Armin Hafner

Overview

Best Publications

• Development of compact heat exchangers for CO2 air-conditioning systems☆

  J Pettersen;A Hafner;G Skaugen;H Rekstad

  246
  Citations

• Review on cold thermal energy storage applied to refrigeration systems using phase change materials

  Håkon Selvnes;Yosr Allouche;Raluca Iolanda Manescu;Armin Hafner

  222
  Citations

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

  Jacek Smolka;Zbigniew Bulinski;Adam Fic;Andrzej J. Nowak

  195
  Citations

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

  Paride Gullo;Armin Hafner;Krzysztof Banasiak

  188
  Citations

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

  Krzysztof Banasiak;Armin Hafner;Trond Andresen

  186
  Citations

• Multi-ejector concept for R-744 supermarket refrigeration

  Armin Hafner;Sven Försterling;Krzysztof Banasiak

  183
  Citations

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

  Krzysztof Banasiak;Armin Hafner;Ekaterini E. Kriezi;Kenneth B. Madsen

  133
  Citations

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

  Krzysztof Banasiak;Armin Hafner

  128
  Citations

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

  Michal Palacz;Jacek Smolka;Waclaw Kus;Adam Fic

  116
  Citations

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

  Paride Gullo;Armin Hafner;Giovanni Cortella

  114
  Citations

• Potential evaluation of integrated high temperature heat pumps: A review of recent advances

  Unknown

  112
  Citations

• Experimental analysis of the R744 vapour compression rack equipped with the multi-ejector expansion work recovery module

  Michal Haida;Krzysztof Banasiak;Jacek Smolka;Armin Hafner

  108
  Citations

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

  Krzysztof Banasiak;Michał Palacz;Armin Hafner;Zbigniew Buliński

  107
  Citations

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

  Michal Palacz;Jacek Smolka;Adam Fic;Zbigniew Bulinski

  107
  Citations

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

  Michal Palacz;Jacek Smolka;Andrzej J. Nowak;Krzysztof Banasiak

  90
  Citations

• HEM and HRM accuracy comparison for the simulation of CO2 expansion in two-phase ejectors for supermarket refrigeration systems

  Michal Palacz;Michal Haida;Jacek Smolka;Andrzej J. Nowak

  80
  Citations

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

  Michal Haida;Jacek Smolka;Armin Hafner;Michal Palacz

  76
  Citations

• Heat transfer and pressure drop for in-tube evaporation of CO2

  Unknown

  69
  Citations

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

  Paride Gullo;Konstantinos M. Tsamos;Armin Hafner;Krzysztof Banasiak

  66
  Citations

• An experimental study of an ejector-boosted transcritical R744 refrigeration system including an exergy analysis

  Anas F.A. Elbarghthi;Armin Hafner;Krzysztof Banasiak;Vaclav Dvorak

  62
  Citations

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

  Jakub Bodys;Michal Palacz;Michal Haida;Jacek Smolka

  60
  Citations

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

  Jacek Smolka;Michal Palacz;Jakub Bodys;Krzysztof Banasiak

  59
  Citations

• Multi-Ejector Concept: A Comprehensive Review on its Latest Technological Developments

  Paride Gullo;Armin Hafner;Krzysztof Banasiak;Silvia Minetto

  47
  Citations

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

  Paride Gullo;Konstantinos Tsamos;Armin Hafner;Yunting Ge

  47
  Citations

• A detailed review on CO2 two-phase ejector flow modeling

  Knut Emil Ringstad;Yosr Allouche;Paride Gullo;Åsmund Ervik

  46
  Citations