【Daily Topic】【HVAC Version 20170518】
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Participation reward: 2 Wealth. Correct reward: 6 wealth. Multiple-choice question: There is an air-conditioned room in which air is supplied through circular diffusers; using the isothermal jet theory, the average wind speed inside the room is calculated to be 0.25 m/s. What are the average wind speeds inside the room when cool air is supplied in summer and hot air is supplied in winter? ( ) A. 0.25m/s, 0.25m/s B. 0.25m/s, 0.2m/s C. 0.3m/s, 0.2m/s D. 0.3m/s, 0.25m/s C
C.0.3m/s，0.2m/s
C.0.3m/s，0.2m/s
In an air-conditioned room where air is supplied through circular diffusers, the average wind speed inside is calculated to be 0.25 m/s based on isothermal jet theory; therefore, the average wind speeds inside when cool air is supplied in summer and hot air is supplied in winter are respectively (c). A. 0.25m/s, 0.25m/s B. 0.25m/s, 0.2m/s C. 0.3m/s, 0.2m/s D. 0.3m/s, 0.25m/s