SteamyTea

Or Precision and Accuracy. https://www.engineeringenotes.com/surveying/theodolite-surveying/adjustment-of-a-closed-traverse-theodolite-surveying-surveying/14172 Just turn it on its side.

It was an 80's beat combo headed by Robert Smith.

I think I get an hour thrown in before midnight. I am usually asleep by then. It was that hour I initially locked out with secondary timers as it seemed pointless. I only use 4 hours of the E7 window at most and I think I can get away with using just 3 of them.

The E7 timings are programmed into my meter. The only reason I bothered to get the meter changed was because EDF said the old radio single one was going to be turned off in a few weeks time (was back in May).

It will. The sad thing is it an easy, but messy, fix. I suspect that they did not put enough resin into the first layer of mat. I hope they put a second one on, but may have not. Water will get in, will be absorbed by the unsaturated mat, freezing will happen, then it is just a matter of time before it fails.

Should be fine.

How long it the cable run and is it going though insulation? What are the chances that the connector you are fitting may get changed to a double socket in the future? I think you are allowed a 5% volt drop. https://www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html

As strange as it seems, they could impact performance more than you think. The total module current is reduced to the current of the lowest performing cell. This is why bypass diodes are fitted. The voltage only drops slightly when a single cell is bypassed, but the current is the same. There are a few YouTube videos about it

Forget them, what you need is a gate turn-off thyristor. It even has gate in the name.

When was the chart first made? Town gas was phased out in the very early 1970s. And what is a Kw hours. K = Kelvin, the measure of temperature. w = nothing really, but is, when italicised, used, in formulas, for angular speed, in radians per second. You will need a torch as you need to know the external dimensions as well as the internal ones.

It is only addition and multiplication, which are the same thing. Start by measuring your house. That way you have the dimensions of everything.

Will these power lines cause shadows on the modules. If so, you may have to fit optimisers as the blocking diodes in the modules may not be up to the job.

Why do you think that. They work just like any other wet heating system. The first thing you should do is calculate your heat losses. This means finding out about your house construction i.e. walls, floor, doors and windows, roof, then assume you have ventilation losses of between 3 and 6 air changes an hour. Estimate your hit water usage as well Knowing all that will lead you into the size of system you are likely to need. Once you have that information, then it is worth talking to installers. And your free £7500 grant isn't really free. It is a subsidy to installers. So you are likely to still be paying something.

https://en.wikipedia.org/wiki/RC_time_constant Useful this time of year as people like flashing lights to guide Santa in.

The principle is quite simple. To get a fixed amount of air though a restriction, in a fixed time, you have to speed the air up. This reduces the pressure at the restriction. What you can do is add extra air at that point. That air gets sucked in and then dragged out. So more air movement for the same size fan/pump. It is what Dyson does quiet well, but he relies on the general public not realising that it was all formulised in 1738, by Daniel Bernoulli.

I siliconed in the new trim around my bath last night.

Just to add to the whole DIY theme, why not fit a venturi tunnel, small fan, large flow. Actually, why not make the heat exchanger a spiral venturi.

Same here, what I like about it.

Or Lizardite. Got loads down here, just lays around in the sun.

Been known about for a while. https://en.wikipedia.org/wiki/Electrocaloric_effect

When I type S(expletive deleted)horpe I get told off. So tell us all more, we like to know about U-Values, PV and windows.

Neoprene, as used in wetsuits, has a conductivity of 0.055 W/m.K. You can buy 10mm by 600mm by 300mm for 22 quis on eBay. Can't you wrap pipes in that. You can get it thinner if the pipe diameter is small.

It will bubble a lot, get hot, then not last very long. You can get cheap charge controllers. Just one example. https://www.sunstore.co.uk/product/ep-solar-landstar-10a-12v-solar-charge-controller/

It is like driving a car, we just get better and correcting out mistakes without a fuss.

SI units save confusion. Volume = m3 Time = s Mass = kg (the odd one out) Temperature = K Electrical current = A Amount of substance = mol Luminous intensity = cd You will notice that there are no units of volts or force, for instance. This is because they are derived units. A volt is kg⋅m2⋅s−3⋅A−1 and force is kg⋅m⋅s−2