this ppt is about Principle of clothes drying in washing machine

1. PRINCIPLE OF CLOTHES DRYING IN WASHING
MACHINE
SUBMITTED BY:
B. AKSHAY KUMAR
SEC:E1712
ROLL.NO: RE1712B44SUBMITTED TO:
SUMAN RANI
DEPARTMENT OF PHYSICS

2. CLOTHES DRYER
• A CLOTHES DRYER IS A POWERED HOUSEHOLD APPLIANCE THAT IS USED TO
REMOVE MOISTURE FROM A LOAD OF CLOTHING, USUALLY SHORTLY AFTER
THEY ARE WASHED IN A WASHING MACHINE.

3. FACTORS RESPONSIBLE FOR HEAT IN DRYERS
•HEATER.
•THERMOSTAT.
•THERMISTOR.
•PRESSURE SWITCH/LEVEL SENSOR.

4. PERFECT CONDITIONS FOR DRYING CLOTHES
•1. HIGH TEMPERATURES
•2. AIR MOVEMENTS
•3. LOW HUMIDITY

5. TYPES OF CLOTHES DRYER
• THERE ARE TWO TYPES OF DRYING SYSTEMS USED:
1. THE VENTED DRYER.
2.THE CONDENSING DRYER.
3. THE TUMBLER DRYER.
• BOTH 1&2 TYPES SHARE THE FOLLOWING COMMON FEATURES:
-A BLOWER MOTOR TO CIRCULATE AIR THROUGH THE MACHINE.
-HEATING ELEMENTS TO SUPPLY HOT AIR.
-THERMOSTATS AND SAFETY DEVICES FOR TEMPERATURE CONTROL.
- A TIMING DEVICE TO SET THE DRYING TIME.

6. TUMBLER DRYER
• TUMBLE DRYERS CONTINUOUSLY DRAW IN THE AMBIENT AIR AROUND THEM
AND HEAT IT BEFORE PASSING IT THROUGH THE TUMBLER. THE RESULTING
HOT, HUMID AIR IS USUALLY VENTED OUTSIDE TO MAKE ROOM FOR MORE AIR
TO CONTINUE THE DRYING PROCESS.

8. VENTED DRYER
• VENTED, CONDENSER AND HEAT PUMP DRYERS. VENTED TUMBLE DRYERS WORK
BY EXPELLING WARM, DAMP AIR THROUGH A HOSE AND OUT OF AN OPEN WINDOW
OR A VENT INSTALLED IN AN EXTERNAL WALL. THEY ARE GENERALLY MORE
AFFORDABLE THAN CONDENSER MODELS.

10. CONDENSING DRYER
• THE CONDENSING DRYER SYSTEM WORKS BY RE-CIRCULATING AIR IN A
CLOSED SYSTEM. THE WARM MOIST AIR IS THEN SUCKED UP A CONDENSING
HOUSING WHERE IT MEETS A FINE SPRAY OF COLD WATER PROVIDED BY AN
EXTRA OUTLET ON THE INLET VALVE. THE STEAM IS FLASHED OFF AND COLD,
DRY AIR RETURNS TO THE BLOWER MOTOR.

12. QUESTIONS…..

13. THANK YOU..