design a 1200-W electric hair dryer such that the air temperature and velocity in the dryer will not exceed 50 C and 3 m/s respectively
me too have same question.. IF I find the answer I will write here
hope to solve it before 29 of may
To design an electric hair dryer that meets these specifications, we need to consider the power, temperature, and velocity of the air.
1. Power (P):
The power of the hair dryer is given as 1200 Watts (W). This means that the hair dryer consumes 1200 Joules of energy per second.
2. Air Temperature (T):
To ensure that the air temperature does not exceed 50°C, we need to control the heating mechanism of the hair dryer. One way to accomplish this is by using a heating element with a thermostat. The heating element should produce enough heat to raise the air temperature, but the thermostat will detect when the desired temperature has been reached and switch off the heating element. This will prevent the air from becoming too hot.
3. Air Velocity (V):
To ensure that the air velocity does not exceed 3 m/s, we need to design an appropriate airflow mechanism. This can be achieved by using a fan with adjustable speed settings. By controlling the fan speed, we can regulate the air velocity. Additionally, the design of the nozzle and vent system can also help in directing and limiting the airflow, preventing it from exceeding 3 m/s.
In summary, to design a 1200-W electric hair dryer that does not exceed an air temperature of 50°C and an air velocity of 3 m/s, we need to consider using a heating element with a thermostat to control the temperature and a fan with adjustable speed settings to regulate the airflow. Additionally, carefully designing the nozzle and vent system can also help in achieving the desired results.