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Wyszukujesz frazę "odpadowa energia cieplna" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Analysis of thermal parameters of heat storages for use in vehicles with combustion engines
Autorzy:
Mężyk, Przemysław
Przybyła, Grzegorz
Petela, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/133178.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
thermal energy storage
heat storage
waste heat energy
engine heat balance
PCM
akumulacja energii cieplnej
akumulacja ciepła
odpadowa energia cieplna
bilans cieplny silnika
Opis:
The propulsion system of a vehicle using an internal combustion engine generates a significant amount of waste heat during operation, which is almost entirely discharged into the environment without any useful effect. One of the ways of using waste heat is storing it, and then using, for example, when starting the engine in winter conditions. The application of the indicated solution, in particular for the combat vehicle will allow to reduce the effects of cold start and will shorten the time of preparing such a vehicle for combat operations. The article presents: types of heat accumulators that could be used in a military vehicle, the results of preliminary tests carried out on the test stand and the impact of an additional heat source on the time of heating the internal combustion engine and on emission of exhaust gas components.
Źródło:
Combustion Engines; 2019, 58, 4; 119-125
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of waste heat energy sources of a conventional steam propulsion plant of an LNG carrier
Autorzy:
Adamkiewicz, Andrzej
Grzesiak, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/240754.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
waste heat energy
steam turbine
efficiency
propulsion plant
energia cieplna odpadowa
silnik parowy
wydajność
instalacja napędowa
Opis:
This paper presents the origins of marine steam turbine application on liquefied natural gas carriers. An analysis of alternative propulsion plant trends has been made. The more efficient ones with marine diesel engines gradually began to replace the less efficient plants. However, because of many advantages of the steam turbine, further development research is in progress in order to achieve comparable thermal efficiency. Research has been carried out in order to achieve higher thermal efficiency throughout increasing operational parameters of superheated steam before the turbine unit; improving its efficiency to bring it nearer to the ideal Carnot cycle by applying a reheating system of steam and multi stage regenerative boiler feed water heating. Furthermore, heat losses of the system are reduced by: improving the design of turbine blades, application of turbine casing and bearing cooling, as well as reduction in steam flow resistance in pipe work and maneuvering valves. The article identifies waste energy sources using the energy balance of a steam turbine propulsion plant applied on the liquefied natural gas carrier which was made out basing on results of a passive operation experiment, using the measured and calculated values from behavioral equations for the zero-dimensional model. Thermodynamic functions of state of waste heat fluxes have been identified in terms of their capability to be converted into usable energy fluxes. Thus, new ways of increasing the efficiency of energy conversion of a steam turbine propulsion plant have been addressed.
Źródło:
Archives of Thermodynamics; 2019, 40, 3; 195-210
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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