Thanks for solving these 2 problem 4. Calculate the heat transfer in kJ per hour through a solid brick wall 6m long, 2.9m high and 250mmthick, when the outer surface temperature si at 5°C and the inner surface temperature is 20°C. Thethermalconductivity of the brick is 0.6/W-°C. (Note: 1W̟= 1Joyle per sec). Answer: 2,255 kJ/hr5. A gray body with surface temperature of 700°C and a surface area of 500cm? radiates in a large roomwhose surfaces are black and maintained at 100°C. If the emissivity factor is 0.6, calculate the radiativeheat transfer between the hot surface and the room. Answer: 1491.6 W

Answered: Image /qna-images/answer/3449a259-6b68-4558-8fe8-914e618c43a1.jpg

4. Calculate the heat transfer in kJ per hour through a solid brick wall 6m long, 2.9m high and 250mm thick, when the outer surface temperature si at 5°C and the inner surface temperature is 20°C. The thermalconductivity of the brick is 0.6/W-°C. (Note: 1W̟= 1Joyle per sec). Answer: 2,255 kl/hr

4. Calculate the heat transfer in kJ per hour through a solid brick wall 6m long, 2.9m high and 250mm thick, when the outer surface temperature si at 5°C and the inner surface temperature is 20°C. The thermalconductivity of the brick is 0.6/W-°C. (Note: 1W̟= 1Joyle per sec). Answer: 2,255 kl/hr

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 91P: Calculate the rate of heat conduction out of the human body, assuming that the core internal...

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Concept explainers

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.

Question

Thanks for solving these 2 problem

4. Calculate the heat transfer in kJ per hour through a solid brick wall 6m long, 2.9m high and 250mm
thick, when the outer surface temperature si at 5°C and the inner surface temperature is 20°C. The
thermalconductivity of the brick is 0.6/W-°C. (Note: 1W̟= 1Joyle per sec). Answer: 2,255 kJ/hr
5. A gray body with surface temperature of 700°C and a surface area of 500cm? radiates in a large room
whose surfaces are black and maintained at 100°C. If the emissivity factor is 0.6, calculate the radiative
heat transfer between the hot surface and the room. Answer: 1491.6 W

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