Carrier has introduced high-performance heat recovery and free cooling options to its AquaSnap® 30RBP air-cooled scroll chiller range on lower global warming potential (GWP) R-32 refrigerant, providing even greater energy savings and further reducing operating costs for end-users.
Carrier is part of Carrier Global Corporation (NYSE: CARR), the leading global provider of healthy, safe, sustainable, and intelligent building and cold chain solutions. Carrier was the first European manufacturer to introduce a fully optimized scroll chiller range on R-32.
Extended energy savings in AquaSnap
AquaSnap units also have an outstanding seasonal energy performance ratio (SEER) for cooling of up to 6.62, reducing indirect greenhouse gas emissions resulting from energy use. The latest heat recovery and free cooling options extend energy savings, further reducing greenhouse gas emissions over the lifetime of the equipment.
The heat recovery system enables chillers to produce domestic hot water up to 80 deg C, while continuing to provide cooling, useful for applications such as hotels, hospitals, and industrial processes requiring hot water.
Understanding Free cooling
Free cooling harnesses cooling from the environment to augment mechanical cooling via the chiller's compressors
The free cooling option makes use of favorable ambient and load conditions, harnessing free cooling from the environment to augment or replace mechanical cooling via the chiller's compressors, reducing energy consumption and running costs.
Two versions of free cooling are available. Partial free cooling is designed for applications with a variable primary cooling load, such as offices and healthcare, which may also have a constant residual cooling need. Examples include computer suites or scanner facilities.
The total free cooling option is designed for applications with a constant cooling need throughout the year, such as industrial processes and data centers.
Authority comment
"Heat recovery and free cooling can deliver significant energy savings for most applications," said Eric Pollet, Marketing Product Manager, Chillers and Heat Pumps, Carrier HVAC.
"Free-cooling is particularly valuable in higher latitudes, where cooler climates offer the greatest opportunities for harnessing natural ambient conditions rather than relying on mechanical cooling. Under these conditions, it is possible for free cooling to meet most of an application's cooling needs, delivering huge potential savings for the end-user."
The free cooling system in Carrier
Heat recovery and free cooling support Carrier’s 2030 Environmental, Social, and Governance (ESG) Goal
Carrier's hydronic-based free-cooling system automatically activates when the outdoor air temperature drops 1 degree C below the chiller's return water temperature, harnessing the full free cooling opportunity and maximizing energy savings.
For example in Berlin, the hydronic free cooling potential is 50 to 95% of annual chiller run-time, depending on the application. In more northern locations, the potential free cooling opportunity is even greater. If free cooling is not sufficient to meet requirements, a mixed mode – using both free cooling and mechanical cooling – is automatically activated, ensuring the cooling needs of mission critical applications are always met.
Energy-efficient solutions like the AquaSnap® scroll chiller with heat recovery and free cooling support Carrier’s 2030 Environmental, Social, and Governance (ESG) Goal of reducing its customers’ carbon footprint by more than 1 gigaton.
