Office Air Conditioning
Commercial Office Air Conditioning Systems
Installations - Maintenance Contracts - On-site Repairs - Project Management.
Micra Air have vast experience in the design and installation of office air conditioning systems and will provide the most modern, efficient and cost effective solutions. Call us for free confidential advice and estimates based on your actual design requirements.
- DX Split Systems
- VRV - Variable Refrigerant Volume
- Fan Coil Units
- Chilled Beams
- Chilled Ceilings
DX Split Systems
VRV - Variable Refrigerant Volume
- Comprise an outdoor unit (condenser) and an indoor unit linked together with refrigeration piping. The indoor units can be above ceiling, below ceiling, cassette or wall mounted.
- Provide a cost-effective solution.
- They are not suitable for large installations.
Fan Coil Units
- VRV (sometimes referred to as VRF - variable refrigerant flow) are similar to DX-Split Systems. The fundamental difference between the two is that with VRV a number of indoor units can be connected to one outdoor unit.
- There are 3 different types of VRV systems:
- Two pipe cooling only.
- Two pipe cooling and heating.
- Three pipe heat recovery.
- Usually located above ceilings but can be installed at low level around the perimeter of a building to provide heating and cooling.
- 4 pipe fan coils comprise filter, fan, hot water heating coil and chilled water cooling coil.
- 2 pipe fan coil units provide cooling only and do not have a heating coil.
- Fan coil systems would normally be installed with a fresh air supply and extraction system.
These comprise finned tubes through which chilled water is passed. As air passes over the finned coils by either natural convection (passive beams), or forced convection by blowing air through the beams (active beam) it is cooled and distributed into the occupied space.
- They can either be located within a ceiling void or suspended below it, and can also incorporate light fittings.
- Up to 60% of the cooling provided by chilled ceilings is achieved by absorbing heat radiated from people and machinery. With conventional systems this element may be as little as 10%.
- Generally results in less air movement and less draughts.
- Comprise metal ceiling panels on the back of which pipework passing chilled water is attached.
- Generally have to be used in conjunction with another system, usually displacement ventilation, in order to achieve the cooling loads required to condition modern offices.
VAV - Variable Air Volume
- These can be located around the perimeter of a building but can be located above ceilings/ceiling panels.
- Utilising a refrigerant circuit comprising a compressor, coil and reversing valve to take heat from or put heat into a water circuit which is linked to all the versatemps placed around the offices. This water circuit has both boiler and heat rejection plant which either adds heat to the water circuit or rejects heat from it. Heat taken from one part of a building can be used effectively elsewhere (energy efficient).
- These systems work on the principle of varying the volume of primary air rather than its temperature to respond to any load fluctuations.
- Early systems introduced a variable volume of air into the space which in some cases caused problems with unsatisfactory air distribution from supply diffusers or grilles.
- Later systems, whilst still varying the primary air volume, introduce air into the occupied space at near constant volume. This is achieved by either fan assisted VAV (FAVAV) or induction VAV (IVAV).
Go to top
Services to satisfy corporate customers as well as those seeking small low budget office/home installations.
sitemap.xml | sitemap.htm | air conditioning info | website© more-clix.co.uk April 2009
Design of office air conditioning systems requires consideration of building structure, interior design, orientation, office use, running costs and commercial/letting potential.