Monday, January 24, 2011

How Air Conditioning Units Work

By Paul Myers

Commercial air conditioning comes in both centrally driven systems and local systems. Traditionally offices tended to have a central cooling and heating fan unit whereby the temperature controlled air is distributed throughout the building by a system of ceiling or floor ducts. A series of ventilation grills and baffles are balanced to ensue an even air distribution throughout the building.

However, modern technology allows many inverter units to be run off a single compressor and this is an alternative method of providing air conditioning to commercial premises.

The residents of the house will then be able to control temperature and humidity by using a remote control.

Efficiency is further improved by VRF (variable refrigerant flow) techniques. The gases used within air conditioning systems are some of the most harmful to the environment hence the opportunity to reduce the volume of those gases is to be welcomed.

If inverter units are used in commercial buildings, these are often ceiling cassettes which come in a variety of specifications (1, 2 and 4 way cassettes). Perimeter areas and corridor areas often use air conditioning console units. Wall mounted inverter units are common throughout commercial buildings and are now becoming increasingly used in hotels. The attraction of these units is the opportunity for residents to control inverter output temperatures locally and very accurately.

Air conditioning systems have the ability to effectively be 'run in reverse', thereby also acting as a heat pump. This is an extremely efficient use of electricity in providing domestic heating by provision of warm blow air. As a guideline the cost indication would be that a single wall inverter unit and compressor can be supplied and fitted at under 2000 +vat.

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