www.heatingandventilating.net
In many buildings, there is an existing need for raised floors, which then limits the available height of the ceiling void, resulting in compromised solutions. By increasing the raised floor height from 150mm to 300mm, an underfloor system can easily be accommodated, meaning that ceiling services can be eliminated, offering a 200mm to 400mm potential increase in headroom in the space.
In older buildings like 24 St James’ Square, underfloor air conditioning technology can offer increased headroom availability of 300mm or more. This increased floor to ceiling height in older buildings often means that they can be revitalised rather than demolished, which is a key element of sustainable construction.
Cost savings
In order to maximise the benefits of underfloor air conditioning, it must be introduced into the overall design philosophy at an early stage. When incorporated into the overall building design, savings can be made to curtain wall costs, all other height-related savings such as lift shafts, columns, stairwells, riser shafts, and vertical services such as mains pipework and electrical risers. The Swedish National Pension Fund has reported overall cost savings of between 5% and 7% in buildings using underfloor air conditioning. Good quality underfloor air conditioning systems are similar in price to conventional good quality fan coil systems, but underfloor systems also reduce the cost of construction and offer tax advantages. An overall saving in construction equates to something in the region of 50% of the AC system.
Air conditioning
www.heatingandventilating.net
March 2021
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