SteamyTea

Basically yes. You need to disable the cloud service, usually easy to do. You can also, usually, change the default location that different applications saved files to. This is a bit harder. It all depends on the format that the image is saved as. jpg is a compressed format, so compressing it again often makes the file larger as it has to add the algorithm that the compression uses. Formats like bmp and tiff can be compressed, tiff has an option to compress with the zip format built in. Raster images, which are just dots on a grid, can be reduced in a number of ways. You can have reduce the number of colours, say from 32 bit to 16 bit. Increase the number of pixels that get averaged i.e. a 4 by 4 colour, hue and brightness to 8 by 8 average, you loose fidelity though. You can also reduce the number of pixel in the image, from say 1200 wide by 800 high to 600 wide by 400 high. The image is them around a quarter of the size. Again, fidelity is reduced and when you zoom in, it gets very fuzzy. It really depends what quality you need. If it is just for a screen background, you can resize it to screen resolution, and it will look fine. CAD files (vector) are a bit different. By default they are created with efficient algorithms, a start point, an end point and a formula that says what happens between those points, that is why they can be zoomed in on. CAD files do have a lot of other stuff attached to them though, and some formats add just about all the options available, even if they are not used. It is worth getting a copy of Irfanview, as it opens dozens of image file formats, and can save to dozens, it also allows easy resizing and compression. 7 Zip is a good, free, portable compression application that can crunch files, and encrypt them as well. Audio files are a different kettle of fish, they are much more complicated than image files. Though there are compressed formats i.e. mp3. These use a variable 'bit rate' and frequency clipping.

Aviation is really not that bad. If you look at the CO2/1000 km tonne, or even the CO2/passenger km metrics are not too bad. Cement production is similar. Like all things, it really comes down to using them sensibly. IT seems to be obsessed with speed and data transfer. One of the things I used to show my students, 25 years ago, was the difference between the same text as a Word document, a text file and a compressed text file. Why worry about about upload speeds when you can often make the data 50 times smaller.

Is that the same one I posted up last week? There is a good Curious Cases about diamonds. Much more interesting than you would imagine. https://www.bbc.co.uk/sounds/play/m0029rg8

That size is basically a small spa bath. Get a separate ASHP for it and keep it covered. If you get a nice rash on your body, change the water. https://my.clevelandclinic.org/health/diseases/23358-hot-tub-folliculitis

Only one U-Value = 1/ (thickness / k-Value)

I think it is because it is hard to fit it without a lot a time and carefulness. Large steel buildings have roofs that are PU/PIR sandwiched between steels sheets, I think @saveasteading may know more about this.

And find they are governed by the same Laws of Thermodynamics. The real problem is that too many people want to ignore the science.

It really comes down to what you want to achieve with thermal storage. There is energy input types. Input temperatures. Output Temperatures. Output Flow Rates (power). Storage Quantity (energy). Physical size. Overall Mass. Easy of Plumbing. Acceptable Thermal Losses. I have an all electric (E7), small house. My DHW is a 200lt, gravity fed, system that is pumped to the shower. Works fine and has done for 20 years (had to change the old cylinder when it was 20something years old. In all honesty, there is not really going to be much difference, on a small system, whichever type you choose, especially if you only have one energy input type i.e. electricity.

That is the air exiting your dungeon though.

It is an hour earlier here, but it isn't really as I am 7° West of you.

100 kWh.m-2.year-1

My RPi Zero W is still working. It logs and sends the data via the TOR network (did that bit just for fun).

It will be caused by the backfill, so probably very low in reality. It is more a starting point, rather than a finished formula. I am not sure how 'soils' react over time, the N.s will have an affect, but it is probably a differential equation dN/dt of some sort, i.e. as time passes, the movement gets less. One thing about foundations for lightweight buildings is that they may be limited if say, a bungalow is converted to a 2 storey place.

You could try this one, is used in cold forging. Where: Yf = flow stress of the material (Pa) A = cross-section area of the workpiece (m2) r = instantaneous radius of the workpiece (m) h = instantaneous height of the workpiece (m) µ = coefficient of friction between the die and the workpiece

It was not the impact of the 737s that brought down the Twin Towers, it was the softening and associated bucking of the steelwork. As @Gus Potter says, fire is a terrible thing. Is your oven stainless steel? There is a reason that SpaceX use it for rocket bodies, repeatedly.

Too much information; where is the mind bleach.

Oi, newtons. I take it that becomes 0.6 or 0.45m (wide) by 0.2m (high). As that has a mass, (volume times density, so around 250 to 327 kg, or in Roman Catholic up to 3.2 kN) it needs to be added to the static force. Is that right? Also, how how are unusual impact loads dealt with, these can be much, much higher that normal daily loads i.e. a piano can sit for years on the floor, but when Elton John pops around, dumps himself on the stool, it can bring the house down. May account for the extra large footware.

It is quite a problem. Maybe farmers need to contribute more in taxes to counteract the environmental damage they can do.

I am sure there is probably a picture or drawing of the roof in question up here, but is part of the roof timbers going to be open to either a cold side or a warm side, or both even? This can make a difference to the condensation risk. If I remember correctly, placing insulation over the top (exposed to the outside) edge of the timbers is better than placing insulation over the exposed edge on the inside.

Right, did not know that is a convention.

Should that be kN/m²? If I remember correctly, N is a newton, which is mass in kg multiplied by acceleration. So a 100 kg sitting on the ground is: 100 (kg) x 9.81 (m.s-2) =981 N. Spread that over an area of 0.25 m² and you get 3924, so with a bit of rounding, 4kN.m-2.

Basically what I found out when I did my bit of here about it. Lime does absorb some CO2 as the curing takes place, but not sure how much. There are environmentalists and environmentalists. Was interesting spending a year at university with a group of them and seeing where the priorities lay. It is a bit like climate change and politicians, unless the effects are immediate, then it can be ignored. Got to the timber building bit yet?

Well worth listening to this. Answers a lot of misconceptions about cement and concrete. https://www.bbc.co.uk/sounds/play/m0029rqw

Ask @Onoff There is a small amount of info here.

They are. There are structural foams. A lot of early computer cases and enclosures where made from they. Relatively cheap tooling and injection machines, so great for low volume, but good mechanical properties. This has sparked me interest in these polymers again. They fit between 3D printing and full injection moulding. When you get in your car, just think of all the things in it that are foams. Most of the stuff you can see, touch hit, and in an impact. If I was not so tired I would write up a bit more about them, like composite plastics, they are very under used, and more importantly, misunderstood, in the building industry.