Autor: Andrzejczyk, Rafał - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Heat transfer and pressure drop characteristics of the silicone-based plate heat exchanger
Autorzy:: Muszyński, Tomasz
Andrzejczyk, Rafał
Park, Il Wong
Dorao, Carlos Alberto
Powiązania:: https://bibliotekanauki.pl/articles/240347.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heat transfer coefficient
heat exchangers
enhanced surface
Wilson plot method
współczynnik wnikania ciepła
wymienniki ciepła
czynnik chłodniczy
metoda Wilsona
Opis:: The paper presents an experimental investigation of a silicone based heat exchanger, with passive heat transfer intensification by means of surface enhancement. The main objective of this paper was to experimentally investigate the performance of a heat exchanger module with the enhanced surface. Heat transfer in the test section has been examined and described with precise measurements of thermal and flow conditions. Reported tests were conducted under steady-state conditions for single-phase liquid cooling. Proposed surface modification increases heat flux by over 60%. Gathered data presented, along with analytical solutions and numerical simulation allow the rational design of heat transfer devices.
Źródło:: Archives of Thermodynamics; 2019, 40, 1; 127-143
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Thermal and economic investigation of straight and U-bend double tube heat exchanger with coiled wire turbulator
Autorzy:: Andrzejczyk, Rafał
Muszyński, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/239983.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: NTU – number of transfer units
heat exchanger
heat transfer coefficient
energy efficiency
wymiennik ciepła
współczynnik wnikania ciepła
efektywność energetyczna
metoda NTU
Opis:: Experimental research has been carried out for four individual heat exchanger constructions, i.e., plain double tube, turbulized double tube, plain U-bend and U-bend with turbulator. Tests were made for the water-water system. The study covered a wide measuring range, i.e., Re = 800–9000 – on the shell side, for a constant cold water temperature of 9°C and hot water of 50°C. The heat exchangers were made from copper tubes with external diameter of 10 mm and 18 mm respectively and wall thickness of 1 mm. The helicoidal vortex generator was made from brass wire with a diameter of 2.4 mm, coil diameter of 13 mm and pitch of 11 mm. For these geometries, the values of pressure drop, heat flux and heat transfer coefficient were determined. Wire coil turbulator increased the heat transfer coefficient (HTC) over 100% and pressure drop up by 100%. The comparison of heat transfer efficiency was performed based on the number of transfer units-effectivenes (NTU-ε) method. The modified construction achieved a similar efficiency. Economic analysis of wire coil turbulator was made to validate its use in the system. It showed that a coiled wire turbulator can greatly decrease the investment cost of the double tube heat exchanger while maintaining transferred heat at a constant level.
Źródło:: Archives of Thermodynamics; 2019, 40, 2; 17-33
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Andrzejczyk, Rafał" wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język