Analysis of Flow Losses in the Interlobe Clearance of Liquid-Injected Screw Machines
M. Geissendorf¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Considering hydrodynamic load-carrying capacity of the interlobe clearance in thermodynamic simulation of liquid-injected screw machines
M. Geissendorf¹, M. Heselmann¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Comparison of degassing modelling approaches in two-phase gap flows
L. Burchardt¹, J. Vorspohl², D. Krug², A. Brümmer^1
1Chair of Fluidics, TU Dortmund University
²Institute of Aerodynamics and Chair of Fluid Mechanics, RWTH Aachen University, Germany

Research on the Thermal-induced Micro-deformation and Radial Clearance Leakage of A Roots Vacuum Pump
C. Sun¹, Z. He¹, D. Li^1
1Xi'an Jiaotong University, People's Republic of China

Steam as a Working Fluid in Twin-Screw Compressors: Effects of Liquid Injection and Condensate Formation
M. Grieb¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Experimental investigation of microscopic surface structures influencing rarefied Poiseuille gap flow
S. Brock¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Clearance Measurement in Oil-Free Screw Compressors: A Combined Eddy Current and Fiber Bragg Grating Approach Under Steady-State and Transient Conditions
A. Kishan^1,2, A. Kovacevic², B. Milligan¹, F. Matthias^2
1Howden Compressor, Chart Industries Company, United Kingdom
²City St George's, University of London, United Kingdom

SplineMesh v3.0: Robust spline-based structured mesh generation for vacuum pumps with sharp features
Y. Ji¹, M. Möller^1
1Delft Institute of Applied Mathematics, Delft University of Technology, The Netherlands

Leakage-Induced Heat Transfer in Liquid Injected Screw Compressors
M. Heselmann¹, T. Monden¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Impact of Reversible Screw Expander-Compressor on Carnot Battery Efficiency
M. Heselmann¹, L. Zendel², M. Sander², F. Dammel², P. Stephan², A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany
²Institute of Technical Thermodynamics, Darmstadt University of Technology, Germany

Investigation of Oil Influence in an Oil-Injected Screw Compressor Using a Thermodynamic Chamber Model
H. Trumpf¹, Y. Xu¹, K. Klotsche¹, C. Thomas^1
1Schaufler Chair of Refrigeration, Cryogenics and Compressor Technology, TUD Dresden University of Technology, Germany

Thermodynamic Modelling of a Dry-Running Screw-Spindle Compressor for Low-Pressure Steam Generation (presentation only)
M. Enge¹, T. Mösch², K. Klotsche¹, C. Thomas^1
1Schaufler Chair of Refrigeration, Cryogenics and Compressor Technology, TUD Dresden University of Technology, Germany
²Combitherm GmbH, Germany

The property software TREND and its application for modeling processes (presentation only)
A. Jäger¹, M. F. Schneegans¹, F. Sabozin², M. Thol^2
1Institute of Power Engineering, TUD Dresden University of Technology, Germany
²Chair of Thermodynamics, Ruhr University Bochum, Germany

Laser-Optical Diagnostics of Velocity Profiles in Thin Annular Rotor-Stator Gaps (presentation only)
H. L. Lange¹, J. Kriegseis^1
1Institute of Fluid Mechanics, Karlsruhe Institute of Technology, Germany

High-resolution simulations of gas-liquid mass transfer in sealing gap flows (presentation only)
J. Vorspohl, L. Burchardt, M. Meinke, A. Brümmer, D. Krug
¹Institute of Aerodynamics and Chair of Fluid Mechanics, RWTH Aachen University, Germany
²Chair of Fluidics, TU Dortmund University, Germany

Industrial Design Philosophy and Experimental Validation of Slide Valve Capacity Control in Refrigeration Screw Compressors
A. Kumar^1
1Kirloskar Pneumatic Company Limited, India

Influence of Rotor Profile Characteristics upon Leakage Mechanism and Performance of Screw Compressors
H. Keshtkar¹, N. Stosic¹, D. Buckney², H. Abbasi¹, A. Kovacevic^1
1City St George's, University of London, United Kingdom
²Mayekawa UK Ltd., United Kingdom

Material Selection Framework for Rotors in Water-Lubricated Twin-Screw Compressor
H. Abbasi¹, A. Kovacevic¹, D. Buckney², N. Stosic^1
1City St George's, University of London, United Kingdom
²Mayekawa UK Ltd., United Kingdom

Design and Performance Study of a Symmetrical Variable-Lead Screw Compressor
Y. Zhou¹, G. Chen¹, Y. Wang¹, D. Feng¹, Y. Xiong¹, J. Feng¹, H. Wu^1
1School of Energy and Power Engineering, Xi'an Jiaotong University, People's Republic of China

An Extended Optimization Framework for Screw Compressors Considering Mechanical Losses
T. Fehlau¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Development of an Integrated Design Tool for Enhancing Thermal, Structural, and Material Performance in Non-Lubricated Screw Compressors
D. Erkan¹, B. N. Yüceur¹, D. A. Soylu^1
1Dalgakıran Kompresör, Turkiye

