The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform

Sławomir Dykas - One of the best experts on this subject based on the ideXlab platform.

  • Diverse configurations of the Boiler Feed Pump drive for the ultra-supercritical 900-MW steam plant
    International Journal of Energy and Environmental Engineering, 2012
    Co-Authors: Katarzyna Stępczyńska, Henryk Łukowicz, Sławomir Dykas
    Abstract:

    Coal-based electric power generation remains the basic source of obtaining energy. With increasing pressure to reduce CO_2 emissions, improving power unit efficiency has become an issue of utmost significance. Surely, one of the possibilities to improve the efficiency of new power units is raising the steam parameters. With improved power plant efficiency, there is a lower demand for power of almost all auxiliary equipment except the Boiler Feed Pump. The reason for this is that the power needed to drive the Feed Pump is an almost linear function of the steam pressure. This means that, even though the steam mass flow (and, consequently, the Feed water mass flow) is reduced and the efficiency of Feed Pumps is improved, their power increases. For this reason, it is very important to find the optimum drive of the Boiler Feed Pump. The main aim of the conducted analysis was to compare various drive options of the Boiler Feed Pump for a conceptual ultra-supercritical 900-MW steam power unit. The following drive configurations of the Boiler Feed Pump were presented and compared: · A frequency-controlled electric motor · A condensing turbine fed with steam extraction from the immediate-pressure turbine · An extraction-backpressure turbine fed with steam from a cold reheat steam line with bleeds shifted from the low-pressure turbine · A backpressure turbine fed with steam from a hot reheat steam line operating in parallel with the intermediate-pressure turbine · An extraction-backpressure turbine fed with steam from a cold reheat steam line with bleeds shifted from the intermediate-pressure turbine (the master cycle idea). The analysis of the operation of the 900-MW unit with various configurations of the Feed Pump drive was carried out for three load levels: for the nominal mass flow of live steam and for the partial mass flow of 75% and 50%.

  • Diverse configurations of the Boiler Feed Pump drive for the ultra-supercritical 900-MW steam plant
    international journal of energy and environmental engineering, 2012
    Co-Authors: Katarzyna Stępczyńska, Henryk Łukowicz, Sławomir Dykas
    Abstract:

    Coal-based electric power generation remains the basic source of obtaining energy. With increasing pressure to reduce CO2 emissions, improving power unit efficiency has become an issue of utmost significance. Surely, one of the possibilities to improve the efficiency of new power units is raising the steam parameters. With improved power plant efficiency, there is a lower demand for power of almost all auxiliary equipment except the Boiler Feed Pump. The reason for this is that the power needed to drive the Feed Pump is an almost linear function of the steam pressure. This means that, even though the steam mass flow (and, consequently, the Feed water mass flow) is reduced and the efficiency of Feed Pumps is improved, their power increases. For this reason, it is very important to find the optimum drive of the Boiler Feed Pump. The main aim of the conducted analysis was to compare various drive options of the Boiler Feed Pump for a conceptual ultra-supercritical 900-MW steam power unit. The following drive configurations of the Boiler Feed Pump were presented and compared:

Katarzyna Stępczyńska - One of the best experts on this subject based on the ideXlab platform.

  • Diverse configurations of the Boiler Feed Pump drive for the ultra-supercritical 900-MW steam plant
    International Journal of Energy and Environmental Engineering, 2012
    Co-Authors: Katarzyna Stępczyńska, Henryk Łukowicz, Sławomir Dykas
    Abstract:

    Coal-based electric power generation remains the basic source of obtaining energy. With increasing pressure to reduce CO_2 emissions, improving power unit efficiency has become an issue of utmost significance. Surely, one of the possibilities to improve the efficiency of new power units is raising the steam parameters. With improved power plant efficiency, there is a lower demand for power of almost all auxiliary equipment except the Boiler Feed Pump. The reason for this is that the power needed to drive the Feed Pump is an almost linear function of the steam pressure. This means that, even though the steam mass flow (and, consequently, the Feed water mass flow) is reduced and the efficiency of Feed Pumps is improved, their power increases. For this reason, it is very important to find the optimum drive of the Boiler Feed Pump. The main aim of the conducted analysis was to compare various drive options of the Boiler Feed Pump for a conceptual ultra-supercritical 900-MW steam power unit. The following drive configurations of the Boiler Feed Pump were presented and compared: · A frequency-controlled electric motor · A condensing turbine fed with steam extraction from the immediate-pressure turbine · An extraction-backpressure turbine fed with steam from a cold reheat steam line with bleeds shifted from the low-pressure turbine · A backpressure turbine fed with steam from a hot reheat steam line operating in parallel with the intermediate-pressure turbine · An extraction-backpressure turbine fed with steam from a cold reheat steam line with bleeds shifted from the intermediate-pressure turbine (the master cycle idea). The analysis of the operation of the 900-MW unit with various configurations of the Feed Pump drive was carried out for three load levels: for the nominal mass flow of live steam and for the partial mass flow of 75% and 50%.

