How much does it cost

Can anyone give us a rough idea of how much it costs to boil a full 1.7 litre 3kw kettle please ????

 

i dont know but i found this to help you work it out

more info is needed for a accurate answer, such as the initial temperature of the water and the k/watt power of the kettle, however as an example
water at 15C raised to 100C = 85C
specific heat capacity of water 4200
weight of 1litre of water 1kg
kettle element 3kw (3000w)
price if electric 15p per unit

85C x 2400 x 1/3000w = 119sec 1 minute 59 seconds
cost 1.4875p

if kettle element is 2.4kw then time is 148.75 sec or 2 min 28 and 3/4 sec
cost 1.4875p

 

or this way


Cost of 1 KWh = 20p (just an example, check your electricity bill if you want to be more precise)

Power of kettle = 2200 W = 2.2 KW (another example, check your kettle's label). This means that if the kettle ran for one full hour it would use 2.2 KWh, so:
20p*2.2=44p cost for one hour

One hour contains 3600 seconds so:
44p/3600=0.012p cost per second

Kettle takes 1 minute and 30 seconds = 90 seconds to boil (again just an example, take a watch and measure it)
0.012p*80=1.08p to boil a kettle

Substitute the correct values where needed and you'll get your answer.

when u work it out let me know

 

I remember reading somewhere that it costs "... on average", 2.9p. to boil a full kettle of water, from cold.

 

Thank you both

I didn't look at it much, so only saving a few penny's
I only boiled the kettle once a day any way, now i don't boil it at all
not much help in saving the planet

 

I remember seeing a wartime poster that said how much energy is wasted by boiling more water than you need in a kettle. Can't find it online, think its in the museum at Lyme Regis, so Scrungee's probably got a picture of it

Did find this though,

http://pinterest.com/cooksinfo/wartime-food/

 

Nice one Zigs
Liked the one food is a weapon

 

Veronica's Victory Vegetables amused me, but I don't get why she appears to be wearing her sunday best plus a cycle helmet while doing the garden.

 

I wonder how environmental friendly they are, those water taps that automatically produce hot water.

 

At least you'd only be heating the water you needed Java.

Jiffy, food is a weapon. We might have had it tough during the war, but by the end of it the Germans were making bread out of sawdust & silage.

 

Silage is to acidic for me

 

Pah! How times have changed ....



... DEFRA would have something to say about this today

 

all stoped because some people bent the rules

 

Can't imagine thinking about how much it costs to boil water, is it that bad in places??
Well, if you boil water, the heat from the flames can help heat your kitchen, the steam from the water can help humidify the room; all said a triple outcome.