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Wyświetlanie 1-3 z 3
Tytuł:
Stirling engines - the state of technology development and computational models
Autorzy:
Furmanek, Mariusz
Kropiwnicki, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2097645.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
Stirling engines
numerical models
commercial design
low-temperature sources
renewable energy sources
silniki Stirlinga
modele numeryczne
projekt użytkowy
źródła niskotemperaturowe
odnawialne źródła energii
Opis:
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 when applying renewable energy sources or waste heat from other processes. The first part of the work presents an overview of available commercial Stirling engine solutions. The second part of the work presents an overview of numerical models of Stirling engine operation, which enable the correct selection of the main geometrical features of the devices and the improvement of the structure in order to maximize efficiency or power.
Źródło:
Combustion Engines; 2022, 61, 1; 3--12
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the regenerative braking process for the urban traffic conditions
Autorzy:
Kropiwnicki, Jacek
Furmanek, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/132918.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
regenerative braking
real traffic conditions
hybrid vehicles
electric vehicles
energy consumption
route planning
hamowanie odzyskowe
rzeczywiste warunki ruchu
pojazdy hybrydowe
pojazdy elektryczne
zużycie energii
planowanie trasy
Opis:
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 systems as well as navigation systems should take into account the possibility of the energy recovery in the process of regenerative braking. For this purpose, a model of a regenerative braking process may be helpful, which on the one hand will enable to provide information on how traffic conditions will affect the amount of energy dissipated (wasted) into the atmosphere, on the other hand will help to optimize the route of vehicles with regenerative braking systems. This work contains an analysis of the process of the regenerative braking for the urban traffic conditions registered in Gdańsk. A model was also presented that allows calculating the amount of energy available from the braking process depending on the proposed variables characterizing the vehicle traffic conditions.
Źródło:
Combustion Engines; 2019, 58, 3; 203-207
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experiments on compression ignition engine powered by nano-fuels
Autorzy:
Cieśliński, Janusz T.
Krzyżak, Jan
Kropiwnicki, Jacek
Kneba, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/2097641.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
nano-fuels
compression ignition engine
fuel consumption
turbidity
fuel optical transparency
nanopaliwa
silnik o zapłonie samoczynnym
zużycie paliwa
mętność
wizualna przezroczystość paliwa
Opis:
The use of nanoparticles in fuels provides new opportunities for modification of fuel properties, which may affect the operational parameters of engines, in particular the efficiency and fuel consumption. The paper presents comparison of compression ignition engine performance fuelled with neat diesel and nano-diesel. Alumina (Al2O3) was used as nanoparticles. Surface-active substances, including Span 80 surfactant, as well as water admixture were used to improve the stability of the produced fuel. Measurements of the thermal conductivity and dynamic viscosity of the produced mixtures were conducted. In this study was used naturally aspirated, water cooled, four-stroke diesel engine. Addition of Al2O3 nanoparticles result in 4% reduced fuel consumption, addition of TiO2 nanoparticles result in 10% reduced fuel consumption with respect to neat diesel fuel.
Źródło:
Combustion Engines; 2022, 61, 1; 55--59
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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