Question

In: Physics

8-12)A heat engine operates in a Carnot cycle between 84.0°C and 355°C. It absorbs 21,600 J...

8-12)A heat engine operates in a Carnot cycle between 84.0°C and 355°C. It absorbs 21,600 J of energy per cycle from the hot reservoir. The duration of each cycle is 3.00 s.

(a) What is the mechanical power output of this engine?
kW

(b) How much energy does it expel in each cycle by heat?
kJ

12)A Carnot engine operates between 105°C and 18°C. How much ice can the engine melt from its exhaust after it has done 4.0 ✕ 10⁴ Jof work? (The latent heat of fusion for water is 3.33 ✕ 10⁵ J/kg.)

Solutions

Expert Solution

Heat absorbed during each cycle is

Time taken for each cycle is

Efficienty of heat engine operating in a carnot cycle is

a) Mechanical power output of the engine is

b)Energy expeled in each cycle is

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12)

Work done by engine is

Exhaust energy is used to melt the ice.

Amount of ice melted by engine's exhaust is

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genius_generous answered 1 year ago

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