2007-12-25 14:15:46 · 10 answers · asked by wholt 1 in Cars & Transportation ➔ Other - Cars & Transportation
the work done by the stove is not like of that in the car engine..
in the car gas is burned through the engine's cylinder by the piston by compression with the help of gases and heat it's self..
in the gas stove heat is transferred to the pan or pot by convection and some other types radiation..the work is done to the pot when it is heated and the food being cooked..
2007-12-26 21:26:25 · answer #1 · answered by mackie 5 · 0⤊ 0⤋
While true that fuel "burned" in a cooking stove produces "only" heat, it is equally true that the desired "work" of the stove is to cook, whereas the heat energy produced in the auto engine is extracted as mechanical energy to drive the car over the ground.
Or at least a portion of it is used that way - there are always losses. The engine is designed to mechanically react to the expansion of gasses as fuel is burned and heat is produced (a piston is forced downward giving linear motion to a connecting rod, thence rotary motion to the crankshaft, etc.). Since this is an imperfect process, some of the heat energy is wasted and is lost through the exhaust and cooling system.
The stove of course is designed to focus heat for the purpose of transferring that energy into food for cooking purposes. Notice the food gets hot - and notice too that you get hot standing over it due to lost heat - the stove too is an imperfect device for converting energy to useful purpose.
Good question - thanks!
2007-12-25 22:25:42 · answer #2 · answered by Right Guard 6 · 0⤊ 1⤋
With an engine, the fuel and air mix is compressed which creates pressure. The heat produces is also contained in an enclosed space, which then pushes the piston down. On a stove, there's nothing to compress the fuel air mix, resulting in just a flame and no explosion and nothing contain the heat and pressure.
2007-12-26 15:41:07 · answer #3 · answered by bikinkawboy 7 · 0⤊ 0⤋
With the exception of camp stoves, gasoline is seldom used in cook stoves, usually it's natural gas.
And the heat to cook does equal work, there is a transfer of energy from the heat of the flame to the food.
Although I'm not sure what you are really asking.
2007-12-25 22:24:48 · answer #4 · answered by oklatom 7 · 0⤊ 1⤋
you forgot to mention the electrical energy from the car battery! Causes the motors in the car engine to turn, contributing to the mechanical motion. I am pretty sure if we needed a part of the stove to rotate in order for the stove to function, an electrical energy would be needed to initiate the motion. But since we only need only the heat, gas works just fine.
2007-12-25 22:42:34 · answer #5 · answered by mike o 1 · 0⤊ 2⤋
That is correct. Stoves are not constructed to produce work.
2007-12-25 22:49:04 · answer #6 · answered by Firebird 7 · 0⤊ 1⤋
No moving parts in a stove...
2007-12-25 22:21:17 · answer #7 · answered by Ernie G 2 · 1⤊ 2⤋
work<===>heat
2007-12-25 22:20:16 · answer #8 · answered by friedach 6 · 0⤊ 3⤋
yes thats right
2007-12-25 22:24:06 · answer #9 · answered by Nancy 3 · 1⤊ 2⤋
what's your question?.
2007-12-25 22:19:08 · answer #10 · answered by rmrndrs 4 · 0⤊ 2⤋