effect of enhanced evaporative cooling on the performance
TRANSCRIPT
Water injection pipe
Valve
Rotameter
Hea
d ex
chan
ger
Pump
Cellulose media pad
Water tank
Water sump
Evaporative cooling system
Air cooled condenser
Temperature sensor
Window type A/C
Digital power meter
Pressure gauge
Temperature sensor
Digital Anemometer
Electrical heater
Centrifugal fan Humidifier
Variac
RH sensor
DBT sensor
RH sensor
DBT sensor
Data logger
Axial fan
Variac
40 160
150
140 35
30
25
20
15
10 5
0
130 120
110
100 90
80 70
60 50
40 30
10
10
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
50
45
40
35
30
25
20
15
10
5
Abs
olut
e hu
mid
ty (g
kg-1
)
With evaporative Without evaporative 45°C 50°C 55°C
RH
(%)
100
90
80
70
60
50
40
30
20
Dry bulb (°C)
100
90
80
70
60
50
40
30
20
50
45
40
35
30
25
20
15
10
5
Abs
olut
e hu
mid
ty (g
kg-1
)
With evaporative Without evaporative
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
Dry bulb (°C)
RH
(%
)
10
10
10
40 160
150
140
130 120
110
100
60
90 80
70
50 40
20 30
35
30
25
15
20
5 0
1 msec-1 2 msec-1 3 msec-1
50
40
30
20
10 9.0 8.0 7.0 6.0 5.0 4.0
Without evaporative
With evaporative
With evaporative and HE
3.92 bar, -7°C
19.91, 43°C
19.91 bar, 43°C
4 bar, -6°C 4.0 bar, -0.5°C
24.64 bar, 58°C
4.98 bar, 0°C
19.3 bar, 80°C
19.3 bar, 80°C
4.89 bar, 80°C
19.85 bar, 80°C
24.75 bar, 104°C
90 80
(a)
(c) 50
40
30
20
10 9.0 8.0 7.0 6.0 5.0 4.0
(bar
)
5.01 bar, 0.8°C
20.61 bar, 43.3°C 21.41 bar, 46°C
5.2 bar, 2°C
30.4 bar, 71°C
20.7 bar, 82.1°C
5.82 bar, 4.5°C 5.11 bar, 5.2°C
5.67 bar, 15°C
30.6 bar, 119°C
21.6 bar, 84.8°C
4.93 bar, 3.8°C
140 160 180 200 220 240 260 280 300 320 340 360 390 400 420 440 460 480 500 520 540 560
KJ kg-1
(bar
)
50
40
30
20
10 9.0 8.0 7.0 6.0 5.0 4.0
(b)
4.61 bar, -1.7°C
4.86 bar, -1°C
19.63 bar, 41.3°C
19.91 bar, 43°C
19.7 bar, 81.2°C
5.47 bar, 2.5°C
20.06 bar, 83.7°C
27.21 bar, 62°C 27.98 bar, 113°C
5.3 bar, 11.5°C 4.75 bar, 3°C 4.6 bar, 1.6°C
