SteamyTea

Hence But there are a lot of nobs that tinker under the assumption that relatively low voltage is pretty 'safe'.

There was someone, in the dim and distant past, who set his ST up so that it never overheated, then all he needed was a simple controller. There is a problem that if, and it is not very likely, that the DC side electrolysed the water, it would put off the hydrogen economy pretty quickly.

Back end of.

The easier way to to get someone that already has a stove to find out what the mean surface area temperature is and then assume an airflow around it (they can keep a small paper plane hovering, so not that great), and work it out from there. It will probably be a lot less than stated.

https://www.ebay.co.uk/itm/254103933935 Yes, a 13 and a half quid one if you stick to 48V modules.

The element may be OK, but how about the thermal cutout, and a bog standard thermostat, can they cope with the extra arcing?

I think in a home wood burner, visible smoke is more to do with the water content being driven off. From the colour you can estimate the temperature, so if you know the area that it is radiating from, you can work out the power it is delivering. Temperature (°C) Colour 480 Barely red in the dark 600 Dark red 800 Cherry red 950 Orange, barely visible in sunlight 1100 Orange-yellow, visible in bright sunlight 1300 Light yellow, nearly blinding, welding goggles required. 1500 Nearly white, blinding

Would also show if the system is not generating without having to go into the inverter menus.

Well it will be at those sort of prices.

Yes, but I charge a lot for it. Use the same business model as Crapple. Not going to tell anyone I am pulling the plug in the kit tomorrow. Ding Ding, I am in the bus.

I was driving up country, still here. But for about 10 miles on the A30, at 6:30 AM yesterday were free Christmas trees in the road. Driving against a stiff NE wind hurts my fuel consumption by about 10 MPG.

And SteamyTea Basics. Thought I would add the list just to make it the longest post ever.

Did we not have a similar conversation about the cost if fitting roof integrated PV against tiles. And you decided all the people that had actually done it were talking nonsense.

I use my camping stove and some LED lanterns on the odd occasion it has been prolonged. Having no water for half a day was worse.

Over what time scale?

Isn't that the same as I live in the Windy South West, yesterday there were a few thousand houses without power. I have never been seriously affected. I don't know if I was without power yesterday as I decide (actually had to) drive in 80 MPH crosswind for the first 100 miles, then the last 80 were in snow.

Oh yes, but it is not really comparable is it. Taking the same methodology, 99.75% of the solar irradiance is lost when growing trees.

There is a huge difference between running a stove in a lab and then running one in a house. Maybe 50% up the chimney us a little harsh, but I doubt many will ever reach maximum efficiency for more than a few minutes at a time. So about 20 kWh of energy.

That will be about 134 m2. Or about 170 kg of air. To heat that air up 1 K will take 170, kJ of energy, which is 47 kWh. So a 10 kW burner would take 4.7 hours to raise the room up 1 K. Timber has an energy density of about 4.5 kWh.kg-1, but half of that goes up the chimney, so you would be looking to put 20 kg of timber in it. (to me that seems an lot of timber to heat just the air up, so may have made a mistake) Yes, I was 1000 out, so 17 seconds to raise the room up 1 K and about 200 grams of timber.

A 2 kW portable generator would give you enough juice to keep you going. And a lot less PM2.5/10s in the house.

A few seconds of my drive along the M4 yesterday. VID_20211127_093611102.mp4

How many different protocols are currently in use for off the shelf home automation? And why should the latest one be any better, or longer lasting, that the previous ones?

These pumps draw about 100 W. Can you get a couple if PV modules and a second pump that runs when the sun is out, and switches off the mains powered pump.

First kW, or first kWh. They are different things.

I often here this said. How do you unlock the back door? Or open the interconnecting door. Point I am making is how much automation is really necessary. Very little in my opinion.