SteamyTea

Number of ways, manometer would do it. Or a couple of BMP280s https://www.bosch-sensortec.com/products/environmental-sensors/pressure-sensors/pressure-sensors-bmp280-1.html I am using some BMP280s to see what the temperatures are doing. Easy to rig up once you realise that it is possible to add extra I2C pins to an RPi. Sensor Number, Date and Time, Temp, RH, Pressure i2C4,09/02/2021 18:12:33,15.14,37.1864298623,986.316160323 i2C4,09/02/2021 18:13:32,16.75,36.0736943753,986.391397008 i2C3,09/02/2021 18:13:32,0.81,69.812819981,987.416998524 i2C3,09/02/2021 18:14:31,0.78,70.1470805963,987.875455501 i2C4,09/02/2021 18:14:31,18.15,33.8904554416,986.36425019 Should be cold enough, fro long enough, to establish your kW.K-1 numbers, then you are only one step away from a predictive system.

Probably sold now. Search eBay for CurrentCost energy meter. For your monitoring you need a clamp on type (CT) and not the optical one. Here is one. https://www.ebay.co.uk/itm/Current-Cost-Monitor/293993103408?hash=item44735ac030:g:bxQAAOSwnEJgCbZA

That's interesting. There is a school of thought that is convinced that there are huge radiative losses via glazed areas, "because it radiates to space". I have never bought into it and always put it down to poor glazing.

That would use electricity, and then we would have to explain, to the quantum level, how it works. Then we would have to explain the two quantum theories. And the room would still be cold and damp. Set fire to the place and claim on insurance, at least it will be warm enough to drive the damp away.

Are you willing to get in a JCB and start digging after dowsing for gas pipes.

PVGIS https://re.jrc.ec.europa.eu/pvg_tools/en/#PVP

So you are not willing to test things to get data. Fair enough, you know best via your logic. As I said to another on here, there is more than one system of logic and I do not know your preferred type.

No, you can get heat pumps of just about any size, Carrier makes a 45 kW model, and you can always have several of them. It is a design problem, not a technology problem.

Not the levels of insulation, or airtightness, that is the problem. It is all down to the sizing for the heat losses. If you have two houses of identical design, in the same weather regime, but one has an overall heat load of say 1 kW.K-1, and the other has a heat load of 1.5W.K-1, it is a sizing issue. Just claiming that they only work best in well insulated houses is missing the real issue of bad design execution. (there ay be other reasons to not have one, but it is not thermodynamics)

The do work, but they have to be sized correctly. I could claim that your car does not work when it is cold, and if you had bought one to deal with ice and snow, you would be fine, for those few days a year when we have snow (actually got some here this morning). They are used, in the UK, to help get our CO2e emissions lowered, even if supplementary is sometimes needed.

It won't make the ASHP produce more power, but it can produce more energy (energy is the modern term for heat). By allowing the ASHP to run for longer, there is less of a cooling cycle as the ASHP is on more. This is why I am of the opinion that all heat pump systems should be fitted with a buffer. Just establishing what size, and to what temperature, is needed becomes the issue for greatest efficiency.

There are a whole raft of rules, regulations and laws about putting in water turbines. If people think that micro generation with wind is hard, try water.

M.G.H gives you the power of a water turbine. M is Mass Flow Rate in kg.s-1 G is gravity 9.81 m.s-2 H is height (or drop) in m. A wind turbine a a little more complicated, but still only multiplication. P = Cp.1/2.p.A.V3 Where P = power in watts Cp = efficiency of turbine p = air density A = swept area of turbine V = wind speed

Can you take the glazing out, fit the film, and hope the beading/seal keeps the water out. Maybe a smear of silicone as belt and braces.

But one very easy to test with a damp meter.

The fundamentals are the same as any heating system, just that sizing, heat losses and installation have to be done right. Just like any heating system. All you have to do it tell the tenant that if does not heat the air as quickly as an oversized gas boiler.

All corner need to have a large radius, can you get a cutter that can do that i.e. is there enough stone to centre the cutter in the right place? I have a large angle grinder with a large diamond blade on it.

Geometry.

So was Robert Maxwell. Czechs bounce.

Yes they are, keep reminding then of their despicable past.

Or one of the worse metrics. Insulation levels would be a good one, £/(linear metre.U-Value)

Contamination and ecology reports maybe.

Time before last I was in Bristol they had still not installed electricity. But now they have these, comes with a plug in the original packaging.

RTFM Here is, as an example, an Ecodan one.