Did anyone see 'Bang Goes the Theory - The Human Generator' on BBC1 last night? It was basically about the amount of electricity we use(waste) in our homes every day. In one section of the show, the tech guy they've got was trying to show how much heat energy is produced (and therefore wasted) by traditional filament bulbs by cooking a whole chicken in 90minutes using the heat from just two 100W filament bulbs. He was trying to highlight why low energy bulbs are so much better but i think this raises another issue:-
We had family round for sunday lunch last week and cooked a chicken in our electric fan assisted oven. This took 2 1/2 hours to roast in the oven with the oven rated at just over 2kW. Now i know the oven only uses this amount of power while it is actually heating up and once up to temperature it only comes on periodically to maintain the temperature but it would only have to be using 2kW for 6 minutes to use the same power as 2x100W bulbs do in an hour. So why aren't we using filament bulb technology to cook food? I reckon he used 0.3KwH to cook his chicken compared to our oven, which, if it only consumed power for 1/4 of the time the chicken was in (and that doesn't include the time it took to warm up initially) consumed 1.25KwH - over four times as much?
I presume there must be a reason, just wondered if anyone knows what it is??
We had family round for sunday lunch last week and cooked a chicken in our electric fan assisted oven. This took 2 1/2 hours to roast in the oven with the oven rated at just over 2kW. Now i know the oven only uses this amount of power while it is actually heating up and once up to temperature it only comes on periodically to maintain the temperature but it would only have to be using 2kW for 6 minutes to use the same power as 2x100W bulbs do in an hour. So why aren't we using filament bulb technology to cook food? I reckon he used 0.3KwH to cook his chicken compared to our oven, which, if it only consumed power for 1/4 of the time the chicken was in (and that doesn't include the time it took to warm up initially) consumed 1.25KwH - over four times as much?
I presume there must be a reason, just wondered if anyone knows what it is??