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1

Decreasing students’ stress through time management training: an intervention study

Häfner, Alexander, Stock, Armin, Oberst, Verena

Journal:

European Journal of Psychology of Education

Year:

2015

Language:

english

File:

PDF, 269 KB

english, 2015

2

Transcritical R744 refrigeration systems for supermarket applications: Current status and future perspectives

Gullo, Paride, Hafner, Armin, Banasiak, Krzysztof

Journal:

International Journal of Refrigeration

Year:

2018

Language:

english

File:

PDF, 2.94 MB

english, 2018

3

Multi-ejector R744 booster refrigerating plant and air conditioning system integration – A theoretical evaluation of energy benefits for supermarket applications

Gullo, Paride, Hafner, Armin, Cortella, Giovanni

Journal:

International Journal of Refrigeration

Year:

2017

Language:

english

File:

PDF, 1.17 MB

english, 2017

4

Avoiding procrastination through time management: an experimental intervention study

Häfner, Alexander, Oberst, Verena, Stock, Armin

Journal:

Educational Studies

Year:

2014

Language:

english

File:

PDF, 175 KB

english, 2014

5

Time Management Training and Perceived Control of Time at Work

Häfner, Alexander, Stock, Armin

Journal:

The Journal of Psychology

Year:

2010

Language:

english

File:

PDF, 288 KB

english, 2010

6

Experimental and Computational Analysis of a R744 Flashing Ejector

Giacomelli, Francesco, Mazzelli, Federico, Banasiak, Krzysztof, Hafner, Armin, Milazzo, Adriano

Journal:

International Journal of Refrigeration

Year:

2019

Language:

english

File:

PDF, 3.13 MB

english, 2019

7

Performance mapping of the R744 ejectors for refrigeration and air conditioning supermarket application: A hybrid reduced-order model

Haida, Michal, Smolka, Jacek, Hafner, Armin, Ostrowski, Ziemowit, Palacz, Michał, Madsen, Kenneth B., Försterling, Sven, Nowak, Andrzej J., Banasiak, Krzysztof

Journal:

Year:

2018

Language:

english

File:

PDF, 3.25 MB

english, 2018

8

State-of-the-art technologies for transcritical R744 refrigeration systems – a theoretical assessment of energy advantages for European food retail industry

Gullo, Paride, Tsamos, Konstantinos, Hafner, Armin, Ge, Yunting, Tassou, Savvas A.

Journal:

Energy Procedia

Year:

2017

Language:

english

File:

PDF, 1.03 MB

english, 2017

9

Mathematical modelling of supersonic two-phase R744 flows through converging–diverging nozzles: The effects of phase transition models

Banasiak, Krzysztof, Hafner, Armin

Journal:

Applied Thermal Engineering

Year:

2013

Language:

english

File:

PDF, 632 KB

english, 2013

10

Design and simulations of refrigerated sea water chillers with CO 2 ejector pumps for marine applications in hot climates

Bodys, Jakub, Hafner, Armin, Banasiak, Krzysztof, Smolka, Jacek, Ladam, Yves

Journal:

Year:

2018

Language:

english

File:

PDF, 2.30 MB

english, 2018

11

1D Computational model of a two-phase R744 ejector for expansion work recovery

Krzysztof Banasiak, Armin Hafner

Journal:

International Journal of Thermal Sciences

Year:

2011

Language:

english

File:

PDF, 694 KB

english, 2011

12

Stress prevention through a time management training intervention: an experimental study

Häfner, Alexander, Stock, Armin, Pinneker, Lydia, Ströhle, Sabine

Journal:

Educational Psychology

Year:

2014

Language:

english

File:

PDF, 157 KB

english, 2014

13

Development and performance mapping of a multi-ejector expansion work recovery pack for R744 vapour compression units

Banasiak, Krzysztof, Hafner, Armin, Kriezi, Ekaterini E., Madsen, Kenneth B., Birkelund, Michael, Fredslund, Kristian, Olsson, Rickard

Journal:

International Journal of Refrigeration

Year:

2015

Language:

english

File:

PDF, 4.45 MB

english, 2015

14

A steady and quasi-steady state analysis on the CO 2 hybrid ground-coupled heat pumping system

Jin, Zhequan, Eikevik, Trygve M., Nekså, Petter, Hafner, Armin

Journal:

