The operation of a certain heat engine takes an ideal monatomic gas through a cycle shown as the rectangle on the PV diagram of Fig. 20-25. ( a ) Determine the efficiency of this engine. Let Q H and Q L be the total heat input and total heat exhausted during one cycle of this engine. ( b ) Compare (as a ratio) the efficiency of this engine to that of a Carnot engine operating between T H and T L, where T H and T L are the highest and lowest temperatures achieved. FIGURE 20-25 Problem 69.
The operation of a certain heat engine takes an ideal monatomic gas through a cycle shown as the rectangle on the PV diagram of Fig. 20-25. ( a ) Determine the efficiency of this engine. Let Q H and Q L be the total heat input and total heat exhausted during one cycle of this engine. ( b ) Compare (as a ratio) the efficiency of this engine to that of a Carnot engine operating between T H and T L, where T H and T L are the highest and lowest temperatures achieved. FIGURE 20-25 Problem 69.
The operation of a certain heat engine takes an ideal monatomic gas through a cycle shown as the rectangle on the PV diagram of Fig. 20-25. (a) Determine the efficiency of this engine. Let QH and QL be the total heat input and total heat exhausted during one cycle of this engine. (b) Compare (as a ratio) the efficiency of this engine to that of a Carnot engine operating between TH and TL, where TH and TL are the highest and lowest temperatures achieved.
FIGURE 20-25
Problem 69.
Definition Definition Law that is the combined form of Boyle's Law, Charles's Law, and Avogadro's Law. This law is obeyed by all ideal gas. Boyle's Law states that pressure is inversely proportional to volume. Charles's Law states that volume is in direct relation to temperature. Avogadro's Law shows that volume is in direct relation to the number of moles in the gas. The mathematical equation for the ideal gas law equation has been formulated by taking all the equations into account: PV=nRT Where P = pressure of the ideal gas V = volume of the ideal gas n = amount of ideal gas measured in moles R = universal gas constant and its value is 8.314 J.K-1mol-1 T = temperature
A Carnot engine is operated between two heat reservoirs at temperatures 520 K and 300 K. If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K?
A Carnot engine is operated between two heat reservoirs at temperatures of 520 K and 300 K.
If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K?
How much mechanical work is performed by the engine during each cycle?
The internal energy E(T) of a system at a fixed volume is found to depend on the temperature T as E(T)=aT2+bT4. What will be the entropy S(T) of the system as a function of temperature?
Chapter 20 Solutions
Physics For Scientists & Engineers Vol. 3 (chs 36-44) With Modern Physics And Mastering Physics (4th Edition)
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The Second Law of Thermodynamics: Heat Flow, Entropy, and Microstates; Author: Professor Dave Explains;https://www.youtube.com/watch?v=MrwW4w2nAMc;License: Standard YouTube License, CC-BY