The correct definition of an air conditioning system is one which has the ability to control temperature, humidity and air quality within precise limits. However, the term is more commonly used to describe any system that provides the ability to cool a space (the correct term for this is ‘comfort cooling’). Both terms shall be used interchangeably throughout these pages.
In a typical office, air conditioning can account for over 30% of annual electricity consumption. The proportion of energy costs are even higher (as electricity is relatively expensive) along with greater capital and maintenance costs compared to an equivalent naturally ventilated building.
Use of air conditioning in the UK is increasing due to:
- Intensive building use and higher heat gains from more equipment and occupants
- Greater levels of insulation in new buildings
- Comfort demands by building occupants (and the perception that these can only be achieved through air conditioning
- Business and market pressures (the sale or lease of an air conditioned property yields greater profits than of a naturally ventilated building)
- The expectation of a warmer climate.
It is estimated that 40% of commercial floor space will be air conditioned by 2020, compared to just 10% in 1994. There are, however, new technologies and techniques to exploit ‘free cooling’ and other efficient options becoming more readily available so it pays to consider all alternatives before deciding which system to install.
About the technology
Find out what cooling is installed in your building and how it is controlled - the first step to reducing operating costs.
Reduce the need for cooling
Reducing heat input can lower cooling requirements to save money and improve comfort conditions.
Housekeeping
Use appropriate time and temperature settings to enhance the internal environment and save money and energy.
Maintenance
Energy consumption can increase by as much as 60% as a result of poor maintenance.
More efficient equipment
Controls, zoning and people issues
Key links
Links to associated websites and details of key publications.