发布时间 : 星期五 文章锅炉第二章课后计算题答案更新完毕开始阅读adfeb1174431b90d6c85c7ef
解：Vk0?0.0889(Car?0.375Sar)?0.265Har?0.0333Oar?0.0889(59.6?0.375?0.5)?0.265?2?0.0333?0.8?5.818Nm3/kgVy0?VRO2?VN2?VH2O?0.01866(Car?0.375Sar)?0.79Vk0?0.008Nar?0.111Har?0.0124Mar?0.0161Vk0?0.01866?(59.6?0.375?0.5)?0.79?5.818?0.008?0.8?0.111?2?0.124?10?0.161?5.818?6.158Nm3/kg当??1.45时，Vy?Vy0?1.0161(??1)Vk0?6.16?1.0161?(1.45?1)?5.82?8.82Nm3/kg当??1.55时，Vy?Vy0?1.0161(??1)Vk0?6.16?1.0161?(1.55?1)?5.82?9.41Nm3/kg因为VRO2?0.01866(Car?0.375Sar)?1.1156Nm3/kg003VN?0.79V?4.6Nm/kgk2003VH?0.111H?0.0124M?0.0161V?0.44Nm/kgOarark2所以有（1）当??1.45,t?300℃时，000Iy?VRO2(c?)RO2?VN(c?)?V(c?)H2ONH222O?1.1156?559?4.6?392?0.44?463?2631kJ/kg过量空气的焓：?Ik?(??1)Vk0(c?)k?0.45?5.82?403?1055kJ/kg0?Iy?Iy??Ik?2631?1055?3686kJ/kg当??1.45,t?400℃时，000Iy?VRO2(c?)RO2?VN(c?)?V(c?)H2ONH222O?1.1156?772?4.6?527?0.44?626?3561kJ/kg过量空气的焓：?Ik?(??1)Vk0(c?)k?0.45?5.82?542?1419kJ/kg0?Iy?Iy??Ik?3561?1419?4980kJ/kg(2)当??1.55,t?200℃时，000Iy?VRO2(c?)RO2?VN(c?)?V(c?)H2ONH222O?1.1156?357?4.6?260?0.44?304?1728kJ/kg过量空气的焓：?Ik?(??1)Vk0(c?)k?0.55?5.82?266?851kJ/kg0?Iy?Iy??Ik?1728?851?2579kJ/kg当??1.55,t?300℃时，000Iy?VRO2(c?)RO2?VN(c?)?V(c?)H2ONH222O?1.1156?559?4.6?392?0.44?463?2631kJ/kg过量空气焓：?Ik?(??1)Vk0(c?)k?0.55?5.82?403?1290kJ/kg0?Iy?Iy??Ik?2631?1290?3921kJ/kg