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单词 Temperature entropy diagram
释义

Temperature entropy diagram

英语百科

Temperature–entropy diagram

This example T-s diagram shows a thermodynamic cycle taking place between a hot reservoir at temperature TH and a cold reservoir at temperature TC. For reversible processes, such as those found in the Carnot cycle, the area in red QC is the amount of energy exchanged between the system and the cold reservoir. The area in white W is the amount of work energy exchanged by the system with its surroundings. The amount of heat QH exchanged with the hot reservoir is the sum of the two. The thermal efficiency of the cycle is the ratio of the white area (work) divided by the sum of the white and red areas (total heat). If the cycle moves in a clockwise sense then it is a heat engine that outputs work, if the cycle move in a count-clockwise sense it is a heat pump the takes in work and moves heat QH from the cold reservoir to the hot reservoir.
T-s diagram for steam, US units.

A temperature entropy diagram, or T-s diagram, is used in thermodynamics to visualize changes to temperature and specific entropy during a thermodynamic process or cycle. It is a useful and common tool, particularly because it helps to visualize the heat transfer during a process. For reversible (ideal) processes, the area under the T-s curve of a process is the heat transferred to the system during that process.

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更新时间:2025/6/20 10:47:39