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第686章 质量哪里去了?(1 / 2)

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李老师自然不是为了“活跃气氛”:

老胡同志炼焦用的是典型的“北方土法小圆窑”!

先在地上挖一个“直径6米,深0.5米”的的圆形窑底;将窑底烘干夯实之后,就沿土坑边缘垒上一圈厚厚的砖墙......

砖墙厚度至少1米左右,高度也至少1米7有余!

砖墙外面覆有厚厚的保温土层;内部被圈起来的一个“直径4米,高1.7米”的圆形空间,就是用来炼焦的窑室......

窑室中!

焦煤分两层装填!

并且,为了保证煤层的受热均匀,每层煤中间还砌有六条通风火道(被李老师烧炸了三条的那个)......

(从数据上看,作者编的这个圆窑还是很科学的)

......

那么!

问题也就来了:

质量=πr2×高度×密度!

一个“4米直径,1米7高度”的圆窑,即便除掉通风火道所占用的空间,即便焦煤的密度按1吨2/方计算......

至少也可以装填20吨焦煤!

20吨焦煤!

每吨30块钱的运费!

再加上焦煤的出场价格和壮汉们半个月的工钱......

也就是说:

学校投进去800块钱,就只是炼了3吨焦炭,以及不到10吨的,被老胡称作“生煤和半焦”的“高热值燃料”?

呃,还有800多斤烧透的煤渣儿!

......

当然!

李老师算的这么清楚!

也不是想跟老胡同志算什么总账!

之所以计较得如此清楚,一方面是由于李老师的“数字敏感性”作祟,另一方面,却是李老师发现了其中的BUG:

3吨焦炭!

10吨生煤和半焦!

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