Please do not solve the question in the 2nd image. From image 1, Total entropy change: Ssystem + Ssurrounding = Sisolated What does it mean by Ssystem and Ssurrounding? Able to explain it using the question shown in the 2nd image? Is the question asking to find Ssystem or Ssurrounding? i am able to obtain the answer by finding the Rate of Entropy change in the high Temperature side and low temperature side. But i do not know whether it is the entropy for the system or surrounding

Understanding Motor Controls
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ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter54: The Operational Amplifier
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Please do not solve the question in the 2nd image.

From image 1,

Total entropy change:

Ssystem + Ssurrounding = Sisolated

What does it mean by Ssystem and Ssurrounding? Able to explain it using the question shown in the 2nd image? Is the question asking to find Ssystem or Ssurrounding?

i am able to obtain the answer by finding the Rate of Entropy change in the high Temperature side and low temperature side. But i do not know whether it is the entropy for the system or surrounding.

Total entropy change in this “isolated system" is
AS
system
+ AS
surroundigs
= AS.
isolated
>0
=S
gen
Transcribed Image Text:Total entropy change in this “isolated system" is AS system + AS surroundigs = AS. isolated >0 =S gen
3. A completely reversible heat pump produces heat at a rate of 300
kW to warm a house maintained at 24 °C. The exterior air which is
24°C
at 7 °C serves as a source. Calculate the rate of entropy change of
the two reservoirs and determine if this heat pump satisfies the
second law according to the increase of entropy principle.
300 kW
Win
HP
[Ans: 1.01 kW/K, -1.01 kW/k, 0 kW/K]
7°C
Transcribed Image Text:3. A completely reversible heat pump produces heat at a rate of 300 kW to warm a house maintained at 24 °C. The exterior air which is 24°C at 7 °C serves as a source. Calculate the rate of entropy change of the two reservoirs and determine if this heat pump satisfies the second law according to the increase of entropy principle. 300 kW Win HP [Ans: 1.01 kW/K, -1.01 kW/k, 0 kW/K] 7°C
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