A Cascade refrigeration system using flash tank and intercooler is operating an evaporator with a capacity of 10 tons at a temperature of -30°C. The flash tank and intercooler is operated at 0.40 MPa. If the condensing temperature is 50°C, determine the COP and the refrigerating efficiency of the system. Draw the schematic diagram of the system and assume ideal conditions.
A Cascade refrigeration system using flash tank and intercooler is operating an evaporator with a capacity of 10 tons at a temperature of -30°C. The flash tank and intercooler is operated at 0.40 MPa. If the condensing temperature is 50°C, determine the COP and the refrigerating efficiency of the system. Draw the schematic diagram of the system and assume ideal conditions.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Can you also include the t-s and p-h and schematic diagrams?
A Cascade refrigeration system using flash tank and intercooler is operating an evaporator with a capacity of 10 tons at a temperature of -30°C. The flash tank and intercooler is operated at 0.40 MPa. If the condensing temperature is 50°C, determine the COP and the refrigerating efficiency of the system. Draw the schematic diagram of the system and assume ideal conditions.
![PRESSURE, MPa
20
4.
2.
1450
T-40°C
-30 1400
0.80 =
-060-
00
-1.30-
1.40-
OS L
1.60 -
10
8-8,8
20
009
00s
OS
00>
00€
009
8.
007
0901
006
001
002
R-134a
OSI
(1,1,1.2-tevafuoroethane)
00L
Reference state
h= 200.0 Kg. 1.00 kukg K)
for saturated liguid at OC
2.
09
8.
1.
0.8
09
20.
9'0
GL
0.4
1.
0'9
0.2
0.8
0.6
O't
0.1
0.4
0.08
-T-10°C
2.0
0.06
-20
1.5
0.2
0.04
O'L
080
0.1
09'0
0.02
0.08
0,40
0.06
50
0.01
0.04
009
450
009
0.02
Based on formulation of Tiliner Roth and Baehr (1994)
350
00€
ENTHALPY, kJ/kg
0.01
007
Properties computed with: NIST REFPROP
verinn 7.0
001](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd5a42a0c-4bf7-4c26-8f10-79e2001da430%2F2dc491cb-2381-41d5-85f3-4dc8fa99cb51%2Fvs6xa5s_processed.jpeg&w=3840&q=75)
Transcribed Image Text:PRESSURE, MPa
20
4.
2.
1450
T-40°C
-30 1400
0.80 =
-060-
00
-1.30-
1.40-
OS L
1.60 -
10
8-8,8
20
009
00s
OS
00>
00€
009
8.
007
0901
006
001
002
R-134a
OSI
(1,1,1.2-tevafuoroethane)
00L
Reference state
h= 200.0 Kg. 1.00 kukg K)
for saturated liguid at OC
2.
09
8.
1.
0.8
09
20.
9'0
GL
0.4
1.
0'9
0.2
0.8
0.6
O't
0.1
0.4
0.08
-T-10°C
2.0
0.06
-20
1.5
0.2
0.04
O'L
080
0.1
09'0
0.02
0.08
0,40
0.06
50
0.01
0.04
009
450
009
0.02
Based on formulation of Tiliner Roth and Baehr (1994)
350
00€
ENTHALPY, kJ/kg
0.01
007
Properties computed with: NIST REFPROP
verinn 7.0
001
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