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heated pool conversion !!

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snakes



Joined: 28/10/2008
Posts: 1512

Message Posted:
11/11/2008 21:07

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Message 1 of 18 in Discussion

anyone out there had their pool heated for the few months we may need it ! any polite suggestions !! costs recommendations etc ?



pilgrim



Joined: 11/05/2007
Posts: 1404

Message Posted:
11/11/2008 22:38

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Message 2 of 18 in Discussion

Cyprus heated pumps , heatpump works well. swim all year round.



truffles808


Joined: 16/10/2007
Posts: 183

Message Posted:
11/11/2008 22:47

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Message 3 of 18 in Discussion

how much does it take to run? how does it work - do you need diesel to run the heated system? just curious. thank you.



Groucho



Joined: 26/04/2008
Posts: 7993

Message Posted:
11/11/2008 22:49

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Message 4 of 18 in Discussion

electric... but very efficient



truffles808


Joined: 16/10/2007
Posts: 183

Message Posted:
11/11/2008 23:20

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Message 5 of 18 in Discussion

errrmmmmm, we have one pool on TBV which is suppose to be heated but it is not. One of the reasons is that it is very expensive to run? Apparently there is 400 liters of diesel which has been bought, but it still has not been heated?



pilgrim



Joined: 11/05/2007
Posts: 1404

Message Posted:
12/11/2008 00:20

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Message 6 of 18 in Discussion

Heatpumps convert I unit of energy into upto 8units, they extract heat from the air and transfer the heat to the pool water. 50 pounds a week in cool times , but worth it.



brian24001


Joined: 23/03/2008
Posts: 606

Message Posted:
12/11/2008 08:41

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Message 7 of 18 in Discussion

snakes,

I can show you a way to heat a pool virtually for free if you are a little DIY minded, whole process still in development stage, but it's something I knocked up for our pool, and am now refining. Using same system for hot tub.

In the summer months, the water from the system was 'bath water' hot, and all for the sum of about 100 quid.

I think upgrading to the more efficient refined system will cost about another 300 quid.

But, it's all a little pointless in the winter without a cover as the heat will go as quick as you can add it.

I'll be home on the 27th, if you want to take a look, and be in on the latest plans, and maybe contribute some further development ideas.

drop me an email (it's in member info) and we can swap numbers.

Cheers

Brian



Groucho



Joined: 26/04/2008
Posts: 7993

Message Posted:
12/11/2008 09:54

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Message 8 of 18 in Discussion

Pilgrim....



Are you sure 50 a week sounds very high... I would have thought 50 a month additional electricity was closer to the mark...



I would not pay over 200 a month for a warm pool...



TRNCVaughan


Joined: 27/04/2008
Posts: 4578

Message Posted:
12/11/2008 10:23

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Message 9 of 18 in Discussion

It depends on how long you want to swim for. If you just want to extend your swimming season by a month either side of summer, i.e. spring and autumn, you might want to consider just using straight immersion heating. This is cheap to buy/install (about 1000 pounds) but expensive to run. Heat pumps are expensive to buy/install (about 3500 pounds) but cheaper to run.

However, the difference in capital cost - 2500 pounds - buys an awful lot of electricity, considering that you will only use it for 2 months in 12. Swimming in winter, even in a warm pool, is not always pleasurable as the weather is too grotty.

However, for real swimming buffs, why don't you just buy yourself a wet-suit and jump in all through the winter?



pilgrim



Joined: 11/05/2007
Posts: 1404

Message Posted:
12/11/2008 10:54

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Message 10 of 18 in Discussion

Doubles my weekly bill in October,November, December March & April therefore I calculate 40-50 per week depending on amount of sunshine.



snakes



Joined: 28/10/2008
Posts: 1512

Message Posted:
13/11/2008 11:38

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Message 11 of 18 in Discussion

thanks pilgrim ! any suggested suppliers ! sounds the best at mo ! thanks to brian 24001 i will contact you nearer our expected arrival date

cheers all



kibsolar


Joined: 14/09/2008
Posts: 552

Message Posted:
13/11/2008 13:05

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Message 12 of 18 in Discussion

hi pilgrim and snakes,



before i start some smart calculations....

