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Wyszukujesz frazę "Janusz, Marcin" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Analysis of heat and mass transfer in an adsorption bed using CFD methods
Autorzy:
Janusz, Szymon
Szudarek, Maciej
Rudniak, Leszek
Borcuch, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/27312232.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
heat transfer
adsorption
CFD
mass transfer
refrigeration devices
Opis:
The trend of reducing electricity consumption and environmental protection has contributed to the development of refrigeration technologies based on the thermal effect of adsorption. This article proposes a methodology for conducting numerical simulations of the adsorption and desorption processes. Experimental data available in the literature were used as guidelines for building and verifying the model, and the calculations were carried out using commercial computational fluid dynamics software. The simulation results determined the amount of water vapor absorbed by the adsorbent bed and the heat generated during the adsorption process. Throughout the adsorption process, the inlet water vapor velocity, temperature, and pressure in the adsorbent bed were monitored and recorded. The results obtained were consistent with the theory in the literature and will serve as the basis for further, independent experimental studies. The validated model allowed for the analysis of the effect of cooling water temperature on the sorption capacity of the material and the effect of heating water temperature on bed regeneration. The proposed approach can be useful in analyzing adsorption processes in refrigeration applications and designing heat and mass exchangers used in adsorption systems.
Źródło:
Archives of Thermodynamics; 2023, 44, 2; 177--194
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on the post-weld explosive hardening of AA7075-T651 friction stir welded butt joints
Autorzy:
Kosturek, Robert
Lewczuk, Rafał
Torzewski, Janusz
Wachowski, Marcin
Słabik, Piotr
Maranda, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/27311461.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
aluminum
friction stir welding
explosives
mechanical properties
post weld treatment
aluminium
zgrzewanie tarciowe z przemieszaniem
materiały wybuchowe
właściwości mechaniczne
obróbka po spawaniu
Opis:
In this paper, the post-weld explosive hardening of a 5 mm AA7075-T651 plate welded via FSW was performed. To investigate the possibility of increasing FSW joint mechanical properties, the welded plate was explosively treated with four various explosive materials (ammonal, emulsion explosive, FOX-7, and PBX) in two different hardening systems. As part of the investigation, the observations of the surface and macrostructure of the treated plates were described. The obtained microhardness distribution allowed us to register the increase in hardness of the SZ up to 6%, but no increase in hardness of the LHZ was reported. In most cases, the influence of explosive treatment on the mechanical properties of the welded joint was disadvantageous as ultimate tensile strength and ductility were reduced. The only positive effect which was observed is the increase in the value of yield strength up to 27% corresponding to 77 MPa, achieved by explosive materials with detonation velocity below 3000 m/s.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 4; art. no. e145685
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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