TURBINE CYCLE HEAT RATE CALCULATION

TURBINE CYCLE HEAT RATE CALCULATION: 

TURBINE CYCLE HEAT RATE CALCULATION SHIVAJI CHOUDHURY

TURBINE CYCLE PERFORMANCE CALCULATION: 

TURBINE CYCLE PERFORMANCE CALCULATION 1.Turbine cycle heat rate calculation.(210 MW –KWU Turbine) 2.HP turbine (HP cylinder ) efficiency calculation .(210 MW –KWU Turbine)

WHAT IS HEAT RATE OF TURBINE CYCLE: 

WHAT IS HEAT RATE OF TURBINE CYCLE Heat rate is the heat input required per unit of power generated , for specific fuel being fired and specific site conditions.

1.1.TURBINE CYCLE HEAT RATE CALCULATION: 

1.1.TURBINE CYCLE HEAT RATE CALCULATION Heat rate calculation by enthalpy method. For 210 MW KWU turbine. #ST: From steam table.

1.2.TURBINE CYCLE HEAT RATE CALCULATION(ENTHALPY METHOD): 

1.2.TURBINE CYCLE HEAT RATE CALCULATION(ENTHALPY METHOD) Heat rate calculation by enthalpy method. For 210 MW KWU turbine. CALCULATION IS DONE IN FOUR PARTS MEASUREMENT. ENTHALPY CALCULATION . CALCULATION FOR HOT REHEAT FLOW. TURBINE CYCLE HEAT RATE CALCULATION.

1.3.MEASUREMENT (TURBINE CYCLE HEAT RATE CALCULATION): 

1.3.MEASUREMENT (TURBINE CYCLE HEAT RATE CALCULATION) SN TAG NO DESCRIPTION MEASURED VALUE UNIT 1.1 FMST M S FLOW TO TURBINE 692 T/HR 1.2 MWG MEGA WATT GENERATED 206 MW 1.3 PMST PRESS AT MS TURBINE INLET 132.2 KG/CM2 1.4 TMST TEMP AT MS TURBINE INTET 528 DEG C 1.5 PFW PRESS FW AT ECO IN 154 KG/CM2 1.6 TFW TEMP FW AT ECO IN 238.5 DEG C 1.7 PHRH PRESS HRH 33.7 KG/CM2 1.8 THRH TEMP HRH 360 DEG C 1.9 PCRH PRESS CRH 37.07 KG/CM2

1.4.MEASUREMENT (TURBINE CYCLE HEAT RATE CALCULATION): 

1.4.MEASUREMENT (TURBINE CYCLE HEAT RATE CALCULATION) S.N TAG NO DESCRIPTION MEARURED VALUE UNIT 1.10 TCRH TEMP CRH STM 360 DEG C 1.11 FRHS FLO RH SPRAY (R+H) 8.0 T/HR 1.12 FFW FLO FW ECO IN 625 T/HR 1.13 PEH6 PR EXT STM TO HPH6 37.07 KG/CM2 1.14 TEH6 TEMP EXT STM TO HPH6 360 DEG C 1.15 TDH6 TEMP DRN HPH6 206.5 DEG C 1.16 TFWHO6 TEMP FW HPH6 OUT 239.2 DEG C 1.17 TFWHI6 TEMP FW HPH6 IN 196.2 DEG C 1.18 PBFD PR BFP DIS HDR 171.0 KG/CM2

1.5.ENTHALPY CALCULATION (TURBINE CYCLE HEAT RATE CALCULATION) (FROM STEAM TABLE); UNIT-KCAL/KG: 

1.5.ENTHALPY CALCULATION (TURBINE CYCLE HEAT RATE CALCULATION) ( FROM STEAM TABLE ); UNIT-KCAL/KG S.N TAG NO DESCRIPTION EQUATION RESULTS 2.1 HMST ENTH MS TO TURB F(PMST,TMST) #ST 816.85 2.2 HFW ENTH FW TO ECON INLET F(PFW,TFW) # ST 246.13 2.3 HHRH ENTH HRH STM F(PHRH,THRH)#ST 840.70 2.4 HCRH ENTH CRH STM F(PCRH,TCRH) #ST 752.36 2.5 HEH6 ENTH EXT STM TO HPH6 F(PEH6,TEH6) #ST 752.36 2.6 HDH6 ENTH HPH6 DRN F(PEH6,TDH6)#ST 210.63 2.7 HFWHO6 ENTH FW HPH6 OUT F(PBFD,TFWHO6)#ST 247.12 2.8 HFWHI6 ENTH FW HPH6 IN F(TPBD,TFWHI6)#ST 199.52

