A heat engine operates with reservoirs at 650° C and 15° C, but it operates at...
A heat engine operates with reservoirs at 650° C and 15° C, but it operates at 35% of its maximum possible efficiency.
A. What is the maximum efficiency?
B. What is the actual total efficiency?
C. If 1500 J of work is done by the heat engine, how much energy is extracted from the hot reservoir?
D. How much energy is exhausted?
Homework Answers
a)
max efficiency
n = 1 - T2/T1 = 1 - (273 + 15)/ (273 + 650)
n = 0.688 = 68.8 %
b)
actual efficiency
n' = 0.688* 0.35 = 24.08 %
======
c)
n' = W/Q1
0.2408 = 1500 / q1
q1 = 6229.24 J
====
d)
exhausted = 6229.24 - 1500 = 4729.2 J
=====
Comment before rate in case any doubt, will reply for sure..
Add Answer to:
A heat engine operates with reservoirs at 650° C and 15° C, but
it operates at...
A heat engine operating between energy reservoirs at 20∘C and 550 ∘C has 29 % of...
A heat engine operating between energy reservoirs at 20∘C and 550 ∘C has 29 % of the maximum possible efficiency. How much energy must this engine extract from the hot reservoir to do 1200 J of work?
A heat engine operating between energy reservoirs at 20 deg C and 620 deg C has 26 % of the maximum possible efficiency....
A heat engine operating between energy reservoirs at 20 deg C and 620 deg C has 26 % of the maximum possible efficiency. How much energy must this engine extract from the hot reservoir to do 1200 J of work?
A heat engine with an efficiency of 35% does 1200 J of work. (a) How much...
A heat engine with an efficiency of 35% does 1200 J of work. (a) How much energy (in Joules) is extracted from the hot reservoir? (b) How much energy (in Joules) is exhausted to the cold reservoir?
A Carnot heat engine operates between reservoirs at 164 ∘C and 0∘C. If the engine extracts...
A Carnot heat engine operates between reservoirs at 164 ∘C and 0∘C. If the engine extracts 22 J of energy from the hot reservoir per cycle, how many cycles will it take to lift a 12 kg mass a height of 10 m?
25. -15.17 points GioCP2 16.P.026. A reversible heat engine operates between thermal reservoirs at 864 K...
25. -15.17 points GioCP2 16.P.026. A reversible heat engine operates between thermal reservoirs at 864 K and 188 K. If 8280 נ are extracted from the hot reservoir. how much works done by the heat eng e?
Suppose that there are two very large reservoirs of water, one at a temperature of 95.0...
Suppose that there are two very large reservoirs of water, one at a temperature of 95.0 °C and one at a temperature of 17.0 °C. These reservoirs are brought into thermal contact long enough for 42130 J of heat to flow from the hot water to the cold water. Assume that the reservoirs are large enough so that the temperatures do not change significantly. What is the total change in entropy resulting from this heat exchange between the hot water...
Suppose that there are two very large reservoirs of water, one at a temperature of 89.0...
Suppose that there are two very large reservoirs of water, one at a temperature of 89.0 °C and one at a temperature of 13.0 °C. These reservoirs are brought into thermal contact long enough for 42530 J of heat to flow from the hot water to the cold water. Assume that the reservoirs are large enough so that the temperatures do not change significantly. What is the total change in entropy resulting from this heat exchange between the hot water...
An ideal heat engine has an efficiency of 18.9 percent. It operates between two heat reservoirs...
An ideal heat engine has an efficiency of 18.9 percent. It operates between two heat reservoirs differing in temperature by 67.4 C°. What is the temperature of the hot reservoir?
A heat engine operates at a temperature of 650 K. The work output is used to...
A heat engine operates at a temperature of 650 K. The work output is used to drive a pile driver, which is a machine that picks things up and drops them. Heat is then exhausted into the atmosphere, which has a temperature of 300 K. a. What is the ideal efficiency of this engine? b. The engine drives a 1200 kg weight by lifting it 50 m in 2:5 sec. What is the engine’s power output? c. If the engine...
A Carnot engine works between two heat reservoirs at temperatures Th = 360 K and Tc...
A Carnot engine works between two heat reservoirs at temperatures Th = 360 K and Tc = 240 K. (a) What is its efficiency? % (b) If it absorbs 95 J from the hot reservoir during each cycle, how much work does it do? J (c) How much heat does it give off during each cycle? J (d) What is the COP of this engine when it works as a refrigerator between the same two reservoirs?
25. -15.17 points GioCP2 16.P.026. A reversible heat engine operates between thermal reservoirs at 864 K and 188 K. If 8280 נ are extracted from the hot reservoir. how much works done by the heat eng e?
Suppose that there are two very large reservoirs of water, one at a temperature of 95.0 °C and one at a temperature of 17.0 °C. These reservoirs are brought into thermal contact long enough for 42130 J of heat to flow from the hot water to the cold water. Assume that the reservoirs are large enough so that the temperatures do not change significantly. What is the total change in entropy resulting from this heat exchange between the hot water...
Suppose that there are two very large reservoirs of water, one at a temperature of 89.0 °C and one at a temperature of 13.0 °C. These reservoirs are brought into thermal contact long enough for 42530 J of heat to flow from the hot water to the cold water. Assume that the reservoirs are large enough so that the temperatures do not change significantly. What is the total change in entropy resulting from this heat exchange between the hot water...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago