Free cooling can eliminate the requirement for mechanical cooling when ambient conditions allow. For some systems mechanical pumping of the refrigerant or fluid is still required to achieve the cooling effect. The design of the R-32 chiller enables natural refrigerant circulation without mechanical pumps, further reducing energy consumption when operating in free cooling mode. Depending on the chiller design 25% or 75% of nominal cooling capacity of the unit is obtainable when operating in free cooling mode. The mildly flammable A2L refrigerant R-32 has a GWP of 675, which is one third of that of R-410A.
Photo: © Shutterstock – Cefic
Source: Manufacturer’s information