Analiza modeli opisujących wrzenie w przepływie w kanałach konwencjonalnych

• Autorzy: Jakubowska Blanka

Identyfikatory

DOI

10.15199/8.2020.4.1

Warianty tytułu

EN

Analysis of flow boiling correlations for conventional channels

• Języki publikacji: PL

Abstrakty

PL

W artykule przedstawiona została analiza wybranych korelacji pozwalających na wyznaczenie współczynników przejmowania ciepła podczas wrzenia w przepływie, które przeznaczone są dla kanałłów o średnicach konwencjonalnych. Przedstawiona w pracy analiza została wykonana na podstawie badań eksperymentalnych dostępnych w literaturze, które prowadzone były dla pełnego zakresu zmiany stopnia suchości oraz stosunkowo szerokiego zakresu zmiany prędkości masowej. Zebrana baza danych eksperymentalnych zawiera dziesięć czynników chłodniczych, takich jak: NH 3 , CO 2, R290, R600a, R1234yf, R134a, R245fa, R236fa, R152a oraz HFE7000. Zebraną i usystematyzowaną bazę danych eksperymentalnych porównano z dostępnymi w literaturze korelacjami opisującymi wrzenie w przepływie. W przedstawionych w pracy obliczeniach wykorzystanych zostało dziewięć modeli, tj. ogólną zależność Fanga i innych, Chena, Bertscha i innych, Shaha, Gungora i Wintertona, zmodyfikowaną korelację Gungora i Wintertona, Kima i Mudawara, Wojtana i innych oraz Lillo i innych.

EN

In the paper has been presented the analysis of selected correlations that allow the determination of heat transfer coefficients during flow boiling in conventional diameter channels. The analysis, which are presented, was carried out on the basis of experimental studies available in the literature, which were conducted for a full range of quality variation and a relatively wide range of mass velocity. The collected experimental database contains ten refrigerants such as: NH3, CO2, R290, R600a, R1234yf, R134a, R245fa, R236fa, R152a and HFE7000. The collected and systematized experimental database was compared with the correlations available in the literature, which modelling heat transfer during flow boiling. Nine models were used in the calculations presented in the paper, i.e. the general Fang et al. correlation, Chen, Bertsch et al., Shah, Gungor and Winterton, modified Gungor and Winterton, Kim and Mudawar, Wojtan et al. , and Lillo et al.

Słowa kluczowe

PL

wrzenie w przepływie; kanał konwencjonalny; naturalne czynniki chłodnicze; syntetyczne czynniki chłodnicze; współczynnik przejmowania ciepła

EN

flow boiling; conventional channels; synthetic refrigerants; natural refrigerants; heat transfer coefficient

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Chłodnictwo : organ Naczelnej Organizacji Technicznej
• Rocznik: 2020
• Tom: R. 55, nr 4
• Strony: 9--18
• Opis fizyczny: Bibliogr. 50 poz., rys., tab.

Twórcy

autor

Jakubowska Blanka

• Politechnika Gdańska, Wydział Mechaniczny, Katedra Energetyki i Aparatury Przemysłowej

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).