Remko PWW Series Bedienungsanleitung PDF herunterladen (Seite 33)

Planning • Calculation • Units

We reserve the right to make changes to dimensions and design in the interest of technical advances.

Symbol Unit Explanation

Q kW Heating capacity of air heater

Q = Q

+ Q

kW Heating requirement for room to be heated

kW Heat requirement to heat fresh air to room temperature

= V

· C

· ∆

Effective heating capacity of air heater with mounted

accessory components

V m

Air volume flow of air heater without mounted

accessory components

Effective air volume flow of air heater with mounted

accessory components

= V · f

/h Fresh air volume flow

= X · B · L

l/h Heating medium volume flow

°C Air inlet temperature at air heater

°C Air outlet temperature at air heater

∆

°C Air inlet/outlet temperature difference at air heater

∆

– t

∆

°C Heating medium inlet/outlet temperature difference at air heater

∆

= t

– t

∆

°C

Effective air inlet/outlet temperature difference at air heater

with mounted accessory components

∆

= ∆

t · f

Speciﬁc heat capacity of air at constant pressure

Dry air density

L m Length of room to be heated

W m Width of room to be heated

H m Height of room to be heated

X 1/h Number of air changes in room to be heated

- Heat output factor

= Q

/ Q

- Air capacity ratio

= V

/ V

- Air heating factor

∆

kPa Heating medium resistance (pressure loss on water-side)

∆

Pa Static pressure difference with mounted accessory components

D - Pressure difference value with mounted accessory components

860 · Q

kWs

———

kg · K

kWs

1 ———

kg · K

1 2 ... 28 29 30 31 32 33 34 35 36

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