Engine_2014 : Electricity - 184/2299
|
|---|
| « Previous Question |
| An air-cooled refrigerated container unit using R-134a as a refrigerant has a box temperature setpoint of 32 °F, but it is currently operating with a stable supply air temperature of 35 °F. The fresh air makeup vent is closed, the unit is operating at 460 VAC/60 Hz, and the unit is in full capacity cool (modulating valve 100% open). Using the illustrated troubleshooting guide, what would be the normal range of expected discharge pressures if the ambient air temperature is 90 °F? |
| A) 150-190 psig |
| B) 160-180 psig |
| C) 190-230 psig |
| D) 200-220 psig |
loading answer...
| Comments |
|---|
| There are no comments for this question. |