MIL-HDBK-1003/7
4) Discharge flow.
5) Discharge temperature.
6) Discharge pressure.
7) Bleedoff flow.
8) Bleedoff temperature.
9) Bleedoff pressure.
10)Pump input power.
11) Pump speed.
b) As a result of calculations based on PTC 8.2 methods, the following
performance parameters can be quantified.
1) Capacity.
2) Pump total head.
3) Pump power.
4) Pump efficiency.
5) Suction requirements.
6) Available net positive suction head.
7) Specific speed.
19.1.2.8 Fans. Forced draft and induced draft fans shall be tested in accordance with
ASME Performance Test Code, PTC 11, Fans. For additional test requirements see MIL-
HDBK-1003/6.
a) Test Code PTC 11 recognizes two methods for expressing fan
performance.
1) Mass flow/specified energy.
2) Volume flow/pressure.
The mass flow/specific energy method requires velocity and static
pressure measurements at the fan inlet and outlet. Experience has shown that accurate
velocity pressure measurements at the fan outlet are at best very difficult. Therefore,
the volume flow/pressure method which does not require fan outlet velocity pressure is
recommended.
b) The following are the major measurements required for the volume
flow/pressure method.
1) Fan inlet static pressure.
2) Fan inlet velocity pressure.
3) Fan outlet static pressure.
4) Air or gas inlet temperature.
5) Fan speed.
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