SteamyTea

Until the killer whales get them. https://www.newscientist.com/article/2378796-why-have-orcas-been-damaging-and-sinking-so-many-boats/

Properly layed up GRP can handle standing water for a very long time. If you think about what those sewage tanks put up with, wee and poo one side, ground water the other. They survive. So reducing the fall a bit should not be a problem. Use ply against the GRP as it is easier to lay up onto. Takes less resin as well.

@ghostmomo Welcome. I have posted a reply onto your other post.

Quite often you get 2 heating elements on an E7 hot water cylinder. One at the bottom that is turned on and off by the separate E7 circuit, and one 2/3rd or so up the cylinder that is controlled independently. It is that upper element that the timer is probably on and if set outside the E7 window i.e. midnight to 7AM, is using the day rate electricity (mine is now over 3 times the cost of the night rate). My cylinder is 200lt and can easily give a couple of baths worth of hot water. Can you take a picture of the cylinder and where any wires are attached and where they lead to.

Don't it get dark early up your way. This was taken just now, at 5:30 on a stormy evening.

So how long does each module take to assemble in the factory? I like the idea, but then we would have onsite builders, on a time incentive to build them on site. Ronan Point failed after the gas explosion because the British builders did not put all the bolts in to save time. (expletive deleted) Talking of which, that stencil video is a great idea. https://www.facebook.com/watch?v=384284583857110

My mother's old house was local brick, was built in 1974. Brick company closed down in 1981. The owner retired.

Maybe not. Do any trees need felling.

Farmers usually like to shoot or poison things. Obviously shooting would not work.

Do you think, if time and price were no object, you could have improved it much. That is without getting silly and casting a block of concrete over it.

No idea of the price. https://mdfosb.com/en/products/smartply-propassiv

Inductance/capacitance between wires is quite common. You can think of it as an inefficient transformer. Uncoil the wires from the iron core, lay the side by side, pop some AC power through one and you will get some power in the other wire. It is how Marconi got radio signals across the Atlantic. It is a useful feature of oscillating circuits. A double pole switch will sort it out.

Right, yes, but it is predictable and manageable.

I think that is mixing up two separate things. The fraction of renewable generation increasing is to do with the ratio of traditional generation to RE.

Can you plot your yields are a frequency distribution? And my simple model just shows power, not energy, but may be that can be calculated from yields and hours of daylight/azimuth/altitude angles. I think that is what PVGIS does.

If we know where the house is, and what the module angles are, we can take a stab at seeing what PVGIS says it will yield.

Welcome. At least with a pub you normally get a decent sized parking area.

Sewage is already used to produce electricity. That would be the main competitor thermal energy, and as you rightly say, redistribution would be the biggest issue. Wires are cheap and easy, I wish the 'distributed urban heat network' advocates would realise this. Would save a lot of time and wasted resources.

In a simple case, half the time it is dark, so zero power happens 50% of the time. Dawn and Dust are low power, as are stormy days, so they account for the next 25%, then slightly brighter, accounting for 12.5%. The most powerful times i.e. greater than 600W, don't happen that often. Under 1% of the time (in this basic model), so about 87.5 hours a year. Plot that and you get a nice decaying line as the power increases. Remember that power is not energy. To get the energy, you need to multiple by the hours. As there is 8760 hours in a non leap year, you can (maybe with a bit of adjustment for local weather) work out the probable yield.

4.2 x (20.6 x 1,000,000,000) x 3 = 259,560,000,000 kJ (72,100,576.8 kWh or 72 GWh) National Grid is currently reporting 35 GW of electricity is going though the grid. So two hours of electrical generation.

How would this app deal with the individual discounts at local BMs? Have you thought of 'doing an app' that can control heating, ventilation and lighting systems that is cloud free and will not be withdrawn from the market?

There is an old storyline in the Archers about5 Brian Aldridge, as a young man, allowing some containers to be buried on his land. 30 years later, they leak and contaminate the River Am. He had to sell the family home and some of his land to pay for it all. Farmers eh, custodians of the landscape, making the countryside better for future generations. If you are certain that you are not liable, in any way, for this, wait till his cheque has cleared and report the wanker.

Interesting idea, but not new. Let us say that a house discharges 500 litres of water at a mean temperature of 20°C every day. Cooling that water to 17° with a heat pump will yield: 4.2 [kJ/kg.K] x 500 [kg] x 3 [K] = 6,300 kJ or 1.75 kWh Enough for a shower.

Irradiance follows a decaying logarithmic rule (generally).

Well yes, that would be silly, unless you are a landlord. Works well for me, and so far it has been maintenance free. No difference in the 'feel' of the heat when I have it on. When the price war was on between the power companies, there was little in it. But we found out what was happening and E7 is not a bad option for people off the gas grid, especially in smaller houses. Down here there are thousands of places without natural gas (I am one), we also have a weak local electrical distribution in some areas, so has been a nicer engineering fit than the old, non inverter heat pumps.