Catalogue data for R-32 compressor with a displacement of 80 L/s show the capacity to be 8 tons when the suction conditions are 0.2 MPa and -20°C and condensing temperature is 50°C. The refrigerant leaves the condenser as saturated liquid. Calculate the actual volumetric efficiency and the brake work of the compressor if the compressor efficiency is 65%.
Catalogue data for R-32 compressor with a displacement of 80 L/s show the capacity to be 8 tons when the suction conditions are 0.2 MPa and -20°C and condensing temperature is 50°C. The refrigerant leaves the condenser as saturated liquid. Calculate the actual volumetric efficiency and the brake work of the compressor if the compressor efficiency is 65%.
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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Catalogue data for R-32 compressor with a displacement of 80 L/s show the capacity to be 8 tons when the suction conditions are 0.2 MPa and -20°C and condensing temperature is 50°C. The refrigerant leaves the condenser as saturated liquid. Calculate the actual volumetric efficiency and the brake work of the compressor if the compressor efficiency is 65%.
Please help me !
![100
20
200
300
400
500
600
R-32
700
800
20.
(difuoromethane)
Reference state:
h = 200.0 kkg. 1.00 kkg K)
for saturated iquid at OC
10
700,
500
8
400
p= 200 kg/m
150
300
6
10.
cp
4
8
100
80
6
60
50
60
2
40
40
30
30
20
1
0.8
10
20
0.6
15
1
0.4
-10
10
0.8
8.0
0.6
0.2
30°C
0.4
%3D
4.0
40
3.0
0.1
0.2
0.08
-50
2,0
0.06
1.5
-60
0.1
0.04
1.0
0.08
0.80
0.06
3.10 kJ{kg•K),
3.20
0.60
0.02
0.04
0.40
0.30
0.01
0.02
0.20
100
200
300
Properties computed with: NIST REFPROP
400
500
600
0.01
800
version 7.0
ENTHALPY, kJ/kg
700
Based on formulation of Tiliner-Roth and Yokozeki (1997)
PRESSURE, MPa
0.40
:00C 08-
09'0--
--0.70
060-
00
1 30
F1.50-
81.60-
#1.70
:1.90
00-
140+](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F99ee7761-4068-46c0-85f9-5c736b2e1b95%2F1d0429a9-8341-4f44-85cb-92deee1bc106%2F44w2hco_processed.png&w=3840&q=75)
Transcribed Image Text:100
20
200
300
400
500
600
R-32
700
800
20.
(difuoromethane)
Reference state:
h = 200.0 kkg. 1.00 kkg K)
for saturated iquid at OC
10
700,
500
8
400
p= 200 kg/m
150
300
6
10.
cp
4
8
100
80
6
60
50
60
2
40
40
30
30
20
1
0.8
10
20
0.6
15
1
0.4
-10
10
0.8
8.0
0.6
0.2
30°C
0.4
%3D
4.0
40
3.0
0.1
0.2
0.08
-50
2,0
0.06
1.5
-60
0.1
0.04
1.0
0.08
0.80
0.06
3.10 kJ{kg•K),
3.20
0.60
0.02
0.04
0.40
0.30
0.01
0.02
0.20
100
200
300
Properties computed with: NIST REFPROP
400
500
600
0.01
800
version 7.0
ENTHALPY, kJ/kg
700
Based on formulation of Tiliner-Roth and Yokozeki (1997)
PRESSURE, MPa
0.40
:00C 08-
09'0--
--0.70
060-
00
1 30
F1.50-
81.60-
#1.70
:1.90
00-
140+
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