pond electrics....?

[dysons12]

Hi guys
i had an idea of using a solar panel to charge 2 12v batteries at 7(amph) small i know....that would power an outdoor pond. Which i have started to build but i wanted a more powerful pump so i bought a 12v to 240v inverter which can run upto 400w? Now the pump i have is 240v and 230w 50hz when i connect to battery it just buzz's but doesent power at all?

Is this because the battery is not good enough or what???

And secondly....

If i wanted to use 2 batteries is there a product or something i can make so that in daylight hours it runs of 1 battery whilst the other is being charged by the solar panel whilst the other is used to power the pump and vice versa when that runs dead...


really bugging me this is.....

ideas/knowledge and or experience would be gratefully appreciated


thankyou,

Michael

 

[tazz]

could be you trying to pull 19amp out of a 12v 7a/h battery, you are going to need to know some basic electrical knowledge before jumping into the water..(sorry for the pun)...

 

[telectrix]

at 230watts, you'll need a decent 100AH leisure battery, and that would only last about 4 hours before it was flat. the obvious answer is to get a 240V supply down to the pond and fit a IP 55 outdoor socket.

 

[dysons12]

I have a few pumps which i have tried. A 240v 22w which runs no problem but like i say not suitable due to lack of power. Didnt want to have to pay for the electric use. Which is why i planned on using solar with a device that alternates between batteries if there is such a thing? Lol

 

[tazz]

To be honest...you are going to need a few 200w solar panels, which will take up most of a 50ft garden, or your roof... build a outhouse to hold abaut 15 car batteries...and possible still run out of power around 4pm in the afternoon

 

[Engineer54]

Save yourself an awful lot of money, time, space and trouble, and go for mains power, it'll actually work out cheaper, than going down the route of trying to utilise PV power.


If you don't believe what you're being told, ask a PV installer in to give you a price/quote for a system that will work and fulfill your needs. I think you'll be forgetting all about PV powered fish ponds after he's left!! lol!!

 

[GLENNSPARK]

Save yourself an awful lot of money, time, space and trouble, and go for mains power, it'll actually work out cheaper, than going down the route of trying to utilise PV power.


If you don't believe what you're being told, ask a PV installer in to give you a price/quote for a system that will work and fulfill your needs. I think you'll be forgetting all about PV powered fish ponds after he's left!! lol!!

yeah but it`l be one of them new trendy leftie types....who go round wearing sandals and eat mung beans for tea.

he will have heard about how `green` he can be....whilst reminding everyone how trendy he is by inviting all the neighbours to the `party` to show off the new PV pond that he has..and they dont....



what a plastic world....

 

[efficiencyman]

I have to agree with engineer 54 although the cost of an MCS registered company may be above your budget. The advantages in every way from your 25 year government guarrantee will provide many pounds x times thousands on your investment (many times the bank rate). A 4kw grid connected system would be more beneficial than a battery set up due to battery costs & replacement life. The size, space and maintenance of batteries required also is a factor compared to an SWA circuit to your pond from the grid at night will be cheaper. The savings will purchase more efficient pumps in a little time, what are you needing to run ? How many litres/hour do want to move & to what height ? I run 5 pumps plus air lift pumps for my ponds & filters (230w pumps of an older design will not be efficient) I have retired all mine, I now move far more water for a fraction of the power. The payback on efficient pumps compared to big inverta loads from lots of batteries is a no brainer, believe me I have been there ! It`s not cost effective or efficient.
Conclusion;-
Yes, solar panels are great with the FITS payments for that you need it MCS installed.

 

[MDJ]

Well I have seen some daft questions on here of late, but this takes the gold medal, I laughed so hard when I read this I nearly fell off my chair, hysterical.

 

[dysons12]

I have to agree with engineer 54 although the cost of an MCS registered company may be above your budget. The advantages in every way from your 25 year government guarrantee will provide many pounds x times thousands on your investment (many times the bank rate). A 4kw grid connected system would be more beneficial than a battery set up due to battery costs & replacement life. The size, space and maintenance of batteries required also is a factor compared to an SWA circuit to your pond from the grid at night will be cheaper. The savings will purchase more efficient pumps in a little time, what are you needing to run ? How many litres/hour do want to move & to what height ? I run 5 pumps plus air lift pumps for my ponds & filters (230w pumps of an older design will not be efficient) I have retired all mine, I now move far more water for a fraction of the power. The payback on efficient pumps compared to big inverta loads from lots of batteries is a no brainer, believe me I have been there ! It`s not cost effective or efficient.
Conclusion;-
Yes, solar panels are great with the FITS payments for that you need it MCS installed.

I was given this pump in question by my father in law it is a bit big really for what it needs it probably cost 150-200 new? It claims to pump 8500lph but i only probably need 2000/3000lph it was just an idea i had. I got the pump for free so maybe i could buy a more suitable pump? Just liked the idea. I have a few electricians at work that could wire it all to mains but wanted to ask if its possible in anyway

 

[dysons12]

Well I have seen some daft questions on here of late, but this takes the gold medal, I laughed so hard when I read this I nearly fell off my chair, hysterical.

Mdj - how much ventilation do you need for a combustion vent for a gas fire that has an output of over 7kw?

You dont know? Somethings..... you just dont know

 

[dan86]

now now dysons. don't throw your toys out the pram!

 

[MDJ]

Mdj - how much ventilation do you need for a combustion vent for a gas fire that has an output of over 7kw?

You dont know? Somethings..... you just dont know

I would say a permanently open vent for a gas fire that size

 

[dysons12]

Poor answer....

 

[efficiencyman]

I was given this pump in question by my father in law it is a bit big really for what it needs it probably cost 150-200 new? It claims to pump 8500lph but i only probably need 2000/3000lph it was just an idea i had. I got the pump for free so maybe i could buy a more suitable pump? Just liked the idea. I have a few electricians at work that could wire it all to mains but wanted to ask if its possible in anyway

The reason I purchased a 600w inverta was to power essential items in the event of power outages, like GCH, or my Koi Pond filters etc. I liked the idea, but alas the wake up call of flat batteries in minutes, inefficient pumps & anything mechanical or electric has losses, inverta`s included. That`s how I came to a handle of efficiencyman. If you wish to move water more efficiently take a look on youtube for "AIR LIFTS" they can move far more water than an impelor pump (watts per gallon lifted ) less losses (air is lighter than water) works with nature (rise of air) friction is minimised well worth using on a pond as it also oxygenates the water. Could easily move 3000Lph for less than 20 watts, you could not do that with a centrifugal impelor pump.