节能燃气灶真的节能吗?

2025-03-16 13:13:06
推荐回答(2个)
回答(1):

什么是节能灶具
节能灶具,顾名思义,就是具有节能功效的灶具。节能灶具分为小型即家庭型和大型即商用型。特别是商用型用燃料多,热效率低,所以节能的空间极大。通常商用炒灶的节能方法有炉头节能、炉膛节能,小炒灶还有防空烧节能。
节能灶具真的节能吗
节约能源一个通用的标准就是提高能量与能量之间转换的效率。以燃气灶为例,要想节能就要尽可能多的将燃气转化成为热能,并且在火焰燃烧时使热量集中减少挥发。市面上许多产品都宣称自己的热效率达到了百分之六十以上。这个数值在家庭使用燃气灶时根本不可能达到,其宣传的数值是实验室数据,对于家庭使用没有任何意义。使用普通灶具其实有将近一半的燃气被白白浪费掉了。
燃气被浪费的原因主要有两个:
一、燃烧不充分,也称“化学热损失”,未被烧尽的燃气热能被白白浪费了;
二、大气炉是靠火焰通过对流传热给锅底,但火焰与锅底的接触只是一瞬间,大量的热量未被利用就散发至空间,这被称为“物理热损失”。节能灶具就是通过减少以上两种热损失达到节能效果的。

回答(2):

一些人认为,燃气灶的火开得越大,炒菜做饭加热的速度就越快。其实不是这样,火的大小要与锅的大小匹配,如果火大锅小,火烧在锅的四周只会白白浪费燃气热能。炒菜时火焰刚好布满锅底是烹饪的最佳状态。还有,厨房要保持良好的通风,否则,燃烧时没有充足的氧气会特别浪费燃气。另外,炒菜前最好将配料准备好,避免在炒菜时手忙脚乱浪费燃料。

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