Technical Guides

The following are quick links to Case Studies, Information Sheets and Technical Guides relating to wood energy that are stored in our resource library.

Case Studies

  • 200kW Froling boiler - Makarewa Primary School:  A victory for forward-thinking, the environmental aspect of this project, while not the major driver, was a significant part of the discussion and the school's eventual decision to choose this boiler.

Information sheets

  • IS09 - Co-firing coal with wood:  Co-firing refers to the combustion of biomass (process residues, forestry residues, purpose grown crops, other organic wastes) with coal. It therefore involves the use of two quite dissimilar fuels and may be considered essentially as a fuel management process to ensure the best blend is identified for each particular case.
  • IS12 - Woody biomass fuel drying: This information sheet examines the issues surrounding the pre-drying of woody biomass for combustion by both natural and forced means.
  • IS39 - Wood energy information resources:  The Bioenergy Association has a range of methods for providing information to the public and to its members. This sheet provides some of the ways in which you can obtain this information.
  • IS40 - Wood energy in New Zealand:  The New Zealand market for heat from the combustion of wood started when Maori first arrived and has continued ever since. Throughout that period it has changed its form but not its role heating air, water or solid objects.  Today 40% of New Zealand’s energy is in the form of heat.

Technical Guides

  • TG01 - Solid Biofuel Classification Guidelines:  These guidelines for classification of solid biofuels were prepared to provide a common terminology and methodology for classifying, specifying and declaring the quality and properties of traded solid biofuel in New Zealand. In most cases it is expected that the traded fuel will be a wood fuel.
  • TG02 - Conversion of solid fuel boilers from coal to wood pellet firing:  This Guide is intended to provide guidance on the conversion of existing coal fired boilers to wood pellet operation. The number of boilers running on wood pellets in New Zealand (particularly in schools) continues to rise, as does the number of organisations offering installation and conversion services. Although this Guide has been formulated on the basis of experience with wood pellet firing, it can with care, be used in relation to firing dry wood chip.
  • TG03 - Guidance for the safe operation of small scale wood fuelled heat plant: This Guide is intended to cover most issues and establish tried and tested operational and maintenance regimes but if in doubt, operators should contact the organisation whic undertook the installation or conversion. This Guide is not a replacement for a manual but rather should be used alongside manuals and the vendors’ instructions and knowledge.
  • TG04 - Tender guidelines for the specification, supply and installation of wood energy plant: This Guide sets out the key elements that must be taken into account prior to the specification, selection and installation of a new wood fuel boiler and associated site works. It has been written such that both engineers likely to tender for wood fuel boiler installations or conversions (referred to as ‘the consultant’), and those likely to be seeking such services (referred to as ‘the client’), (typically non-experts such as school staff or school/hospital boards) can understand what is required.
  • TG05 - Standard methods for verifying the quality of solid biofuels: This Guide provides the recommended standard methods for determining the quality of solid biofuels for the New Zealand market. The methods presented are based on version 1 of the Bioenergy Association Wood Fuel Classification Guidelines and subsequently reviewed and confirmed by CRL Energy (2010).