Henryk Łukowicz - One of the best experts on this subject based on the ideXlab platform.

  • Diverse configurations of the Boiler Feed Pump drive for the ultra-supercritical 900-MW steam plant
    International Journal of Energy and Environmental Engineering, 2012
    Co-Authors: Katarzyna Stępczyńska, Henryk Łukowicz, Sławomir Dykas
    Abstract:

    Coal-based electric power generation remains the basic source of obtaining energy. With increasing pressure to reduce CO_2 emissions, improving power unit efficiency has become an issue of utmost significance. Surely, one of the possibilities to improve the efficiency of new power units is raising the steam parameters. With improved power plant efficiency, there is a lower demand for power of almost all auxiliary equipment except the Boiler Feed Pump. The reason for this is that the power needed to drive the Feed Pump is an almost linear function of the steam pressure. This means that, even though the steam mass flow (and, consequently, the Feed water mass flow) is reduced and the efficiency of Feed Pumps is improved, their power increases. For this reason, it is very important to find the optimum drive of the Boiler Feed Pump. The main aim of the conducted analysis was to compare various drive options of the Boiler Feed Pump for a conceptual ultra-supercritical 900-MW steam power unit. The following drive configurations of the Boiler Feed Pump were presented and compared: · A frequency-controlled electric motor · A condensing turbine fed with steam extraction from the immediate-pressure turbine · An extraction-backpressure turbine fed with steam from a cold reheat steam line with bleeds shifted from the low-pressure turbine · A backpressure turbine fed with steam from a hot reheat steam line operating in parallel with the intermediate-pressure turbine · An extraction-backpressure turbine fed with steam from a cold reheat steam line with bleeds shifted from the intermediate-pressure turbine (the master cycle idea). The analysis of the operation of the 900-MW unit with various configurations of the Feed Pump drive was carried out for three load levels: for the nominal mass flow of live steam and for the partial mass flow of 75% and 50%.

  • Diverse configurations of the Boiler Feed Pump drive for the ultra-supercritical 900-MW steam plant
    international journal of energy and environmental engineering, 2012
    Co-Authors: Katarzyna Stępczyńska, Henryk Łukowicz, Sławomir Dykas
    Abstract:

    Coal-based electric power generation remains the basic source of obtaining energy. With increasing pressure to reduce CO2 emissions, improving power unit efficiency has become an issue of utmost significance. Surely, one of the possibilities to improve the efficiency of new power units is raising the steam parameters. With improved power plant efficiency, there is a lower demand for power of almost all auxiliary equipment except the Boiler Feed Pump. The reason for this is that the power needed to drive the Feed Pump is an almost linear function of the steam pressure. This means that, even though the steam mass flow (and, consequently, the Feed water mass flow) is reduced and the efficiency of Feed Pumps is improved, their power increases. For this reason, it is very important to find the optimum drive of the Boiler Feed Pump. The main aim of the conducted analysis was to compare various drive options of the Boiler Feed Pump for a conceptual ultra-supercritical 900-MW steam power unit. The following drive configurations of the Boiler Feed Pump were presented and compared:

Li Yon - One of the best experts on this subject based on the ideXlab platform.

  • on line performance monitoring method for turbine driven Boiler Feed Pump set
    Thermal Power Generation, 2015
    Co-Authors: Li Yon
    Abstract:

    The open thermodynamic systems of the whole steam turbine and the low pressure(LP)cylinderLP regenerative heater were established.By building up the simultaneous equations of these two systems,the common cold end loss of the condenser was reduced and the energy that the enthalpy rise of Feedwater Pump brought to the Feedwater was calculated.Thus,the shaft power of the Feedwater Pump and the actual inner power of the auxiliary turbine can be obtained.So the Pump efficiency and the relative internal efficiency of the small turbine can be online monitored.Application of this method on a 660 MW unit shows that,this method had the capability of real time collecting data and monitoring performance changes of the turbine driven Feed Pump set.

