热平衡计算 (excel)

热平衡计算Heatbalancecalculation100%ratedpower符号Sign备注Remarks数据Date单位unit汽轮机进汽量SteamofturbineinletDt汽轮机厂家提供Dt=Db/0.99/0.9650t/h锅炉出口新蒸汽量SteamofboileroutletDb见热平衡图RefertoHeatbalancedrawing52.6094276094t/h锅炉出口蒸汽焓值Steamenthalpyofboileroutlethb查得checkbook3213kJ锅炉排污率Blowdownofboilerrateηpw锅炉厂资料Boilerfactorydate2%锅炉排污量BlowdownofboilerDblDbl=ηpw*Db1.0521885522t/h锅炉排污焓值Blowdownofboilerenthalpyhbl查表得checkbook1160kJ锅炉给水焓值Boilerfeedingwaterenthalpyhfw查表得checkbook589kJ锅炉效率Boilerefficiencyηb锅炉厂资料Boilerdate80%发电机功率GeneratorpowerP汽机厂资料Turbinefactorydate9017kW热耗量GrossheatconsumptionQQ=1000*｛Db*(hb-hfw)+Dbl*(hbl-hfw)｝/ηb/4.186841394363.7475034kcal煤的低位发热值见业主资料3391kcal/kg锅炉耗煤量12207.1258470963kg/h电站热耗率(计算值)Grossheatconsumptionrate(calculation)qq=Q/P4590.7024229237kcal/Kw·h厂用电率Electricconsumptionrateofpowerplantf电气提供数据Electricspecialitydate13%电站净热耗率(计算值)Netheatconsumptionrate(calculation)qnetqnet=Q/(P*f)5276.6694516365kcal/Kw·h保证系数guaranteedratea1.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)Grossheatconsumptionrate(guaranteed)qbqb=Q/P*a4843.1910561846kcal/Kw·h电站净热耗率(保证值)Netheatconsumptionrate(guaranteed)qnet.bqnet.b=Q/(P*f)*a5566.8862714765kcal/Kw·h汽轮机排汽量Dp见汽轮机厂家图纸37.366t/h汽轮机排汽焓值hp见汽轮机厂家图纸2382.88Kj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3~5°C,比进水温度高8~10）43℃循环水量QxQx=Dp*(hp/4.1868-tp)/(tc-tj)1957.0857642079t/h化学补充水量