Warm Homes Technical Report: Real-life Emissions Testing of Pellet Burners in Tokoroa

1 Introduction

2 Methodology

3 Results

4 Discussion

5 Conclusions

Appendix 1: Results of Individual Test Runs

Appendix 2: Estimating the Emissions from Wood-pellet Burners

Appendix 3: Portable Emissions Sampler

3 Results

Results from the study are summarised in Table 1. The emissions rate in g/kg is obtained directly from measurements recorded by the portable emissions sampler. This shows the grams of particulate emissions per kilogram of fuel burned, where the fuel weight is expressed on a dry weight basis. This is the same as used in AS/NZS 4013 for laboratory measurements of particulate emissions.

Table 1: Summary of results for pellet burners

Heater	Manufacturer	Model	Average emissions rate (g/kg)	Pre-1994 heater replaced*
1	Sherwood Industries	EFIII Meridian	1.54	1
2	Sherwood Industries	EFII	11.35	3
3	Sherwood Industries	EFII	1.09	6
4	Sherwood Industries	EFII	1.95	7

* This is the number of the heater from Environment Waikato 2006,² which describes the results of emissions tests on households participating in the Warm Homes Pilot Project before removal of their pre-1994 wood burner.

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