Wyniki wyszukiwania - BazTech

1

Economical analysis of electric vehicles in Poland

Bienek Filip, Szczygieł Ireneusz, Rutczyk Bartłomiej

Combustion Engines

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2023

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R. 62, nr 1

55--62

EN

The paper presents results obtained from calculations conducted to receive information on the capability of photovoltaic systems to power electric vehicles in regular use. The annual distance travelled was divided in nine categories. Every aspect of this analysis was suitable for Polish market and parameters given by the climate that is connected with geographical location of Poland. It is worth mentioning that one of the key elements is the law for renewable energy, that is the key aspect to economical benefits that come from so called green investments. Energy law was also taken into account during this simulation. All those aspects together summarized to a conclusions that Polish market is not as competitive as other European markets when electric propulsion is present in the system.

2

Theoretical analysis of LNG regasifier supplementing gas turbine cycle

Szczygieł Ireneusz, Rutczyk Bartłomiej Paweł

Archives of Thermodynamics

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2021

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Vol. 42, no 4

47--67

EN

Liquefied natural gas (LNG) is transported by the sea-ships with relatively low pressure (0.13–0.14 MPa) and very low temperature (about 100 K) in cryo-containers. Liquid phase, and the low temperature of the medium is connected with its high exergy. LNG receives this exergy during the liquefaction and is related with energy consumption in this process. When the LNG is evaporated in atmospheric regasifiers (what takes place in many on-shore terminals as well as in local regasifier stations) the cryogenic exergy is totally lost. fortunately, there are a lot of installations dedicated for exergy recovery during LNG regasification. These are mainly used for the production of electricity, but there are also rare examples of utilization of the LNG cryogenic exergy for other tasks, for example it is utilized in the fruit lyophilization process. In the paper installations based on the Brayton cycle gas turbine are investigated, in the form of systems with inlet air cooling, liquid phase injection, exhaust gas based LNG evaporation and mirror gas turbine systems. The mirror gas turbine system are found most exegetically effective, while the exhaust gas heated systems the most practical in terms of own LNG consumption.

3

Calculation of the furnace exit gas temperature of stoker fired boilers

Rutkowski Łukasz, Szczygieł Ireneusz

Archives of Thermodynamics

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2021

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Vol. 42, no 3

3--24

EN

In the paper the methodology of furnace exit gas temperature calculations by using well known normative standard method CKTI is presented. There are shown changes in methodology approach for three editions of it and in additional developments. Furnace exit gas temperature for two stoker grate boilers is calculated. By using described methods, it was possible to determine their effectiveness by comparing with measurements. Knowledge of the furnace exit gas temperature allows to define the division into irradiated and convection surfaces, which has an impact on the design features of the boiler as well as its dimensions and weight.

4

Kalibrowanie parametrów filtracyjnych warstw słabo przepuszczalnych na modelu numerycznym zbiornika triasowego w rejonie Strzelc Opolskich

Szczygieł Ireneusz, Kryza Józef, Fic Adam

Geologos

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2006

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Vol. 10

271--284

EN

In the paper, inverse method for the aquifer parameters estimation is presented. This method was utilized during the calibration of the numerical model of the Triassic water reservoir located near the Strzelce Opolskie. Both the inverse procedure and exemplary results on the model calibration are presented.