Evaporator Flow and Pressure Considerations

Modelc

Design flow

Design Δ P

Standard pump power

To Process pressure

 

gpm

lpm

psig

kPa

hp

kW

psi

kPa

bars

-A, 2 hp

4.6

17.5

4.4

30.4

1

0.746

34.1

235.3

2.4

-A, 3.5 hp

7.9

29.9

4.9

33.7

1

0.746

33.0

227.5

2.3

-A, -R, 5 hp

11.6

43.8

2.0

13.7

1

0.746

34.9

240.8

2.4

-A, -R, 7.5 hp

15.7

59.6

2.8

19.0

1

0.746

32.7

225.7

2.3

-A, -R, 10 hp

23.8

90.1

5.1

35.2

2

1.492

43.4

299.0

3.0

-A, -R, 15 hp

34.9

132.1

6.1

41.8

2

1.492

38.0

262.1

2.6

-A, -R, 20 hp

46.5

175.9

7.1

49.0

5

3.73

54.0

372.3

3.7

-A, -R, 25 hp

57.2

216.4

8.1

55.9

5

3.73

52.0

358.5

3.6

-A, -R, 30 hp

70.2

265.6

10.5

72.4

5

3.73

47.5

327.5

3.3

-R 40 hp

88.6

335.4

8.2

56.5

7.5

5.59

55.0

379.2

3.8

 

 

 

 

 

 

 

 

 

 

-W 2 hp

5.1

19.1

5.7

39.1

1

0.746

32.9

226.6

2.3

-W 3.5 hp

8.6

32.7

6.0

41.2

1

0.746

31.7

218.5

2.2

-W 5 hp

12.6

47.7

2.3

16.00

1

0.746

34.3

236.2

2.4

-W 7.5 hp

17.0

64.5

3.1

21.4

1

0.746

32.0

220.3

2.2

-W 10 hp

25.7

97.4

6.3

43.3

2

1.492

41.4

285.3

2.9

-W 15 hp

38.1

144.1

7.0

48.1

2

1.492

35.5

244.4

2.4

-W 20 hp

50.4

190.8

8.8

60.3

5

3.73

52.0

358.5

3.6

-W 25 hp

61.7

233.7

9.0

62.1

5

3.73

49.0

337.9

3.4

-W 30 hp

76.2

288.5

10.8

74.1

5

3.73

43.0

296.5

3.0

-W 40 hp

98.4

372.4

8.2

56.5

7.5

5.59

55.0

379.2

3.8

c-A – Air-cooled; -W – Water-cooled; -R – Remote Air-cooled.

Pressure is proportional to flow. Recirculation pump is required for values exceeding those listed.

Recirculation Pump Specifications

HP

Recirc. power

 

Flow Rate

 

Δ pressure

 

 

 

 

 

 

 

 

 

hp

kW

gpm

lpm

psi

kPa

5

0.75

0.373

13.0

49.2

2.3

16.0

7.5

0.75

0.373

17.0

64.3

3.1

21.4

10

0.75

0.595

26.0

98.4

6.3

43.3

15

0.75

0.595

38.0

143.8

7.0

48.0

20

2.0

1.492

50.0

189.2

8.8

60.3

25

2.0

1.492

63.0

238.4

9.0

62.0

30

2.0

1.492

76.0

287.6

10.8

74.1

40

3.0

2.238

98.0

370.9

8.2

56.5

2-40 HP Portable Chillers

Chapter 7: Appendix

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Page 60 Page 62
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Sterling A0554831 manual Evaporator Flow and Pressure Considerations, Recirculation Pump Specifications
Page 60 Page 62

A0554831 specifications

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