ShareThermodynamic modeling of screw expander in a trilateral flash cycle.
Number: pap.1432
Author(s) : VASUTHEVAN H., BRÜMMER A.
Summary
The present paper focuses on the thermodynamic modeling of screw expanders in a trilateral flash cycle. In this process a liquid is pumped from low to high pressure and then heated up close to saturation point. Instead of a vaporous working fluid as usual, a hot liquid is filled in the working chamber of the screw expander. During the filling process the pressure of the liquid drops below the saturation pressure while the temperature remains almost constant due to a fast process. Hence the liquid is in a metastable state. The liquid aspires a stable state and therefore is vaporized during the filling and expansion process due to its increasing chamber volume. Thus a two-phase mixture, vapor and liquid, exists in the working chamber. The simulation presented includes the calculation of fluid states within each chamber to be in thermodynamic equilibrium, which assumes that a sufficient heat transfer exists between the phases to reach a stable state within a time step. Thermodynamic simulations are carried out using water as the working fluid for an exemplary screw expander geometry. The conclusive assessment of the thermodynamic model is demonstrated by the comparison of the simulation results with available experimental measurement results for a corresponding two-phase screw expander.
Available documents
Format PDF
Pages: 10 p.
Available
Public price
20 €
Member price*
15 €
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Thermodynamic modeling of screw expander in a trilateral flash cycle.
- Record ID : 30019563
- Languages: English
- Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
- Publication date: 2016/07/11
Links
See other articles from the proceedings (122)
See the conference proceedings
Indexing
-
Themes:
Thermodynamics and changes of state;
Expansion systems - Keywords: Thermodynamics; Screw; Modelling; Expander; Leakage
-
Analysis of liquid-flooded expansion using a sc...
- Author(s) : LEMORT V., BELL I., GROLL E., et al.
- Date : 2008/07/14
- Languages : English
- Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
View record
-
A study on the reduction of throttling losses i...
- Author(s) : GONÇALVES V. de A., PARISE J. A. R.
- Date : 2008/07/14
- Languages : English
- Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
View record
-
Development of liquid-flooded scroll compressor...
- Author(s) : BELL I., LEMORT V., BRAUN J., et al.
- Date : 2008/07/14
- Languages : English
- Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
View record
-
Modelling and experimental investigation on the...
- Author(s) : YANG B., SUN S., PENG X., et al.
- Date : 2008/07/14
- Languages : English
- Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
View record
-
Transcritical leakage flow in CO2 expander.
- Author(s) : FUKUTA M., ADACHI M., YANAGISAWA T., et al.
- Date : 2010/02/17
- Languages : English
- Source: Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
View record