SteamyTea

They are if the CoP, Temperatures and outputs are identical. So basically no. They all perform slightly differently at different temperatures. And to make matter worse they have different controllers with different terminology. Not wanting to teach my grandmother how to suck eggs, do you know the basics of how an ASHP works and what parameters change?

They have been discussed on here quite a bit. Do a search for them. I think one person has had one for quite a few years.

Works for me. Interesting this legionella cycle. If you are heating with an electrical element, any water that touches it is going to be zapped to about 200°C for a few seconds. I wonder if that is enough without having to do a separate cycles every now and again. Different scenario if using a coil of a heat pump, but probably fine with a higher temperature gas or oil system.

Interesting, probably needs more unpicking. Does if face South West, or is is shaded from sun and wind? when you say well ventilated on the inside, do you mean in the room, or in a cavity? Was the right mix of render used?

Do you know the relative humidity in the room/building. Would have thought that would be a good gauge to how dry the walls are.

" Hot water: Most of the excess was captured in the hot water tank using the Solic 200 controller and a 1kW twenty seven inch immersion. Twice even reaching over 60C resetting the countdown timer designed to warn us when the tank has not been over 60C for more than 10 days." I take it that is just for a legionella cycle?

Will it actually pull out a twisted nail?

Going to look at it later. But you use MatLab. May ask you to do me a favour.

Hello. If you ventilate the inside of a house properly, there is no need to go the lime route. Lime and cement render are not drastically different in breathability. And with cement based, it will at least set hard enough this decade.

You will have a number of problems being energy self sufficient. Wind and especially solar power, which is several times cheaper than wind, is very difuse energy. So you need lots of area that is unaffected by shading. South facing is best, but systems can be split up electrical, so they can perform better. An ASHP is now, if bought independently, the cheapest renewable heating/DHW system you can get. Linking PV and an ASHP is not technically hard, it just gets expensive. If you have mains power, have a word with your DNO to see what size system you can connect. The usual limit is 4 kW, actually 16 amps per phase. DO NOT tell them you want an ASHP. That will just cause problems.

I often get offered old slates. Seen skips half full of them. Bit of a trek to pick them up mind, unless you are local. There is a reason it is called Land's End.

Can you angle grind the head off with a sanding disc, then force the timbers apart?

Or how low is a roof. Generally a fence can be 6 foot high I think. Modules are usually 1m wide by 1.6m tall. If you tilt that fence as I suggest, you will get more modules on it, and better yields. Say it is to deflect noise. Works by quantum effects.

Welcome. Graven Ill?

Mixed units. £1938/m². Could build a proper house for that.

The 9m² is for domestic. Commercial is totally different legislation. Mainly because they are dealing in hectares, 10,000 m², rather that a few m². Worth remembering that for every rule that says you should do something, there is another that says you can't.

Yes, but as long as it is no worse than resistance heating, you are better off. Why one needs to know the local weather. -10 does not happen often, or for long.

Can you get the logged data out of it and onto a PC?

Make a wall/fence/frame that is tilted.

Let us call that 4 hours, at 5 kW, 20 kWh. Water will start off at around 30°C and if we raise the whole 200 litres to 52°C, then that is 5.1 kWh. But let us make the whole job harder. Let us assume that the OP starts with a cylinder of water that is at 52°C and running it until the bath is full uses that whole 200 lt, and the water is in the Goldilocks zone. So now the water has to be heated from 8°C to 52°C, 44°C. 10.2 kWh. I think 6 kW is going to be fine. Would need to look at the performance curve of the particular ASHP to see what the CoP is at different temperatures.

Use relative humidity as a gauge. Find a level you are comfortable with, i.e. 60%, then reduce your flows until you get to that. Worrying about O, CO, CO2, NOXs, bacteria and viruses in the air is not going to make you more or less 'healthy'. I work in a place with air extraction so huge, it makes for a 20 MPH wind by an open door. I still feel tired after a nights work. It is normal.

kWh. kW is the power kWh is the energy. We really should use joules, J, for energy, then there would be no confusion. I would rather buy my diesel by the amount of energy I get, rather than the variable amount of energy that comes in a litre of it.

Good info, should make this thread even more fun.

Have you run it through PVGIS to see how it compares to putting modules flat on the roof? You may be better off with an East West fence with modules on either side.

Is that vibration or water noise?