Numerical analysis of high temperature minichannel heat exchanger for recuperative microturbine system - Publikacja - MOST Wiedzy

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Numerical analysis of high temperature minichannel heat exchanger for recuperative microturbine system

Abstrakt

Considering the development of energy sector, distributed small-scale power generation, e.g., gas micro-CHP, is attracting considerable interest. In such installations, the heat exchanger is one of the key components possessing a significant influence on overall performance. Most studies concentrate on units operating below 900C, which do not fulfil the requirements of gas micro-CHP. Therefore, there remains a challenge to design a compact heat exchanger with passive technologies of heat transfer enhancement. This work describes the implementation of the own construction of a plate minichannel heat exchanger for high-efficiency gas microturbine engines with an external combustion chamber, supplied with air at a temperature of about 1000C. The results of this study will greatly contribute to the increase of system efficiency. To understand transport phenomena occurring inside it, a numerical model of the entire heat exchanger was developed in OpenFOAM. Defined boundary conditions were based on experimental data used also to validate the numerical model. The pressure drop experimental and numerical results agreed within the 2%-14% range, while the heat rate ones e within the 1%-8% of the range. In addition, numerical analysis exhibited the limits of thermal and exergetic efficiency values possible to be obtained, when the boundary conditions are strongly controlled.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
ENERGY nr 238,
ISSN: 0360-5442
Język:
angielski
Rok wydania:
2022
Opis bibliograficzny:
Wajs J., Kura T., Mikielewicz D., Fornalik-Wajs E., Mikielewicz J.: Numerical analysis of high temperature minichannel heat exchanger for recuperative microturbine system// ENERGY -Vol. 238,iss. Part A (2022), s.121683-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.energy.2021.121683
Weryfikacja:
Politechnika Gdańska

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