An automobile engine heater is an electrical resistance heater that is plugged into a 110. V ac outlet and inserted into the oil dipstick tube of the engine. Its purpose is to keep the engine oil warm during the winter when the car is not in use, thus allowing the engine to start easier.
Determine the steady state irreversibility produced during an 8.00 h period by a 100. W steady state engine heater whose surface is isothermal at 90.0°C.