论文部分内容阅读
一个失灵的输水阀一年会浪费掉多少吨煤的热量?一个1m长、直径20cm的管道如果没有保温一年的散热损失将会有多大?一个3mm、0.6MPa的压缩空气泄漏小孔一年将损失掉多少电力?
How many tonnes of coal a heat is lost in a single year? A 1m long, 20cm diameter pipe will lose heat a year if there is no heat loss? A 3mm, 0.6MPa compressed air leaks in a small hole How much power will be lost in the year?