Auckland City Rail Link, New Zealand
Auckland’s first underground railway system will reduce congestion, bring people closer to job and amenities, and unlock new development potential.
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Aurecon provided detailed engineering design services and project managed the installation of a heat recovery system for Energy for Industry (EFI), at the Winstone Pulp International (WPI) Karioi Pulp Mill site.
Energy for Industry implemented the project in a BOOT (build, own, operate, and transfer) contract arrangement with WPI, Karioi. The project involved heat recovery from steam flows generated by wood pulp refiners.
The refiner heat recovery project has enabled the facility to now preheat air for the flash drying of thermo mechanical pulp using waste heat in dirty refiner steams that were historically vented into the atmosphere.
This provides substantial annual savings from reductions in the volumes of LPG (natural gas) and imported biomass burnt to heat air for flash drying.
The project recovers approximately 4.4 MW of thermal energy in a 24-hour period over more than 320 days annually. It also has reduced carbon dioxide (CO2) emissions from the site by an estimated 6,000 tonnes of each year.
Auckland’s first underground railway system will reduce congestion, bring people closer to job and amenities, and unlock new development potential.
Aurecon is part of the Northern Alliance delivering NZ’s Ō2NL expressway, partnering with NZTA Waka Kotahi to improve safety, reliability and efficiency.
Aurecon developed MOAT, a digital tool enabling NZTA to assess carbon and resilience impacts across thousands of projects, supporting faster, data-driven transport decisions.
