The calculated states as well as the characteristic dome shape of the phase diagram is displayed. Also, try a few super-critical state (say, p=200 MPa, T=300 deg-C), draw constant pressure lines through these states and you would realize how easy it is to calculate a state of any phase composition.Īppears on a pop-up window (your pop-up blocker will not block it). To obtain the critical state, which is the intersection of the f and g lines, use x=0 (f-line) and y=1 (g-line). To calculate a saturated state, specify x (or y) as 0 and 1 for saturated liquid and saturated vapor respectively. Phase Composition Note that the phase composition is evaluated as part of the state. Note the use of the algebraic expression. T1 (60 deg-C) and x1 (note that saturated liquid can be specifiedīy x or y =0 and saturated vapor by x or y=1).
#Thermodynamics calculator si Pc
Navigate to the page and click on the PC (phase-change) model to launch the PC state TESTcalc. PC model is the best model for R-134a, which may exist in different phases under the given conditions.
We select the system state TESTcalc although the flow state TESTcalc (used for flow properties) can be used as well. Solution This problem is about evaluating properties - clearly a state problem. (d) State-4 : isobaric to state-3, saturated liquid (e) State-5 : isobaric to state-1, isenthalpic (constant h) to state-4.
Isentropic to state-1 (c) State-3: isobaric (constant p) to state-2, saturated vapor PC State TESTcalc: Ex 3-1 Evaluate the following states for R-134a and plot
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