The Combustion Enhancement of Liquefied Petroleum Gas by Ozone Addition
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Abstract
The purpose of this research was to study the effects of ozone addition on combustion mechanism concerning burning temperature and velocity of flame. The combustion system was consisted of a Liquefied Petroleum Gas (LPG) container, an air pump, an ozone generator and a nozzle. The LPG was regulated using a pressure regulator and it was mixed with air and ozone gas before passing through the nozzle designed as a slot burner, having the slot dimension of 3 mm x 25 mm. In the first part, the experiment was intended to compare the combustion efficiency with and without ozone gas in the concentration range of 0–1,000 mg/hr at the equivalence ratio of 6.31. Without the ozone gas, the maximum burning temperature and maximum flame burning velocity were 705.5°C and 0.043 cm/s, respectively. Alternatively, the combustion with ozone concentration of 1,000 mg/hr showed the highest temperature of 885.5°C and the burning velocity of 0.082 cm/s. Two equivalence ratios (Φ), namely 6.31 and 3.31, were performed under specific condition with and without ozone addition up to 1,000 mg/hr in the second part. The reduction of the Φ from 6.31 to 3.31 provided the greatest temperature increase from 705.5 to 790.8°C without ozone addition, respectively, and the highest temperature was nearly the same around 890°C with ozone concentration of 1,000 mg/hr. The burning velocity showed a linear equation with ozone concentration and the reduction of the Φ gave an increase in burning velocity for the ozone concentration range of 0–1,000 mg/hr.
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References
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