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Warianty tytułu
Aktualne kierunki badań w procesie stosowania mieszanin zeotropowych w instalacjach energetycznych; Cykl porównawczy Lorenza
Języki publikacji
Abstrakty
This paper is devoted to modern research directions and the development of the use of zeotropic mixtures in compact heat exchangers presents selected problems regarding the use of zeotropic mixtures in the implementation of refrigeration cycles in heat pumps. The phenomenon of temperature glide occurring in phase transitions has a significant impact on the selection of an appropriate reference circuit. For homogeneous refrigerants and for azeotropic mixtures, the reference cycle is the Carnot cycle with constant source temperature levels. In the case of zeotropic mixtures, due to temperature glide, there is a system with variable values of the temperature of the heat sources, for which the Lorenz cycle is an appropriate pattern. The method of calculating the coefficient of performance of a heat pump operating according to such a cycle and the criteria for assessing the approximation of the real cycle to the model cycle is given.
W artykule omówiono współczesne kierunki badań i rozwój zastosowań mieszanin zeotropowych w kompaktowych wymiennikach ciepła. Przedstawiono wybrane zagadnienia dotyczące zastosowania mieszanin zeotropowych w realizacji obiegów chłodniczych w pompach ciepła. Zjawisko poślizgu temperaturowego występujące w przejściach fazowych ma istotny wpływ na dobór odpowiedniego obiegu porównawczego. W przypadku jednorodnych czynników chłodniczych i mieszanin azeotropowych cyklem referencyjnym jest cykl Carnota ze stałym poziomem temperatury źródła. W przypadku mieszanin zeotropowych, ze względu na poślizg temperaturowy, istnieje układ o zmiennych wartościach temperatury źródeł ciepła, dla którego właściwym wzorcem jest cykl Lorenza. W artykule podano sposób obliczania współczynnika wydajności pompy ciepła pracującej według takiego cyklu oraz kryteria oceny przybliżenia cyklu rzeczywistego do cyklu wzorcowego.
Czasopismo
Rocznik
Tom
Strony
17--25
Opis fizyczny
Bibliogr. 60 poz., rys., wzory
Twórcy
autor
- Koszalin University of Technology, Department of Mechanical Engineering
autor
- Koszalin University of Technology, Department of Mechanical Engineering
autor
- Koszalin University of Technology, Department of Mechanical Engineering
Bibliografia
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Uwagi
1. Błędna numeracja bibliografii.
2. Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e244412d-51ef-4711-b27f-60a1137f517c