(d) A vacuum system is used to evacuate (purge) refrigerant gas from an air-conditioning system. i.If the required flow rate of air through the 30 mm diameter inlet pipe is 1.8 m3/minute, determine the pressure drop through the vacuum system, given that power consumption is 1kW, and the final air velocity in the vacuum chamber is negligible.(Take the density of air as 1.2 kg/m3) ii.If the ambient atmospheric pressure is 1.013 bar, also determine the vacuum pressure (suction) in torrs developed by the system.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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(d) A vacuum system is used to evacuate (purge) refrigerant gas from an air-conditioning system.
i.lf the required flow rate of air through the 30 mm diameter inlet pipe is 1.8 m3/minute, determine
the pressure drop through the vacuum system, given that power consumption is 1kW, and the final
air velocity in the vacuum chamber is negligible.(Take the density of air as 1.2 kg/m3)
ii.If the ambient atmospheric pressure is 1.013 bar, also determine the vacuum pressure (suction) in
torrs developed by the system.
Transcribed Image Text:(d) A vacuum system is used to evacuate (purge) refrigerant gas from an air-conditioning system. i.lf the required flow rate of air through the 30 mm diameter inlet pipe is 1.8 m3/minute, determine the pressure drop through the vacuum system, given that power consumption is 1kW, and the final air velocity in the vacuum chamber is negligible.(Take the density of air as 1.2 kg/m3) ii.If the ambient atmospheric pressure is 1.013 bar, also determine the vacuum pressure (suction) in torrs developed by the system.
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