Experimental Investigations on Leakages in Positive Displacement Machines
Table 4
The details of the equipment/instruments used in experimentation.
Equipment/instrument
Model
Make
Uncertainty
Specification
Twin-screw compressor
RS22-7-AC
Ingersoll Rand
—
Oil flooded twin-screw compressor 22 kW, 7 bar, 140 CFM
Air receiver—horizontal
272 liter
Ingersoll Rand
—
272-liter air receiver
Data acquisition system (DAS)
34980A
Agilent
—
140 channel universal input and connectivity to lap top for real time monitoring and capturing the readings
Pressure transducer
245 series
Viatran
±0.1%
Measuring range—0 to 300 psig
T type thermocouple
TQSS-18 U-6
Omega
0.50 C
Measuring range—200 to 350°C
Barometric pressure gauge
CPG2400
Mensor
0.03%
Measuring range—8-17 psia
CAV pressure gauge
CPG2400
Mensor
0.03%
Measuring range—0-100 psig
Globe valve with actuator
GX + FIELDVUE DVC6200
Emerson
±0.5%
Minimum recommended supplied pressure: 0.3 bar (5 psig) higher than maximum actuator requirements Maximum: 10.0 bar (145 psig) or maximum pressure rating of the actuator, whichever is lower Medium: Air or natural gas Independent linearity Typical value: ±0.50% of output span