  • On-line Efficiency Monitoring Method and its Application of Turbine Driven Boiler Feed Pump Set
    Turbine Technology, 2013
    Co-Authors: Li Yon
    Abstract:

    As an important auxiliary equipment of steam turbine,the operating economy of the turbine driven Boiler Feed Pump set has attracted widespread attention from the operation department. An on-line efficiency monitoring and calculation method of turbine driven Boiler Feed Pump set is put forward in this paper by verifying the Feed water flow with the deaerator entrance condensate flow as the criterion considering that the measurement error of Feed water flow is large enough which can not be neglected. Appropriate correction of the auxiliary flow( leakage of the hydraulic bypass system of HP heaters,leakage of sealing water from Feed-water Pump,equivalent flow of deaerator water level changes) were also proceeded to improve the calculation accuracy. The new calculation method has been applied in one 660MW steam turbine unit,the results shows that the said method has the capability of real time acquiring and processing data with higher accuracy which can be used to analyse and forecast changes of the turbine driven Boiler Feed Pump set.

Muhammad Mujaddid Ighna Wathon - One of the best experts on this subject based on the ideXlab platform.

  • Analisis Unjuk Kerja Boiler Feed Pump Turbine Untuk Kapasitas Ketel Uap 2000 Ton/Jam Di PLTU Cirebon Jawa Barat
    2016
    Co-Authors: Sukamta Sukamta, Sudarja Sudarja, Muhammad Mujaddid Ighna Wathon
    Abstract:

    Boiler Feed Pump turbine (BFPT) has an important role in the circulating of demin water from deaerator to the separator of  steam power plant operations (PLTU) in Cirebon. Flow rate, temperature and  pressure were important parameters in Boiler Feed Pump process. Based on the BFPT function, it was necessary to do the analysis interpretation of the performance BFPT. Data needed for evaluation include pressure and temperature on the suction, pressure and temperature on the discharge, and flow capacity. In this study, the data were taken starting in January to December 2014. Data processing was performed using a centrifugal Pump calculations, presented in tables and graphs using MS Excel. Analysis of data using qualitative interpretation of quantitative data. BFPT efficiency during operations in 2014 decreased in February - March amounted to 17.91% (BFPT A) and 18.04% (BFPT B). BFPT A highest efficiency obtained in January amounted to 73.76%, the lowest in March amounted to 55.45%. The highest efficiency BFPT B in February amounted to 72.94%, the lowest in March amounted to 54.9%. Change of Performance BFPT occur due to changes load generator power plant that led to the pressure change  and flow capacity. Other factors that degrade the performance because BFPT was operated continuously for 24 hours and the age of  BFPT sufficient old  cause decrease in Pump performance.

  • analisis unjuk kerja Boiler Feed Pump turbine untuk kapasitas ketel uap 2000 ton jam di pltu cirebon jawa barat
    Semesta Teknika, 2016
    Co-Authors: Sukamta Sukamta, Sudarja Sudarja, Muhammad Mujaddid Ighna Wathon
    Abstract:

    Boiler Feed Pump turbine (BFPT) has an important role in the circulating of demin water from deaerator to the separator of  steam power plant operations (PLTU) in Cirebon. Flow rate, temperature and  pressure were important parameters in Boiler Feed Pump process. Based on the BFPT function, it was necessary to do the analysis interpretation of the performance BFPT. Data needed for evaluation include pressure and temperature on the suction, pressure and temperature on the discharge, and flow capacity. In this study, the data were taken starting in January to December 2014. Data processing was performed using a centrifugal Pump calculations, presented in tables and graphs using MS Excel. Analysis of data using qualitative interpretation of quantitative data. BFPT efficiency during operations in 2014 decreased in February - March amounted to 17.91% (BFPT A) and 18.04% (BFPT B). BFPT A highest efficiency obtained in January amounted to 73.76%, the lowest in March amounted to 55.45%. The highest efficiency BFPT B in February amounted to 72.94%, the lowest in March amounted to 54.9%. Change of Performance BFPT occur due to changes load generator power plant that led to the pressure change  and flow capacity. Other factors that degrade the performance because BFPT was operated continuously for 24 hours and the age of  BFPT sufficient old  cause decrease in Pump performance.