Cold Air Unit Test Bench
The cold air unit test bench is used to control test parameters while performing operational testing on the EC70 air cycle machine. Three motor-operated butterfly valves and two manuals control air flow through the ACM and secondary heat exchanger. The heat exchanger is used to ensure exact aircraft conditions are met for the ACM under test. Various sensors or ports are available to read temperatures, pressures, shaft displacement etc. by remote data system.
| S.no. | Name of Characteristic | Value of Characteristic |
|---|---|---|
| 1 | Flow of compressed air up to: | 90lbs/Min |
| 2 | Pressure of compressed air: | 150 Psig |
| 3 | Temp. Of compressed air up to: 350 Deg. C | 350 Deg. C |
| 4 | Material of construction: | All items coming in contact of the hot compressed air shall be of SS 304H Schedule- 80 only. |
| 5 | Pressure sensors having accuracy: | 0.25% |
| 6 | Temperature Sensor: | Thermocouple K-type with accuracy +/- 0.5% |
| 7 | Flow sensor: | Accuracy +/- 0.5% |
| 8 | Input power requirement: | 415V with +/- 10% variation, 3-phase, 50+/-2Hz. |
