Airwell RWC 360 [7/16] T x 3600 q k x

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Water Flow and Water Pressure Drop

with Q : Water flow (l/s)

∆T : Temperature difference (K)

P : Heat exchanger capacity (kW)

P x 860

(∆T x 3600)

K x Q

∆P=

with ∆P : Pressure drop (kPa)

K : Pressure drop coefficient

EVAPORATOR PRESSURE DROPS

RWC MODELS 170 200 240 280 320 360

K 6.0 6.0 2.1 2.1 2.1 2.1

Min. water flow l/s 5.5 6.4 7.2 9.0 9.7 10.7

Nominal water flow l/s 7.7 8.9 10.1 12.6 13.6 14.9

Max. water flow kPa 12.8 14.9 16.8 21.0 22.6 24.9

Min. pressure drop kPa 18 24 11 17 20 24

Nominal pressure drop kPa 36 48 21 33 39 47

Max. pressure drop kPa 99 133 59 93 107 130

CONDENSER PRESSURE DROPS

RWC MODELS 170 200 240 280 320 360

K 11.2 11.2 7.2 7.2 4.5 4.5

Min. water flow l/s 3.5 4.1 4.6 5.7 6.2 6.9

Nominal water flow l/s 4.9 5.7 6.4 8.0 8.7 9.6

Max. water flow kPa 8.2 9.5 10.6 13.4 14.5 16

Min. pressure drop kPa 14 19 15 23 17 21

Nominal pressure drop kPa 27 36 29 46 34 41

Max. pressure drop kPa 75 101 81 129 94 115

Water flow is calculated as follows : Water pressure drop is calculated as follows :