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A hair dryer is basically a duct in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it to flow over the resistors whtere it is heated. Air enters a 900-W hair dryer at 100 kPa and 25°C and leaves at 377 K. The cróss-sectional area of the hair dryer at the exit is 60 cm2. Neglect the power consumed by the fan and the heat losses through the walls of the hair dryer. T2 = P = 100 kPa A2 = 60 cm? T = 25°C W = 900 W Determine the volume flow rate of air at the inlet. You must provide an answer before moving to the next part.

A hair dryer is basically a duct in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it to flow over the resistors whtere it is heated. Air enters a 900-W hair dryer at 100 kPa and 25°C and leaves at 377 K. The cróss-sectional area of the hair dryer at the exit is 60 cm2. Neglect the power consumed by the fan and the heat losses through the walls of the hair dryer. T2 = P = 100 kPa A2 = 60 cm? T = 25°C W = 900 W Determine the volume flow rate of air at the inlet. You must provide an answer before moving to the next part.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A hair dryerjs basically a duct in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it to flow over the resistors where it is heated. Air enters a 900-W hair dryer at 100 kPa and 25°C and leaves at 377 K. The cróss-sectional area of the hair dryer at the exit is 60 cm4. Neglect the power consumed by the fan and the heat losses through the walls of the hair dryer. T = P1= 100 kPa A2 = 60 cm2 lll T= 25°C We= 900 W %3D Determine the volume flow rate of air at the inlet. You must provide an answer before moving to the next part.
Transcribed Image Text:A hair dryerjs basically a duct in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it to flow over the resistors where it is heated. Air enters a 900-W hair dryer at 100 kPa and 25°C and leaves at 377 K. The cróss-sectional area of the hair dryer at the exit is 60 cm4. Neglect the power consumed by the fan and the heat losses through the walls of the hair dryer. T = P1= 100 kPa A2 = 60 cm2 lll T= 25°C We= 900 W %3D Determine the volume flow rate of air at the inlet. You must provide an answer before moving to the next part.
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