How many calories does it take to run household appliances?

Question

How does one compute going from Volts, Watts and Amps to Calories? Is there a way to say that I used 500 calories (kcal) on my treadmill at the health club and if I could have applied it magically, it would have run two loads of laundry through my washer/dryer (or something similar)?

Answer 1

There are 4.2 joules in 1 calorie, so 1 kcal is 4200 joules. Or 500 kcal = 2.1 Megajoule.

The washer runs at 117 Volts AC. You need to measure or estimate how much current the washer uses. Then you multiply the two to get power. Power = V*I in Volt-Amps or Watts. Then multiply by the number of seconds it runs at that power level to get the energy.

If it uses 8 amps for 20 minutes, then the energy is

E = 117*8*20*60 = 1.1e06 Watts-sec or 1.1 Megajoules

The max. current is listed on the power tag mounted near the power cord. The first difficulty is that the washer runs through different cycles & the power varies a great deal.

Secondly, when the power consumption is high, it is a running motor that is electrically reactive, so the real power may lower than the Volt-Amp level. Maybe 20% lower??

Some of my numbers are a total guess, but yes I think you've done enough work for at least 1 washer load or maybe even two. Of course you didn't consider the power it takes to heat the water!!!

Answer 2

surely, A refrigerator isn't the main costly equipment. particular it runs 3 hundred and sixty 5 days around even with the shown fact that it does not almost as much as different home equipment. A dryer attracts greater, it makes use of 220 no longer one hundred ten like a refrigerator. In my domicile that's the dryer that runs alot. in accordance to the internet internet site in my source, at $0.11 a kilowatt hour in my section, PA, a dryer expenditures $900 a 300 and sixty 5 days to run, 5 hours an afternoon, daily for a 300 and sixty 5 days. while in comparison with the refrigerator that runs 24/7/365, at $900. As on your theory particular its cool, yet impractical. it may could desire to be below 40 ranges to run the refrigerator, and below 30 to run the freezer, so in case you discovered the thank you to divert the air interior, you nonetheless could have the concern of the version between the refrigerator and freezer. then you certainly besides could have the concern that temperatures variety up and down all 3 hundred and sixty 5 days around so, say you have warmth wave in january and its 50 exterior all you nutrition is gonna bypass undesirable. in case you reside interior the city, its no longer sensible because of the fact city's are packed with polution and that i does no longer elect to consume nutrition that has been smellified with motor vehicle exhaust. finally decrease back to the temperature fluctuations, interior the summertime you may elect to have an compressor to take a seat back the refrigerator, and by the time you purchase adequate ducting, pay somebody to place in it and purchase the refrigerator, i could fairly pay the greater money a 300 and sixty 5 days and have my nutrition stored at a relentless temp.

Answer 3

supersize your meal, and you can run 4 wash loads!!