Browsing Publikasjoner fra CRIStin - SINTEF Energi by Author "Banasiak, Krzysztof"
Now showing items 1-20 of 65
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1-D computational model of a motive nozzle for the R744 two-phase ejector
Banasiak, Krzysztof; Hafner, Armin; Smolka, Jacek (Chapter; Peer reviewed, 2010) -
A Concept of performance improvement for R744 two-phase ejector with bypass duct
Bodys, Jakub; Smolka, Jacek; Banasiak, Krzysztof; Palacz, Michal; Haida, Michal; Nowak, Andrzej J. (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018) -
A gas ejector for CO2 supercritical cycles
Palacz, Michal; Haida, Michal; Smolka, Jacek; Plis, Marcin; Nowak, Andrzej J.; Banasiak, Krzysztof (Journal article; Peer reviewed, 2018)he CO2 ejectors are recently often used as the main expansion device in the modern refrigeration cycles. On the other hand, according to the newest literature the implementation the ejectors into supercritical CO2 power ... -
A modified homogeneous relaxation model for CO2 two-phase flow in vapour ejector
Haida, Michal; Palacz, Michal; Smolka, Jacek; Nowak, Andrzej J.; Hafner, Armin; Banasiak, Krzysztof (Journal article; Peer reviewed, 2016)In this study, the homogenous relaxation model (HRM) for CO2 flow in a two-phase ejector was modified in order to increase the accuracy of the numerical simulations The two- phase flow model was implemented on the effective ... -
A review on recent technological advancements in muliti-ejector concept
Gullo, Paride; Hafner, Armin; Banasiak, Krzysztof; Minetto, Silvia (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018) -
Analysis of R744 refrigeration system with liquid ejectors
Singh, Simarpreet; Reddy, Amshith; Parkash, Maiya M.; Banasiak, Krzysztof; Hafner, Armin; Nekså, Petter (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018) -
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 (Peer reviewed; Journal article, 2015)In this study, the accuracy of the homogeneous equilibrium (HEM) applied to 3-D CFD-based simulations of CO2 expansion inside two-phase ejectors is presented. The HEM approach previously reported in the literature were ... -
Attaining a higher flexibility degree in CO2 compressor racks
Álvarez Pardiñas, Ángel; Contiero, Luca; Hafner, Armin; Banasiak, Krzysztof; Larsen, Lars F.S. (Science et technique du froid;, Chapter, 2020)CO2 compressor racks have shown their suitability for commercial and industrial refrigeration systems at any location and climate. Even if some references state that CO2 units can compete in capital cost with any other ... -
CFD-based design algorithm for CO2 ejectors
Ringstad, Knut Emil; Banasiak, Krzysztof; Hafner, Armin (Chapter; Peer reviewed, 2021) -
Cold storage using phase change material in refrigerated display cabinets: experimental investigation
Jokiel, Michael; Sevault, Alexis; Banasiak, Krzysztof; Næss, Erling (Sciences et technique du froid;2021/1, Chapter; Peer reviewed, 2021)Refrigerated display cabinets are the main energy consumers in supermarkets. Cold thermal energy storage (CTES) using phase change materials (PCM) can significantly reduce temperature variations in a display cabinet during ... -
Comparative study of various supermarket refrigerating systems in European climate context
Gullo, Paride; Purohit, Nilesh; Dasgupta, Mani Sankar; Hafner, Armin; Banasiak, Krzysztof (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018) -
Comparative study of various supermarket refrigerating systems in European climate context
Gullo, Paride; Purohit, Nilesh; Dasgupta, Mani Sankar; Hafner, Armin; Banasiak, Krzysztof (Science et technique du froid;2018/1, Chapter; Peer reviewed, 2018) -
Conceptual Design of Experimental Test Rig for Research on Thermo-Flow Processes During Direct Contact Condensation in the Two-Phase Spray-Ejector Condenser
MADEJSKI, Paweł; KARCH, Michał; Michalak, Piotr; Banasiak, Krzysztof (Peer reviewed; Journal article, 2024)The paper presents the conceptual design of a prototype experimental facility for mixing jet-type flow condensers investigations when the steam in exhaust gases is condensed on the water jet in the presence of CO2. The ... -
Crossing CO2 equator with the aid of multi-ejector concept: A comprehensive energy and environmental comparative study
Gullo, Paride; Tsamos, Konstantinos; Hafner, Armin; Banasiak, Krzysztof; Ge, Yunting; Tassou, Savvas A. (Journal article; Peer reviewed, 2018)The ever-stricter regulations put into effect worldwide to significantly decrease the considerable carbon footprint of commercial refrigeration sector have forced the transition to eco-friendlier working fluids (e.g. CO2, ... -
Design and simulations of refrigerated sea water chillers with CO2 ejector pumps for marine applications in hot climates
Bodys, Jakub; Hafner, Armin; Banasiak, Krzysztof; Smolka, Jacek; Ladam, Yves (Journal article; Peer reviewed, 2018)Various system configurations have been developed to improve the R744 systems under hot ambient conditions. However, stationary land applications are characterised by negligible limits on space for system equipment, unlike ... -
Design and simulations of refrigerated sea water chillers with CO2 ejector pumps for marine applications in hot climates
Bodys, Jakub; Hafner, Armin; Banasiak, Krzysztof; Smolka, Jacek; Ladam, Yves (Journal article; Peer reviewed, 2018)Various system configurations have been developed to improve the R744 systems under hot ambient conditions. However, stationary land applications are characterised by negligible limits on space for system equipment, unlike ... -
A detailed review on CO2 two-phase ejector flow modeling
Ringstad, Knut Emil; Allouche, Yosr; Gullo, Paride; Ervik, Åsmund; Banasiak, Krzysztof; Hafner, Armin (Peer reviewed; Journal article, 2020)Ejector-equipped vapor-compression systems for refrigeration and cooling, relying solely on (R744) as a natural working fluid, are perceived to be an eco-friendly and highly efficient solution for many applications. However, ... -
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 (Peer reviewed; Journal article, 2015)A multi-ejector expansion pack, intended as a substitute for a standard high-pressure electronic expansion valve (HPV), was designed, manufactured and experimentally investigated. Four different ejector cartridges were ... -
Development of a spray-ejector condenser for the use in a negative CO2 emission gas power plant
Madejski, Pawel; Banasiak, Krzysztof; Ziolkowski, Pawel; Mikielewicz, Dariusz; Mikielewicz, Jaroslaw; Kus, Thomas; KARCH, Michal; Michalak, Piotr; Amiri, Milad; Dabrowski, Pawel; Stasiak, Kamil; Subramanian, Navaneethan; Ochrymiuk, Tomasz (Peer reviewed; Journal article, 2023)One promising solution for developing low-emission power technologies is using gaseous fuel combustion in pure oxygen when the exhaust gas mixture is composed of H2O and CO2, and where CO2 is separated after steam condensation. ... -
Efficient R744 technology for supermarket heating, cooling and refrigeration - a theoretical assessment of energy advantages in various Spanish cities
Gullo, Paride; Hafner, Armin; Banasiak, Krzysztof (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018)