FAQS
Is equipment readily available in Australia?
Yes. Solar Cooling components are common industrial components with distribution agents available in Australia. However, when considering solar cooling you will also need to find skilled engineering expertise to integrate each of the components into a robust, economical and working system.
How much maintenance is required ? Is it complex?
No Solar Cooling maintenance is not complex. Lifetime efficiency will be maintained by cleaning collector glass and reflective surfaces at regular intervals. Absorption chillers require a schedule of maintenance for maintaining solution chemistry (corrosion inhibitors), vacuum and cooling tower infrastructure. However this is true in any HVAC system using Absorption chillers - not only Solar Cooling.
How much roof area is required?
This will depend on many factors including, inter alia, the level of backup chiller capacity. An indicative installation may require around 25% of roof area per unit of airconditioned floor space. Your design engineer can tailor to your specific constraints.
How much Greenhouse gas (GHG) can we save?
GHG savings will depend on the system, location and application. Though savings of around 25% are typical. Parasitic energy for fans, pumps etc should not be ignored. Depending on the system, excessive use of a gas burner, for backup heat, may also result in lower than expected greenhouse gas emission savings.
Why not just use conventional Air-conditioning with renewable power?
It is also possible to operate conventional vapour compression air conditioners using solar (PV) power. However, this method can be expensive and less efficient because there are several stages of energy conversion between sunlight and cool air.
What applications are most attractive for Solar Cooling?
A recent European study identified hospitals
and hotels as particularly attractive targets. Shopping centres and
recreational facilities are also expected to be attractive. |