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Wyszukujesz frazę "mikrokogeneracja" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Alternative cogeneration thermodynamic cycles for domestic ORC
Autorzy:
Mikielewicz, D.
Wajs, J.
Mikielewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/185524.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
microcogeneration
thermodynamic cycle
power generation
mikrokogeneracja
cykl termodynamiczny
wytwarzanie energii
Opis:
The Organic Flash Cycle (OFC) is suggested as a vapor power cycle that could potentially improve the efficiency of utilization of the heat source. Low and medium temperature finite thermal sources are considered in the cycle. Additionally the OFC’s aim is to reduce temperature difference during heat addition. The study examines 2 different fluids. Comparisons are drawn between the OFC and an optimized basic Organic Rankine Cycle (ORC). Preliminary results show that ethanol and water are better suited for the ORC and OFC due to higher power output. Results also show that the single flash OFC achieves better efficiencies than the optimized basic ORC. Although the OFC improves the heat addition exergetic efficiency, this advantage was negated by irreversibility introduced during flash evaporation.
Źródło:
Chemical and Process Engineering; 2018, 39, 1; 75--84
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic effectiveness evaluation of the free piston Stirling engine-based micro-combined heat and power unit in relation to classical systems
Autorzy:
Uchman, Wojciech
Remiorz, Leszek
Kotowicz, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/240538.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heating systems
cost analysis
stirling engine
micro-cogeneration
system ciepłowniczy
analiza kosztów
mikrokogeneracja
Opis:
In this article, a comparison of economic effectiveness of various heating systems dedicated to residential applications is presented: a natural gas-fueled micro-cogeneration (micro-combined heat and power – µCHP) unit based on a free-piston Stirling engine that generates additional electric energy; and three so-called classical heating systems based on: gas boiler, coal boiler, and a heat pump. Calculation includes covering the demand for electricity, which is purchased from the grid or produced in residential system. The presented analyses are partially based on an experimental investigation. The measurements of the heat pump system as well as those of the energy (electricity and heat) demand profiles in the analyzed building were conducted for a single-family house. The measurements of the µCHP unit were made using a laboratory stand prepared for simulating a variable heat demand. The overall efficiency of the µCHP was in the range of 88.6– 92.4%. The amounts of the produced/consumed energy (electricity, heat, and chemical energy of fuel) were determined. The consumption and the generation of electricity were settled on a daily basis. Operational costs of the heat pump system or coal boiler based heating system are lower comparing to the micro-cogeneration, however no support system for natural gas-based µCHP system is included.
Źródło:
Archives of Thermodynamics; 2019, 40, 1; 71-83
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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