2.1.3. Candles
Scented candles/tea lights differed from the other products in two ways e after lighting, they are active heat sources, so the test chamber must be able to remove excess heat and moisture. The candle flame will also generate combustion products, which may interfere with on-line and off-line analysis techniques. Generally, candles can be substantial sources of ultrafine and fine particles in the indoor environment (Gehin et al., 2008). Undisturbed burning is a prerequisite to reliable results (Sunderland et al., 2011), especially particle emissions and NOx-generation will be affected by unsteadily burning candles. To protect the candle flame from the air flow and allow undisturbed burning in the test chamber, the candles
were shielded by a stainless-steel mesh cylinder (30 cm
diameter) behind a wind shield in the middle of the test chamber.
2.1.3. CandlesScented candles/tea lights differed from the other products in two ways e after lighting, they are active heat sources, so the test chamber must be able to remove excess heat and moisture. The candle flame will also generate combustion products, which may interfere with on-line and off-line analysis techniques. Generally, candles can be substantial sources of ultrafine and fine particles in the indoor environment (Gehin et al., 2008). Undisturbed burning is a prerequisite to reliable results (Sunderland et al., 2011), especially particle emissions and NOx-generation will be affected by unsteadily burning candles. To protect the candle flame from the air flow and allow undisturbed burning in the test chamber, the candleswere shielded by a stainless-steel mesh cylinder (30 cmdiameter) behind a wind shield in the middle of the test chamber.
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