Year 2022

• Stirling engines - the state of technology development and computational models

  Publication

  • M. Furmanek
  • J. Kropiwnicki

  - Combustion Engines - Year 2022

  Stirling engines represent a technologically important solution in combined heat and power systems. Their use enables the achievement of over 90 percent efficiency in the management of the primary energy source with a very high durability of the device, mainly due to the lack of contact of the working gas with external factors and a very small number of mechanical components. The use of a Stirling engine may be equally important...

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Year 2021

• Modular Approach for Modelling Warming Up Process in Water Installations with Flow-Regulating Elements

  Publication

  • J. Kropiwnicki
  • M. Furmanek
  • A. Rogala

  - ENERGIES - Year 2021

  The paper presents a new method for modelling the warming up process of a water system with elements regulating the flow in a stochastic manner. The paper presents the basic equations describing the work of typical elements which the water installation is composed of. In the proposed method, a new computational algorithm was used in the form of an iterative procedure enabling the use of boundary conditions that can be stochastically...

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Year 2020

• A Theoretical and Experimental Study of Moderate Temperature Alfa Type Stirling Engines

  Publication

  • J. Kropiwnicki
  • M. Furmanek

  - ENERGIES - Year 2020

  The Stirling engine is a device that allows conversion of thermal energy into mechanical energy with relatively high efficiency. Existing commercial designs are mainly based on the usage of high temperature heat sources, whose availability from renewable or waste heat sources is significantly lower than that of moderate temperature sources. The paper presents the results of experimental research on a prototype alpha type Stirling...

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Year 2019

• Analysis of the regenerative braking process for the urban traffic conditions

  Publication

  • J. Kropiwnicki
  • M. Furmanek

  - Combustion Engines - Year 2019

  In a regular drive system, with an internal combustion engine, vehicle braking is connected with the unproductive dissipation of kinetic and potential energy accumulated in the mass of the vehicle into the environment. This energy can constitute up to 70% of the energy used to drive a vehicle under urban conditions. Its recovery and reuse is one of the basic advantages of hybrid and electric vehicles. Modern traffic management...

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• Hydraulic resistance analyses of selected elements of the prototype Stirling engine

  Publication

  • M. Furmanek
  • J. Kropiwnicki

  - Archives of Thermodynamics - Year 2019

  The paper presents the results of simulation tests of hydraulic resistance and temperature distribution of the prototype Stirling alpha engine supplied with waste heat. The following elements were analyzed: heater, regenerator and cooler. The engine uses compressed air as a working gas. Analyses were carried out for three working pressure values and different engine speeds. The work was carried out in order to optimize the configuration...

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Year 2018

• WYKORZYSTANIE SILNIKA STIRLINGA DO ODZYSKU ENERGII ZE SPALIN

  Publication

  • J. Kropiwnicki
  • M. Furmanek

  - Autobusy. Technika, Eksploatacja, Systemy Transportowe - Year 2018

  Silnik Stirlinga jest urządzeniem wytwarzającym energię mechaniczną, w którym nie występuje spalanie paliwa wewnątrz cylindra. Dzięki temu możliwe jest zasilanie silnika energią z dowolnego źródła. Takim źródłem może być promieniowanie słoneczne, spalanie niskokalorycznego paliwa zachodzące w zewnętrznej komorze spalania lub energia odpadowa z innego urządzenia cieplnego, np. silnika spalinowego autobusu lub pojazdu ciężarowego....

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