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Passive beam
Passive beam

Halton CPA – 用于明装的被动式冷梁

低生命周期成本的明装冷梁。

  • 用于平齐安装或吊顶面下方安装的模块化对流散热器
  • 工作状态安静

概览

  • 用于安装平齐或下方吊顶面的模块化对流散热器
  • 工作状态安静
  • 无运动部件
  • 维护间隔长,生命周期成本低
  • 单台/多台控制
  • 适用于办公室、会议室、零售商店、宾馆和医疗保健场所
  • 可配备水阀
  • 100 mm 和 300 mm 两种高度可满足不同的制冷要求

Dimensions and weight

WD = Location of pipe connection
S     Front end
U     On top

W H w L l (without valves) l (with valves)
315 100 136 1200-5000 L-200 L-300
450 100 204 1200-5000 L-200 L-300
585 100 271 1200-5000 L-200 L-300
315 300 136 1200-5000 L-200 L-300
450 300 204 1200-5000 L-200 L-300
585 300 271 1200-5000 L-200 L-300

A coil with 1 loop has a connection pipe ØD 15 mm and 2 loops has a connection pipe ØD 22 mm.

Fig.1.  Optionality factory-fitted valve

Weights, kg/m (including water)

Width Height
100 mm
Height
300 mm
315 8.5 (8.7) 9.7 (10.0)
450 11 (12.1) 12,4 (13.5)
585 13 (14.4) 14,4 (15.8

Material

Halton CPA has side flanges made from steel The modular perforated screen (holes 10 mm / 50% free area) is produced in pre-painted sheet metal (RAL 9003 and RAL 9010, 20% gloss). The coil is made from Ø15 mm copper pipes bonded to aluminum fins.

 Part  Material  Finishing  Note
 Side flanges  Sheet metal  Painted
 Perforated screen  Sheet metal  Painted
 End cap  Sheet metal  Painted
 Coiling fins  Aluminium
 Cooling pipes  Copper Diameter 15 mm

Accessories

 Accessory Code  Note
 Pipe connection, straight in the end WD=S
 Pipe connection, at the top WD=U
 Factory-fitted control valve CV =  See Order Code

Other options by requesting Halton customer service.

Function

The passive beam operates by natural convection, removing the heat load from the room and replacing it with a cooling airflow. The convective airflow (output) increases or decreases in proportion with the heat load within the occupied zone, securing an optimal thermal comfort. Varying sensible cooling output requirements are met by regulating the flow of chilled water through the beam heat exchanger. This is controlled by a combination of room thermostat and water  valve. Operating at elevated chilled water temperatures (to avoid latent cooling), the opportunities for free-cooling are significant.

Installation

The chilled beam Halton CPA is installed fully exposed below a ceiling or suspended ceiling.
In order to ensure effective convection, the beam should be mounted at a minimum distance from the ceiling equal to 0.25 x the width of the beam, when installed away from wall surfaces, or 0.5 x beam width when installed close to partition walls.

Each chilled beam is fixed to the ceiling with expansion anchors and threaded drop rods (not included in the delivery). Four assembly brackets are fixed one fifth of the unit length (L/5) away from the end of the beam. There will be six assembly brackets with beam length ³ 3500.
The exact positions of the brackets are adjusted according to the rod position.

The chilled beam position can be easily adjusted both horizontally and vertically. Assembly brackets are supplied as standard in the package.
The contractor shall supply threaded rods and expansion anchors.

Distance from the ceiling

D = distance wall; up to 1,0 x W

Adjustment

Commissioning of the chilled beam system is carried out following standard practice:

  • Fill up and flush the main pipelines
  • Fill up and vent the beam circuits
  • Adjust the flow water temperature set point
  • Adjust water flow rates with the balancing valves in all main pipelines to the correct value
  • Adjust water flows in all chilled beams to the correct value

Servicing

The Halton CPA chilled beam requires minimum maintenance. It may be necessary to clean the cooling coils every three to five years, depending on room conditions and air quality. The casing may be cleaned with a damp cloth. The cooling coil can be cleaned using a vacuum cleaner.

Specification

Output/capacity        80 500 W/m
Standard length       1200, +100,…,5000 mm
Width                         315, 450 or 585 mm
Casing height           100 or 300 mm
The heat exchanger is constructed from aluminium fins and copper pipes with a nominal outside diameter of 15 mm.
The maximum chilled water pipe work operating pressure is 1.0 MPa. All joints are fully soldered and factory pressure tested.

Order Code

CPA-H-L-W-NW; CO-WD-CV-VA-ZT

H   =  Height
        100, 300

L   =  Length
1200,+100,…, 5000

W   =  Width
315, 450, 585

NW =  Number of water loops
1, 2

Other Options and Accessories

CO = Colour
SW      Signal white (RAL9003)
W        Pure white (RAL 9010)
X         Special colour (RALxxxx)

WD = Location of pipe connection
S        Front end
U        On top

CV = Control valve
N         No
A1       Adjust. kv value, factory mounted, no actuator
A3       Adjust. kv value, factory mounted, 24-V actuator
A5       Adjust. kv value, factory mounted, 230-V actuator
A7       Constant-flow-mounted, no actuator
A9       Constant-flow-mounted, 24-V actuator
A11     Constant-flow-mounted,  230-V actuator

VA = Visual appearance
   A         Square edge

ZT = Tailored product
N         No
Y         Yes

Code example

CPA-100-1200-315-1, CO=SW, WD=S, CV=N, VA=A, ZT=N

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Halton CPA – Passive chilled beam
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