertyValue Chemical Notation26% R-32 / 26% R-125 / 21% R-134a / 7% R-1234ze / 20% R-1234yf Critical Temperature (°C)83.7 Critical Pressure (bar)46.6 Liquid Density (kg/m³) 0°C1192.5 ...
第37卷 第5期 制冷 学报 Vol. 37,No. 5 2016年10 月 Journal of Refrigeration October,2016 文章编号:0253-4339(2016)05-0026-07 doi:103969/ jissn0253-4339201605026 R134a汽车空调回热系统热力性能参数的优化分析 1 1 2 岳镇宇 陈焕新 钟昌 (1华中科技大学能源与动力工程学院 武汉 430074;2 东风贝洱热...
2. R1234yf Ejector Design 2.1. The Ejector Refrigeration System Figure 1a shows the diagram of the ejector-based refrigeration system, which mainly includes the generator, ejector, condenser, throttling valve, evaporator and pump. The primary fluid with a high temperature and pressure from the gene...
Moreover, when the evaporation temperature is close to the critical temperature, the change in temperature causes a drastic change in pressure, thus further limiting the range of subcritical cycles. In this work, the thermodynamic characteristics of R1234yf/R236ea zeotropic mixtures for various heat...
Refrigerant Pressure Temperature Charts View our informative Refrigerant PT Charts down below! R-513A XP10 Refrigerant PT Chart One of the very first steps when it comes to diagnosing a home air conditioner, refrigerator, a...Learn More > ...
p Pressure (Pa) P Cross-sectional perimeter of fin (m) pr Reduced pressure (–) q Heat flux (W/m2) Qdis Heat dissipation (W) Qeff Effective heating power (W) r Radius (m) Re Reynolds number t Temperature (°C) tw Inner wall temperature (°C) tw,o Outer wall temperature (°C)...
Refrigerant inlet pressure pin = 1.09–7.5 MPa (saturation temperature tsat = 42.6–45.5 (°C)). Figure 2 shows a view of the measurement section, a chart of which is shown in Figure 3. Figure 2. View of the channels for heat-transfer testing during refrigerant condensation in pipe minich...
Figure 2. Refrigerants pressure–enthalpy comparison diagram. Ho et al. [16] indicated that after the working fluid of 280USRT single-stage centrifugal compressor was changed from R-134a refrigerant to R-1234yf refrigerant and R-513A refrigerant, in the full load condition, the isentropic effic...
Temperature-entropy (T-s) diagram: (a) subcritical ORC and (b) transcritical ORC. Similar to the SCORC, the TCORC consists of a pump, expander, evaporator and condenser. The working fluid is now compressed directly to supercritical pressure and heated to a supercritical state, effectively ...