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Grand panneau en bois de sapin

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Exercise

Physics Thermodynamics Heat Transfer

https://texercises.com/exercise/grand-panneau-en-bois-de-sapin/

Question

Solution

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The following quantities appear in the problem: Zeit \(t\) / Temperatur \(T\) / Arbeit \(W\) / Energie \(E\) / Leistung \(P, \Phi\) / Fläche \(A\) / Dicke \(d\) / Wärmeleitfähigkeit \(\lambda\) /

The following formulas must be used to solve the exercise: \(P = \dfrac{E}{t} = \dfrac{W}{t} = \dfrac{Q}{t} \quad \) \(\Phi = \lambda \dfrac{\Delta T}{d}A \quad \)

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Exercise:
Imaginons une très grande plaque en bois de sapin ltO d'une épaisseur de dO. Quelle énergie thermique est dissipée en tO à travers une surface de AO s'il existe une différence de température de dTO entre les deux surfaces?

Solution:
Le flux thermique à travers la surface donnée est : Phi fracDelta QDelta t -lambda fracDelta TDelta x A lc fracdTd A P En une heure la quantité de chaleur dissipée est donc : Q Phi Delta t P t Q

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Contained in these collections:

Wärmeleitung by uz

5 | 8
Wärmeleitung und Leistung by TeXercises

2 | 2

Asked Quantity: Wärme \(Q\) in Joule \(\rm J\)

Attributes & Decorations

Branches	Heat Transfer
Tags	holz, kupfer, material, physik, thermodynamik, wärme, wärmeleitung, wärmestrom, wärmetransport
Content image
Difficulty	(2, default)
Points	2 (default)
Language	(Français)
Type	Calculative / Quantity
Decoration