Cost of running a tumble drier help please

incus432

Hello Martyn_H. If 3kW kettle used for an hour it will use 3kWh of energy. Just multiply the wattage by the time.

As an aside, if we were sticking with SI units we'd measure energy and usage in joules (1 watt= 1 joule /sec, so a joule is a watt-second, and 1kWh=3600 J ) . Not quite so simple in everyday use as kWh though

Martyn_H

@ last two posters: I agree with you both. Thank you very much for your patience!

Cardew

incus432 wrote: »

As an aside, if we were sticking with SI units we'd measure energy and usage in joules (1 watt= 1 joule /sec, so a joule is a watt-second, and 1kWh=3600 J ) . Not quite so simple in everyday use as kWh though

Not so!

If we were "sticking with SI units" we would use Watt!

The Watt is an SI unit!

Origin and adoption as an SI unit

The watt is named after James Watt for his contributions to the development of the steam engine, and was adopted by the Second Congress of the British Association for the Advancement of Science in 1889 and by the 11th General Conference on Weights and Measures in 1960 as the unit of power incorporated in the International System of Units (SI).


The watt (symbol: W) is a derived unit of power in the International System of Units (SI). It measures rate of energy conversion. One watt is equivalent to 1 joule (J) of energy per second.
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Magentasue

We are a family of six with gadget fiends and someone home all day. We use about 5000kwh elec a year. A couple of years ago, it was more like 7000-8000kwh and we were forced to make savings. Most of the savings were achieved by cutting waste but I did stop my daily tumble drying in the winter.

I calculated (using a plug in monitor) that drying a load for an hour or hour and a half (depending on what I was drying) used between 1.75kwh and 2.6kwh. At the time, I was paying about 12p per kwh. Now it's about 10p so around 20p a load. Living on the wet side of the UK at the time, I reckon tumble drying accounted for at least 500kwh a year

Now, I hang clothes over an airer and next day, iron and finish airing on a radiator (to make sure dry from steam ironing before putting away) or, in the case of socks etc, I blast a full load in the tumble drier for 20 mins. My tumble drying costs dropped from a couple of quid a week to less than 10p. Now that we're better off, I could afford to use the tumble drier but have got used to using the airer instead.

Martyn_H

Thanks for the info, Magentasue.

spinningsheep

i have an Indesit IS70C condensor dryer does anyone know for sure what its rating is? I have read its about 4kw but I cannot see the label on the back due the position of the appliance in my kitchen, I am trying to work out roughly how much per hour it costs to run. I am on BG websaver 3 plan.

Martyn_H

Try this link (thanks to original poster):

http://www.sust-it.net/energy_saving.php?id=41&start=120&title=Indesit%20IS70C#IS70C