0603RHC4-JLGBEN
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Figure 12c :
11.0 HEATING SECTION WITH BY-PASS CHANNEL
11.1 By-pass
requirements
11.1.1 Referring to section 4.1.3, a by-pass duct in
parallel with the heat exchanger enclosure
might be required.
11.1.2 Such by-pass duct might also be required to
reduce the pressure loss over the heating
section, particularly at higher airflows.
11.1.3 When a by-pass duct is applied, a portion of the
total airflow is guided through the by-pass duct
and the remaining airflow is guided through the
heat exchanger enclosure.
11.1.4 The by-pass duct dimensions must be properly
determined in order to ensure that the airflow
through the heat exchanger enclosure always
meets the minimum airflow requirements as
mentioned in table 6.
Table 6
V1 = minimum. airflow required through heat exchanger
enclosure
V2 = minimum airflow required for high heat output H2
pressure losses through a RHC 4000 heating module
0
50
100
150
200
250
300
350
400
450
500
10000
15000
20000
25000
30000
35000
40000
45000
50000
55000
60000
airflow (m³/h)
pressure drop (Pa)
RHC 4150M
RHC 4175M
RHC 4200M
35
30
16
20
18
22
11
12
13
14
15
25
∆
T RHC 4150M
35
30
25
11
12
13
14
15
16
17
18
20
22
∆
T RHC 4175M
35
30
22
25
20
18
16
15
14
13
11
12
∆
T RHC 4200M
V1
V2
(m
³/h
)
(m
³/h
)
4050 06
3900
5950
4060 07
4700
7150
4075 09
5700
8800
4100 12
7500
11700
4110M.13
---
13600
4125M.15
---
15600
4150M.18
---
12300
4175M.21
---
14100
4200M.24
---
16300
Model