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Development of a thermodynamic low order model for a twin screw expander with emphasis on pulsations in the inlet pipe

Iva Papeš, Joris Degroote UGent and Jan Vierendeels UGent (2016) APPLIED THERMAL ENGINEERING . 103. p.909-919
abstract
A twin screw expander is a positive displacement machine used in various applications of waste heat recovery. The performance of this machine is influenced by internal leakages, gas pulsations formed in the inlet pipe and the properties of the refrigerant. In this paper a multi-chamber mathematical model of a twin screw expander is presented to predict its performance. From the mass and energy conservation laws, differential equations are derived which are then solved together with the appropriate Equation of State (EoS) in the instantaneous control volumes. In order to calculate the mass flow rates through leakage paths more accurately, flow coefficients used in the converging nozzle model were derived from 3D Computational Fluid Dynamic (CFD) calculation. Due to high gas pulsation levels at the inlet port, a coupling with a 3D CFD inlet pipe model is introduced in order to better predict throttling losses. The maximal deviation between predictions by the developed model and 3D CFD calculations of the complete machine is around 5% for the mass flow rate and the power output.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
Twin screw expander, Thermodynamic model, Multi-chamber, Inlet pulsations, Aungier Redlich–Kwong EoS, Organic Rankine Cycle
journal title
APPLIED THERMAL ENGINEERING
volume
103
pages
11 pages
Web of Science type
Article
Web of Science id
000379560500089
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2016.04.159
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
7280886
handle
http://hdl.handle.net/1854/LU-7280886
alternative location
http://www.sciencedirect.com/science/article/pii/S1359431116306470
date created
2016-06-23 23:04:04
date last changed
2017-11-06 08:06:02
@article{7280886,
  abstract     = {A twin screw expander is a positive displacement machine used in various applications of waste heat recovery. The performance of this machine is influenced by internal leakages, gas pulsations formed in
the inlet pipe and the properties of the refrigerant. In this paper a multi-chamber mathematical model of a twin screw expander is presented to predict its performance. From the mass and energy conservation
laws, differential equations are derived which are then solved together with the appropriate Equation of State (EoS) in the instantaneous control volumes. In order to calculate the mass flow rates through leakage
paths more accurately, flow coefficients used in the converging nozzle model were derived from 3D Computational Fluid Dynamic (CFD) calculation. Due to high gas pulsation levels at the inlet port, a coupling with a 3D CFD inlet pipe model is introduced in order to better predict throttling losses. The maximal deviation between predictions by the developed model and 3D CFD calculations of the complete
machine is around 5\% for the mass flow rate and the power output.},
  author       = {Pape\v{s}, Iva and Degroote, Joris and Vierendeels, Jan},
  issn         = {1359-4311 },
  journal      = {APPLIED THERMAL ENGINEERING },
  keyword      = {Twin screw expander,Thermodynamic model,Multi-chamber,Inlet pulsations,Aungier Redlich--Kwong EoS,Organic Rankine Cycle},
  language     = {eng},
  pages        = {909--919},
  title        = {Development of a thermodynamic low order model for a twin screw expander with emphasis on pulsations in the inlet pipe},
  url          = {http://dx.doi.org/10.1016/j.applthermaleng.2016.04.159},
  volume       = {103},
  year         = {2016},
}

Chicago
Papeš, Iva, Joris Degroote, and Jan Vierendeels. 2016. “Development of a Thermodynamic Low Order Model for a Twin Screw Expander with Emphasis on Pulsations in the Inlet Pipe.” Applied Thermal Engineering 103: 909–919.
APA
Papeš, I., Degroote, J., & Vierendeels, J. (2016). Development of a thermodynamic low order model for a twin screw expander with emphasis on pulsations in the inlet pipe. APPLIED THERMAL ENGINEERING , 103, 909–919.
Vancouver
1.
Papeš I, Degroote J, Vierendeels J. Development of a thermodynamic low order model for a twin screw expander with emphasis on pulsations in the inlet pipe. APPLIED THERMAL ENGINEERING . 2016;103:909–19.
MLA
Papeš, Iva, Joris Degroote, and Jan Vierendeels. “Development of a Thermodynamic Low Order Model for a Twin Screw Expander with Emphasis on Pulsations in the Inlet Pipe.” APPLIED THERMAL ENGINEERING 103 (2016): 909–919. Print.