Air conditioning units are sometimes placed on the roof of homes in the city. Occasionally, the air conditioners cause an undesirable hum throughout the upper floors of the homes. Why does this happen? What can be done to reduce the hum?

Q: answer this;  Discuss which factors must be considered when selecting an appropriate refrigerant?

A: When selecting a refrigerant, there's a complex interplay between several factors, demanding a…

Q: Q8. In a refrigeration system using Refrigerant-134a as a working fluid, which condenser pressure…

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A: Option first is correct: An increase in pressure causes the refrigerant gas to evaporate.

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A: Given: Processes for which gas does work.

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Q: ciency of what cycle is determined using a parameter called "thermal efficiency"? power cycle…

A: To determine efficiency of what cycle is determined using a parameter called "thermal efficiency".

Q: Describe a refrigerator that violates the Clausius statement of the second law

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