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Statements

Subject Item
dbr:Saturation_vapor_curve
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rdfs:label
飽和蒸氣曲線 Saturation vapor curve
rdfs:comment
飽和蒸氣曲線是在熱力學的温熵图（T–s圖）分隔二相狀態及過熱蒸氣狀態的曲線。 （saturated liquid curve）是在温熵图中分隔二相狀態及過冷液體的曲線。 在热力学循环中，流體的膨脹和飽和蒸氣曲線的特性有關： * 「濕」流體會有負的飽和蒸氣曲線。在膨脹受到限制之前，流體已經過熱。在膨脹過程的最後，流體會是包括液態及氣態的兩相狀態。 * 等熵过程流體會有垂直的飽和蒸氣曲線。在假想的等熵过程後，仍非常接近飽和蒸氣的狀態。 * 「乾」流體會有正的飽和蒸氣曲線。在膨脹過程的最後，流體是在不帶液體的乾蒸氣狀態，是強烈過熱的狀態。 The saturation vapor curve is the curve separating the two-phase state and the superheated vapor state in the T–s diagram (temperature–entropy diagram). The is the curve separating the subcooled liquid state and the two-phase state in the T–s diagram. When used in a power cycle, the fluid expansion depends strongly on the nature of this saturation curve:
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n11:Isentropic_fluid.png n11:Wet_fluid.png n11:Dry_fluid.png
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dbc:Gases dbc:Thermodynamics dbc:Phases_of_matter
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dbr:Phase_diagram dbr:Subcooling n6:Isentropic_fluid.png dbr:Saturated_liquid_curve dbc:Gases dbr:Thermodynamic_cycle n6:Dry_fluid.png dbc:Thermodynamics dbr:Working_fluid dbr:Isentropic dbc:Phases_of_matter dbr:Temperature–entropy_diagram dbr:Working_fluid_selection n6:Wet_fluid.png
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dbo:abstract
飽和蒸氣曲線是在熱力學的温熵图（T–s圖）分隔二相狀態及過熱蒸氣狀態的曲線。 （saturated liquid curve）是在温熵图中分隔二相狀態及過冷液體的曲線。 在热力学循环中，流體的膨脹和飽和蒸氣曲線的特性有關： * 「濕」流體會有負的飽和蒸氣曲線。在膨脹受到限制之前，流體已經過熱。在膨脹過程的最後，流體會是包括液態及氣態的兩相狀態。 * 等熵过程流體會有垂直的飽和蒸氣曲線。在假想的等熵过程後，仍非常接近飽和蒸氣的狀態。 * 「乾」流體會有正的飽和蒸氣曲線。在膨脹過程的最後，流體是在不帶液體的乾蒸氣狀態，是強烈過熱的狀態。 The saturation vapor curve is the curve separating the two-phase state and the superheated vapor state in the T–s diagram (temperature–entropy diagram). The is the curve separating the subcooled liquid state and the two-phase state in the T–s diagram. When used in a power cycle, the fluid expansion depends strongly on the nature of this saturation curve: * A "wet" fluid shows a negative saturation vapor curve. If overheating before the expansion is limited, a two-phase state is obtained at the end of the expansion. * An "isentropic" fluid shows a vertical saturation vapor curve. It remains very close to the saturated vapor state after an hypothetical isentropic expansion. * A "dry" fluid shows a positive saturation vapor curve. It is in dry vapor state at the end of the expansion, and strongly overheated.
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dbr:Curve
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