Results 61 to 80 of 85
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22-09-2020, 05:59 PM #61
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22-09-2020, 06:59 PM #62
Polycarbonate Covers....too soon?
Looks great. You planning on boxing in that shower, as that will really chill the water
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22-09-2020, 07:40 PM #63
I thought the same- but also because where the sheet water comes in there is a big gap in the cover. Which actually makes the cover almost pointless - think of heating your house and then leaving your bifold doors open!
you need to get that covered up ASAP. I’ve actually got tank connectors on my shower because I wanted to run twin 2” pipes back to the pond below the surface so I could insulate properly and keep it running throughout the winter.
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22-09-2020, 07:43 PM #64
nope its been fine, its quite sheltered where the pond is so no real wind chill and gets sun all day, i kept 20000 lph going over it last winter the lowest i went was 9.8 for 1 night, think as much a shower may chill the water it can also warm it, same reason why i didnt insulate the pond, the heat during the day will go through the blocks and for a while store the heat
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22-09-2020, 07:55 PM #65
i dont heat my outside pond mate i think its a good thing giving the bigger ones a winter season. Of course theres a gap where the water goes in! Have you ever smelled the ammonia from an enclosed shower, they need air exchange, stuff needs to be gassed off, theres no way id have my pond or shower sealed up
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22-09-2020, 08:05 PM #66
I not wishing to come across as rude but that just isn’t the case. I started my career as a structural engineer and thermal mass doesn’t work like that - it needs an insulator on the uncontrolled heat side (ie the ground side of the pond) to maintain a steady and constant thermal temperature (this can be hot or cold) I applied this rule to my house - which is a ample sized 5bed and in the winter months stays between 19-21C. Heating only comes on for about an hour a day and costs an absolute max of £50 in the coldest months on gas. Think about underfloor heating as an example - you put lots and lots of insulation below it, put the UFH pipes down and then screed over the top. This screed then hold the heat and slowly releases it into the house throughout the day and night.
You won’t get any heat gain from the shower - it will constantly chill the water. See if you can get hold of a thermal detector and look at your pond and filtration through it. You will be shocked!
edited to add :- you would also benefit from renewing the foil tape as it looks worm and green in the chambers - if you don’t keep the cellular structure closed then it looses its thermal properties as effectively they are exposed to the cold (the lowest ends can be of perforated tape to allow tiny air exchange to reduce condensation.Last edited by DiabloDave; 22-09-2020 at 08:46 PM.
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22-09-2020, 09:18 PM #67
OK so you are saying heat isnt transferred through concrete blocks? because it most defiantly is. i have checked all these things with an ir thermometer, including the shower, im not just making things up cos im bored did the tape the other day thanks for your advice tho.
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22-09-2020, 09:40 PM #68
Please re-read what I have said. It will of course bleed thermal heat - both hot and cold BUT you need insulation to stop it going the wrong way! The ground holds temperature deep down for a long time but not at shallow depth. I noticed your pond is raised so the bottom of your pond is actually relatively rather shallow in the soil thus you get the worst of the gain and loss I’m afraid.
And I’m sorry but unless your shower is physics defying then it will rarely be gaining heat - especially in a light box like you have that reflects heat - if it were black then it would gain in the sunshine if out the way of a breeze.
I can only lead a horse to water....I can’t make him drink.Last edited by DiabloDave; 22-09-2020 at 09:46 PM.
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23-09-2020, 07:23 AM #69
That's not how insulation works though is it, if I had insulated the inside of this pond before fiberglass there would have been no heat transfer through the walls from the outside, it would have stopped the temp of the water being sucked out through the block, yes the shower is a light colour, this still will transfer heat and inside the trays are warmer than the outside temperature, you realise I'm not new to the hobby and this is not my 1st pond don't you? I built my 1st pond well over 20 years ago, I kinda know why and how things work with heat and light being a laser technician. You seem to know alot more about the depths and how the pond works more than me so this is the last I'll post on the matter as this thread has been hijacked apologies to the OP
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23-09-2020, 09:46 AM #70
Hi,
You should use polycarbonate breather tape not foil. Then there will be no condensation with the tape. The foil seals the unit too much.
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https://www.amazon.co.uk/dp/B00SNH6T..._8SWAFbE19B0DN
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23-09-2020, 10:53 AM #71
I would normally do this but I’m experimenting this time around. Basically I’m drying out the panels in a room that is 25C, I have two fans at the ends that is pushing the warm air through. Today the wood burner is going on that room with the intention being to bring the room to 29C and maintain 24hrs with the fans still blowing the warm dry air through. Then I’m going to tape up with foil and slowly let the temperature drop down to high teens. I will then tape over again - working on the basis that as the air cools there may be some tenting of the foil.
The reason for the above is because for breather tape to work well it has to be at the bottom of the sloping panel otherwise it can get moisture in if below a certain angle and you get fogging (think driving rain). Mine sit flat so fogged up more than I wanted.
If it doesn’t work I’ll try again
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23-09-2020, 10:57 AM #722700 G Above ground, Nexus 220, EA 24 bead, 1m 2 tier custom Evolve shower 9kW Thermotech ASHP
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23-09-2020, 12:07 PM #732700 G Above ground, Nexus 220, EA 24 bead, 1m 2 tier custom Evolve shower 9kW Thermotech ASHP
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freddyboy Thanked / Liked this Post
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23-09-2020, 02:45 PM #74
I have taken that into consideration - it’s in a part
of the house that is furthest from shower rooms / bathrooms/ kitchen and utility room so that the warmth from the fire and heating being on has really dried the air in that room - to a point of being in there is uncomfortable on the eyes as they dry out so quickly!
If it doesn’t work I’ll have another go and see what happens.
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23-09-2020, 08:31 PM #75
If you created a vacumn within the panel would that stop condensation ?
I dont know how to but a thought as I read through the threads1000 gal
2 x Hozelock 6000ltr 9W UV
Allpond Spin Filter 8000 11W UV
Blagdon pond oxy 640 ltr/hr
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24-09-2020, 08:55 AM #76
You would stop condensation if you could maintain the seal but you couldn't achieve a real vacuum outside a factory lab ! Also i don't think the polycarbonate cells would not hold their shape. Could implode and make a giant light bulb "pop" as they do so.
The vacuum will stop much heat transfer but things like glazing units have gases like Argon in them to fill the gap and further reduce heat transmission along with thermoreflective coatings on 5he glass.
When it comes to the gear that we use for outdoor covers you'll never achieve what we'd like.
You'll loose heat through every uninsulated surface from conduction convection with air movement and just pure infrared like the heat you feel on your face from a fire.. A decent draft proof polycarbonate cover will probably do as much as we can achieve for outdoor ponds. Lagging pipes and filters will all help but its all small additions, but remember every bit helps..
Seal the polycarbonate but make sure it, the cells can breathe in all weather or you will get condensation and then some nice green algae inside also with your condensation.
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28-09-2020, 02:15 PM #77Freddyboy the legend
"we are water keepers first"
Johnathan
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28-09-2020, 02:39 PM #782016 new 6000 gallon pond
https://www.koiforum.uk/pond-construc...ghlight=feline
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28-09-2020, 02:43 PM #79Freddyboy the legend
"we are water keepers first"
Johnathan
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28-09-2020, 05:01 PM #80
Hi guys , done half the pond covers today , the rest is under a roof that has sides to go on soon . its hard keeping the pond at 23c the heaters are working hard at it now . Looks like it will need to drop the temp down early this year or pay the price with the wife over the gas bills
Aquaforte Dm vario 20000 pumps
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