Energy Efficiency Spin Driers and Cloths Washers

This is a short video showing the amount of water a spin drier can remove from washing before putting into the tumble drier.

The Spin drier uses 400 watts of electricity an is able to remove over a liter of water per load of washing.

So how much energy will a spin drier save?

'The more water water, the more energy it takes. The colder the water, the more energy it takes.

Let say the water is at room temperature, or 20 °C. First, the water must be heated to 100 °C, which takes energy. The amount of energy is given by the specific heat of water, which is 4.186 Joule/gram °C. That means that requires 4.186 Joules of energy to heat 1 gram of water by 1 °C. So if you have 100 grams of water at 20 °C, you have to add this much energy:

100 grams * (100 °C - 20 °C) * 4.186 J/g °C = 33488 J = 33.488 kJ

Of course, if you had more or less water, or it was colder or warmer, you would adjust this equation accordingly.

Once the water is at 100 °C, still more energy must be added. This is given by the heat of vaporization, which for water is 40.7 kJ / mol or 2261 Joules per gram. So, in the example, once the 100 grams of water
is at 100 °C, this amount of energy must be added to boil it:

100 g * 2261 Joules/gram = 226100 Joules = 226.1 kJ

Adding everything up we get:

33.5 kJ + 226.1 kJ = 259.6 kJ '

Say the spin drier removes 1 liter of water or 1kG this is equal to 2596kJ of energy.

There is 3.6MJ of energy per kWh this must have the energy use of the spin drier added to allow for a kWh comparison. 0.4kW x 600 seconds = 240kJ there for 3.6MJ + 240kJ = 3.84MJ so energy saved from 1 liter of water being boiled / (1kWh + spin drier energy consumption) = 2.596 / 3.84 = 67% of a kWh is saved per load of washing used with my spin drier.

In are house hold there is around 4 loads of washing a week put on which is tumble dried. 4 X 52 X 67% = 139kWh savings a year.

I purchased the spin drier for £15 from a local paper and pay £0.15 per kWh which is an annual saving £20.9 and pay back of just under 9 months.

Category:

Science & Technology

Tags:

• Spin
• drier
• Energy
• Efficiency
• Renewable
• Green
• Electricity
• Wind
• Turbine
• Solar
• PV
• otherpower
• UK

[WindyJAMiller]

The toiltet had cleaner in it btw, cheers

[keiko1957]

What company? How much?

[WindyJAMiller]

@keiko1957 German, £20 from the paper

[cardboardboxeater]

I've just bought a secondhand Creda for the same reason.......hopefully it'll save a lot of tumble-drying time.

[WindyJAMiller]

Thats good, they really do work well.

Thank you

[countkostaki]

You need to flush the toilet

[camboy1132]

does you Spin Dryer Stretch out your clothes longer.. my clothes are stretched did u figure out a cure

[lordadmira3]

try flushing the toilet before making ur next video.......

[gmmcnair]

Nice video. I live here in the USA, where top-loaders with slow spins are common. The savings are even more dramatic with that type of machine. I generally cut out nearly two hours of tumble drying time a week using the spin drier.

[illustratz]

@countkostaki (or at LEAST close the lid! :P )

[SuperSimsmovies]

@countkostaki i was thinking that lmao



[shuaib519]

@countkostaki That is so true eeww

[shmuli9]

From experience, one can also use a spin-dryer like this to spin water out of a salad... :-) (Yes, I really tried this twice.)

[aburns87]

@countkostaki he is trying to save water... :P