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Fluctuations in heat engines
and limitations for the fluctuating output power and efficiency of the small heat enginesAt the dawn of thermodynamics, Carnot's constraint on efficiency of heat based on systems as small as single atoms. At ...
Physical sciences
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Calculation of efficiency of hydrogen storage system at the fuel cells laborator
This paper deals with accumulation of electric power by means of hydrogen technology and reverse transformation of such power stored in hydrogen into electric power again. The crucial part of this paper comprises c...
JE - Nejaderná energetika, spotřeba a užití energie
- 2014 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
An exactly solvable model of a stochastic heat engine: optimization of power, power fluctuations and efficiency
efficiency at maximum power and discuss properties of the optimal protocol. Namely, we the output power but also the efficiency. Moreover, we calculate the variance of the output work and discuss the possibility o...
BE - Teoretická fyzika
- 2014 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Utilization of membrane technologies in nuclear power plants
This work contributes to the study of the possibility tu use membrane processes like reverse osmosis and elektrodialysis in water treatment in nuclear power plants. Based on laboratory experimental results, a mathematical model was ...
CI - Průmyslová chemie a chemické inženýrství
- 2013 •
- D
Rok uplatnění
D - Stať ve sborníku
Cycling Tames Power Fluctuations near Optimum Efficiency
According to the laws of thermodynamics, no heat engine can beat the efficiency of a Carrot cycle. This efficiency traditionally comes with vanishing power output and practical designs, optimized for power, general...
Physical sciences
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Dynamic study of the extraction ratio and interstage pressure ratio distribution in typical layouts of SCO2 Brayton cycle under temperature fluctuations
efficient but with a 34% smaller fluctuation amplitude compared to the recompression power generation and cycle efficiency, as well as more stable generated power. For the newly proposed layout, the pre-c...
Energy and fuels
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Technical Rreport for 2013 in frame of ReKyBo project supported bz TA ČR
The aim of the project are energy savings in nuclear power plant acheaved thanks to the substitution of evaporators by mebrane procecess-reverse osmosis. Based on laboratory tests data, mathematical model was developed to predict th...
CI - Průmyslová chemie a chemické inženýrství
- 2013 •
- Vsouhrn
Rok uplatnění
Vsouhrn - Souhrnná výzkumná zpráva
Extended Electric System Cascade Analysis (ESCA) for optimal power system targeting considering generation flexibility and heat rate factor
In order to cater for fluctuating energy demand, power plants are designed either as base power plant or peak power plant. The advantage of base power plant is that due to its constant power gener...
Chemical process engineering
- 2019 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Work and power fluctuations in a critical heat engine
point where Carnot's efficiency may be attained at a finite power as reported and power do not vanish in the infinite system size limit. Large fluctuations of outputWe investigate fluctuations of out...
Physical sciences
- 2017 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Fusion DEMO sCO2 layout design with battery farm
is the fusion reactor pulse operation. Due to the power fluctuations of the power source, there will be a significant impact on the power plant technology, turbine, etc. Therefore, a power conversion syst...
Fluids and plasma physics (including surface physics)
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
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