SteamyTea

Like most seemingly good ideas, they usually crash and burn.

That is 50 cycles a day if spread over a year. I would expect no more than 12. So the HP may already have done 4 years work, and in terms of wear more as generally the 'damage' is done during the start up.

A fridge could use that much if it is constantly running. A router will just draw a few watts. You say it is constantly cycling this sounds like it has not been set up at all, or is faulty. Turn it off and get the plumber back in.

Is this thread been doubled up? Can't help with real world examples. Have you measured the amount of water you use and at what temperatures? There is a bit of a myth that heat pumps cannot deliver 'enough'. It is totally wrong and is really down to sizing properly. An 8 kW HP, of any sort, is still delivering the same power as an 8 kW gas or oil boiler. It is what the watt actually means.

One Pixel Pocster

You are going to scare the crap out of delivery boys. Or have you got rid of the bathcam.

Have we not been warned about this sort of talk, wives and daughters read this.

Depends on the ply, or more a case of what resin is used to bond it. And then there are ways around it.

I know of a man with a shed that has a set of Crapi wheels that are worth less than that.

But as inverters are current sources, trying to drive into what is basically an open circuit and minimal load would likely have the voltage swinging wildly. The mains supply isn't just for frequency control... Why I was wondering if it could be tricked. It may need a reasonable resistance load onto it, say 1 kW, to give the impression there is some grid impedance. Was just a thought.

Direct drive and let the electronics deal with the rest. I seem to remember that the peripheral speed of the turbine needs to be half the jet velocity for a Pelton wheel.

Construction has never been on lockdown, just lazy suppliers not wanting to work as they can get paid by the government. Wish my boss was that sensible.

How much. I can't see any reason why all inverters are not capable of being islanding ones, except for the bean counters stopping it. Just looked at the price of pure off grid inverters and they are a lot cheaper than grid ones. This is understandable as they do not need a safety certificate i.e G99. So may be cheaper to have a mix of inverters and a large change over switch. Could a pure sine wave inverter trick a grid inverter to boot up?

You have never lived in a student house then.

That starts to get expensive as a 4 or 6 kW 'islanding' inverter is not cheap. You would use a combination of a generator well as PV, Wind, nanoHydro and storage in that case.

Those of us that work in hospitality are concerned about this. Eventhough no one is meant to be down, hundreds are. last week was almost as busy as normal, next week may be dreadful.

If EV batteries are used as a guide, probably still useful. And inverters seem to be lasting better than most people assumed. Hard to come by independent data though.

I usually get quips, but this one has passed me by. I am having a bad day. Got new bank card, took it to bank to get it activated as I was there anyway. They can't activate it, only the cash machine can. Put it in, checked balance and all is fine. Since then, done 4 transactions, only 3 have worked. 40 minutes on phone waiting for someone to answer 'because of COVID-19'. Did try the online chat, only to find out it is a chat-bot that does not understand 'my new card is not working'. Been a waste of a day off. Oh, and two of my family members, and their families have had it. And of course, Tim Brooke-Taylor died of it.

Could save me up to 50p a day. But all sarcasm aside, I could put in a wet heating system and gave more control. But for just me it is not worth it, yet.

How would you feel if your house was 48m². And then you have to take off about 10m² for bathroom and landing\staircase? My old neighbours, 2 adults, 2 teenage boys lived like that for years. So I cannot agree that we should not build bigger. We need to build better. That way it is easy to make net zero energy homes, you can't do that with only 2 kW of PV on the roof and walls with only 60mm of insulation. Oh, and a garden not big enough to put an ASHP in.

How long ago? Because

As far as I know the standards are the same. There is no exemption based on projected usage. But realistically, as we have the smallest housing in the EU, we should be looking at building larger places.

I doubt a tiny house could meet energy standards, too much surface area.

Relax planning laws and building standard.

As I was pointing out earlier, this does not always optimise the generation/storage combination. It is that optimisation where thermal storage has a problem, almost regardless of scale. Scaling really just reduces losses per unit stored. Yes you can, and you could make use of the latent heat as it changes from gas to liquid, it is how most solar thermal evacuated tubes work. 334 kJ/kg as opposed to 4.18 kJ/kg. Would need a sturdy box to keep it in.