Solved:
Answered by AI, Verified by Human Experts
A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it through the resistors where it is heated. If the density of air is 1.20 kg/m3 at the inlet and 1.035 kg/m3 at the exit, determine the percent increase in the velocity
A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it through the resistors where it is heated. If the density of air is 1.20 kg/m3 at the inlet and 1.035 kg/m3 at the exit, determine the percent increase in the velocity
Given:density of air at inlet,density of air at inlet,Solution:Now,(1)whereA = Area of cross section= velocity of air at inlet= velocity of air at outletNow, using eqn (1), we get:= 1.14% increase in velocity ==114%which is 14% moreTherefore % increase in velocity is 14%...
Unlock full access for 72 hours, watch your grades skyrocket.
For just $0.99 cents, get access to the powerful quizwhiz chrome extension that automatically solves your homework using AI. Subscription renews at $5.99/week.