Study of capillary tube applications in a transcritical heat pump system

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

Abstrakty

EN

Capillary tubes have been used in refrigeration systems for many years, but not with a transcritical CO[2] system. The effects of capillary tubes in a transcritical CO[2] refrigerating system have been investigated theoretically. This paper presents a non-adiabatic homogeneous model of carbon dioxide flow through a capillary tube, where the carbon dioxide undergoes a phase change from supercritical fluid flow to subcritical two-phase flow. The model is based on fundamental conservation equations of mass, momentum and energy. These equations are solved simultaneously through iterations. The in-tube flow can be divided into a single-phase region and a two-phase region. The extreme choked situation at the outlet is evaluated by local sonic velocity judgment. Relationships between gas cooler pressure, evaporating temperature, ambient heat transfer coefficient and other parameters are presented and analyzed in detail.

Słowa kluczowe

EN

capillary tube; heat pump; transcritical cycle

PL

pompa ciepła; rury powierzchniowe

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2006
• Tom: Vol. 27, no. 4
• Strony: 123--146
• Opis fizyczny: Rys., wz., wykr.,Bibliogr. 27 poz.,

Twórcy

autor

Królicki Z.

autor

Białko B.

• Mechanika, chłodnictwo, radiestezja. Prof. Polit. Wrocławskiej.

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