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热平衡计算 Heat balance calculation 100%rated power符号Sign备注 Remarks数据Date单位 unit汽轮机进汽量 Steam of turbineinletDt汽轮机厂家提供 Dt=Db/0.99/0.9650t/h锅炉出口新蒸汽量 Steam ofboiler outletDb见热平衡图 Refer toHeat balance drawing52.60943 t/h锅炉出口蒸汽焓值 Steam enthalpy ofboiler outlethb查表得 check book3213 kJ锅炉排污率 Blowdown of boiler rate pw锅炉厂资料 Boiler factory date2%锅炉排污量 Blowdown of boilerDblDbl=pw*Db1.052189 t/h锅炉排污焓值 Blowdown of boilerenthalpyhbl查表得 check book1160 kJ锅炉给水焓值 Boilerfeeding water enthalpyhfw查表得 check book589 kJ锅炉效率 Boiler efficiency b锅炉厂资料 Boiler date80%发电机功率 Generator powerP汽机厂资料 Turbine factory date9017 kW热耗量 Gross heat consumptionQQ=1000*Db*(hb-hfw)+Dbl*(hbl-hfw)/b/4.186841394364 kcal煤的低位发热值见业主资料3391 kcal/kg锅炉耗煤量12207.13 kg/h电站热耗率(计算值)Gross heatconsumption rate(calculation)qq=Q/P4590.702 kcal/Kwh厂用电率 Electric consumption rateof power plantf电气提供数据 Electric speciality date13%电站净热耗率(计算值)Net heatconsumption rate(calculation)qnetqnet=Q/(P*f)5276.669 kcal/Kwh保证系数 guaranteed ratea1.考虑到电站启动、停机时的热量损失。2.当地属于热带地区,排汽温度不能长期稳定在40,真空度不好维持在0.074bar。所以我的保证值,在计算值的基础上乘以了一个保证系数1.0551.055电站热耗率(保证值)Gross heatconsumption rate(guaranteed)qbqb=Q/P*a4843.191 kcal/Kwh电站净热耗率(保证值)Net heatconsumption rate(guaranteed)qnet.bqnet.b=Q/(P*f)*a5566.886 kcal/Kwh汽轮机排汽量Dp见汽轮机厂家图纸37.366 t/h汽轮机排汽焓值hp见汽轮机厂家图纸2382.88 Kj排汽温度tp见汽轮机厂家图纸45.38 循环水进水温度tj见业主要求33 循环水出水温度tc见业主要求(一般比排汽温度低35C,比进水温度高810)43 循环水量QxQx=Dp*(hp/4.1868-tp)/(tc-tj)1957.086 t/h化学补充水量
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