Exercise 1: Radiation Effect on Thermal ComfortIt is a common experience to feel "chilly" in winterand "warm" in summer in our homes even when thethermostat setting is kept the same. This is due tothe so called "radiation effect" resulting fromradiation heat exchange between our bodies and thesurrounding surfaces of the walls and the ceiling.Consider a person standing in a room maintained at22°C at all times. The inner surfaces of the walls,floors, and the ceiling of the house are observed tobe at an average temperature of 10°C in winter and25°C in summer.Determine the rate of radiation heat transfer betweenthis person and the surrounding surfaces if theexposed surface area and the average outer surfacetemperature of the person are 1.4 m2 and 30°C,respectively.Exercise 2: Heat Loss from a PersonConsider a person standing in a breezy room at20°C. Determine the total rate of heat transfer fromthis person if the exposed surface area and theaverage outer surface temperature of the person are1.6 m2 and 29°C, respectively, and the convectionheat transfer coefficient is 6 WN/m2-K.

MULTIPLE QUESTIONS: WE CAN ONLY ANSWER MAX ONE QUESTION SO I AM answering EXERCISE 2. GIVEN:…

Exercise 2: Heat Loss from a Person Consider a person standing in a breezy room at 20°C. Determine the total rate of heat transfer from this person if the exposed surface area and the average outer surface temperature of the person are 1.6 m2 and 29°C, respectively, and the convection heat transfer coefficient is 6 W/m2-K.

Exercise 2: Heat Loss from a Person Consider a person standing in a breezy room at 20°C. Determine the total rate of heat transfer from this person if the exposed surface area and the average outer surface temperature of the person are 1.6 m2 and 29°C, respectively, and the convection heat transfer coefficient is 6 W/m2-K.

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.50P

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