SpacePak Chiller

Heat exchanger head lossWater onl

SCM-036

7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.02

3

4

5

6

7

8

9

10

5

7

9

11

13

15

17

19

21

23

25

WATER HEAD LOSS

Flow GPM

Pres

sure

Dro

p PS

I

Pre

ssu

re D

rop

Ft

WC

Flow Pressure Drop

GPM PSI Ft WC

7.0 2.7 6.3

7.5 3.3 7.6

8.0 3.9 9.0

8.5 4.6 10.5

9.0 5.3 12.2

9.5 6.0 13.9

10.0 6.9 15.8

10.5 7.7 17.8

11.0 8.6 19.9

11.5 9.6 22.1

12.0 10.6 24.4

SCM-060

10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.06

7

8

9

10

11

12

13

14

15

16

17

13

15

17

19

21

23

25

27

29

31

33

35

37

39WATER HEAD LOSS

Flow, GPM

Pres

sure

Dro

p PS

I

Pre

ssur

e D

rop

Ft

WC

Flow Pressure Drop

GPM PSI Ft WC

10.0 7.3 16.7

10.5 8.0 18.5

11.0 8.8 20.3

11.5 9.6 22.2

12.0 10.5 24.2

12.5 11.4 26.3

13.0 12.4 28.5

13.5 13.3 30.7

14.0 14.4 33.1

14.5 15.4 35.5

15.0 16.5 38.0

• I was just checking up on some flow-switch samples we’ll be receiving, and went to the Cole Parmer material compatibility website http://www.coleparmer.com/Chemical-Resistance

• I checked PVC against ethylene glycol and it received an A, (as did CPVC but that is to be expected), but then checked Propylene glycol, and it received only a C, which states; Moderate Effect, not recommended for continuous use. Softening, loss of strength, swelling may occur.

• (but with a sidenote that it is satisfactory up to 72ºF/22ºC)• This was the same for PVC and CPVC, which I know is commonly used in this application. We should

keep this in mind when making recommendations, that PVC/CPVC is not suitable for Propylene glycol (no point splitting hairs and saying okay for cooling but not heating)

• • I will check up on the plastic used inside the SCM chillers, to see what the material is and if there

should be concern.• • Pex was not listed by name, or by it’s generic (cross linked) HDPE, but other websites state it is

suitable for EGW or PGW.• • Just some more information for our reference toolbox.•