Chilled Beam Design Guide - TROX

PRIMARY AIR COOLING
Net Sensible Heating Capacity, BTUH/LF
WATER SIDE HEATING
NET SENSIBLE HEATING
Heating Performance (4-Pipe) DID602
1000
900
800
Chart is based on 6 ft. DID602-HC-4 (4
pipe) heating with a 20˚F temperature
differential between room and primary air
and a 50˚F temperature differential
between room and entering hot water.
For other beam lengths, see the
correction factors table below.
GPMHWS
GPMHWS
700
600
500
1.5
1.0
0.8
0.6
1.5
1.0
0.8
0.6
GPMHWS
1.5
1.0
0.8
400
0.4
0.3
0.4
0.6
300
0.2
0.3
0.4
200
0.2
0.3
100
0.2
0
-100
-200
-300
-400
"A" NOZZLES
NC 15 20 25
0.3" 0.4" 0.6" 0.8" 1.0"
-500
-600
"B" NOZZLES
NC 20
0.3" 0.4"
25
30 34
0.5" 0.6" 0.7" 0.8" 0.9"1.0"
-700
"C" NOZZLES
NC 22 25 30 35 39
0.3" 0.4" 0.5" 0.6" 0.7" 0.8" 0.9" 1.0"
4.0
6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 28.0
Primary Airflow Rate, CFM/LF
30.0
Corrections for Other DID602-US-4 or DID602-HC-4 Lengths & T ENTERING WATER - T INDUCED AIR
Performance Parameter
Water Side Heating (BTUH/LF)
Max. Recommended GPM (DID602-US-4 models)
Max. Recommended GPM (DID602-HC-4 models)
Noise Level (NC)
Beam Length (Nominal Length in Feet)
4 Feet 6 Feet 8 Feet
10 Feet
Multiply by 1.04 No Correction Multiply by 0.88 Multiply by 0.85
1.5 1.5 1.5
1.5
1.5 1.5 1.5
1.5
-5 No Correction +3
+4
Primary Air Pressure Drop
Multiply by 0.85 No Correction Multiply by 1.03 Multiply by 1.15
Hot Water Pressure Loss See Figure 36 41
TENTERING HOT WATER - TINDUCED AIR
See Table 7 (page 38)
Figure 50: 45: Heating (4 Pipe) Performance, DID602-US-4 and DID602-HC-4
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