Virtual Lobby

Welcome to the virtual lobby for IIR Conference on Compressors and Refrigerants!

Click here to download the abstract proceedings.

Here you can choose from one of the sessions below and join the presenters at the planned time slots. You will also be able to access recorded presentations after the conference.

All times are given in Central European Time.

9.9.2024

Plenary session

Conference hall, 15:00 – 18:00

Open session room

Príspevky
HFCs Phase-Down: New International and National Challenges
Presented by Didier Coulomb, Director
What will the future be for the refrigeration and heat pump technology?
Presented by Alexander Cohr Pachai
Decarbonizing mid-size industrial application with large scroll compressors: vision and challenges
Presented by Ivan Rangelov
Important Parameters for Determining the Feasibility of a Global Net Zero for RACHP in 2050
Presented by Natascha Kochova
ARE THE PRODUCT SAFETY STANDARS READY TO ALLOW IMPLEMENTATION OF UPDATED F-GAS REGULATIONS FOR COMMERCIAL REFRIGERATION?
Presented by Marek Zgliczynski
The future of technology research and development
Presented by Alexander Cohr Pachai
Compressors in electronic logbook "Leaklog"
Presented by Michal Tomlein, Ing.
Professor Aurel Stodola, Polymath and big personality. Commemorative Medals of Aurel Stodola will be awarded
Presented by Ľubomír Šoóš, Prof. Dr. h.c.

10.9.2024

Heat pumps I

STU Bratislava, 09:00 – 10:30

Open session room

Príspevky
Design and control strategy of an innovative CO2 residential monoblock heat pump for domestic hot water
Presented by Claudia FIABANE
High Temperature Heat pump applications for i ndustr ial processes
Presented by Ivan Rangelov
How changes in lubricant can address challenges associated with hydrocarbon refrigerant High Temperature Heat Pumps (HTHP)
Presented by Manuel Muñoz Alonso
It’s Getting Hot in Here: Lubricant Considerations for Heat Pumps
Presented by Kelsey Carter, Ph.D.
Refrigerant charge and performance of a heat pump compressor using natural refrigerant mixtures – Experimental investigations and modeling
Presented by Matteo Caramaschi

Reciprocating compressors I

STU Bratislava, 09:00 – 10:30

Open session room

Príspevky
Hermetic compressor valve robust design assessment
Presented by Mattias da Silva Castro
Thermocouple influence on Heat Transfer Coefficient measurement
Presented by Jiří Hejčík, Ing. PhD.
Characterizing Sources of Volumetric Inefficiency in Reciprocating Compressors
Presented by Larissa M. Santos, M.Sc.
Quantifying Inefficiencies in Variable-Speed Reciprocating Compressors: An Exergy Approach
Presented by Iana M. Araujo, M.Sc.
A Modelica-Based Framework for Thermal Simulation and Performance Analysis of Hermetic Reciprocating Compressors
Presented by João P. O. Freitas, M.Sc.

Reciprocating compressors II

STU Bratislava, 11:00 – 11:30

Open session room

Príspevky
Automated hot-cycle calorimeter for small-capacity compressors running at 16C and 32C surrounding air temperature
Presented by Jairo Vieira, B.Eng.
CO2 doped blends: experimental performance impact on semihermetic compressor
Presented by Manel Martínez-Ángeles, Phd student
Isothermal gas compression and expansion processes by controlling actuators
Presented by Török Arpad, researcher
Performance analysis of a semihermetic reciprocating compressor for different CO2-based mixtures
Presented by Ramón Cabello López, Full Professor
DOMESTIC REFRIGERATORS SINGLE-PHASE ASYNCHRONOUS MOTORS DYNAMIC CHARACTERISTICS SIMULATION
Presented by Yurii Baidak, DSc

Compressors and technologies

STU Bratislava, 11:00 – 12:30

Open session room

Príspevky
Analysis of methods to improve the energy efficiency for sustainable marine solutions
Presented by Mykhailo Khmelniuk, Doctor of Technical Sciences
Analysis of various refrigerants in lower condensing temperatures in a hybrid adsorption-compression refrigeration system
Presented by Marcin Borcuch, PhD
Open Source Software for Pulsation Analysis of Pipeline Systems
Presented by Olavo M. Silva, PhD
Prototype of eutectic refrigeration system working with R1270 refrigerant
Presented by Lukas Prakopavičius, MEng
Thermosyphon ice storage using pillow-plate heat exchangers: Experimental investigation
Presented by Armin Hafner

