FAN COILS AND CHILLED BEAMS d ifferentiation is noise level.
This is a crucial aspect in terms of occupant comfort, and requires serious consideration. The success or failure of a system may rely on the final noise level attained, but unfortunately, this factor is very often overlooked. The quoted Noise Rating (NR) of a fan coil accounts for the u nit discharge noise only, and this is not the full picture. The final noise level will be affected by a number of elements, such as the height of the ceiling, type of ceiling construction, general r oom acoustics, and how the fan coil is secured and positioned. To develop an accurate idea of noise level, octave band charts need to be used in c onjunction with information regarding the type of ceiling and room acoustics, in order to arrive at the overall NR.
Conversely, chilled beam systems are almost noiseless, regardless of the room in which they are installed – saving valuable time calculating n oise levels.
Flexibility
Despite the growth predictions and the obvious b enefits that chilled beams offer, a misconception exist around them, which Fläkt Woods is c ommitted to dispelling. This misconception
relates to flexibility.
I n modern buildings, particularly offices, the a bility to adapt to change quickly has become a necessity. When a building is restructured, walls, people and furniture often move around, and r oom functions and occupancy levels can change. T herefore, air conditioning and ventilation s ystems must be flexible, and moving and a dapting them should involve only minimum e ffort and short lead times.
Often, being able to easily adapt the room comfort system to new layouts is equally as important as investing in the latest energy saving s olution. Therefore, FCUs have sometimes been f avoured over chilled beams because historically t hey have been considered more flexible. We find that when consultants and specifiers think about a chilled beam they often picture a large, 3m long, rectangular beam that’s largely immovable and inflexible. This of course wouldn’t be
p articularly helpful if walls needed to be moved in order to change the layout of a building floor. H owever, today’s chilled beams are much more flexible than original options. An example is Fläkt Woods’ Wega II chilled beam, an active system for ventilation, cooling and heating developed for the high demands of the modern, dynamic
o ffice. With Wega II it is possible to change an office layout without having to move or install new chilled beams; only simple adjustment and reconfiguration of the FPC vanes and the variable position nozzles is required. Even t he Pi functionality (the Pi function is pressure independent and makes the product suitable for many types of ductwork system) is designed for change; it can be easily moved with the high occupancy rooms by disconnecting, reconnecting and resetting the values.
T he enhanced design includes variable
g eometry nozzles, to offer the widest choice of a irflow settings. Nozzle change can be actuated to automatically adjust ventilation flow rates to occupancy levels, regardless of pressure changes in the ductwork system. Whilst FCUs have e njoyed a long period of industry popularity, t he reality is that chilled beams can achieve a comfortable environment, with much lower energy consumption.
They offer high indoor air quality, without the stresses of installation and maintenance traditionally associated with fan coil units, and n ow, have a level of flexibility which makes adapting to building modifications simple and hassle-free.
Q powerful uiet,
yet
Dunham-Bush fan coil units are built in the UK to no-compromise engineering standards, using only the most modern and reliable components available. Combined with the very latest design and manufacturing technology, they provide the ideal solution to meet precise thermal and noise criteria.
• Quiet, powerful operation • Energy effi cient • Fast simple installation • Easy access for maintenance • Extendable condensate pans • High quality EC fan motor assembly
Dunham-Bush
• Comprehensive range of models to meet most heating and cooling requirements
• Proven acoustic and thermal performance
F AN COIL U N I T To learn more about Dunham-Bush
FA N To learn more heat emitters contact us today
C O I L UNIT S re about Dunham-Bush
E-mail:
info@dunham-bush.co.uk www.dunham-bush.co.uk
WEL COME T O THE COMFOR T Z
37 THE COMFORT ZONE
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120
