
18
ENG
“ultimateSAM - design”+03U0071EF - rel. 2.0 - 20150301
Manifold Backpressure Constant (A) Conguration“H” kPa (in H₂O)
Width Code
A B C D E F G H I J K L M N O P Q R
Height
Code
A 4.47 1.63 0.846 0.524 0.362 0.268 0.210 0.171 0.144 0.124 0.109 0.098 0.089 0.082 0.076 0.072 0.068 0.065
(3.7) (1.4) (0.70) (0.44) (0.30) (0.22) (0.17) (0.14) (0.12) (0.10) (0.09) (0.08) (0.07) (0.07) (0.06) (0.06) (0.06) (0.05)
B 2.13 0.786 0.416 0.264 0.188 0.144 0.116 0.098 0.085 0.076 0.069 0.064 0.060 0.057 0.055 0.052 0.051 0.049
(1.8) (0.65) (0.35) (0.22) (0.16) (0.12) (0.10) (0.08) (0.07) (0.06) (0.06) (0.05) (0.05) (0.05) (0.05) (0.04) (0.04) (0.04)
C 1.32 0.496 0.268 0.175 0.128 0.101 0.084 0.073 0.065 0.060 0.056 0.053 0.050 0.048 0.047 0.046 0.045 0.044
(1.1) (0.41) (0.22) (0.15) (0.11) (0.08) (0.07) (0.06) (0.05) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04)
D 0.961 0.366 0.202 0.135 0.101 0.082 0.070 0.062 0.056 0.052 0.049 0.047 0.046 0.044 0.043 0.043 0.042 0.042
(0.80) (0.30) (0.17) (0.11) (0.08) (0.07) (0.06) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03)
E 0.772 0.297 0.167 0.114 0.087 0.071 0.062 0.056 0.051 0.048 0.046 0.045 0.043 0.042 0.042 0.041 0.041 0.040
(0.64) (0.25) (0.14) (0.09) (0.07) (0.06) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03)
F 0.664 0.259 0.147 0.102 0.079 0.066 0.058 0.052 0.049 0.046 0.044 0.043 0.042 0.041 0.041 0.040 0.040 0.039
(0.55) (0.22) (0.12) (0.08) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
G 0.599 0.235 0.135 0.094 0.074 0.062 0.055 0.050 0.047 0.045 0.043 0.042 0.041 0.040 0.040 0.039 0.039 0.039
(0.50) (0.20) (0.11) (0.08) (0.06) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
H 0.559 0.221 0.128 0.090 0.071 0.060 0.053 0.049 0.046 0.044 0.043 0.041 0.041 0.040 0.040 0.039 0.039 0.039
(0.46) (0.18) (0.11) (0.07) (0.06) (0.05) (0.04) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
I 0.533 0.212 0.123 0.087 0.069 0.059 0.052 0.048 0.046 0.044 0.042 0.041 0.040 0.040 0.039 0.039 0.039 0.038
(0.44) (0.18) (0.10) (0.07) (0.06) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
J 0.517 0.206 0.120 0.085 0.068 0.058 0.052 0.048 0.045 0.043 0.042 0.041 0.040 0.040 0.039 0.039 0.038 0.038
(0.43) (0.17) (0.10) (0.07) (0.06) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
K 0.506 0.202 0.118 0.084 0.067 0.057 0.051 0.047 0.045 0.043 0.042 0.041 0.040 0.039 0.039 0.039 0.038 0.038
(0.42) (0.17) (0.10) (0.07) (0.06) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
L 0.499 0.199 0.117 0.083 0.066 0.057 0.051 0.047 0.045 0.043 0.042 0.041 0.040 0.039 0.039 0.039 0.038 0.038
(0.41) (0.17) (0.10) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
M 0.494 0.198 0.116 0.083 0.066 0.057 0.051 0.047 0.045 0.043 0.041 0.041 0.040 0.039 0.039 0.039 0.038 0.038
(0.41) (0.16) (0.10) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
N 0.491 0.197 0.116 0.082 0.066 0.057 0.051 0.047 0.044 0.043 0.041 0.040 0.040 0.039 0.039 0.039 0.038 0.038
(0.41) (0.16) (0.10) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
O 0.490 0.196 0.115 0.082 0.066 0.056 0.051 0.047 0.044 0.043 0.041 0.040 0.040 0.039 0.039 0.038 0.038 0.038
(0.41) (0.16) (0.10) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
P 0.488 0.195 0.115 0.082 0.066 0.056 0.051 0.047 0.044 0.043 0.041 0.040 0.040 0.039 0.039 0.038 0.038 0.038
(0.41) (0.16) (0.10) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
Q 0.488 0.195 0.115 0.082 0.066 0.056 0.051 0.047 0.044 0.043 0.041 0.040 0.040 0.039 0.039 0.038 0.038 0.038
(0.41) (0.16) (0.10) (0.07) (0.05) (0.05) (0.04) (0.04) (0.04) (0.04) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03) (0.03)
Tab. 4.f
Because each inlet adapter for the ultimateSAM distributor has a unique ow
characteristic, its back pressure (PB2) will depend upon the humidication
load (H), as shown in the equation below.
