No. 14
ATI TDA-5A/5B Comparison Study of DOP Substitutes
|
Material
|
Block Temperature
|
Internal Pressure
|
Flow
|
Photometric Concentration
|
Results/Comments
|
| DOP |
750-760¡F |
5 psig |
10-11 lpm |
60% with metering valve
fully open |
Aerosol stream is very stable, uniform and
dry
After varying the concentration from one end of the
range to the other, aerosol is still very stable and
dry. |
| DOS |
780-790¡F |
4.75 psig |
6 lpm |
75% |
Aerosol stream is dry and uniform. However,
occasional
clogging of the block occurs from higher block
temperature |
PAO
(Emery 3004) |
760-775¡F |
5 psig |
7 lpm |
75% |
Aerosol stream is dry and uniform. Very
stable through
an entire run cycle. An increase in flow resulted in
aerosol wetting out.
Approved by FDA, DOE, US Army, Surgeon General
as DOP replacement |
| Ondina Oil |
760-780¡F |
5 psig |
7 lpm |
75% |
Aerosol stream is dry and stable. Wetting
out did not
occur until temperature was reduced to 670 F.
Pulsation did not occur until temperature reached
900¡F. GOOD REPLACEMENT FOR DOP. |
| Corn Oil |
750-760¡F |
5 psig |
10 lpm |
N/A |
Aerosol stream extremely wet. Increasing
temperature and reducing flow resulted in no aerosol
output at all.
DO NOT USE CORN OIL.
|
| Mineral Oil |
750-760¡F |
5 psig |
10 lpm |
N/A |
Aerosol stream semi-wet. Increasing the
temperature and
reducing flow resulted in drier stream of aerosol but
clogged the block very quickly. |
