(a) Look at planet earth in space as part of the solar system: is the earth in space an isothermalor an adiabatic system? Explain your answer.(b) A room is heated by an iron that is left plugged in. Is this a heat or work interaction? Takethe entire room, including the iron, as the system.(c) Which process requires more energy: completely vaporizing 100 kg of saturated liquid waterat 1 atm pressure or completely vaporizing 10 kg of saturated liquid water at 5 atm pressure?(d) From the combustion point of view, how does a diesel engine differ from a gasoline engine?

Answered: (a) Look at planet earth in space as…

(a) Look at planet earth in space as part of the solar system: is the earth in space an isothermal or an adiabatic system? Explain your answer.

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.

Chapter11: Heat Transfer By Radiation

Section: Chapter Questions

Problem 11.56P

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

(a) Look at planet earth in space as part of the solar system: is the earth in space an isothermal
or an adiabatic system? Explain your answer.
(b) A room is heated by an iron that is left plugged in. Is this a heat or work interaction? Take
the entire room, including the iron, as the system.
(c) Which process requires more energy: completely vaporizing 100 kg of saturated liquid water
at 1 atm pressure or completely vaporizing 10 kg of saturated liquid water at 5 atm pressure?
(d) From the combustion point of view, how does a diesel engine differ from a gasoline engine?

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