Quincy Compressor QSI Series, Instruction Manual

Page: 126 / 142

Appendix A - Technical Data
124
Quincy Compressor-QSI
®
QSI 370

Standard

Full Load Operating Pressure psig 100 110 125 150
Maximum Operating Pressure psig 115 125 140 165
Minimum Operating Pressure psig
 
75
 
Maximum Ambient Operating Temperature:
Less Cabinet °F
 
120
 
With Cabinet °F
 
115
 
Minimum Ambient Operating Temperature °F
 
32
 
Compressor Drive Motor HP

75 100

Rotor Diameter mm
 
204
 
Male Rotor Speed rpm

1785 1790

Female Rotor Speed rpm

1190 1193

Rotor Tip Speed M/sec.

19.07 19.12

Inlet Capacity acfm 372 370 368 364
Displacement at Operating Speed cfm

403.1 404.2

Volumetric Efficiency % 92.3 91.5 91 90.1
Aftercooling
Heat Rejection: Fluid Cooler BTU/min. 2808 2957 3184 3581
Aftercooler BTU/min.
 
522
 
Aftercooler Approach (standard conditions) °F
 
3-5
 
Maximum Allowable Static Backpressure in./H
2
O
 
0.125
 
Fan Motor HP
 
3
 
Fan Motor rpm
 
1750
 
Fan Flow cfm
 
6800
 
Water-cooled Cooling
Recommended Inlet Water Pressure psig
 
40-100
 
Vent Fan Motor HP
 
1/9
 
Aftercooler Approach to Cooling:
Water Temperature °F
 
13-18
 
Water Flow less Aftercooler at: 50°F gpm

4.7 5.5

70°F gpm

7.1 8.9

90°F gpm

15.2 24.6

Water Flow with Aftercooler at: 50°F gpm

6.2 7.3

70°F gpm

9.2 11.5

90°F gpm

19.4 29.5

Compressor Fluid
Total Fluid Capacity gallons
 
15
 
Reservoir Fluid Capacity gallons
 
11
 
Fluid Flow gpm
 
24.5
 
Typical Fluid Carryover ppm
 
1.5-5
 
Normal Airend Discharge Temperature °F
 
175-195
 
Sound (at 1 meter)
Unenclosed (AC/WC) dB(A)
 
83/83
 
Standard Cabinet (AC/WC) dB(A)
 
79/79
 
Low Sound Cabinet (AC) dB(A)
 
76
 