During a heat flow measurement at an outside wall at the instantaneous time t we obtained the following values: Q = 18 W/m² T₁ = 20.0 °C Tsi = 17.5 °C Tse = -8.5°C T₂ = -10.0°C Calculate the following experimental values: Internal and external resistance, resistance of the element and the experimental U-value.

During a heat flow measurement at an outside wall at the instantaneous time t we obtained the following values: Q = 18 W/m² T₁ = 20.0 °C Tsi = 17.5 °C Tse = -8.5°C T₂ = -10.0°C Calculate the following experimental values: Internal and external resistance, resistance of the element and the experimental U-value.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.5P: To determine the thermal conductivity of a structural material, a large 15-cm-thick slab of the...

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