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 itto 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. Thecróss-sectional area of the hair dryer at the exit is 60 cm4. Neglect the power consumed by the fan and the heat lossesthrough the walls of the hair dryer.T =P1= 100 kPaA2 = 60 cm2lllT= 25°CWe= 900 W%3DDetermine the volume flow rate of air at the inlet. You must provide an answer before moving to the next part.

Answered: Image /qna-images/answer/54d8da37-a562-43c7-9006-e040dbe2dfdd.jpg

Answered: A hair dryer is basically a duct in…

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

See similar textbooks

Similar questions

A mectal cylinder of 5 cm in diameter and initially at a temperature about 150 °C. the eylinder is suddenly immersed in liquid with temperature at 50 °C and heat transfer coeflicient about 2000 W/m.°C. Under typical operation conditions the center temperature and surface temperature are measured to be 110 °C and 90 °C after 1 minute, respectivielly. Calculate the thermal conductivity for this material.
Water is being heated in a close pan on top of a range while being stirred by a paddle wheel. During the process, 30kj of heat are transferred to the water, and 5kj of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N*m. Determine the final energy of the system if its initial energy is 10kj.
Thank you so much can you hand write clear please
The valve connected to a 450-liter insulated tank of air at 250 kPa and 50̊C is opened,allowing the gas to escape until its pressure drops to 120 kPa. An electric heater insidethe tank maintains the temperature at 50̊C. Using variable specific heats, Determine thefollowing:a) The mass of air withdrawn (kg)b) The energy input to the resistor (kJ)
A fluid with a pressure of 850kPa, a specific volume of 0.35m3/kg, and a velocity of 170m/s enter a device. The work done by the fluid is 480kJ/kg and the heat loss due to radiation is 30kJ/Kg. The exit condition of the fluid is 120kPa, 0.85m3/kg, and 350m/s. Determine the change in internal energy per unit mass.
There is a hot water source in New Delhi.Our plan is to use this heat source for heating and hot water supplies of a site of 50 hostels. The outlet temperature of the water from the source is 100°C. Calculate the power required for the pump used to pump the water to the surface. isentropic pump efficiency is 0.9
Steam at 5 MPa and 400°C enters a nozzle steadily with avelocity of 80 m/s, and it leaves at 2 MPa and 300°C. Theinlet area of the nozzle is 50 cm², andthe heat is beinglost at a rate of 120 kJ/s. Determine (a) the mass flow rate of the steam, (b) the exit velocity of the steam, and (c) the exitarea of the nozzle.
An adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the refrigerant from the condenser level to the evaporator level. The R-134a enters the capillary tube as a saturated liquid at 50°C and leaves at -22.00°C. Determine the quality of the refrigerant at the inlet of the evaporator. Use data from the tables. (Round the final answer to three decimal places.) The quality of the refrigerant is
A fluid at 690 kPa has a specific volume of 0.25 m³/kg and enters an apparatus with a velocity of 15 m/s. Heat radiation losses in the apparatus are equal to 25 kJ/kg of fluid supplied. The fluid leaves the apparatus at 135 kPa with a specific volume of 0.9 m³/kg and a velocity of 300 m/s. In the apparatus, the shaft work done by the fluid is equal to 900 kJ/kg. Does the internal energy of the fluid increase or decrease, and how much is the change?A. 858 kJ/kg (increase)B. 858 kJ/kg (decrease)C. 908 kJ/kg (increase)D. 908 kJ/kg (decrease)

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS