Examples placement of Cumulus in offices

06

CUMULUS

CUMULUSIntegrated chilled beams

2017-01-26

1

Key figures

Connections: 1x100 mm, 2x100 mmAirflow: 5 - 60 l/sPressurerange: 40 - 100 PaSize: 293 x 200 mm (WxH)Length: 1192 or 1792 mmTotaleffect: up to 1200W

Cumulus is available in MagiCADs database.

Cumulus is a powerful climate beam in a small format with high capacity and a wide operating range, develo-ped to ensure maximum performance. Cumulus crea-tes a good and energy efficient indoor climate through its displacement ventilation principle.

Cumulus is mounted integrated into standard suspen-ded ceilings or other types of ceilings.

Cumulus has a wide range of applications and can be used both in the large rooms and cellular offices.

Function

Cumulus is a ceiling mounted oneway blowing chilled beam with cooling and ventilation, using the wall for supplying air in the occupied zone.

Cumulus is designed to use the Coanda effect, to create a thin vertical airflow along the wall, which allows the fresh air to efficiently reach the occupied zone. By interacting with the thermal driving forces from heat sources, Cumulus cre-ates an energy efficient indoor climate where fresh air is efficiently supplied to the people in the room, while heat-ed and polluted air can rise and leave the room with the exhaust air. This creates the best possible indoor climate, but also requires less resources than a traditional mixing ventilation system.

Stratification of the air temperature in the room gives a higher difference between the supply air and exhaust air temperature, which means that a higher heat effect can be taken away with the same amount of air as for a mixing ven-tilation system. The result is simply a better thermal indoor climate.

Construction

Cumulus is a climate beam with a construction of galva-nized steel sheet and a battery (for cooling or heating) in copper and aluminum.

Cumulus can as a standard be connected with the air from both sides (dy100), where one connection is provided with a cover. At high air volumes should both connections be used, to reduce the noise level.

Cumulus induce the room air through a perforated surface on the bottom of the beam. The devices are preset at the factory for proper flow and pressure.

Wall

Outlet (Supply air+ room air)

Inductionof room air

Adjustments

Cumulus can be delivered preset for specific pressure/air-flow. If necessary, assembled dampers or similar can be used to adjust the flow (of one or more chilled beams). Ad-justments is subsequently made in place by plug or unplug nozzles.

The water circuit is controlled by means of valves and ac-tuators, which are connected to a room control, which can control one or more beams parallel. See separate documen-tation for room control and adjustment of water flow.

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CUMULUS

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Material

Cumulus is classified as green in Byggvarubedömningen and fulfills corrosivity category C2. For full material spec-ifications, download our building product declaration for Cumulus.

Cumulus is as standard powder coated in RAL9003, a high surface finish and good impact and scratch resistance.

max 900

Maintenance/cleaning

Cumulus does not contain any moving parts and are easily cleaned with a damp cloth.

Nozzles and battery are easily accessible after the bottom plate has been removed. Duct system is cleanable via the attracted air connection, which can be used unless both sides are connected. Coil fins are carefully cleaned with vac-uum cleaners fitted with a soft brush attachment.

Dust and dirt from the air can affect the product’s perfor-mance and should be removed if necessary. The interval for cleaning depends on the environment in which the products are mounted and can typically vary from 2-6 years.

Mounting

Cumulus is designed for integrated mounting in suspended ceiling grid systems, but can also be folded into other types of ceilings or mounted freely suspended. See installation in-structions.

Cumulus is mounted with a distance of 0-900 mm from the wall for best performance.

Outlet (Supply air+ room air)

Cumulus-X (extra air)

Cumulus is available with a nozzle configuration for extra high air flow, then we call Cumulus-X. Cumulus-X is availa-ble in two different lengths, 1192 and 1792 mm.

At airflows over 35 l/s, we recommend that Cumulus is con-nected at both ends to reduce the noise level.

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CUMULUS

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The specified sound pressure level in the function chart is including room attenuation 4 dB (A), corresponding to a ex-vivalent absorption area of 10m2 Sabine.

63

63

-10

21

125

125

-7

19

250

250

-7

15

500

500

-5

8

1000

1000

-4

8

2000

2000

-4

9

4000

4000

-5

3

8000 Hz

Hz8000

-5

1

Correctionofsoundpressurelevel(Lp)tothesoundpowerlevel(Lw)ineachoctaveband*

Naturalattenuationinoctavebands*

Sound Pressure Level, Lp dB(A)

Capacity and adjustment charts, Cumulus

Diff

eren

tial p

ress

ure

(Pa)

10 20 30 405

50

100

5010

k=2,2 k=3,5K-factor

30

25

Airflow (l/s)Cumulus 1

200

Cumulus 1800

35

30

Capacity and adjustment charts, Cumulus-X (extra air)

Diff

eren

tial p

ress

ure

(Pa)

10 20 30 405

50

100

50 10010

K-factor k=4,3

Sound Pressure Level, Lp dB(A)

Airflow (l/s)

Over 35 l/s, sound values that you see above, are accounted for double connection.

The figure refers to maximum flows, fully open. Cumulus can be delivered preset to specified pressure and flow.

The figure refers to maximum flows, fully open. Cumulus can be delivered preset to specified pressure and flow.

Cumulus-X 1200*

25

k=6,5

Cumulus-X 1800*

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CUMULUS

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293

60

Ø10060 124 26

47

124

L50

200

Dimensions & connections (duct dimension Ø100, pipe dimension 12 mm)

Cumulus-X 1200

Cumulus 1200

Cumulus-X 1800

Cumulus 1800

Effec

t at ∆

T 10

° (te

mp.

roo

m -

tem

p. w

ater

) + ∆

T 8°

air

[W]

1000

1100

80

90

90

100

800

900

700

600

500

400

3000,0 10,0 20,0 40,030,0 60,050,0 70,0 Airflow [l/s]

Overview Chart total effect of Cumulus and Cumulus-X, 80 Pa

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to both ends to reduce the noise level.

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CUMULUS

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Connections (right, left, double)

Cumulus can be adapted with air connection and pipe connections on the left or right side.

At airflows over 35 l/s, we recommend thatCumulus is con-nected with air at both ends to reduce the noise level.

The picture to the right shows a plan view of an office and how to detect the connections to Cumulus in relation to a room.

Example

LHLVRHRV

RightLeft

Wall (top view)

Control systems

InventiAir are able to deliver complete control systems or individual components.

Valves&connectivitypackage

Control valve• FVR-10 incl compression fittings DN12

Aerators valve (manual) • Aerators valve NC incl push-fit DN12

Stop valve• TA400 incl compression fittings DN12

Connection hose• Oxy L=400 pipe DN12 / push-fit DN12 (diffusion

proof)

R

• Oxy L=400 pipe DN12 / pipe DN12 (diffusion proof)

Actuator• 24V NC - pulse modulating digital on/off control

• 24V 0-10V NC - modulating analogue control

Transformer• Sizes between 20-150 VA 24V, plug or fixed connection

The connections are defined by the direction of the air outlet on Cumu-lus.

Connetiontype

LH-RH

LH-RV

LV-RV

LV-RH

LD-RV

LD-RH

Description

Air right - pipe right

Air right - pipe left

Air left - pipe left

Air left - pipe right

Air double - pipe left

Air double - pipe right

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Circuitboards (see separate documentation)

Circuit boards for quick and easy connection of all the con-trol functions in a control system. Connects the controller with peripheral control components in the control zone and forwards the electrical supply and control signals. Use of a circuit board also helps a lot for future changes to the sub-division and control zones.

Connect MaxiCircuit board for power supply and communication with several types of external sensors such as; presence, CO2, humidity sensor, VAV and boosting damper.

Connect MidiCircuit board with RJ45 cables and external sensors for hu-midity sensor, VAV and boosting damper.

Connect MiniCircuit board with the basic function cooling and heating.

MinMax 2-position damper (see separate documenta-tion)

Patented damper for basic flow/maximum flow that re-quires no silencer. Available with or without engine. By de-fault it comes with 24V engine.

Roomcontroller (see separate documentation)

We have three different control units depending on the pe-ripherals to be regulated and if there are demands for com-munication with superior systems via Modbus or BACnet. Contact InventiAir for help, finding the right equipment for your needs.

Diwa B (room controller)Room controller for sequence control of heating and cool-ing or only heating or cooling without communication with the host system. Integrated function for connecting the condensation sensor.

Diwa C (room controller)Diwa C is a programmable controller with communication via Modbus or BACnet, but which can also be used as a stand-alone control unit. Integrated function for connecting the condensation sensor.

Diwa CD (room controller)Diwa CD is a programmable controller with LCD display. Communication over Modbus or BACnet, but which can also be used as a stand-alone control unit. Ability to pro-gram most of the functions directly in the control unit with-out superior control system. May be beyond the capabilities of the C Diwa also be combined with analog CO2 sensor 0-10V. Integrated function for connecting the condensation sensor.

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CUMULUS

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120 Pa

120 Pa

100 Pa

100 Pa

80 Pa

80 Pa

60 Pa

60 Pa

40 Pa

40 Pa

Power chart, Cumulus 1800 (chart 2)

Power chart, Cumulus 1200 (chart 1)

Effec

t wat

er c

ircu

it (te

mp.

roo

m -

tem

p. w

ater

) [W

/°K]

Nom

inal

pow

er a

t flow

0,0

25 l/

sEff

ect w

ater

cir

cuit

(tem

p. r

oom

- te

mp.

wat

er) [

W/°

K]N

omin

al p

ower

at fl

ow 0

,038

l/s

50

60

70

80

70

90

100

40

60

50

30

40

20

30

0,0

0,0

15,0

15,0

10,0

10,0

5,0

5,0

20,0

20,0

25,0

25,0 30,0 40,035,0

30,0

45,0

Airflow [l/s]

Airflow [l/s]

Power charts

The power chart shows the cooling capacity of the water circuit at a given static nozzle pressure and the desired airflow in Cumulus.The effect on the water circuit is read on the left scale is Watts per Kelvin and shall be multiplied by the number of degrees of temperature difference, which consists of the temperature difference between the average temperature

E

of the water circuit and the calculated room temperature, including the estimated stratification. The effect applies to a nominal water flow of; 0.025 l/s on the water circuit for the length 1200 and 0.038 l/s for the length 1800. For a more precise calculation of cooling capacity, where the flow deviates from the nominal flow (use chart 5 on page 9).

