Nelson College for Girls

A New Wood Fuel Boiler to replace the ageing Coal Boilers
Description of facility: 

With two ageing 450kW coal boilers and a local Council focused on improving air quality, the school resolved to introduce wood fired heating to the school as a means to futureproof its heating system for years to come. Following a tender process, Spark Energy was selected to deliver a new heating system anchored by a 540kW KB Pyrot wood chip and pellet boiler.

BEFORE AFTER
Boiler 2x 450kW coal boilers 540kW KB Pyrot + diesel
Efficiency 65% (est.) 92% (TV test report)
Dust emissions n/a <50mg/m3 (test report)
Fuel Coal Wood pellets
Fuel supplier Local coal supplier Local pellet supplier
Fuel feeding Auger extraction Automatic, sweeping arm
Fuel store n/r 14m3
Ignition Automatic Automatic (electric heat gun)
Carbon emitted pa 180 tonnes (est.) nil (net basis)

Facility type: 
Heat
Application: 
School
Technology type: 
Conventional Combustion
Fuel/Feedstock: 
Wood Pellets
Primary Output: 
Heat
Co-generation: 
No
Address: 
400 Trafalgar Street, South Nelson, New Zealand
Region: 
Upper South Island
Geo Location: 
Owner: 
Nelson College for Girls
Equipment supplier: 
Spark Energy