Rotary, scroll, screw, ... compressors I

STU Bratislava, 13:30 – 15:00

Open session room

Príspevky
Bayesian-Inference Identification of Degradation Parameters for a Water-Cooled Variable Speed Screw Chiller
Presented by Andreas J. Hoess
Compressor durability evaluation with the R-1132(E) based refrigerant R-474A for high-efficient and high-performant BEV heat pump systems
Presented by Christian Macrì
Development of a Semi-Physical Model for Screw Compressors for Optimal High-Temperature Heat Pump Design
Presented by Anna Halle, M.Sc.
Experimental assessment of oil free liquid injection twin screw compressor for high temperature industrial applications
Presented by Khalid Hamid
R744 trans-critical turbo-compressor configurations @ -50℃
Presented by Stefanie Blust

Special compressors and components I

STU Bratislava, 13:30 – 15:00

Open session room

Príspevky
Active shading system as a reduction of building cooling requirements
Presented by Michal Masaryk, prof., Ing., PhD.
EXPERIMENTAL INVESTIGATION OF A TWO-PHASE EJECTOR IN APPLICATION TO PROPANE SYSTEMS
Presented by Dariusz Butrymowicz
EXPERIMENTAL INVESTIGATIONS OF HYBRID VAPOUR COMPRESSION-EJECTION REFRIGERATION SYSTEM
Presented by Dariusz Butrymowicz, Prof.
R744 HEAT PUMPS WITH EJECTORS: PROJECTS, OBJECTIVES AND RESULTS
Presented by Oliver Javerschek
Small water ejector chiller with on-off operated pump
Presented by Samuel Mališek, Ing.

Special compressors and components II

STU Bratislava, 15:15 – 16:00

Open session room

Príspevky
EXPERIMENTAL ASSESSMENT OF WASTE HEAT UTILISATION IN MARINE AIR CONDITIONING UNIT
Presented by Dariusz Butrymowicz, Prof.

Rotary, scroll, screw, ... compressors II

STU Bratislava, 15:15 – 16:00

Open session room

Príspevky
Design and Validation of Suction Vapor Quality Determination and Control Method for Compressor Performance Measurement under Two Phase Suction Conditions
Presented by Wang Kan, Master
VARIABLE-SPEED COMPRESSOR RATINGS DISPLAYED WITHIN SINGLE THIRD-DEGREE POLYNOMIAL FUNCTION
Presented by Tobias Guth, M.Sc.
State of the art of miniature compressors
Presented by Mihael Blatnik, MSc

11.9.2024

Compressors and refrigerants

STU Bratislava, 09:00 – 10:30

Open session room

Príspevky
APPLICATION OF LOW-GWP REFRIGERANTS R1233zdE AND R1234zeE FOR LARGE SCALE EJECTOR REFRIGERATION SYSTEMS OPERATING UNDER REAL INDUSTRIAL CONDITIONS
Presented by Dariusz Butrymowicz
Design of a CO2 plate freezer test facility with -50°C evaporation temperature
Presented by Shuai REN, Doctor
Low GWP refrigerant for stationary applications
Presented by Álvaro de León
Optimization of the composition of mixtures based on R744 and hydrocarbons: Efficiency and Prospects
Presented by Hlib Zaruba
Theoretical Analysis on the Thermal Performance of R600a, R290 and Their Mixtures in a Retrofit R134a Vapor Compression Refrigeration System
Presented by ZHONGJIE HUAN, PhD: Thermal Engineering

Compressors and oils

STU Bratislava, 09:00 – 10:30

Open session room

Príspevky
A NOVEL MODELLING APPROACH FOR THERMODYNAMIC DATA OF REFRIGERANT-OIL MIXTURES
Presented by Steffen Feja, Dr. rer. nat.
Continuous Inline Measurement for Oil Concentration Ratio in Refrigerant
Presented by Duc Tien Le, Master
Effect of probe sonication time on nano-lubricant stability
Presented by Bongani Hadebe, Doctor of Engineering in Mechanical Engineering
Off the shelve reciprocating compressor with little wear after employment in high temperature heat pump for more than 1400 hours of operation
Presented by Leon Brendel, PhD
Tribology in Refrigerant Compressors for Residential Heat Pumps – Current Challenges and Opportunities
Presented by Max Joswig, Dipl.-Ing.

Conference closing

STU Bratislava, 11:00 – 11:30

Open session room