Til hovedinnhold

Krzysztof Banasiak

Forsker

Krzysztof Banasiak

Forsker

Krzysztof Banasiak
Telefon: 930 05 917
Mobil: 930 05 917
Avdeling: Termisk energi
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

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

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1422508

In this study, the accuracies of the homogeneous equilibrium (HEM) and homogeneous relaxation models (HRM) were compared. Both models were implemented in the ejectorPL computational tool. The HEM and HRM were used to simulate the carbon dioxide flow in ejectors that were designed for supermarket ref...

Forfattere Palacz Michal Haida Michal Smolka Jacek Nowak Andrzej J. Banasiak Krzysztof Hafner Armin
År 2017
Type Tidsskriftsartikkel
Publikasjon

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

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1453307

The performance of fixed ejectors installed in a multi-ejector module in a carbon dioxide refrigeration system is discussed in this paper. To analyse the module operation, three-dimensional ejector models including the inlet and outlet collecting ducts were considered. The tests were performed for t...

Forfattere Bodys Jakub Palacz Michal Haida Michal Smolka Jacek Nowak Andrzej J. Banasiak Krzysztof Hafner Armin
År 2017
Type Tidsskriftsartikkel
Publikasjon

Full scale supermarket laboratory R744 ejector supported & AC integrated parallel compression unit

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1386009

There are more than 1 million supermarkets in Europe. The annual energy consumption in supermarkets can be up to 5% of the national electricity. The cooling system is responsible for 30 to 70% of the electricity bill in a store and the heating, ventilation and AC system (HVAC) for 15 and 25%. Superm...

År 2016
Type Konferanseartikkel/Bokkapittel
Publikasjon

R744 train HVAC unit

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1386060

Currently available HVAC units for trains are commonly using either HFC-134a (75%) or HFC-407C (25%) as working fluids, which have a significant global warming potential when released into the environment. These units typically rely on inefficient direct electrical heating to cover heating demands. ...

Forfattere Hafner Armin Banasiak Krzysztof Boeck Lutz
År 2016
Type Konferanseartikkel/Bokkapittel
Publikasjon

Flexible R744-Gewerbekältelaboranlage: Kälte- und –Klimaanlagenkonfigurationen mit Ejektorunterstützung

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1450094

In Europa gibt es mehr als eine Million Supermärkte. Der jährliche Energieverbrauch in Supermärkten kann bis zu 5 % des nationalen Energieverbrauchs betragen. Das Kältesystem ist für 30 bis 70 % der Stromrechnung in Läden verantwortlich. Heizung, Lüftung und Luftklimatisierung machen 15 bis 25 % aus...

År 2016
Type Konferanseartikkel/Bokkapittel
Publikasjon

A modified homogeneous relaxation model for CO2 two-phase flow in vapour ejector

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1408082

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 computational tool called ejectorPL for fully automated and systematic compu...

Forfattere Haida Michal Palacz Michal Smolka Jacek Nowak Andrzej J. Hafner Armin Banasiak Krzysztof
År 2016
Type Tidsskriftsartikkel
Publikasjon

Parallel Work of CO2 Ejectors Installed in a Multi-Ejector Module of Refrigeration System

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1408074

A performance analysis on of fixed ejectors installed in a multi-ejector module in a CO2 refrigeration system is presented in this study. The serial and the parallel work of four fixed-geometry units that compose the multi-ejector pack was carried out. The executed numerical simulations were perform...

Forfattere Bodys Jakub Palacz Michal Haida Michal Smolka Jacek Nowak Andrzej J. Banasiak Krzysztof Hafner Armin
År 2016
Type Tidsskriftsartikkel
Publikasjon

Bahnklimatisierung mit R744 Anlagen

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1450102

Moderne Schienenfahrzeuge sind heute üblicherweise mit Klimaanlagen ausgerüstet. Ein wesentlicher Aspekt bei der Entwicklung moderner Systeme zur Klimatisierung von Schienenfahrzeugen ist die Minderung von negativen Umweltauswirkungen. Neben anderen Einflussgrößen, wie Masse, Aerodynamik, etc. spiel...

Forfattere Hafner Armin Boeck Lutz Banasiak Krzysztof
År 2016
Type Konferanseartikkel/Bokkapittel
Publikasjon

Numerical investigation of an R744 liquid ejector for supermarket refrigeration systems

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1448921

This paper presents a numerical investigation of an R744 liquid ejector applied to a supermarket refrigeration system. The use of the liquid ejector enables the operation of the evaporator in a flooded mode and recirculates the R744 liquid phase, which improves the energy efficiency of the refrigera...

Forfattere Haida Michal Smolka Jacek Palacz Michal Bodys Jakub Nowak Andrzej J. Bulinski Zbigniew Fic Adam Banasiak Krzysztof Hafner Armin
År 2016
Type Tidsskriftsartikkel
Publikasjon

R744 ejector technology future perspectives

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1408067

Carbon Dioxide, CO2 (R744) was one of the first commonly applied working fluids in the infancy of refrigeration more than 100 years ago. In contrast to ammonia it mainly disappeared after the first generation of synthetic refrigerants have been introduced to the market after 1930. One reason was tha...

År 2016
Type Tidsskriftsartikkel
Vis alle publikasjoner