But based on what you are saying, our insulated house would not need a heating/cooling system. Bring it to temperature and it will hold forever.
Have you actually run boilers? How much insulation has to be on them? Give me facts, not theory. Tell me about the power plants you were in.
Didn't find your answer? Ask the community — no account required.
T
The Natural Philosopher
Of course there is some loss, but actually a steam turbine ramps up pretty quickly from static. As they were used extensively in ships fora a while
I dint know of the relative merits of running them disconnected or as 'spinning reserve'. What I do know is that the energy to run them either way is a small fraction of full power
Absolutely,. With gas prices back to pre covid levels my electricity bills are now 4 times what they were.
The only thing that has changed is that there is less fossil and nuclear power and more renewable on the grid
Go figure
>
T
The Natural Philosopher
Yeah, thats te EU. Here we import a small fraction from the USA. Mainly by product of their lumber industry. The EU can go f*ck itself. I am sick of the lies , corruption and duplicity and the German card being played all the time,
T
The Natural Philosopher
I built a house. I know all about heat calculations. How much you insulate depends on your fuel costs and the rate of interest. But that sort of cost benefit analysis seems beyond you.
My hot water boiler feeds an insulated tank. It stays hot all day without need to add heat.
J
John Larkin
There are forests being grown in the USA just to make wood chips for "renewable" power plants in europe.
Cold and hungry people will vote for people who will give them heat and food, but there are time lags in that feedback loop.
T
The Natural Philosopher
Evidence?
Some one did the calculations. The lumber business in the USA is MASSIVE. If they can sell on the waste as chippings for fuel, why not? And if these first they are growing are sustainable, then again, why not?
Either they are able to grow what they burn and the carbon cycle is closed, or they will run out of forests and solve the problem that way.
Not so very great lags as current European unrest is showing
formatting link
formatting link
And in Germany they are in recession We are not
formatting link
I COULD blame it all on the EU, rather than Brexit.
R
rbowman
Perhaps you want to review physics, particularly the thermodynamics part.
E
Ed Pawlowski
Yes, I had the same and works great in the house. However, I also ran a steam plant with a couple of boilers. It does not work the way you think it does. I've also been in large power plants running steam boilers for electricity.
Get back to me when you figure how to maintain 200psi with just some insulation.
T
The Natural Philosopher
No, I don't need to do that. You do.
The earth is still with a molten core. That's because it has a large volume to surface ratio and some fairly good insulation, and nothing is keeping it warm apart from a smidgeon of decay heat
T
The Natural Philosopher
No you haven't. maintaining 200 psi is easy with out any insulation . any tractor tyre can do it.
You have no idea about the underlying physics of anything. You just know what your limited experience made you *think* was the case.
J
John Larkin
This ain't hard to Google:
formatting link
I have a friend in Mississippi who grows fast-growing trees purely for chipping. That's more profitable than letting them grow twice as long into lumber grade.
Some gets burned, some pulped into paper products.
J
John Larkin
200 psi was for very old piston engines. Serious turbines run more like 2000 psi and over 1000 deg F.
J
John Larkin
Do you fill your tires with steam?
But 200 PSI is an interesting pressure for a tractor tire. Mid-20s is more common.
E
Ed Pawlowski
So what is the temperature range of that tractor tyre? What is the pressure difference as temperature changes? They do lose pressure as the temperature drops, physics at work.
A I said, get back to me when you see reality of running steam boilers. Your ego will explode once you learn about them from practical experience.
R
rbowman
If you had tire pressure monitors on a very cold morning you would learn a bit about the ideal gas law.
R
rbowman
formatting link
Go back to metaphysics.
T
The Natural Philosopher
No they dont. Not according to what i can find. 1000F yes, 2000 psi no
T
The Natural Philosopher
My bad, I was thinking of lorry tires
T
The Natural Philosopher
The contention was that it took a LOT OF energy to keep something hot for any length of time.
My assertion is that with perfect insulation, it takes none, and in the real world it doesn't take a lot.
Heat loss from large structures is far far slower than smaller ones anyone who stops to think about a tank of hot water versus a teaspoon of it will know.
And red herrings about pressure are irrelevant, Pressure can be maintained forever inside a sealed enclosure.
The issue is simple. How much heatloss is there from a well designed well insulated steam boiler at 600°C and therefore how much energy does it take to keep it there?
I'm sorry, I assumed a better understanding of physics in people here
E
Ed Pawlowski
But the pressure is variable with temperature change. In cold weather my tire pressure can drop 3 psi overnight. It will also increase as I drive, especially in hot weather and a 5 psi increase is common.
Not a red herring, but reality.
More than you think. Get yourself into a power plant and take a look.
You should be sorry that your theory does not play out in the real world. Life is more than reading a book.
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required
Report Content
You are reporting this content to the moderators. They will look at it
ASAP.