International Journal of Refrigeration

Year:

2017

Language:

english

File:

PDF, 1.71 MB

english, 2017

15

Experimental and numerical investigation of the influence of the two-phase ejector geometry on the performance of the R744 heat pump

Banasiak, Krzysztof, Hafner, Armin, Andresen, Trond

Journal:

International Journal of Refrigeration

Year:

2012

Language:

english

File:

PDF, 739 KB

english, 2012

16

Energy saving potential in freezing applications by applying cold thermal energy storage with solid carbon dioxide

Hafner, Armin, Nordtvedt, Tom Ståle, Rumpf, Ingrid

Journal:

Procedia Food Science

Year:

2011

Language:

english

File:

PDF, 827 KB

english, 2011

17

A CFD-based investigation of the energy performance of two-phase R744 ejectors to recover the expansion work in refrigeration systems: An irreversibility analysis

Banasiak, Krzysztof, Palacz, Michał, Hafner, Armin, Buliński, Zbigniew, Smołka, Jacek, Nowak, Andrzej J., Fic, Adam

Journal:

International Journal of Refrigeration

Year:

2014

Language:

english

File:

PDF, 918 KB

english, 2014

18

Annual energy performance of R744 and R410A heat pumping systems

Jin, Zhequan, Eikevik, Trygve M., Nekså, Petter, Hafner, Armin, Wang, Ruzhu

Journal:

Applied Thermal Engineering

Year:

2017

Language:

english

File:

PDF, 1.14 MB

english, 2017

19

Full-scale multi-ejector module for a carbon dioxide supermarket refrigeration system: Numerical study of performance evaluation

Bodys, Jakub, Palacz, Michal, Haida, Michal, Smolka, Jacek, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

Energy Conversion and Management

Year:

2017

Language:

english

File:

PDF, 3.22 MB

english, 2017

20

Experimental study of the heat transfer problem in expansion devices in CO2 refrigeration systems

Mastrowski, Mikolaj, Smolka, Jacek, Hafner, Armin, Haida, Michal, Palacz, Michal, Banasiak, Krzysztof

Journal:

Year:

2019

File:

PDF, 1.18 MB

2019

21

A computational model of a transcritical R744 ejector based on a homogeneous real fluid approach

Smolka, Jacek, Bulinski, Zbigniew, Fic, Adam, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

Applied Mathematical Modelling

Year:

2013

Language:

english

File:

PDF, 1.46 MB

english, 2013

22

Application range of the HEM approach for CO2 expansion inside two-phase ejectors for supermarket refrigeration systems

Palacz, Michal, Smolka, Jacek, Fic, Adam, Bulinski, Zbigniew, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

International Journal of Refrigeration

Year:

2015

Language:

english

File:

PDF, 1.10 MB

english, 2015

23

R744 ejector technology future perspectives

Hafner, Armin, Banasiak, Krzysztof

Journal:

Journal of Physics Conference Series

Year:

2016

Language:

english

File:

PDF, 1.49 MB

english, 2016

24

Experimental analysis of the r744 vapour compression rack equipped with the multi-ejector expansion work recovery module

Haida, Michał, Banasiak, Krzysztof, Smołka, Jacek, Hafner, Armin, Eikevik, Trygve M.

Journal:

International Journal of Refrigeration

Year:

2016

Language:

english

File:

PDF, 2.04 MB

english, 2016

25

Experimental study of the heat transfer problem in expansion devices in CO2 refrigeration systems

Mastrowski, Mikolaj, Smolka, Jacek, Hafner, Armin, Haida, Michal, Palacz, Michal, Banasiak, Krzysztof

Journal:

Year:

2019

Language:

english

File:

PDF, 1.18 MB

english, 2019

26

ANN modelling of CO2 refrigerant cooling system COP in a smart warehouse

Opalic, Sven Myrdahl, Goodwin, Morten, Jiao, Lei, Nielsen, Henrik Kofoed, PardiÃ±as, Ãngel Ãlvarez, Hafner, Armin, Kolhe, Mohan Lal

Journal:

Journal of Cleaner Production

Year:

2020

File:

PDF, 2.02 MB

2020

27

An overview of the effect of lubricant on the heat transfer performance on conventional refrigerants and natural refrigerant R-744