Example: Calculate the nominal cooling power from Cumu-lus-1200 on the water circuit at a airflow of 15 l/s an a available nozzle pressure of 100 Pa. KS =14°/17° and dimensioning temperature of the air in the room + stratification (thermal stratification) is 24°C + 1,5°C =25,5°C. The temperature difference (∆T) is therefor 25,5°-(14°+17°)/2 = 10°K

Select the point on the X-axis of the air flow 15 l/s and follow the line up to the pressure curve of 100Pa, then read power on the Y-axis to 54W/°K x ∆T10=540W. No-minal flow = 540W/(3°∆T x 4200)= 0,043 l/s. Use the flow correction factor in chart 5 on page 9, if the flow deviates from the nominal flow.

To get the total effect including air cooling capacity, use chart 7 on page 10 and then add the effect of the supply air.

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to both ends to reduce the noise level.

120 Pa

120 Pa

100 Pa

100 Pa

80 Pa

80 Pa

60 Pa

60 Pa

40 Pa

40 Pa

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Power chart, Cumulus-X 1200 (extra air) (chart 3)

Power chart, Cumulus-X 1800 (extra air) (chart 4)

Effec

t wat

er c

ircu

it (te

mp.

roo

m -

tem

p. w

ater

) [W

/°K]

Nom

inal

pow

er a

t flow

0,0

25 l/

sEff

ect w

ater

cir

cuit

(tem

p. r

oom

- te

mp.

wat

er) [

W/°

K]N

omin

al p

ower

at fl

ow 0

,038

l/s

60

50

70

80

70

90

110

100

40

60

50

30

40

20

30

0,0

0,0

30,0

30,0

20,0

20,0

10,0

10,0

40,0

40,0

50,0

50,0 60,0 70,0 80,0

Airflow [l/s]

Airflow [l/s]

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to both ends to reduce the noise level.

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to both ends to reduce the noise level.

Cumulus 1200 Cumulus 1800

The pressure drop is calculated for a water temperature of 15°C

Pres

sure

[kPa

]

0,0

15,0

20,0

25,0

30,0

10,0

5,0

Water flow [l/s]0,01 0,03 0,04 0,05 0,06 0,07 0,08 0,09 0,10,02

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CUMULUS

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Pow

er fa

ctor

Water flow qw [l/s]0,6

0,02

0,03

0,04

0,05

0,06

0,07

0,08

0,09

0,10,01

0,7

0,8

0,9

1,0

1,1

1,2

Cumulus 1200 Cumulus 1800

Power factor of turbulence intensity in the cooling coil (single water circuit for cooling)

Example: What is the corrected power of Cumulus 1200 ac-cording to the example on chart 1 on page 7?

Nominal power was 540W and the flow 0.043 l/s. Read the power factor of the chart in the example = 1.04

The flow compensation effect of the water circuit on Cumulus 1200 = 540 x 1,04 = 562 W The new flow is 562W / (3°∆T x 4200) =0,045 l/s

Example: Which pressure does a Cumulus 1200with water temperature KS=14/17 (∆T 3°) at an ef-fect on the water circuit = 562 W? The flow in the climate beam = 562W / (3°∆T x 4200) = 0,045 l/sRead the flow on the x-axis and follow the line of intersection of Cumulus 1200. Read the pressure drop on the y axis = 8 kPa

Flow compensation (chart 5)

Calculation of the flow compensation effect. All reported data on the effect diagram applies for a nominal flow where the power factor = 1.

This flow is 0,025 l/s for Cumulus 1200 and 0,038 l/s for Cumulus 1800, depending on the different dimensions of the constituent tubes in the cooling coil.

F

To calculate a more accurate effect at differing flows, the power factor is calculated and then multiplied by the out-put data in the chart.

Pressure chart Cumulus (chart 6)

Pressure drop in water circuit.

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Cooling power, supply air

Cool

ing

pow

er [W

]

Order (example)

Productname

Cumulus 1200 LV-RV

Cumulus 1800 LD-RH

Cumulus-X 1800 LV-RH

Size

1200

1800

1800

Connctionair

left

double

left

Connectionwater

left

right

right

Color

RAL9003

RAL9003

RAL9003

To select the correct designation for connections, see page 5.

10°

12°

8°

6°

4°

2°

400

500

600

700

300

200

100

00,0 10,0 20,0 50,030,0 40,0 Airflow [l/s]

Example: Which cooling power does the supply air give at an airflow of 15 l/s and a temperature difference between the supply air and the exhaust air at 8°K ?

Read 15 l/s on the x-axis and the intersection of 8° ∆T, read the effect of the y-axis = 140W