Optimization of transcritical CO[2] thermodynamic cycle for cooling and heating applications

• Autorzy: Białko B. , Królicki Z. , Zajączkowski B.
• Języki publikacji: EN

Abstrakty

EN

CO[2] is a potential substitute for synthesized refrigerants with favourable environmental properties. Improvment of the coefficient of performance (COP) of carbon dioxide refrigeration, heat pumping and heating - cooling systems is a necessary condition. Energetic and thermodynamic analysis as well as optimisation studies of an isentropic and nonisentropic compression process are presented in the article. The results show that COP of the transcritical carbon dioxide cycle varies with the heat rejection pressure. Maximum COP occurs at an optimal heat rejection pressure, which depends mainly on outlet temperature of the gas cooler, evaporation temperature and performance of compressor. Correlations of the optimal heat rejection pressure in terms of appropriate parameters were obtained for specific conditions based on simulations of the cycle. The COP changes indicate that such system is more suitable for high heating end temperatures and modest cold end temperatures. Expressions for optimum cycle parameters have been developed. These correlations offer useful guidelines for optimal system design and for selection of appropriate operating conditions.

Słowa kluczowe

EN

coefficient of performance; COP; transcritical cycle

PL

współczynnik wydajności chłodniczej

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2006
• Tom: Vol. 27, no. 4
• Strony: 23--34
• Opis fizyczny: Wz., wykr.,Bibliogr. 9 poz.,

Twórcy

autor

Białko B.

autor

Królicki Z.

autor

Zajączkowski B.

• Politechnika Wrocławska, Instytut Techniki Cieplnej i Mechaniki Płynów, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

Bibliografia

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