Seeley International HVAC Case Study - Riviera Luxury Yacht Builders

Australia’s premium luxury motor yacht builder, Riviera Australia recently sought a heating and cooling solution for their 9 bay boat building facility in Coomera - Gold Coast, Queensland . Working with local Mechanical Contractor Navaska, the goal was to pre-condition outside air as make-up air, replacing the air extracted by the exhaust systems and ensuring a comfortable indoor environment for their build team, all year round.
Nine Aira AL Series Evaporative coolers, paired with Aira High capacity gas heaters were installed. The result?
- Significantly lower energy consumption compared to equivalent rooftop package units
- Summer supply temperature of 25 degrees
- Year round comfortable conditions for workers
- 100% fresh outside air to replace the extracted exhaust air, with a total airflow of 117,000L/s and cooling capacity of 808kW
Read the full case study here: www.seeleyinternational.com/h...

[@idjles]

QLD hit 9800 MW consumption in late December due to air-conditioning, only 300MW short of it's all time peak. It only has about 16% renewables.
You didn't show solar on the roof, so this solution is contributing to the burden on the grid.
How does your solution which consumes about 80% fossil-based electricity from the grid and fresh water compare to a solar+refrigerative solution which would consume nothing, since you only need air-conditioning when it's not hot?
QLD would be optimal for solar-driven airconditioning.
Evaporative promotes fresh air as an advantage, but wouldn't solar+refrigerative + heatpump provide cold, dry and fresh air without consuming any water?
Doesn't a heatpump remove your "fresh air" advantage since it consumes no water. My house has a heat pump just to provide constant fresh air in my house.
Aren't heat pumps good enough today that solar + heat-pump is the optimal solution even without refrigeration?

[@seeleyinternational]

Hi and thank you for your comment. There are many factors that need to be taken into consideration when commissioning a commercial air conditioning system. Whilst there are situations in which your solution would work, this cannot be a one size fits all approach. In this case study, the combination of evaporative cooling and gas heating was cost effective and delivered significantly lower energy consumption in comparison to other equivalent rooftop package units. We explain why a reverse cycle system was not the ideal solution for this scenario in the full case study, you can find the link in the video description. Commercial HVAC solutions are engineered specifically for that site; and we pride ourselves on having a full range of HVAC solutions to meet our clients needs and wants. For your interest, all of our case studies can be found here: www.seeleyinternational.com/commercial/hvac-case-studies/.