Biddle CA2 Bedienungsanleitung PDF herunterladen (Seite 11)

Explanation technical data

Selection boiler capacity

For the selection of the CH-boiler one can take the heating capacity in speed 6 at an

outlet temperature of 40 °C. If a CH-boiler is available, usually no extra extension is

needed, because more than 90 % of the heat produced by the air curtain benefits

the climate indoors.

Maximum heating capacity

For the maximum heating capacity in the tables on pages 12 - 15 the heating

capacity for each unit has been taken at speed 6 with an output temperature of 50 °C.

Water volume

The water volumes stated in the tables are based on a water temperature of 60/40 °C,

a room temperature of 20 °C and an outlet temperature of 40 °C. With different values

it is necessary to calculate the water volume with the formula below. With the help of

this formula it can also be determined which water volume is required to achieve the

necessary heating capacity at a given water volume or which maximum heating

capacity can be achieved with a certain water volume.

Water pressure loss

If different water temperatures than 60/40 °C are concerned, the water pressure

loss can be roughly calculated with the formula below. To do this the water volume

shouldfirstbecalculated(seeabove).

Sound

The sound data are based on the direct field, in a situation with an open door and a

sound absorbing ceiling. The sound data for different situations can be determined

by adding the adjacent values to the table values. Deviating distances and several

units next to each other can be calculated with the table below. Data of the 1 m unit,

measured on a distance of 3 m, are the basic assumptions. The factors apply to all

types of air curtains.

 =watervolume[l/h]

=heatingcapacity[kW]

(tablevalue)

 =densityofwaterat90ºC

(=0.984)[kg/l]

= specific heat of water

(=4.18)

ΔT

= temperaturedifferencewater[

°C

]

kgºC

•3600[ l/h]

ΔT

Δ p

= waterpressureloss

  (tablevalue)

Δ p

= waterpressureloss

= watervolume

 (tablevalue)

= watervolume,calculated

  usingformula

•

(

)

Closeddoor: +1à2dB(A)

Acoustical“hard”ceiling: +2à3dB(A)

Correctionfactorsforsoundpressure

in dB(A)

Distance

Unit width (cm)

100 150 200 250 300 350

1.0 m +4.8 +6.2 +7.1 +7.6 +8.0 +8.3

2.0 m +1.8 +3.4 +4.5 +5.3 +6.0 +6.4

3.0 m 0 +1.7 +2.9 +3.8 +4.5 +5.0

4.0 m -2.5 -0.8 +0.4 +1.4 +2.1 +2.7

5.0 m -4.4 -2.7 -1.5 -0.5 +0.2 +0.8

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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