蒸汽加热水需要多少量如题
蒸汽加热水需要多少量如题
现在需要用蒸汽来加热水,已知蒸汽的参数为0.8mpa,300℃,水量为12t/h,水温为57℃,现在将蒸汽直接通过水混合将水加热到62℃,请问需要多少蒸汽呢?是否是按照等焓来计算呢[ ]
现在需要用蒸汽来加热水,已知蒸汽的参数为0.8mpa,300℃,水量为12t/h,水温为57℃,现在将蒸汽直接通过水混合将水加热到62℃,请问需要多少蒸汽呢?是否是按照等焓来计算呢[ ]
化学人气:346 ℃时间:2019-10-11 20:07:42
优质解答
我是这样计算,不知道对不对,请大家指教.蒸汽的参数为0.8mpa,300℃时,这是过热蒸汽,H = 731.3kcal/kg;加热前水的比焓为57kcal/kg;加热后蒸汽变成水,比焓变为62kcal/kg.设需要的蒸汽量为D,则D×731.3+12000×57=(D+12000)×62,算出D=89.6kg/h 查看原帖>>
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