Konwekcja ciepła na płaskich powierzchniach w powietrzu atmosferycznym. Przegląd danych

• Autorzy: Oleśkowicz-Polpiel Cz.

Warianty tytułu

EN

Transfer of convective heat on flat surfaces in atmospheric air - data survey

• Języki publikacji: PL

Abstrakty

PL

Obliczanie strat i zysków ciepła na powierzchniach takich obiektów jak budynki, kolektory słoneczne, grunt, stawy i baseny kąpielowe wymaga znajomości między innymi współczynników konwekcji ciepła. W artykule przedstawiono krytyczny przegląd i porównanie dostępnych w literaturze danych dotyczących konwekcji ciepła na poziomych i pionowych powierzchniach płaskich eksponowanych na działanie powietrza atmosferycznego. Stwierdzono, że współczynniki konwekcji ciepła na powierzchniach płaskich w powietrzu atmosferycznym są wyraźnie większe od współczynników wyliczanych ze znanych zależności na konwekcję laminarną i turbulentną oraz od wyników badań w tunelach aerodynamicznych.

EN

Calculation of heat losses and gains on surfaces of various objects as buildings, solar collectors, ground, ponds and swimming pools requires the knowledge of convection coefficients (among others). The paper presents a critical review and a comparison of various data available in the literature and concerning heat convection on the flat horizontal and vertical surfaces exposed to the atmospheric environment. It was found that the convection coefficients on these surfaces are considerably higher than those obtained in the wind-tunnel experiments and calculated from the known relationships concerning the laminar and turbulent convection.

Słowa kluczowe

PL

konwekcja ciepła; powierzchnia płaska; powietrze

EN

convective heat; flat surface; air

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Ciepłownictwo, Ogrzewnictwo, Wentylacja
• Rocznik: 2009
• Tom: R. 40, nr 2
• Strony: 35--38
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Oleśkowicz-Polpiel Cz.

• Politechnika Poznańska

Bibliografia

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