Pressure Enthalpy Diagram for R134a Refrigerant Source of data: NIST Chemistry WebBook accessed Jan 2008NIST Chemistry WebBook accessed Jan 2008 10 9 8 R 134a 7 Pressure Enthalpy Diagram 0.1 1 10 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 520 540 560 580 600 Enthalpy [kJ kg] Pressure [MPa] Produced by E. Hansen and I. Aartun, NTNU 1999. Plotted by: J P M Trusler imperial.ac.uk p h Diagram for R134a Plotted by: J P M Trusler Reference state: h (kJ·kg 1) = 200 and s (kJ·K 1·kg 1) = 1.00 for saturated liquid at T = 0°C. 0.1 1 10 100 100 200 300 400 500 h (kJ·kg 1) p bar T °C s (kJ·K 1·kg 1) v (m3·kg 1) Quality 1.58 1.62 1.66 1.70 0.002 2.34 2.30 2.26 2.22 2.18 2.14 2.10 2.06 2.02 1.98 1.94 1.90 1.86 1.82 Figure 7. Pressure Enthalpy Diagram for HFC 134a (SI Units) 8 Figure 7. Pressure Enthalpy Diagram for HFC 134a (SI Units) a DuPont Fluorochemicals HFC 134a Pressure Enthalpy Diagram (SI Units) Online Calculation Tetrafluorethane R134a Calculation of thermodynamic state variables of Tetrafluorethan R134a in saturation state, boiling curve. Lower limit for calculation: 90 C, 0.015 bar bar upper limit: 100 C, 39 bar. PRESSURE – ENTHALPY DIAGRAM Educypedia PRESSURE – ENTHALPY DIAGRAM SI UNITS TEMPERATURE ºC 134a. PO Box 13, The Heath, Runcorn, Cheshire, WA7 4QX Tele: (01928) 511192 Fax: (01928) 513890 .ineosfluor These tables are constructed from an equation of state for the product which has been derived from experimental information. The resolution of the values Refrigeration Diagram on Pressure Enthalpy Diagram for the ... A sample R 134a diagram is shown below, with a sample refrigeration cycle, identifying (Step 1) Evaporator, (Step 2) pressor, (Step 3) Condenser and (Step 4) Expansion Device. Back to Mechanical P.E. Exam Topics The Pressure Enthalpy Chart The pressure enthalpy chart, as shown in Fig. 2, displays all the pertinent properties for a given refrigerant (in this example R22). The bubble to the left is the portion of the diagram where the refrigerant is in the saturated condition. The blue line on the left of the bubble represents the 100% saturated liquid line, Appendix B Log P h diagrams for refrigerants SWEP Appendix B Log P h diagrams for refrigerants Experts in brazed plate heat exchangers SWEP is a world leading supplier of brazed plate heat exchangers for HVAC and industrial applications. Case 1 The Basics of Refrigeration Cycle P H Diagram Analysis This case is to review the practical use of the Pressure Enthalpy (P H) diagram and the thermodynamic analysis of the refrigeration cycle using the P H diagram; the Refrigerant Flow Diagram corresponding to the P H Diagram. This case is also to evaluate various cycles such as with penalties, economizing for a The Pressure Enthalpy Chart refrigeration system can be plotted on the P H diagram. Lets assume our system is operating at a 20ºF evaporator and 100ºF condensing. The saturated vapor entering the compressor suction would be at 20ºF, illustrated by point #1 in Fig. 3. The vapor is com pressed, following the constant entropy line to the pressure cor 410A DuPont™ Suva Chemours ®DuPont™ Suva 410A Pressure Enthalpy Diagram (Engineering Units). (4 05) RWJ291 Printed in U.S.A. Reorder No.: K 05718 Copyright © 2005 DuPont or its affiliates. How to read P h Chart explained with Numerical this lecture will explain how to use P H chart for calculating COP, Heat rejected by Condenser, Refrigerating effect, compressor power.

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