Investigation into the Optimization of Oil Injection Port Positioning for Thermal Management and Efficiency in Twin-Screw Airends
K. Arslan¹,  B. N. Yüceur^1
1Dalgakıran Kompresör, Turkiye

Design of a Dry-Running Screw-Spindle Compressor for Low Pressure Steam Generation
T. Mösch¹, M. Enge², S. Tuffaha², K. Klotsche², C. Thomas², U. Hesse^2
1Combitherm GmbH, Germany
²Schaufler Chair of Refrigeration, Cryogenics and Compressor Technology, TUD Dresden University of Technology, Germany

Experimental Design for Lubricant Degradation Assessment in an Oil-Injected Air Twin-Screw Compressor
A. Peco¹, A. Kovacevic^1
1City St George's, University of London, United Kingdom

Characterising leakage flow in Internally-Geared Screw Compressors
M. Read^1
1City St George's, University of London, United Kingdom

CFD-DPM Investigation and Parametric Optimization of Two-Stage Cyclonic Oil-Air Separator for Screw Compressor Systems
B. N. Yüceur¹, D. Erkan^1
1Dalgakıran Kompresör, Turkiye

Thermodynamic Study on Twin- Screw Compressor with Internally Cooled Rotors (presentation only)
A. J. Hoess¹, E. A. Groll¹, D. Ziviani^1
1Ray W. Herrick Laboratories, Purdue University, USA

Multiphase CFD of Positive Displacement Machines Using Simcenter STAR-CCM+: Methods and Application Examples (presentation only)
J. Hesse¹, A. Spille^1
1CFX Berlin Software GmbH, Germany

System simulation of a food and beverage process plant including mechanical vapour recompression via twin-screw machines using GT-SUITE and GT-SCORG (presentation only)
M. Luzzi¹, D. Petrik¹, D. Vijay¹, A. Kovacevic^2
1Gamma Technologies GmbH, Germany
²City St George's, University of London, United Kingdom

KAIrAA: A Data-Driven Digital Tool for Real-Time Performance Prediction of Ammonia Screw Compressors
A. Kumar¹, S. Rokade^1
1Kirloskar Pneumatic Company Limited, India

Waste heat energy recovery potential in compressed air systems
J.-G. A. Persson^1
1JGP Teknikkonsult and KTH Machine Design, Sweden

Passive Signal Analysis for Component Level Condition Monitoring in Screw Pumps
M.-J. Fikacek¹, C. Bayer^2
1Leistritz Pumpen GmbH, Germany
²Technische Hochschule Nürnberg, Germany

Experimental Investigation of the Effect of Oil Flow Rate on Vibration Severity in Oil-Injected Screw Compressors
T. Erkan¹, D. Erkan^1
1Dalgakıran Kompresör, Turkiye

Optimization of Oil Operating Temperature and PID-Based Fan Control in Industrial Screw Compressors Using MATLAB/Simulink
T. Elma¹, A. A. Bogalioglu¹, D. A. Soylu¹, H. Öztürk^1
1Dalgakıran Kompresör, Turkiye

A combined screw spindle expander and compressor for CO2 heat pump cycles
M. Hagemann¹, A. Brümmer^1
1Chair of Fluidics, TU Dortmund University, Germany

Experimental investigation of wear in screw pumps
P. Moor¹, M. M. G. Kuhr¹, C. Albrecht², P. F. Pelz^1
1Chair of Fluid Systems, Darmstadt University of Technology, Germany
²Leistritz Pumpen GmbH, Germany

Optimization of Oil Injection Flow Rates in Variable Speed Compressors: Reducing Specific Power under Constant Pressure Conditions
D. A. Soylu¹, K. Arslan^1
1Dalgakiran Makine, Turkiye

A Comprehensive Analysis of Thrust Bearing Load in Oil-Injected Screw Compressors for Oil and Gas Applications
T. Dutra¹, E. Silva¹, V. Braga¹, A. Caetano¹, O. Silva¹, R. Timbo², D. Morais^2
1Thermofluids Engineering Group, Federal University of Santa Catarina, Brazil
²Petroleo Brasileiro S.A. - PETROBRAS, Brazil

Vibration Analysis and Solution for Hydrogen Screw Compressor Piping
H. Wei¹, F. Jianmei¹, P. Xueyuan^1
1Xi'an Jiaotong University, People's Republic of China

Experimental Assessment of a High-Temperature Screw-Compressing Heat Pump for Charging a Carnot Battery Using Flooded-Mine
A. Cendoya¹, F. Ransy¹, B. Guo¹, A. Hernandez¹, V. Lemort^1
1Thermodynamics Laboratory, Faculty of Applied Sciences, University of Liege, Belgium

Cooling optimization of a claw pump using Conjugate Heat Transfer
J. F. Willie^1
1CVS Engineering GmbH, Germany

Oil Management of a Reversible Twin-Screw Machine for Heat Pump and ORC Operation (presentation only)
J. von Zabienski¹, H. Spliethoff¹, C. Schifflechner^1
1Chair of Energy Systems, Technical University of Munich, Germany