PB2 = B
2
PB2: backpressure in kPa (in H2O)
B : constant in kPa (in H2O)
H : humidication load in kg/hr (lb/hr)
Note: for the SA0 the value of B is constant and is equal to 0.44 kPa
Table 4.f gives the value of the constant “B” for each inlet adapter. The
calculated value may vary ±10% or ±0.1 kPa (½ in H2O), whichever is greater.
Table 4.f also shows the maximum humidication load for each inlet adapter.
Note: While threaded adapters are included on the table, the tubing
adapters (SAKIT*****) would be used for most atmospheric
humidier applications.
Inlet Max. load kg/hr (lb/hr) Constant“B”kPa (in H₂O)
SAKIE441*0 150 (330) 2.6 (2.2)
SAKIE641*0 350 (770) 0.44 (0.37)
SAKIE841*0 600 (1320) 0.13 (0.11)
SAKIE941*0 1200 (2640) 0.018 (0.01)
SAKIP441*0 150 (330) 1.7 (1.4)
SAKIP641*0 350 (770) 0.29 (0.24)
SAKIP841*0 600 (1320) 0.090 (0.07)
SAKIP941*0 1200 (2640) 0.012 (0.01)
SAKIT40100 250 (550) 0.55 (0.46)
SAKIT40200 500 (1100) 0.21 (0.17)
SAKIT40400 1000 (2200) 0.054 (0.04)
SAKIT80100 1200 (2640) 0.000 (0.00)
SAKIX80100 1200 (2640) 0.001 (0.00)
Tab. 4.g
The connecting hoses and/or pipes between the ultimateSAM distributor
and the atmospheric humidier will generate additional backpressure (PB3)
that must be considered. If the steam is pressurised this will be equal to 0,
otherwise it can be calculated as follows:
PB3 = C*L
100
PB3: backpressure in kPa (in H2O)
C: constant in kPa/m (in H2O/ft)
L: hose length in m (ft)
H: humidication load in kg/hr (lb/hr)
Table 4.g shows the constant “C” for some types of tubing and pipes. The
backpressure depends upon the length (L) of the hose or pipe and the
humidication load (H). The calculated value may vary ±10% or ±0.1 kPa (½
in H2O), whichever is greater.
Inlet Max. load
kg/hr (lb/hr)
Max. length
m (ft)
Constant “C”
kPa/m (in H₂O/ft)
40mm hose1 45 (99) 4 (13.1) 0.74 (0.91)
80mm hose1 320 (704) 4 (13.1) 0.0168 (0.021)
2”Sch 40 pipe 140 (308) 5 (16.4) 0.1530 (0.187)
3”Sch 40 pipe 300 (660) 10 (32.8) 0.0194 (0.024)
3”Cu tubing“K” 270 (594) 10 (32.8) 0.0257 (0.031)
Tab. 4.h
¹Carel-brand steam hose is recommended for use with the ultimateSAM.
For atmospheric humidiers, the total backpressure acting on the device
is the total backpressure from each part of the steam delivery system
(distributor, inlet adapter, and connecting pipe) as well as the static pressure
in the duct or AHU. NOTE: Depending on the location of the distributor, the
static pressure n the duct could be negative.
PTOTAL = PB1 + PB2 + PB3 + PAHU
If the total backpressure exceeds the maximum pressure allowed at the
outlet of the atmospheric humidier, then steps must be taken to reduce
the pressure (e.g., increase the pipe and inlet diameters, or maximize the
height and width of the distributor).