Le diagramme de Mollier (ou diagramme enthalpique) est un diagramme relatif aux fluides, Cycle d’un fluide Ra dans un Réfrigérateur à compression de vapeur. Les frigoristes utilisent des diagrammes enthalpiques pour y tracer le. 24 avr. Diagramme enthalpique du Ra Isobare La pression est représentée par l’ isobare. Il y a 2 formes de pressions. Il y a la Haute Pression (HP). Diagramme Enthalpique Ra. T||I||I|I||I||| INTRUSIONNE LEVEVIS. TITUTI I IZ T,. 1, 40,0. 30,0. 2, | 2,08 kJ/kg. KY.

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Cycle frigorifique détaillé

The user must fill in the data in the top grid. The logic is not much different that manual table look-up and interpolation — provide two independent properties, e.

For more on large aircraft engines using the Otto cycle, click here.

Back to Spreadsheets Main Page. Once you have implemented these functions properly, then the whole spreadsheet will update whenever any input parameter those having the green background in the screen grab below is changed.

Utilisation du diagramme enthalpique – tracé du cycle

Thus the temperature rise in the combustion step is a factor of the ratio of specific heats higher than in the Brayton cycle. This workbook for water allows you to plot points obtained using the CoolProp Excel add-in directly on a Mollier -Diagram found online at engineeringtoolbox.


This spreadsheet provides a template for analysis of the Brayton Cycle using the Cold Air Standard constant specific heats. The Mollier Diagram provides a useful way of depicting states and processes in a graphical format. The user must fill in the data in the top grid from other software or table lookup.

If you are analyzing a thermodynamic process or even a r134x cycle, you can save the data returned by the property calculator and add it as another data series to the existing plot.

Diagramme enthalpique

A second sheet in the same workbook not seen below but operating in a similar fashion is set up to include Regeneration. This template uses Ra as the working fluid, but can be readily changed to another refrigerant. If you use the thermal properties Excel add-in from CoolPropthen you can have enthalipque whole spreadsheet update whenever any input parameter is changed. The heat is added at constant volume instead of constant pressure.

This spreadsheet provides a template for analysis of the Rankine steam Cycle.

Online – Calculation – Tetrafluorethane – Ra

Make sure your volume is set up high when you open it! From that data, the cells in the second grid are updated, and Pressure-volume and Temperature-entropy diagrams are generated. This updated spreadsheet includes the capability of doing a sensitivity analysis.


It involves a slight in diagrmame modification to the Brayton cycle. Turn up your volume before opening! For photos of aircraft powered by the Brayton cycle Turbofans and Turboprops as well as some powered by the Otto cycle, click here.

You will find that the increase in entropy is lower than that in the Brayton cycle and the cycle efficiency is correspondingly higher. This workbook includes the capability of doing a sensitivity analysis. The vapor-compression refrigeration cycle is analogous to the Rankine cycle, but runs in the opposite direction counter-clockwise on the TS diagram vs. This spreadsheet provides a template for analysis of the Diesel compression-ignition, internal combustion Cycle.

The user can then plot the saturated liquid and saturated vapor lines in one of four common formats: This spreadsheet provides a template for analysis of the Otto spark-ignition, internal combustion Cycle.