1.6.CALCULATION FOR HOT REHEAT FLOW (TURBINE CYCLE HEAT RATE CALCULATION): 

1.6.CALCULATION FOR HOT REHEAT FLOW (TURBINE CYCLE HEAT RATE CALCULATION) S.N TAG NO DESCRIPTION EQUATION RESULT UNIT 3.1 FEH6 FLOW EXT STM TO HPH6 FFW(HFWHO6-HFWHI6) _________________ HEH6-HDH6 54.91 T/HR 3.2 FHRH HRH FLOW FHRH=FMST-FEH6+FRHS 645.09 T/HR

1.7.TURBINE CYCLE HEAT RATE CALCULATION (TURBINE CYCLE HEAT RATE CALCULATION): 

1.7.TURBINE CYCLE HEAT RATE CALCULATION (TURBINE CYCLE HEAT RATE CALCULATION) S .NO TAG NO DESCRIPTION EQUATION RESULTS UNIT 4.1 QT HEAT INPUT TO TURBINE CYCLE = FMST(HMST-HFW)X1000 +FHRH(HHRH-CRH)X1000 451925.49X1000 KCAL/HR 4.2 THR TURBINE HEAT RATE QT ___________ MWGX1000 2193.81 KCAL/KWH

HEAT RATE OF TURBINE CYCLE UNIT-Kcal/KWH: 

HEAT RATE OF TURBINE CYCLE UNIT-Kcal/KWH 210 MW TURBINE(LMZ)- 2063 210 MW TURBINE (KWU)- 210 MW- 1952 168 MW - 2001 500 MW TURBINE (KWU)- 500 MW - 1945 400 MW- 1988 300 MW- 2063.2 250 MW - 2134.3

2.HP TURBINE (HP CYLINDER)EFFICIENCY (ENTHALY DROP METHOD)CALCULATION: 

2.HP TURBINE (HP CYLINDER)EFFICIENCY (ENTHALY DROP METHOD)CALCULATION HP turbine (HP cylinder) Efficiency calculation is done in three parts 1.Measurement 2.Enthalpy calculation 3.HP cylinder efficiency calculation 4.Note

2.1.MEASUREMENT (HP cylinder efficiency): 

2.1.MEASUREMENT (HP cylinder efficiency) S.NO TAG NO DESCRITION MEASUREMENT UNIT 1.1 TMST TEMP MS TURBINE IN 528 DEG C 1.2 PMST PRESS MS TURBINE IN 132.2 KG/CM2 1.3 TCRH TEMP CRH 360 DEG C 1.4 PCRH PRESS CRH 37.07 KG/CM2

2.2.ENTHALPY CALCULATION (HP cylinder efficiency), FROM STEAM TABLE , UNIT-KCAL/KG: 

2.2.ENTHALPY CALCULATION (HP cylinder efficiency), FROM STEAM TABLE , UNIT-KCAL/KG S.NO TAG NO DESCRIPTION EQUATION RESULT 2.1 HMST ENTHALPY OF MS TURBINE IN F(TMST,PMST) #ST 816.85 2.2 HCRHA ENTHALPY OF CRH STEAM (ACTUAL) F(TCRH,PCRH)#ST 752.36 2.3 HCRHT ENTHTHALPY OF CRH STM (THEORITICAL) F(PMST,TMST, PCRH)#ST 730.86

2.3.CALCULATION (HP TURBINE EFFICIENCY): 

2.3.CALCULATION (HP TURBINE EFFICIENCY) S.NO TAG NO DESCRIPTION EQUATION RESULT UNIT 1 EHPT ENTH DROP EFFICIENCY HPT HMST-HCRHA __________ HMST-HCRHT X100 74.9 %

2.4.NOTE (HP TURBINE EFFICIENCY): 

2.4.NOTE (HP TURBINE EFFICIENCY) EHPT- this is the ratio of ACTUAL CHANGE in enthalpy across the HP TURBINE to theoretical change (at constant entropy) expressed as a percentage

STANDARDS: 

STANDARDS ASME PTC 6-Steam turbine performance test code. DIN 1943 –Thermal acceptance tests for steam turbine. BS EN 60953-Rules for steam turbine thermal acceptance test. IEC 953 –Rules for steam turbine’s thermal acceptance test.

THANKING YOU: 

THANKING YOU