M02
J40
M6-
04
WDAT-3
2.160-3.660
- E L E C T R I C AL D AT A -
18
INTERNAL EXCHANGER PRESSURE DROP
10
20
30
40
50
60
70
20
30
40
50
60
70
80
90
100
Q [l/s]
∆∆∆∆
P
[k
Pa]
2
.1
60
2
.1
80
-
2.
20
0
2
.2
20
2
.2
50
2
.2
80
-
2.
32
0
2.
30
0
- 2
.3
40
-
2.
36
0
- 2
.3
90
-2
.4
20
2
.4
50
-
2.
48
0
Q
MIN
[l/s] Q
MAX
[l/s]
2.160
11.6
20.2
2.180
15.5
35.4
2.200
15.5
35.4
2.220
18.6
35.4
2.250
17.2
35.4
2.280
27.3
53.6
2.300
24.1
53.6
2.320
27.3
53.6
2.340
24.1
53.6
2.360
24.1
53.6
2.390
24.1
53.6
2.420
24.1
53.6
2.450
34.4
64.4
2.480
34.4
64.4
30
40
50
60
70
80
20
30
40
50
60
70
80
90
100
110
3.4
80
3.5
00
-
3.5
40
-
3.6
30
-
3.6
30
Q
MIN
[l/s] Q
MAX
[l/s]
3.480
33.7
65.0
3.500
31.6
74.0
3.540
31.6
74.0
3.630
31.6
74.0
3.660
31.6
74.0
FOULING CORRECTION FACTOR
INTERNAL EXCHANGER
m² °C/W
Cooling capacity correction factors
Cooling capacity correction factors
0.44 x 10^(-4)
1.00
1.00
0.88 x 10^(-4)
0.97
0.99
1.76 x 10^(-4)
0.94
0.98
CORRECTION FACTOR FOR ANTIFREEZE SOLUTIONS
% ethylene glycol by weight
5%
10%
15%
20%
25%
30%
35%
40%
Freezing
temperature
°C
-2,0 -3,9 -6,5 -8,9 -11,8 -15,6 -19,0 -23,4
Safety
temperature
°C
3,0 1,0 -1,0 -4,0 -6,0 -10,0 -14,0 -19,0
Cooling
Capacity
Factor
Nr
0,995 0,990 0,985 0,981 0,977 0,974 0,971 0,968
Compressor
input
Factor
Nr
0,997 0,993 0,990 0,988 0,986 0,984 0,982 0,981
Internal
exchanger
Glycol
solution
flow
Factor
Nr
1,003 1,010 1,020 1,033 1,050 1,072 1,095 1,124
Pressure
drop
Factor
Nr
1,029 1,060 1,090 1,118 1,149 1,182 1,211 1,243
The correction factors shown refer to water and glycol ethylene mixes used to prevent the formation of frost on the exchangers in the
water circuit during inactivity in winter.
OVERLOAD AND CONTROL DEVICE CALIBRATION
OPEN CLOSED VALUE
High pressure switch
kPa
1730
1170
--
Low pressure switch
kPa
70
170
--
Antifreeze protection
°C
3
5,5
--
High pressure safety valve
kPa
--
--
2700
Low pressure safety valve
kPa
--
--
1650
Max no. of compressor starts per hour
Nr
--
--
6
High compressor discharge temperature safety thermostat
°C
--
--
120
EVAPORATOR PRESSURE DROP LIMIT. CAUTION:
DO NOT USE UNDER THIS LIMIT.
EXCHANGER PRESSURE DROP LIMIT. CAUTION: DO NOT
USE UNDER THIS LIMIT
Summary of Contents for WDAT-3 2.160
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