TAB Journal Fall 2020 - 4

Figure 1

PROCESS AIR

REGEN AIR

A

B

C

D

E

F

G

CFM

4000

4000

4000

4000

2500

2500

2500

Dry Bulb
°F

83.5

49.3

95.8

54.0

85.0

213

138.5

Wet Bulb
°F

78.5

49.3

57.7

38.7

78.5

97.1

% RH

80.2

99.8

4.3

15.7

70

23.5

seemed to be the steam valve not being able to produce the
heat temperature of 213°F needed to remove the moisture from
the wheel. The wheel may not have needed to be replaced. The

4

sheaves should not have been changed from the original set.
Using the pressure drop across the wheel, in this case, proved
to be the best method of determining the actual airflow for the
regen air path.
When troubleshooting a problem unit, it is necessary to
investigate the entire system and all components to get to the
root of the problem.

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TAB Journal Fall 2020

Table of Contents for the Digital Edition of TAB Journal Fall 2020

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TAB Journal Fall 2020 - Cover4
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