A 5kW heater is in the lab, but the lab losses heat to its outside surroundings. The heat transfer rate between the lab and the outside is given by the equation dQ/dt = UA(T -To), where Ti and To are the inside and outside temperatures respectively, U is the overall heat transfer coefficient with a value of 5W/°C%2 and A is the exposed surface area of the lab with a value of 30 m2. Describe the thermodynamic operation and properties of this system and the names associated with this type of system. If the outside temperature is 10°C, then using the first law explain what the indoor temperature of the lab will become.

A 5kW heater is in the lab, but the lab losses heat to its outside surroundings. The heat transfer rate between the lab and the outside is given by the equation dQ/dt = UA(T -To), where Ti and To are the inside and outside temperatures respectively, U is the overall heat transfer coefficient with a value of 5W/°C%2 and A is the exposed surface area of the lab with a value of 30 m2. Describe the thermodynamic operation and properties of this system and the names associated with this type of system. If the outside temperature is 10°C, then using the first law explain what the indoor temperature of the lab will become.

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.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.17P: 3.17 A 1.4-kg aluminum household iron has a 500-W heating element. The surface area is . The ambient...

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3.17 A 1.4-kg aluminum household iron has a 500-W heating element. The surface area is . The ambient temperature is 21°C, and the surface heat transfer coefficient is . How long after the iron is plugged in does its temperature reach 104°C?
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