Complete Analysis of a Refrigerator Goal Solve for the performance coefficient of a refrigerator using a five- step process the includes: 1. Making a state table. 2. Making a process table. 3. Calculating the totals for Work, Heat, and Internal-Energy-Change. Identifung the P

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Chapter1: The Study Of Minerals
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Complete Analysis of a Refrigerator
Goal Solve for the performance coefficient of a refrigerator using a five-
step process the includes:
1. Making a state table.
2. Making a process table.
3. Calculating the totals for Work, Heat, and Internal-Energy-Change.
4. Identifying the heat input (cold reservoir) and output (hot reservoir).
5. Calculating the performance coefficient of the refrigerator.
Problem Shown in the figure to the right is a cyclic process undergone by.
a refrigerator. Your refrigerator shall use 3.0 moles of hellum gas
(monatomic). During the process a->b, the volume increases by a factor of
3.0.
Solution
(1) Fill in the State Table (all pressures in Pascals, all
volumes in cubic meters, all temperatures in K).
(2) Fill in the Process Table (all entries in Joules).
(3) Find the Totals:
b
Enter a number.
Pressure Volume.
a->b
b->c
(->a
Work
P
Work-
Heat
du =
T₁ = 300 K
P₁ = 100,000 Pa
Refrigerator Cycle
Heat
J
3
Temperature
isothermal
du
V
Transcribed Image Text:Complete Analysis of a Refrigerator Goal Solve for the performance coefficient of a refrigerator using a five- step process the includes: 1. Making a state table. 2. Making a process table. 3. Calculating the totals for Work, Heat, and Internal-Energy-Change. 4. Identifying the heat input (cold reservoir) and output (hot reservoir). 5. Calculating the performance coefficient of the refrigerator. Problem Shown in the figure to the right is a cyclic process undergone by. a refrigerator. Your refrigerator shall use 3.0 moles of hellum gas (monatomic). During the process a->b, the volume increases by a factor of 3.0. Solution (1) Fill in the State Table (all pressures in Pascals, all volumes in cubic meters, all temperatures in K). (2) Fill in the Process Table (all entries in Joules). (3) Find the Totals: b Enter a number. Pressure Volume. a->b b->c (->a Work P Work- Heat du = T₁ = 300 K P₁ = 100,000 Pa Refrigerator Cycle Heat J 3 Temperature isothermal du V
Solution
(1) Fill in the State Table (all pressures in Pascals, all
volumes in cubic meters, all temperatures in K).
(2) Fill in the Process Table (all entries in Joules).
(3) Find the Totals:
(4) Find the heat input (from "cold reservoir") and
the heat output (to "hot reservoir"):
(5) Find the performance coefficient of the
refrigerator:
Pressure. Volume
Enter a number.
a->b
b->c
c->a
Work
Work
Heat=
dU =
Q-hot=
Q-cold =
Coefficient =
Heat
3
Temperature
du
Transcribed Image Text:Solution (1) Fill in the State Table (all pressures in Pascals, all volumes in cubic meters, all temperatures in K). (2) Fill in the Process Table (all entries in Joules). (3) Find the Totals: (4) Find the heat input (from "cold reservoir") and the heat output (to "hot reservoir"): (5) Find the performance coefficient of the refrigerator: Pressure. Volume Enter a number. a->b b->c c->a Work Work Heat= dU = Q-hot= Q-cold = Coefficient = Heat 3 Temperature du
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