Mains power voltage drop to reduce usage?

At six months, I would be in trouble with the company, they would be sending inspectors and asking the police.

Maybe there never was such a problem in Spain. We did things right from the start.

LOL.

Not enough people would do.

Look, I am very happy with my smart meter and with everybody having them.

Of course it is.

Don't you know Doctor Zhivago was filmed here, with all that snow?

You can be without in areas of the south of Spain, but in winter everybody needs something.

Yeah, sure.

I do.

Consider a "100% efficient" gas or electric heater. A very hot element warms room air.

But one could add a thermoelectric generator between the heat source and the room air and get just as much hot air, but free electricity too! Use that to make more heat.

Water used to be unmetered at our cabin, but then they installed smart meters. I got an email from TDPUD that they suspected a leak, based on the usage pattern. They sent me graphs and we saw a constant low-level flow when nobody was there. It was a leaking shutoff+drain valve.

Realtime metering catches stuff like that.

No? What about:

No, you couldnt.

The energy from the electricity would subtract from the heat output of the device. Unless the electricity all ends up as heat, anything else - like mechanical power - has to be exchanged for heat.

That is equivalent to saying that heat pumps can't work.

It's an impedance matching problem. It's inefficient to use a 1900C gas flame to directly heat air to 25C.

No it isnt.

No, it isnt

It's just an exercise in design

California has mandated that future water heaters must be heat pumps.

A heat pump can deliver a given amount of space heating or hot water at about 1/3 the cost of direct gas or resistive electric heating.

Suppose you have 120 VAC and want to charge a 24 volt battery. You could rectify and filter to 150 VDC, and connect that to the battery through a resistor. Or you could use a transformer or a switching regulator. Your engineering decision.

Yes. Try it. You can Spice a thermal system assuming

ELECTRICAL THERMAL

which is accurate to about 10%.

Note that current is not power, as integrated heat flow is not energy.

Irrelevaqnt

But not without an external heat source like the air or round.

granndmither eggs suck

I dint know how to spice a thermal system I do know because I am an engineer, everything below

Jesus Christ, I have a masters in electrical engineering and an ordinary degree in general engineering including thermal energy design.

Go and patronise your hamster

As has been pointed out to you thermal transfer efficiency is a function of how hot the working fluid gets and how cold the final exhaust is, And infinitely large heat exchanger that heats to in infinitesimal amount over ambient is 100% efficient.

The hotter the input to a heat exchanger the more efficient it is, the colder the outflow from it the more efficient it is, so a warm condensing boiler is more efficient all other things being equal to one that gets water to over 100°C. Like wise the hotter the combustion temperature the more efficient it will be as well. Which is why gas turbines are once they are a attached to stream turbines,more efficient than steam turbines alone.

You assume a 2-port device, like a power supply charging a battery through a resistor.

In my case of a 150 VDC supply charging a battery through a resistor, the battery gets all its current from the supply and the resistor gets hot. But if you add a buck switcher, the battery gets most of its current from ground. Supply current can be about 20% of battery current.

Electronics is wonderful, because we can get nearly ideal parts, and our buck switcher can work against true 0-volt ground. A heat pump uses less than ideal parts and can't work against absolute zero, but it's still a lot better than having a conductive path from a high temp source to a low temp load.

The biggest part of a steam turbine system is the condenser, the 3rd port heat dump, the switcher's ground. That's the big reason we don't have steam powered cars.

Yes, you can blame Mr Carnot for that :-).

For best mechanical (and electric) efficiency, you should have as much temperature _difference_ between the hot and cold side (measured in Kelvins) as possible.You should maximize the hot side temperature and minimize the cold side temperature.

In a coal fired power station, you can have hit side temperatures over

Equally important is the cold side temperature, in cold climate near the sea. you cold get about 0 C or 273 K, but in hot climate with air cooling towers, the cold side temperature can be over 40 C,

Practical efficiencies for coal fired plants can be over 40 %, while nuclear plants are above 30 %.

Those of us with long memories and who lived in the NYC area recall the original Indian Point nuclear power plant (they later added #2 and #3) had a fossil fueled additional boiler to yes, raise the temperature of the steam even hgher...

Leaking water I don't care about, it's free, if it's big enough I see water. Leaking gas I smell. Shorting electricity I smell.

You believe the internet. Ok.

Some of us have brains.

Why? So you don't waste 20 cents on a new battery?