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標題: 提升液化天然氣瓦斯爐熱效率之研究
作者: 莊書豪
關鍵字: 液化天然氣;本生式燃燒器;噴射器;一次空氣量;混合管
出版社: 國立中興大學工學院;Airiti Press Inc.
Project: 興大工程學刊, Volume 12, Issue 1, Page(s) 33-50.
The purpose of this research is to study the promotion combustion efficiency of the domestic
gas burner with various gas burner, height of frame, first air, nozzle diameter, and gas pressure. The
production quantity of nature gas is offered with shortage in Taiwan. The phenomenon had not been
shown until 1990 due to the fact that our country import liquefied natura1 gas from abroad.
The natural gas powerhouse, compressed natural gas car, LNG cold energy utilization and LNG
air-conditioning, etc. are therefore needed to develop so that a higher technology level and perversive
environment could be achieved. Relevant definitions for the fundamental theory in combustion and
burner design for domestic natural gas appliances also needs to making. This paper studies the
fundamental aspects of the four main components of the Bunser burner, such as the injector, air
entrainment, mixing tube design, and burner port geometry. The experiment results are shown that the
LPG and NG gas burner can converse to LNG gas burner when the inner ring is 0.7~0.9 mm and the
outer ring is 1.7~1.9 mm. The effect of the height of gas burner frame with combustion efficiency is
very strong. The optimum of the height of gas burner frame are 2.0~3.5 cm and 3.0~4.5 cm for small
and large type pot respectively. The maximum input heat of the domestic gas burner is optimum when
the value is 0.40~0.50m□/hr. The gas pressure should be adapted to 150±50 mmH□O. The angle
between the center line and the horizontal line should be 45~60℃, and the diameter of flame orifice as
2.5~2.8mm, the pitch of the edge of flame orifice as 4~6 mm, and the depth of flame orifice as 8~10
mm those are optimum in this research results of the experiment. The throat diameter of mixing tube
as 15~20mm, the length of inlet as 25~30 mm, the length of divergent as 120~150 mm, and the slope
as 3□~5□ are the optimum adapted for the present gas burner. The present results can be provided a
reference and applied to designing a higher efficiency of natural gas appliance.

ISSN: 1017-4397
Appears in Collections:第12卷 第1期

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