Comparison between different design concepts of receivers/reactors for thermochemical conversion of concentrated solar energy

• Autorzy: Amhalhel G. A. , Furmański P.
• Języki publikacji: EN

Abstrakty

EN

In this paper, a zero-order mathematical model based on first law analysis of the Thermochemical Energy Conversion (TCEC) process of concentrated solar energy have been developed. The model assumptions consider the general case for which the receiver/reactor is the direct volumetric absorption and/or indirect receiver/reactor. The thermal decomposition of a single chemical species and endothermic reversible chemical reaction is considered as the reaction system. A qualitative comparison of the model results gave a satisfactory agreement with selected experimental results. The proposed model was used to compare the general thermochemical behavior of the three general types of receivers/reactors proposed for the TCEC process operating in both continuous and in the discontinuous flow regimes. Comparison of the thermal characteristics of the TCEC process with other traditional conversion processes was also performed. Finally, conclusions were drawn to assist any further development and understanding of the TCEC process.

PL

W artykule zaproponowano zerowymiarowy model układu odbiornik promieniowania/reaktor chemiczny umożliwiający analizę energetyczną termochemicznej konwersji energii (TCEC) promieniowania słonecznego. Model ten opisuje ogólny przypadek, gdy pochłanianie promieniowania słonecznego odbywa się na powierzchni lub w objętości odbiornika/reaktora. W reaktorze zachodzi endotermiczna, odwracalna reakcja chemiczna związana z rozkładem pojedynczej substancji. Jakościowe porównanie wyników otrzymanych z modelu z wynikami wybranych badań doświadczalnych, zamieszczonych w literaturze, dało zadawalający rezultat. Następnie wykorzystano opracowany model do analizy porównawczej zachowania trzech typów układu odbiornik promieniowania/reaktor zaproponowanych do realizacji procesu TCEC i pracujących przy ciągłym przepływie czynnika roboczego przez reaktor oraz przy braku przepływu czynnika. Dokonano porównania charkterystyk cieplnych procesu TCEC z innymi klasycznymi procesami konwersji energii promieniowania słonecznego. Pracę zakończono wnioskami dotyczącymi dalszego rozwoju i rozumienia procesu termochemicznej konwersji energii promieniowania słonecznego.

Słowa kluczowe

EN

thermochemical energy conversion; solar energy; reactors

PL

termochemiczna konwersja energii; promieniowanie słoneczne; reaktory

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Biuletyn Instytutu Techniki Cieplnej Politechniki Warszawskiej
• Rocznik: 2004
• Tom: nr 89/90
• Strony: 59--83
• Opis fizyczny: Bibliogr. 31 poz., tab., wykr.

Twórcy

autor

Amhalhel G. A.

• Institute of Heat Engineering

autor

Furmański P.

• Institute of Heat Engineering

Bibliografia

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