Chilled Beam Design Guide - TROX

Sensible Cooling Capacity, BTUH/LF
PRIMARY AIR COOLING SECONDARY (WATER) COOLING
TOTAL SENSIBLE COOLING
Cooling Performance (2-Pipe) DID601
1200
1120
1040
960
Chart is based on 6 ft. DID601-HC-2 (2
pipe) cooling with a 20˚F temperature
differential between room and primary air
and an 18˚F temperature differential
between room and entering chilled water.
For other beam lengths, see the
correction factors table below.
Performance at water flow rates > 1.5
GPM is only achievable with DID601-HC
models.
GPM CWS
880
3.0
2.5
800
GPM CWS
GPM CWS
2.0
1.5
720
3.0
2.5
1.0
0.8
640
560
3.0
2.5
2.0
1.5
2.0
1.5
1.0
0.8
0.6
0.6
0.4
0.3
480
1.0
0.8
0.4
0.2
400
320
0.6
0.4
0.3
0.3
0.2
0.2
240
160
NC 22
"C" NOZZLES
25 30 35 39
80
0
NC 20 25
0.3" 0.4" 0.5" 0.6"
NC 15 20 25
"A" NOZZLES
0.3" 0.4" 0.6" 0.8" 1.0"
0.3" 0.4" 0.5" 0.6" 0.7" 0.8" 0.9" 1.0"
30 34
"B" NOZZLES
0.7" 0.8" 0.9"1.0"
2.0
3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0
Primary Airflow Rate, CFM/LF
15.0
Corrections for Other DID601-US-2 or DID601-HC-2 Lengths & T INDUCED AIR - T ENTERING WATER
Performance Parameter
Sensible Cooling (BTUH/LF)
Max. Recommended GPM (DID601-US-2 models)
Max. Recommended GPM (DID601-HC-2 models)
Noise Level (NC)
Primary Air Pressure Drop
Chilled Water Pressure Loss
T INDUCED AIR - T ENTERING CHILLED WATER
Beam Length (Nominal Length in Feet)
4 Feet 6 Feet 8 Feet
10 Feet
Multiply by 1.03 No Correction Multiply by 0.91 Multiply by 0.90
1.35 1.15 1.0
0.9
2.65 2.25 2.0
1.8
-5 No Correction +3
+4
Multiply by 0.85 No Correction Multiply by 1.03 Multiply by 1.15
See Figure 37 32 (DID601-US-2) or Figure 39 34 (DID601-HC-2)
See Table 6 (page 38)
Figure 45: 40: Cooling (2 Pipe) Performance, DID601-US-2 and DID601-HC-2
44