Eberspacher no more. Arise the Winterspacher!

[robmcg]

Blimey, he gets everywhere!

http://www.dailymail.co.uk/sciencet...-TEALIGHTS-FLOWERPOTS--costs-just-8p-day.html

 

[ghostlymoron]

This has been discussed at length on this forum. Unless you can re-write the laws of physics you can't magnify the heat from a candle regardless of what container you put it in. It will give out heat but not enough to heat a room but it may make a difference in a small boat.

 

[pvb]

This has been discussed at length on this forum. Unless you can re-write the laws of physics you can't magnify the heat from a candle regardless of what container you put it in. It will give out heat but not enough to heat a room but it may make a difference in a small boat.

So true! Tealights produce around 25W when burning, so 4 of them would produce 100W. Anyone who thinks this is enough to make any significant difference, even in a small boat, is rather optimistic.

 

[Sandyman]

So true! Tealights produce around 25W when burning, so 4 of them would produce 100W. Anyone who thinks this is enough to make any significant difference, even in a small boat, is rather optimistic.

or bl00dy cold

 

[JumbleDuck]

So true! Tealights produce around 25W when burning, so 4 of them would produce 100W. Anyone who thinks this is enough to make any significant difference, even in a small boat, is rather optimistic.

I think what he's doing is to turn a small convective stream of very hot air into a much larger stream of warm air. The small stream will rise much more quickly before losing its heat to the ceiling while the large stream will have more time to warm the stuff around it. It's a bit like the way underfloor heating manages to warm a room.

 

[pvb]

I think what he's doing is to turn a small convective stream of very hot air into a much larger stream of warm air. The small stream will rise much more quickly before losing its heat to the ceiling while the large stream will have more time to warm the stuff around it. It's a bit like the way underfloor heating manages to warm a room.

Err... no, it's still only 100W.

 

[dylanwinter]

I made the film last year during a marathon editing session

it ticked along at a few views a day - then over the weekend it got to 20,000 views

by yesterday it was at 60,000

since then it has put on over a quarter of a million views

it is on the science pages of the daily mail and therefore must be true

feel free to knock it without trying it

my house is bloody cold during the winter - not worth putting the heating on for just one room

when the 0ld CRTs were replaced with flat screen monitors it suddenly got cold

pretty funny that it got picked up by the Mail

makes me laugh

incidentally - if I was earning money from the film I would have got $350

as it is that money goes straight into the google coffers - they need it poor lambs

D

 

[JumbleDuck]

Err... no, it's still only 100W.

It's still only 100W, but it's 100W more effectively used. See also: large amounts of water moving slowly (British Seagull) vs small amounts of water moving fast (modern outboard). It's yer actually entropy, probably,

 

[Billjratt]

100w is 100w. Our aft cabin has two 60watt tube heaters which are fine for getting it cosy by bed time.

 

[David2452]

To paraphrase Crocodile Dundee, 100w? that's not a boat heater, the 30,000w one I'm installing Mon / Tues, now that's a boat heater.

 

[chrisbitz]

Err... no, it's still only 100W.

I don't see how that's relevant. Its all about efficiency. An electric blanket is 30w, and perfectly toasty. try touching a 100w light bulb - plenty warm enough!

100w in a small column going to the ceiling will certainly have less effect than 100w radiated over a large area.

 

[ghostlymoron]

Sounds like a suitable topic for PBO test team. How about it, Ben?

 

[rob2]

This is Victorian technology and part of folklore by now. I think the main thing is that the flowerpot heats up, absorbing energy that would otherwise be rapidly dissipated by pure convection. It then radiates the heat - but the rate at which it can radiate is supposed to be less than the input rate, so the nominal 100W input is maintaining the heat. This is where the system is efficient and is the same principle used in night storage heaters. I've never tried it myself - when the heating fails, I go to the pub.

Rob.

 

[geem]

I don't see how that's relevant. Its all about efficiency. An electric blanket is 30w, and perfectly toasty. try touching a 100w light bulb - plenty warm enough!

100w in a small column going to the ceiling will certainly have less effect than 100w radiated over a large area.

What I load of rubbish! If your outside temperature is 0 dwgC and you would like it to be 18 deg Cinside your boat yrou can easily calculate the kw required it heat the space. I absolutely guarantee that 100 w will not heat the space! It may be sufficient to heat a hand warmer that keep your hand warm but it won't heat your boat

 

[dylanwinter]

that is amazing

I am very used to being wrong - and I am sure that I am wrong on this occasion

I have used it lots of times over the years and I have mistakenly thought that it kept me, my room and my boat warm

there was me thinking I was warm when it was scientifically impossible

I should never have taken my fleece off when it was a placebo effect all along

well shiver my timbers

and thank goodness there are people able to prove that it does not work without even trying it

now that I know that it will never work I shall stop doing it straight away

I have two old flower pots and a quantity of tealights for sale

yet another idea bites the dust

I shall put it in the bin marked rubbish along with the outboard wells, 12 volt to 110 volt camera battery chargers, boiling tin cans, LED nav lights and several other ideas thatI have been using but which will never work

ah well - back to the drawing board

D

still looking for a knacked Centaur... dylan.winter@virgin.net

 

[causeway]

Dylan, I don't know if you know but you were on the front page of reddit a couple of days ago with that video.

That will account for a lot of your views no doubt.

 

[dylanwinter]

overlap

Dylan, I don't know if you know but you were on the front page of reddit a couple of days ago with that video.

That will account for a lot of your views no doubt.

very little overlap to sailing films

the film is about candles and cheap heat

daily mail picked it from Reddit I presume

so google just serves follow up films about candles and and heat

not boats and sailing

so despite that film getting 486,000 hits very few of those dribbled across to ktl

after all they are films about an ugly old bloke sailing a boat around a small island

not an ugly old bloke telling you how to heat a cold office

still a bit of a laff though

D

 

[alahol2]

there was me thinking I was warm when it was scientifically impossible

I should never have taken my fleece off when it was a placebo effect all along

well shiver my timbers

I understand people dying from hypothermia believe themselves to be getting warm and start undressing.

 

[David2452]

The average human body produces 110w sedentary, start moving about and it increases quite heavily, so just by being there you are heating (if that is the right word) the space more, invite a pal over for a beer, or more likely if you are using tea lights a hot drink, it would produce more heat.

 

[causeway]

very little overlap to sailing films

the film is about candles and cheap heat

daily mail picked it from Reddit I presume

so google just serves follow up films about candles and and heat

not boats and sailing

so despite that film getting 486,000 hits very few of those dribbled across to ktl

after all they are films about an ugly old bloke sailing a boat around a small island

not an ugly old bloke telling you how to heat a cold office

still a bit of a laff though

D

That's very interesting to hear, I would have thought there would have been more 'bleed over' onto ktl.

It's all good publicity though!