Chi-Chuan Wang, Armin Hafner, Cheng-Shu Kuo, Wen-Der Hsieh

Journal:

Renewable and Sustainable Energy Reviews

Year:

2012

Language:

english

File:

PDF, 2.12 MB

english, 2012

28

Performance assessment of an off-the-shelf R744 heat pump equipped with an ejector

Minetto, Silvia, Brignoli, Riccardo, Banasiak, Krzysztof, Hafner, Armin, Zilio, Claudio

Journal:

Applied Thermal Engineering

Year:

2013

Language:

english

File:

PDF, 1.41 MB

english, 2013

29

Novel integrated CO 2 vapour compression racks for supermarkets. Thermodynamic analysis of possible system configurations and influence of operational conditions

Pardiñas, Ángel Á., Hafner, Armin, Banasiak, Krzysztof

Journal:

Applied Thermal Engineering

Year:

2018

Language:

english

File:

PDF, 2.33 MB

english, 2018

30

Modified homogeneous relaxation model for the r744 trans-critical flow in a two-phase ejector

Haida, Michal, Smolka, Jacek, Hafner, Armin, Palacz, Michal, Banasiak, Krzysztof, Nowak, Andrzej J.

Journal:

International Journal of Refrigeration

Year:

2017

Language:

english

File:

PDF, 2.10 MB

english, 2017

31

System model derivation of the CO 2 two-phase ejector based on the CFD-based reduced-order model

Haida, Michal, Smolka, Jacek, Hafner, Armin, Ostrowski, Ziemowit, Palacz, Michal, Nowak, Andrzej J., Banasiak, Krzysztof

Journal:

Year:

2017

Language:

english

File:

PDF, 11.84 MB

english, 2017

32

Dynamic modelling of local low-temperature heating grids: A case study for Norway

Kauko, Hanne, Kvalsvik, Karoline Husevåg, Rohde, Daniel, Hafner, Armin, Nord, Natasa

Journal:

Year:

2017

Language:

english

File:

PDF, 4.22 MB

english, 2017

33

CFD-based shape optimisation of a CO2 two-phase ejector mixing section

Palacz, Michal, Smolka, Jacek, Kus, Waclaw, Fic, Adam, Bulinski, Zbigniew, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

Applied Thermal Engineering

Year:

2016

Language:

english

File:

PDF, 851 KB

english, 2016

34

Preliminary study on CO2 transcritical ejector enhanced compressor refrigeration system for independent space cooling and dehumidification

Jin, Zhequan, Hafner, Armin, Eikevik, Trygve M., Nekså, Petter

Journal:

International Journal of Refrigeration

Year:

2019

File:

PDF, 1.75 MB

2019

35

Performance comparison of fixed- and controllable-geometry ejectors in a CO2 refrigeration system

Smolka, Jacek, Palacz, Michal, Bodys, Jakub, Banasiak, Krzysztof, Fic, Adam, Bulinski, Zbigniew, Nowak, Andrzej J., Hafner, Armin

Journal:

International Journal of Refrigeration

Year:

2016

Language:

english

File:

PDF, 3.18 MB

english, 2016

36

Platelet-to-Lymphocyte Ratio: A Novel Marker for Critical Limb Ischemia in Peripheral Arterial Occlusive Disease Patients

Gary, Thomas, Pichler, Martin, Belaj, Klara, Hafner, Franz, Gerger, Armin, Froehlich, Harald, Eller, Philipp, Rief, Peter, Hackl, Gerald, Pilger, Ernst, Brodmann, Marianne, Kirchmair, Rudolf

Journal:

Year:

2013

Language:

english

File:

PDF, 123 KB

english, 2013

37

[IEEE 2019 American Control Conference (ACC) - Philadelphia, PA, USA (2019.7.10-2019.7.12)] 2019 American Control Conference (ACC) - Data-Driven Modeling of a CO 2 Refrigeration System

Andreasen, Glenn, Stoustrup, Jakob, Izadi-Zamanabadi, Roozbeh, Pardinas, Angel A., Hafner, Armin

Year:

2019

File:

PDF, 808 KB

2019

38

Parallel Work of CO 2 Ejectors Installed in a Multi-Ejector Module of Refrigeration System

Bodys, Jakub, Palacz, Michal, Haida, Michal, Smolka, Jacek, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

Journal of Physics Conference Series

Year:

2016

Language:

english

File:

