SteamyTea

You won't see that unit, think it means Kelvin times angular movement times capacitance. kWh is what you mean.

Racing ahead now. Should we put a tape measure on them.

You can run a SA exactly the same. Works best if it is just depleted before recharging, and that recharging is done at the phase change temperature. If you want more hit water, why not increase the 100lt cylinder temperature, or charge it up more often, or for longer. 2 kWh is not much heating.

Realistically only by building a new house inside the old one. Biggest problems, in old houses, are low insulation, thermal bridging and dreadful ventilation control. Apart from that, they are quite good.

From this week's comic. Trees beat energy crops as CO sink 12 May 2022 Nearly twice as much carbon could be removed from the atmosphere by using available land in the US to plant forests rather than grow fuel crops and capture the carbon dioxide emitted when those crops are burned, says a study. Trees can also help to avert water shortages (Science Advances, doi.org/hsxs).

Passive solar heating. The one thing that has always crosses my mind when thinking about it, is, if it worked, we would all be using it.

Welcome Large and South facing, with integrated PV. And good gutters because if you can see the beacon it is about to rain, if you can't see it, it is raining. More seriously, have you any restrictions on the build concerning sewage and services (at least no gas to worry about).

Two things. Have the people who have quoted you just used default insulation levels for the UFH i.e. 70mm of insulation? Have they used a default power per square metre number i.e. 25W.m-2 Generally, larger buildings take less energy, on a metre squared basis, than smaller ones. With a building that size, you can get a lot of PV on the flat roof, that would offset a lot of the running costs.

Only had a quick look, but the units are showing kWh.m-2. Is that for the whole month? So taking January, at noon, 13 kWh.m-2 Divide by 31 (days in month) and that comes out as a mean of 0.42 kWh.m-2. This seems a bit high, but may be correct for a clear sky when the direct beam is measured.

With your nails painted, was it a Puff Adder.

Did she say 'Moooove over'

It is now.

You could, take it to a specialist engineering company and get them to accurately bore holes the complete length of each half. Then get a tie rod and washers and nuts at each end. Tension the tie rod up. Think of it as a pre-stressed structural member. Where is @Gus Potter he could calculate how many turns on a threaded bar will be needed. Or just stick a rawl plug in a hole.

It is the smallest independent circuit in the system, not the compete system.

Not in my pots they won't. Got furry fungus on my potatoes though.

How about this one. Not read it myself, just a quick skim. Does talk about thermal mass though. https://www.irjet.net/archives/V8/i2/IRJET-V8I2307.pdf I think the problem with using timber shelves is that the grain needs to be pointing towards the heat source (sun). Books should be similar to cellulose insulation, a bit denser, with a higher volumetric heat capacity, but greater thermal conductivity as they have less air between the pages. I find that books, when stored badly, go mouldy. My first dissertation rotted away in my first house in 18 months. Shame as I was quite proud of it at the time. I once modelled this and then created an experiment. I used 15 W.m-2 and 25 W.m-2. There was very little rise in temperature at those low levels. Newton's ghost was hanging around I think, then Fourier came and gave me a kicking.

Why don't oil burners modulate. My car is a diesel, modulated extremely well.

Would you be interested in putting energy meters on both the ST and the DHW side of the PV. Chart the readings against your weather station. (the ST thermal meter need not be an expensive one, just something that logs the times it is running and the flow and return temperatures, a RPi job)

Like any water problem. How to remove the water faster than it collects. Just complicated by the amount of suspended solids in it, evaporation rates and frequency of rainfall.

When the USA decided to put a man on the moon, they did not know, in detail, how they would achieve it. So they made the big decisions first i.e. man on moon and return. Then looked at the next big decision, getting to orbit, why they used a 3 stage rocket, was all that was realistic at the time. Then the journey between Earth and Moon. Easy, a large enough container to live in. And so forth. What they did not do was get stuck on details like the size of windows and the colour of the bog, all that flushes out later. So make those big decisions now, write them down, amend if necessary, get an orderly list, then start to go into detail. Much of the detail can be changed easily. So How large is the house--> 1 or 2 storeys-->Number of rooms Running Costs--> very low or ordinary--> renewables energy or traditional Build Type--> quick to watertight or quick to completely finish And so on.

Could be. My seed was quite old, been in the useful draw for 2 or 3 years. Just got a timelspse package for my old kindle. Shall see if I can set it up overlooking the beauties.

Usual to send ones like that to a psychotherapist. Sprouted a lot faster than mine.

Just cost me £480 to have the mixer unit (actually the box in the loft) on my Mother's Aqualisa shower replaced. No real complaints as it is well over 20 years old (we are not quite sure when it was new). Simple control. Press button, it comes up to temperature, light stops flashing. Temperature is controlled by simply turning a dial. I assume the temperature has an upper limit for safety.

It is the same, really. With the sawdust and shavings being the inefficiency of the process. If you start with the plant growing, energy forces the chemical rearrangements. Then, when you saw and chisel, you are adding energy to break those chemical bonds, usually causing a rise in temperature (I bet you have touched a drill bit right after use). So rather than think of woodworking in a top down manner i.e. what saw blade is best, think if it from bottom up i.e. how strong are these bonds, do I need lots of small cuts, or fewer large cuts. Richard Feynman was once accused of not appreciating the beauty of nature, his reply was along the lines of: "I can see the beauty in a flower, just like everyone else. I can also see the beauty of how the cells are arranged, and the atoms that make those cells, and the equations that describe those atoms". Got to be better than just using a bigger hammer.

Just think of heating as a radiative model. Add energy to any material and electrons will be raised up an orbital level. Then, as the electrons drop down to the more stable position that they prefer to be in, a photon of light is produced. This photon can be thought of as pure energy. That photon will soon hit another electron, raising the energy, only for that energy to be released again. This goes on forever (or untill all electrons are at the lowest energy state). Sometimes there is not enough energy to move an electron up a level, but enough to twist, turn and unbalance the whole atom. This is how energy is stored. Some materials soon rearrange themselves, giving up that heat quickly, others take there time, so can store energy for longer. So like a game of snooker, bounce balls of each other, but just think that instead of the colours being worth more points, they are just different materials with different energy levels waiting to be released. What's hard about that.