can you tell me how big your pool is (lenght, width, depth) and whether it is a step pool or not, an overflow or skimmer pool?

please also tell me on which temperature you are running (or would like to run) your pool.



snakes



Joined: 28/10/2008
Posts: 1512

Message Posted:
13/11/2008 16:06

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Message 13 of 18 in Discussion

hello ! Not there yet but from memory it is 10 x 5 overflow and an average depth of 1.5 metres ! not sure of temperature but like it quite warm

thanks again

regards Barry



markvpiazza


Joined: 14/08/2008
Posts: 530

Message Posted:
13/11/2008 17:46

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Message 14 of 18 in Discussion

Heating a pool will cost a small fortune, or a large fortune, depending how you do it.



Get a solar cover for 100 and extend your swimming season by 3-4 months a year - we still had 26c in October with ours.



Mark



pilgrim



Joined: 11/05/2007
Posts: 1404

Message Posted:
13/11/2008 23:29

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Message 15 of 18 in Discussion

John at Cyprus heat pumps did mine , good job and good aftercare.



kibsolar


Joined: 14/09/2008
Posts: 552

Message Posted:
14/11/2008 14:06

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Message 16 of 18 in Discussion

first: pools are at the moment at around 19-20 degree because they did not lost all the heat from the summer.

10x5x1,5 are 75 tons plus 10 for overflow is 85. to heat this pool from 19 to 24 you need to calculate: 5 (dgree) x 85 tons = 425000 kcal=490 kw/h.





2nd point is, that you have to equalise the heat losses of the pool to keep a stable temperature, whatever degree you want.



the pools surface to air and ground is around 160 m.

to cover the heat losses you have to push into your pool for each degree you would like to have it "warmer then ambient temperature"

around 8000W/h every day plus losses from wind and circulation..., lets say 10000W/h=10 kw/h



in fe late Nov, beginning december, we have an average temp of 14 degrees, your pool should be 24?

so, 10 (kw/H) x 10 (degree) you need to push in 100kw/h a day

a pool cover can collect around 100 kw/h/day in november, but works on a max efficiency of 30% = 30kW/h per day...for only 100 stg a bargain.



kibsolar


Joined: 14/09/2008
Posts: 552

Message Posted:
14/11/2008 14:07

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Message 17 of 18 in Discussion



thats why it is said that "my pool is 5 degree above normal in october", because ambient temp in oct is 20 degree and sunshine is 30% more then in nov/dec.

that equals all heat losses and the pool remains on 26 degrees as it was in the summer. till october.



but its november, and now you have to collect the other 70kw/h per day, fe with a heat pump.



a heat pump runs on COP 3,0 - 7,0, i never read of 8 pilgrim, so quality makes a difference.

as quality sells difficult in cyprus i would say...3.0, maybe 4!

so, 70kw/h energy needs divided by COP 3 is 23 kw/h taken from the grid every day.(if we do have a grid)

makes at least 700 kw/h a month which brings us into the high rates of at

least 0,50 ytl= minimum 350 ytl= 150-200 stg, 4 month a year= 800 STG, going up next year?



kibsolar


Joined: 14/09/2008
Posts: 552

Message Posted:
14/11/2008 14:07

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Message 18 of 18 in Discussion

to try to heat your pool from december to middle march in average temps of 10 to 12 degrees, a lot of wind and rain, doubles or triples that amount.

result: a pool cover is a must, everything else a luxury.



if you think about solar: combine your heating system with a good solar system and connect it also to the pool.

20m can collect 60kw/h a day in november and works on 75% (60% for central heating) for pool heating= 45kw/h day. that will do till mid Nov and from late march.

from dec till march you will use it for the central heating and of course for all your domestic hot water needs.

PS:

With 400 liters of diesel = (approx) 4000 kw/h,efficiency of 70%, you can heat up your pool (must: a good heat exchanger)

and keep your pool 3-4 weeks on 24 degrees.



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