PDF, 1.87 MB

english, 2016

39

Performance of fixed geometry ejectors with a swirl motion installed in a multi-ejector module of a CO2 refrigeration system

Bodys, Jakub, Smolka, Jacek, Palacz, Michal, Haida, Michal, Banasiak, Krzysztof, Nowak, Andrzej J., Hafner, Armin

Journal:

Year:

2016

Language:

english

File:

PDF, 3.14 MB

english, 2016

40

Crossing CO2 equator with the aid of multi-ejector concept: A comprehensive energy and environmental comparative study

Gullo, Paride, Tsamos, Konstantinos M., Hafner, Armin, Banasiak, Krzysztof, Ge, Yunting T., Tassou, Savvas A.

Journal:

Year:

2018

Language:

english

File:

PDF, 1.92 MB

english, 2018

41

CFD simulations of transport phenomena during transcritical flow of real fluid (CO 2 ) within ejector

Nowak, Andrzej J, Palacz, Michal, Smolka, Jacek, Banasiak, Krzysztof, Bulinski, Zbigniew, Fic, Adam, Hafner, Armin

Journal:

International Journal of Numerical Methods for Heat & Fluid Flow

Year:

2016

Language:

english

File:

PDF, 265 KB

english, 2016

42

Influence of Lubricant on the Nucleate Boiling Heat Transfer Performance of Refrigerant—A Review

Wang, Chi-Chuan, Hafner, Armin, Kuo, Cheng-Shu, Hsieh, Wen-Der

Journal:

Heat Transfer Engineering

Year:

2014

Language:

english

File:

PDF, 3.92 MB

english, 2014

43

Energy efficient multiejector CO2 cooling system for high ambient temperature

Singh, Simarpreet, Maiya, Prakash M., Hafner, Armin, Banasiak, Krzysztof, Neksa, Petter

Journal:

Thermal Science and Engineering Progress

Year:

2020

File:

PDF, 4.78 MB

2020

44

Investigation of R-744 Voorhees transcritical heat pump system

Shitong Zha, Armin Hafner, Petter Nekså

Journal:

International Journal of Refrigeration

Year:

2008

Language:

english

File:

PDF, 411 KB

english, 2008

45

HEM and HRM accuracy comparison for the simulation of CO 2 expansion in two-phase ejectors for supermarket refrigeration systems

Palacz, Michal, Haida, Michal, Smolka, Jacek, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

Applied Thermal Engineering

Year:

2017

Language:

english

File:

PDF, 1.93 MB

english, 2017

46

Multi-ejector concept for R-744 supermarket refrigeration

Hafner, Armin, Försterling, Sven, Banasiak, Krzysztof

Journal:

International Journal of Refrigeration

Year:

2014

Language:

english

File:

PDF, 2.87 MB

english, 2014

47

Performance evaluation of ejector based CO2 system for simultaneous heating and cooling application in an Indian dairy industry

Dasi, Koti, Singh, Simarpreet, A.M., Guruchethan, Maiya, M.P., Hafner, Armin, Banasiak, Krzysztof, Neksa, Petter

Journal:

Thermal Science and Engineering Progress

Year:

2020

File:

PDF, 1.03 MB

2020

48

two-phase ejector flow modeling

Ringstad, Knut Emil, Allouche, Yosr, Gullo, Paride, Ervik, Ãsmund, Banasiak, Krzysztof, Hafner, Armin

Journal:

Thermal Science and Engineering Progress

Year:

2020

File:

PDF, 138 KB

2020

49

Shape optimisation of a two-phase ejector for CO2 refrigeration systems

Palacz, Michal, Smolka, Jacek, Nowak, Andrzej J., Banasiak, Krzysztof, Hafner, Armin

Journal:

International Journal of Refrigeration

Year:

2016

Language:

english

File:

PDF, 741 KB

english, 2016

50

Neutrophil-to-Lymphocyte Ratio and Its Association with Critical Limb Ischemia in PAOD Patients

Gary, Thomas, Pichler, Martin, Belaj, Klara, Hafner, Franz, Gerger, Armin, Froehlich, Harald, Eller, Philipp, Pilger, Ernst, Brodmann, Marianne, Pasterkamp, Gerard

Journal:

Year:

2013

Language:

english

File:

PDF, 157 KB

english, 2013

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