Performance coefficient, n = 1 - ((273 + 24) / (273 + 129))
n = 0.26
W = 2 kcal
n Qin = W
Qin = 7.66 kCal
Qout = Qin - W = 5.66 kcal
In a certain steam engine, the boiler temperature is 129 degree C and the cold reservoir...
A Carnot engine has an efficiency of 0.445, and the temperature of its cold reservoir is 434 K. (a) Determine the temperature of its hot reservoir. (b) If 5610 J of heat is rejected to the cold reservoir, what amount of heat is put into the engine?
1. A Carnot engine has a hot reservoir at 250 degrees C, and a a cold reservoir at 25.0 degrees C. What is the efficiency of this engine? A) 10% B) 43% C) 57% D) 90% 2. A heat engine does 50 J of work and dumps 30 J of heat into the cold reservoir. How much heat was absorbed from the hot reservoir? A) 20 J B) 30 J C) 50 J D) 80 J 3. A heat engine...
Imagine you have a hot reservoir at a temperature of 89.0 °C, and cold reservoir at a temperature of 15.0 °C. Given their vast size, it is reasonable to assume the reservoirs\' temperatures will not change significantly if heat flows into or out of them. These reservoirs are then brought into thermal contact, during which 39210 J of heat flows from the hot reservoir to the cold reservoir. As a result of this heat exchange, what is the total change...
I can’t figure out 17 & 18
16) Caloulate the cold reservoir temperature of a steam engine that uses hot steam at 450°C and has a Carnot efficiency of 0.700 138 C 56.3 C 233 C 217C Coms tom 14ats Perfect Heat Engine: The Second Law of 17) What is unreasonable about the temperature? The temperature is too cold for the output of a sheam engine the local environment) The temperature ia too hot for the output of a n...
Determine the heat transferred when steam with isobarical process
from a boiler tank till boiler is left with 80% water only. The
boiler tank volume is 8 m3 and initially it has equal volumes of
steam and water at 1 Mpa
Q7/ A lower reservoir of the reversible refrigerator is maintained -30°C when ambient temperature is 30°C. The refrigerator is operated using a reversible heat engine working between 473°K and ambient temperature. Determine the ratio of heat transferred from high...
An engine has a hot reservoir temperature of 927 K and a cold reservoir temperature of 631 K. The engine operates at four-fifths maximum efficiency. What is the efficiency of the engine?
[3] A heat engine is reported to operate with 25 % efficiency when the cold reservoir is at 0° C. (a) Assuming this engine follows the Carnot cycle, what is the temperature of the hot reservoir? (b) Suppose the heat input to this engine was 10 J. Calculate the work done by this engine c) Suppose the heat input to this engine was 5). Calculate the heat rejected by this engine.
Paragraph Styles 1) Steam engines operate between a cold temperature reservoir at 30°0c and a hot temperature reservoir at 565°C. a. What is their maximum possible efficiency? b. A steam locomotive is an example of steam engine. The real efficiency of these locomotives was about 8%. Can you list a number of causes that bring the efficiency down so dramatically?
A Carnot engine operates with an efficiency of 29% when the temperature of its cold reservoir is 295 K. Assuming that the temperature of the hot reservoir remains the same, what must be the temperature of the cold reservoir in order to increase the efficiency to 33%?
An engine absorbs 1.72 kJ from a hot reservoir at 277 degree C and expels 1.17 kJ to a cold reservoir at 27 degree C in each cycle. What is the engine's efficiency? How much work is done by the engine in each cycle? What is the power output of the engine if each cycle lasts 0.296 s?