3
TABLE 4: HEAT EXCHANGER PRESSURE DROP
GB Models-Flow, Head Loss and Temperature Rise
20 Deg. F Rise
30 Deg. F Rise
40 Deg. F Rise
Maximum Flow Rate
Minimum Flow Rate
GPM
PD-FT
GPM
PD-FT
GPM
PD-FT
GPM
PD-FT
Deg. F
GPM
PD-FT
Deg. F
MODEL
Head
Head
Head
Head
Rise
Head
Rise
GB - 1000
83.16
5.1
55.4
2.7
41.6
1.5
154
12.2
11
42
1.5
40
GB - 1300
109.2
7.2
72.8
4.2
54.6
3.2
154
14.5
14
55
3.2
40
GB - 1500
126
10.1
84
6.3
63
4.3
154
16.3
17
64
4.3
40
GB - 1850
154
18.5
103.6
10.1
77.7
6.4
154
18.5
20
78
6.4
40
GB - 2100
n/a
n/a
117.6
14.5
88.2
8.3
154
21.3
23
89
8.3
40
GB - 2500
n/a
n/a
139.4
18.5
104.6
11.6
154
23.2
28
105
11.6
40
TABLE 3: RECOVERY CAPACITIES
Temperature Rise - Degrees °F (°C)
Input Rating
Gal/Liter
40°F
50°F
60°F
70°F
80°F
90°F 100°F 110°F 120°F
130°F
MODEL
BTU/Hr. (kW)
per Hr. (22.2°) (27.7°) (33.3°) (38.8°) (44.4°) (50°) (55.5°) (61.1°) (66.7°) (72.2°)
GW - 1000
990,000 (290.1)
LPH
9526
7620
6350
5443
4763
4234 3810
3462
3175
2930
GPH
2520
2016
1680
1440
1260
1120
1008
916
840
775
GW - 1300
1,300,000 (380.9)
LPH
12508 10006
8339
7148
6256
5560 5005
4547
4169
3848
GPH
3309
2647
2206
1891
1655
1471 1324
1203
1103
1018
GW - 1500
1,500,000 (439.5)
LPH
14432 11548
9620
8248
7216
6415 5772
5247
4812
4442
GPH
3818
3055
2545
2182
1909
1697 1527
1388
1273
1175
GW - 1850
1,850,000 (542.0)
LPH
17800 14239 11865 10172
8902
7912 7122
6471
5935
5477
GPH
4709
3767
3139
2691
2355
2093 1884
1712
1570
1449
GW - 2100
2,100,000 (615.3)
LPH
20204 16163 13472 11548 10104 8981 8082
7348
6736
6218
GPH
5345
4276
3564
3055
2673
2376 2138
1944
1782
1645
GW - 2500
2,490,000 (729.6)
LPH
23958 19168 15971 13691 11979 10648 9582
8713
7987
7371
GPH
6338
5071
4225
3622
3169
2817 2535
2305
2113
1950
Note: GW models (GB optional) are equipped with pumps capable of handling 50 equivalent feet
(15.2 m) of normal pipe fittings.
