scholarly journals Cooperation of the Organic Rankine system with a cogeneration steam power plant - case study

2018 ◽  
Vol 45 ◽  
pp. 00011
Author(s):  
Anna Bryszewska-Mazurek ◽  
Wojciech Mazurek
Keyword(s):  
Power Plant ◽  
District Heating ◽  
Summer Season ◽  
Hot Water ◽  
Steam Flow ◽  
Steam Power ◽  
Steam Power Plant ◽  
Payback Time ◽  
Selection Of

The cooperation of the ORC system with a cogeneration steam power plant has been considered. A district heating network is supplied from a bleeder turbine. An ORC system can utilize redundant heat, especially during the summer season, when only domestic hot water needs are served. The aim of the study was a selection of an extraction steam flow to produce the maximum electric power in an ORC system and also to cover the changing heating demand in the district heating network under consideration. Various values of extraction steam flows obtained from the bleeder turbine were considered. For a given extraction steam flow, the optimum ORC size has been adjusted. The average annual efficiency of the ORC was estimated at 0,12 (for the cyclic temperatures 120/35°C). The shortest simple payback time has been estimated at 4 years, assuming that heat from the bleeder turbine meats the heating demand throughout the year and thus the ORC system also operates throughout the year.

Electricity and Hydrogen Co-Production From Coal and Biomass

2009 ◽  
Author(s):  
Leandro Galanti ◽  
Alessandro Franzoni ◽  
Alberto Traverso ◽  
Aristide F. Massardo
Keyword(s):  
Power Plant ◽  
Hydrogen Production ◽  
South African ◽  
Pem Fuel Cells ◽  
Hot Water ◽  
Auxiliary Equipment ◽  
Membrane Unit ◽  
Steam Power ◽  
Steam Power Plant ◽  
Pressure Swing

This paper presents and discusses the results of a complete thermoeconomic analysis of an integrated power plant for co-production of electricity and hydrogen via pyrolysis and gasification processes, applied to an existing large steam power plant (ENEL Brindisi power plant-660 MWe). The two considered technologies produce syngas with different characteristics in terms of temperature, pressure and composition, and this has a significant effect on the layouts of the complete systems proposed in the paper. Moreover, the proximity of a hydrogen production and purification plants to an existing steam power plant favour the inter-exchange of energy streams, mainly in the form of hot water and steam, which reduces the costs of auxiliary equipment. Various coals (Ashland, South African and Sardinian Sulcis coal) and mixtures of South African coal and biomass (Poplar) are considered in this study, in order to explore the real potential of mixed fuels in terms of impact on plant economics and reducing CO2 emissions. Furthermore, the high quality of the hydrogen, produced through a Pressure Swing Adsorption unit or a dense Membrane unit, allows it to be used for distributed generation (e.g. by microturbine, Stirling engine, etc.) as well as public transport (using PEM fuel cells). The results were obtained using WTEMP thermoeconomic software [9], developed by the TPG (Thermochemical Power Group) of the University of Genoa, and this project has been carried out within the framework of the FISR National project “Integrated systems for hydrogen production and utilization in distributed power generation” [10]. The complete systems proposed here can represent an attractive approach to flexible hydrogen-electricity co-production.

Evaluation of synchronous execution of full repowering and solar assisting in a 200 MW steam power plant, a case study

2017 ◽  
Vol 112 ◽  
pp. 111-123 ◽  
Author(s):  
Gholamreza Ahmadi ◽  
Davood Toghraie ◽  
Ahmadreza Azimian ◽  
Omid Ali Akbari
Keyword(s):  
Power Plant ◽  
Steam Power ◽  
Steam Power Plant

Energy, exergy and exergoeconomic analysis of a steam power plant: A case study

2009 ◽  
Vol 33 (5) ◽  
pp. 499-512 ◽  
Author(s):  
Mohammad Ameri ◽  
Pouria Ahmadi ◽  
Armita Hamidi
Keyword(s):  
Power Plant ◽  
Steam Power ◽  
Steam Power Plant ◽  
Exergoeconomic Analysis

Exergy analysis of a steam power plant: a case study in Iran

2007 ◽  
Vol 4 (1) ◽  
pp. 54 ◽  
Author(s):  
Mofid Gorji Bandpy ◽  
Vahid Ebrahimian
Keyword(s):  
Power Plant ◽  
Exergy Analysis ◽  
Steam Power ◽  
Steam Power Plant

Conversion of steam power plant into cogeneration unit - case study

Energy ◽  
2021 ◽  
pp. 120872
Author(s):  
Marcin Panowski ◽  
Robert Zarzycki ◽  
Rafał Kobyłecki
Keyword(s):  
Power Plant ◽  
Steam Power ◽  
Steam Power Plant

Integration of Steam Power Plant With Site Utility System Using a New Cogeneration Targeting Method

2012 ◽  
Author(s):  
Mohammad Hasan KhoshgoftarManesh ◽  
Sajad Khamis Abadi ◽  
Hooman Ghalami ◽  
Majid Amidpour
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Power Production ◽  
Steam Power ◽  
Steam Power Plant ◽  
Optimal Integration ◽  
Utility Systems ◽  
Utility System ◽  
Composite Curve

The purpose of a steam power plant usually is power production; however, it can work as a dual-purpose plant with the production of steam and power simultaneously. The aim of this paper was to find the optimum integration of steam power plant as a source and a site utility system as a sink of steam and power. Estimation of cogeneration potential prior to the design of the central utility system for site utility systems is vital to set targets on the site fuel demand as well as heat and power production. In this regard, a new cogeneration targeting model was developed for the integration of steam power plant and site utility of the process plant. The new procedure for finding the optimal integration was proposed based on new cogeneration targeting. In addition, a modified Site Utility Grand Composite Curve (SUGCC) diagram was proposed and compared with the original SUGCC A steam power plant and a process site utility was considered as a case study. The applicability of the developed procedure was tested with other existing design methods, STAR® and Thermoflex software through a case study. The proposed method was shown to give comparable results and the targeting method was used for obtaining optimal integration of steam levels. Identifying optimal conditions of steam levels for integration is very important in the design of utility systems since the selection of steam levels in steam power plants and site utility for integration heavily influence the potential for cogeneration and energy recovery for the site. In this work, the integration of steam levels of steam power plant and site utility system were carried out in a case study, in which the usefulness of the this method was clearly demonstrated for reducing the overall energy consumption for the site.

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