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Australia’s love affair with the cooling comfort of air conditioning reached a milestone this year with over 50 percent of all Australian homes and 80 percent of commercial buildings now using some type of air conditioning.
It has become a pre-requisite for all commercial, industrial and larger residential buildings. Not just because of its ability to keep occupants comfortable in summer and winter, but also because it has been estimated to save hundreds of millions of dollars in productivity losses every year.
However, it is only in recent times that manufacturers have introduced standout innovation and design to meet the challenges of today’s building designs, need for economy in operation and respect for the environment.
Now, manufacturers are able to offers a wide choice of models to suit any application.This means architects and building designers can choose extremely discreet ducted air conditioners, some with concealed ceiling mounted and floor standing units. Fujitsu ’s ultra-slim units, for example have been designed to fit neatly within the ceiling void or at floor level behind panelling Conditioned air is distributed throughout the room via near invisible diffuser grills. This approach offers practical solutions for interior décor, incorporates space saving engineering, and delivers all the advantages of modern split systems.
Models from the major manufacturers also offer exceptional control and operational features – such as seven day timers, which allows the user to pre-program different time programs, temperature levels, airflow direction and fan speeds for each day of the week. Automatic air flow adjustment is also now common, using microprocessor technology to adjust the air temperature in line with changing room temperatures, thereby guaranteeing constant comfort, as well as economy of operation.
Environmentally friendly refrigerants are now the norm, and it is an established fact that air conditioning is one of the most efficient form of heating there is.
For commercial and large residential applications, the real breakthrough technology is the Variable Refrigerant Flow (VRF) system, which offers varied temperatures in one building – even simultaneous heating and cooling if necessary. This is invaluable in buildings with IT rooms, and other rooms which need to be cooled, while the rest of the building may require heating.
Produced by most of the major manufacturers, among the latest VRF systems to be introduced is Fujitsu’s Airstage which uses three constant speed compressors plus technology to reduce noise, increase efficiency and therefore economy. Airstage’s flexible piping enables up to 16 indoor units to be connected to one outdoor unit. Other features are reduced time to reach the set temperature after start-up by boosting power to 120 percent that of conventional systems and high precision temperature adjustment - an electronic expansion valve continously controls the optimum refrigerant circulation amount for high precision temperature adjustment.
Source: Building Products News.
4-Sep-2002
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