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T

WHAT IS PHICALC 

•  a tool to generate and visualize theproperties ( monophasic, diphasicmix of fluids, special fluids)

•  fully integrated into native Matlab/SSimscape environment

•  extendable and customizable sinc

be added.

•  allows to be used alone or embeddfluid libraries for air conditioning, pindustrial energetic plant.

GENERATION 

Highlights:

•  The init ial step is to get the basic tthermal fluid from the reference so

calculation (NIST, EES, JANAF, B

Example of table generation

Fluid Properties

2014, Sherpa Engineering

φCalc

hermodynamic functions & tabpre-processor

for Matlab, Simulink & S

fluid,ideal gazes,

imulink &

any fluid can

ed in thermalwer plant,

bles ofrces or by

oks, ...).

Functions or tables gener

From the basic data, we g

thermodynamic required fFluids properties are avand as tabulation format.

For example for diphasic

independent variables thaothers properties (ALL)

ph, pu, pv, ps, hs, pt or px

example of function with i

ALL= du (fluid, P0, H0)

les & diagrams

imscape

tion

enerate all the

nctions or tablesilable both as dll functions

luid, there are two

t al ow to compute all

,du, …

dependent variables p & h

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GUI FOR DIAGRAM GENERATI

The objective is to draw all fluid propertgive the user the potential to define itsdiagram, that can be exported in Matlasuperpose it with the thermodynamic c

SELECTION : 1 POINT COMPUTATIO

This GUI allows computing thermal flui

The type of the fluid can be a gas or liqphase, two-phase, moist gas or gas mi

It is possible to calculate one point orseveral combinations of points.

SELECTION :THERMAL  FLUID PR

“Fluid properties” has been selected on thpopup menu” in the general panel. The G

the right side, iso lines for one chosen prselected fluid.

Functionalities:-Real-time plotting, when settings have b-Automatic and manual custom selectionproperties and number of abscissa point t

2014, Sherpa Engineering

ON

ies and topecific /Simulink tocle. 

s properties

uid, oneture.

a mapping for

PERTIES 

e “processingUI displays, on

perty of the

en changedfor iso lineso plot:

SELECTION : THERMOD

“Thermodynamic diagram“processing popup menu”GUI displays, on the rightdiagram with the gas and lsome iso lines, chosen by

Panel for the choice of iso

 

NAMIC DIAGRAM 

” has been selected on thein the general panel. Theside, the thermodynamicliquid saturation lines, andthe user.

-lines

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THERMAL FLUID LIBRARY INTERFACE 

In Matlab/Simulink PhiSim or Simscape thermallibrary, we can choose the fluids in a list (one phaseliquid and gas, two phases, moist Air, combustionmixture and gas mixture) and plot automatically themain standard diagram

PHISIM INTERFACE

- Thermal fluid choice -

Simscape HVAC Library

For Simscape modules, the fluid properties areentered in the custom thermal fluid block:

Real time superposition of thermodynamic cycle

Refrigerant loop (PH diagram)

Rankine Power plant (TS diagram)

We can plot all cycles in parallel and in real time ondifferent diagrams with an unlimited number ofpoints.

1.5 2 2.5 3 3.5 4 4.5

x 105

106

107

Specific enthalpy [J/kg]

   P  r  e  s  s  u  r  e

   [   P  a   ]

Mollier diagram of R134a

7

12

19

30

48

 7

 1 2 4

  1  9  9

  3  1   9

    5    1    1

        2        6         0 

        2 6 

        0 

        2 6 

        0 

260   260

280280

        2        8         0 

        2        8         0 

        2        8         0 

        2        8         0 

 2        8         0 

3   0   0   

300

        3         0         0 

        3         0         0 

        3         0         0 

        3         0         0 

 3         0         0 

3    2   0   

320

 3  2   0  

 3  2   0  

        3  2

        0 

        3  2

        0  3 

         2

340

 3       4       

 0       

 3  4   0  

 3  4   0  

        3         4        0 

 3         4

3 6 0 

3       6       0       

 3         6       

 0       

 3   6   0  

 3   6   0  

 0  

3       8       0       

 3        8        0       

 3        8        0       

 0       

3 8 0 

4     0     0     

4       0       0       

4        0        0       

 0        0       

4      2      0      

4       2       0       

4        2       

 0       

4        0       

0.02002 0.02002   .02002

     0  .     0 

     2     0      0      2

0.2 0.2   0.  2

     0  .     2

2   2

     2

20   2   0

     2     0 

   4   0   40

     4     0 

60

     6     0 

80

     8     0 

100

     1     0      0 

 1 2 0

     1     2     0 

  1 4  0

     1     4     0 

160

     1     6     0 

180

     1     8     0 

200

     2     0      0 

Specific entropy [J]

   T  e  m  p  e  r  a   t  u  r  e   [   K   ]

Mollier diagram of Water

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

300

400

500

600

700

800

900

1000