题目内容
一个搅拌槽反应器，出口与进口物料的焓流量差值为17110MJ/h，它的反应热(吸热反应)折算为1960MJ/h，搅拌器功率75kW，反应器绝热层的表面积120m2。如果以搅拌器功率的50%转化为热量，反应器绝热后外表面允许的热损失为186W/m2计，反应器需要外界提供的热量(MJ/h)为下列哪个数值
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