摘要：随着燃气灶的广泛使用，市场上出现了种类繁多的家用燃气灶。有些燃气灶虽然有美观大方符合整体厨房观念的优点，但是也有热效率普遍不高，烟气中释放的有害气体含量较高等缺点。因此，研究燃气灶节能还是很必要的。开展节能型家用燃气灶系统的研究和设计工作，对于提高我国居民的能源利用效率、节约家庭支出有重要意义。本文提出一种带回热的新型节能燃气灶,即采用回热循环来提高燃气灶的热效率。利用燃烧后排走的高温烟气加热助燃空气。一方面提高了助燃空气的温度使燃烧效率得到提高；另一方面回收了烟气的热量提高了总的热效率。71996

毕业论文关键词：家用燃气灶；热效率；天然气；优化设计

Research and design of energy saving gas stove

Abstract：Gas stoves are widely used in china。Various types of domestic gas stove have appeared on the market。Some of these have some very good points,such as,eye-pleasing and beautiful design。But the existing fuel gas cookware has own structure reason,for example,the stove body radiates in a big way,the thermal efficiency is low and the fuel gas combustion is not full。These are all puzzling the user。Therefore,the study of gas stoves for energy-saving becomes necessary。Designing on a Domestic type of Energy Saving Gas Stove is important significance for improving the energy efficiency of our residents and saving family expenditure。A new type of energy saving gas stove with heat recovery is proposed,which adopts heat regenerative cycle to improve gas stove’s thermal efficiency。The energy from high temperature of combustion gas used to heat the cool air will do a great favor to the combustion,which enhanced the combustion efficiency by raising the temperature of cool air and the total thermal efficiency by recovering the heat from fume。

Keywords： Domestic gas stove; Thermal efficiency; Natural gas; Optimal design

目录

1绪论 1

1。1 课题的目的和意义 1

1。2 国内外研究现状与水平 1

1。2。1 国内家用燃气灶研究现状 1

1。2。2 国外家用燃气灶研究现状 2

2燃气热力学特征和燃烧特性 2

2。1 燃气的物理化学性质 2

2。2 热力学性质和燃烧特性 4

2。3 本章小结 7

3灶具燃烧状态研究 7

3。1 燃气炉具燃烧方式 7

3。2 灶具燃烧现象 10

3。2。1 不完全燃烧 10

3。2。2 回火 10

3。2。3 脱火 10

3。2。4 黄端焰 11

3。2。5 移火不良 11

3。2。6 燃烧过程的响声 11

4燃烧系统燃烧器设计 12

4。1 燃气灶压力参数设计 12

4。2 燃气灶功率参数设计 13

4。3 燃气灶喷嘴选型及设计 13

4。3。1 燃气灶喷嘴选取 13

4。3。2 喷嘴设计相关参数 14

4。4 引射器参数设计