Ara Institute of Canterbury

Rakaia Building – Central Plant Upgrade – December 2019

In late 2019, Piersons was selected by Ara Institute of Canterbury to carry out the design and upgrade of the central cooling plant in Ara’s main administration building, the Rakaia Building.

The central system that had been servicing the cooling demand in the building for the past 25-years was made up of two Carrier 30GN-080 300kW air-cooled, water chillers. The two existing systems were configured in a duty-standby setup, with a fixed bypass and fixed speed hydronic primary pumps.

Piersons provided Ara with various options for the upgrade. The final selection consisted of 1x Carrier 30RBP-0300, 300kW air-cooled, water chiller. Along with the new chiller having major advances in technology and efficiency over the old redundant units, the addition of dual variable speed hydronic pumps and an adjustable bypass valve added further efficiency to the system. Meaning significant power consumption cost savings for Ara.

The entire project from the design and consultation stage through to the installation and commissioning stages were handled all in-house by Piersons Refrigeration. Due to thorough consultation and planning, an immaculate product was delivered to the client, on time and with no variations to the contract.