Search results for: BRAYTON CYCLE

• Organic Rankine cycle as bottoming cycle to a combined Brayton and Clausius - Rankine cycle

  Publication

  • D. Mikielewicz
  • E. Żmuda

  - Year 2013

  A preliminary evaluation has been made of a possibility of bottoming of a conventional Brayton cycle cooperating with the CHP power plant with the organic Rankine cycle installation. Such solution contributes to the possibility of annual operation of that power plant, except of operation only in periods when there is a demand for the heat. Additional benefit would be the fact that an optimized backpressure steam cycle has the advantage...

• Power enhancement of the Brayton cycle by steam utilization

  Publication

  • K. Jesionek
  • A. Chrzczonowski
  • P. Ziółkowski
  • J. Badur

  - Archives of Thermodynamics - Year 2012

  The paper presents thermodynamic analysis of the gas-steam unit of the 65 MWe combined heat and power station. Numerical analyses of the station was performed for the nominal operation conditions determining the Brayton and combined cycle. Furthermore, steam utilization for the gas turbine propulsion in the Cheng cycle was analysed. In the considered modernization, steam generated in the heat recovery steam generator unit is directed...

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• Organic Rankine as bottoming cycle to a combined Brayton and Clausius-Rankine cycle

  Publication

  • D. Mikielewicz
  • J. Wajs
  • E. Żmuda

  - Key Engineering Materials - Year 2014

  This paper presents an enhanced approach, as it will be considered here that the ORC installation could be extra-heated with the bleed steam, a concept presented by the authors. In such way the efficiency of the bottoming cycle can be increased and an amount of electricity generated increases. A thermodynamic analysis and a comparative study of the cycle efficiency for a simplified steam cycle cooperating with ORC cycle will be...

• Enhancement of the Brayton cycle efficiency by water or steam utilization

  Publication

  • K. Jesionek
  • A. Chrzczonowski
  • P. Ziółkowski
  • J. Badur

  - Transactions of the Institute of Fluid-Flow Machinery - Year 2013

  In the paper, thermodynamic analysis of two modifications of a Brayton cycle into enhancement cycles with water/steam injection are discussed. The first one deals with a STIG modified system with both interstage compressed air cooling and air heating (heat regeneration) before combustion chamber. The second one, mainly devoted to higher steam/air ratio, is connected with separate steam production in a HRSG. The analysis has been...

• Thermodynamic analysis of the double Brayton cycle with the use of oxy combustion and capture of CO2

  Publication

  • P. Ziółkowski
  • W. Zakrzewski
  • O. Kaczmarczyk
  • J. Badur

  - Archives of Thermodynamics - Year 2013

  In this paper, thermodynamic analysis of a proposed innovative double Brayton cycle with the use of oxy combustion and capture of CO2, is presented. For that purpose, the computation flow mechanics (CFM) approach has been developed. The double Brayton cycle (DBC) consists of primary Brayton and secondary inverse Brayton cycle. Inversion means that the role of the compressor and the gas turbine is changed and firstly we have expansion...

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• An energetic analysis of a gas turbine with regenerative heating using turbine extraction at intermediate pressure - Brayton cycle advanced according to Szewalski's idea

  Publication

  • P. Ziółkowski
  • J. Badur
  • P. Ziółkowski

  - ENERGY - Year 2019

  In this paper, a modification of a simple gas turbine into the Brayton cycle with regenerative heating, using turbine extraction at intermediate pressure, is presented. The main concept of the retrofitting is based on the transfer of heat from the turbine exhaust gases to the air entering the combustion chamber. The extracted gas transfers heat to air via the divided regenerative heat exchanger and after that is compressed and...

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• CELL CYCLE

  Journals

  ISSN: 1538-4101 , eISSN: 1551-4005

• Comparative study of a bottoming SRC and ORC for Joule–Brayton cycle cooling modular HTR exergy losses, fluid-flow machinery main dimensions, and partial loads

  Publication

  • T. Kowalczyk
  • J. Badur
  • P. Ziółkowski

  - ENERGY - Year 2020

  Energy conversion efficiency increase in power plants with high-temperature gas-cooled reactors via implementation of the bottoming cycle was investigated under nominal and minimal thermal load of a high-temperature reactor (HTR). Heat transfer surface area and turbine outlet volumetric flow rate in bottoming cycles was also investigated. Water and two low-boiling point working fluids (ammonia and ethanol) were analyzed. Analyzed...

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• Water Cycle

  Journals

  eISSN: 2666-4453

• Revenue-cycle strategist

  Journals

  ISSN: 1549-0858