An engine is supposed to operate between two reservoirs at...

An engine is supposed to operate between two reservoirs at temperature $727^{\circ} \mathrm{C}$ and $227^{\circ} \mathrm{C}$. The maximum possible efficiency of such an engine is
(A) $(3 / 4)$
(B) $(1 / 4)$
(C) $(1 / 2)$
(D) 1

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Carnot Efficiency

Carnot efficiency defines the theoretical maximum efficiency that any heat engine can achieve when operating between two reservoirs. It is calculated using the formula ? = 1 - (T_cold/T_hot), where temperatures must be in Kelvin. This concept is fundamental in thermodynamics for understanding the limits of energy conversion.

Absolute Temperature Scale

Thermodynamic calculations require the use of absolute temperature scales, such as Kelvin, as they provide a true zero point—absolute zero—making the relationships in energy conversion and efficiency calculations accurate. Converting from Celsius to Kelvin is essential in these formulas to ensure the correctness of the results.

Heat Engine Efficiency

Heat engine efficiency is a measure of how well an engine converts heat energy from a high-temperature reservoir into work while discarding some heat to a low-temperature reservoir. This concept is central to studying both practical and theoretical limits of energy systems in thermodynamics.

Transcript

Please give Ace some feedback