COP modeling in transcritical N20 cycle realized by heat pump

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

Abstrakty

EN

The paper presents thermodynamic analyses and studies based on maximum heating coefficient of a transcritical N2O heat pump cycle and energetic comparisons with CO2 cycle. Maximum COP occurs at an optimal heat rejection pressure which depends mainly on the outlet temperature of the gas cooler, the evaporation temperature and the 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. An expression for optimum discharge pressure has been developed. Variation trends of optimal parameters for the N2O system are similar to that of a CO2 system. The N2O cycle exhibits higher cooling COP, lower compressor pressure ratio and lower discharge pressure and temperature, and higher second law efficiency when compared to CO2 based systems.

Słowa kluczowe

PL

pompa ciepła; obieg nadkrytyczny; podtlenek azotu

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Systems : journal of transdisciplinary systems science
• Rocznik: 2010
• Tom: Vol. 14, No sp.
• Strony: 61--70
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Królicki Z.

• Politechnika Wrocławska, Instytut Techniki Cieplnej i Mechaniki Płynów

autor

Białko B.

• Politechnika Wrocławska, Instytut Techniki Cieplnej i Mechaniki Płynów

autor

Zajączkowski B.

• Politechnika Wrocławska, Instytut Techniki Cieplnej i Mechaniki Płynów

Bibliografia

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