Chilled Beam Design Guide - TROX

Sensible Cooling Capacity, BTUH/LF
PRIMARY AIR COOLING SECONDARY (WATER) COOLING
TOTAL SENSIBLE COOLING
Cooling Performance (2-Pipe) DID301
750
700
650
Chart is based on 6 ft. DID301-US-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.
600
GPMCWS
550
500
GPMCWS
1.5
1.0
450
0.8
400
350
GPMCWS
1.5
1.0
0.8
0.6
0.4
0.3
0.2
300
250
1.5
1.0
0.8
0.6
0.6
0.4
0.3
0.2
200
150
0.4
0.3
0.2
"C" NOZZLES
100
NC
0.2"
20
25 30 35 39
0.3" 0.4" 0.5"
0.6" 0.7" 0.8" 0.9" 1.0"
50
NC 15
0.2"
20
0.3"
25
0.4"
30
0.5" 0.6"
35
37
0.8" 1.0"
"B" NOZZLES
0
NC 15 20 25 30 33
0.3" 0.3" 0.4" 0.6" 0.8" 1.0"
"A" NOZZLES
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
150.0
Corrections for Other DID301-US-2 Lengths & T INDUCED AIR - T ENTERING WATER
Performance Parameter
Sensible Cooling (BTUH/LF)
Max. Recommended GPM (DID301-US-2 models)
Noise Level (NC)
Primary Air Pressure Drop
Beam Length (Nominal Length in Feet)
4 Feet 6 Feet 8 Feet
10 Feet
Multiply by 1.02 No Correction Multiply by 0.97 Multiply by 0.95
1.5 1.5 1.45
1.35
-1 No Correction +1
+2
Multiply by 0.74 No Correction Multiply by 1.03 Multiply by 1.07
Chilled Water Pressure Loss See Figure 37 42
TINDUCED AIR - TENTERING CHILLED WATER
See Table 6 (page 38)
Figure 57: 52: Cooling (2 Pipe) Performance, DID301-US-2
56