Solar mandatory in Germany: green dictatorship?

[Christophe]

I saw thermals (vacuum tubes with phase change) producing water at 45 ° in the rain, in a car wash center ...

The heat pipe solar panels are mini heat pump without compressor, so it is possible that they actually produce without direct radiation but in the rain still allows me to doubt ... I lean for inertia ..

Anyway have you seen the prices of the heat pipe system? Not significant of what is on the market ...

Martian, look at this doc: https://www.econologie.com/viessmann-sol ... -3678.html

[Rulian]

It is because I am awake that I doubt precisely ...

It does not seem obvious to me: we have already seen PV cells heating a DHW tank ...

You see evil everywhere Christophe. The best is to go check on the site of the municipality in question ... We would need a German speaker for this small mission.

I find this measure interesting and no more dictatorial than the ridiculous architectural rules which standardize buildings as much as possible and forbid you to choose even the color of your tiles. But what about buildings? Because it is better to have a few buildings not optimized in terms of energy than an army of pavilions with a few signs to buy a conscience. I imagine that the municipality also has something for buildings. In France, we could force "clean" approaches to new or renovation by imposing specifications on building permits. But I don't know if a municipality has the right to vote on its own specifications on its territory, regardless of national / regional / departmental rules.

[Christophe]

Rulian is the hospital that does not care about charity there ... Already returned to Salon EnR? Not too bad at it?

I saw a report in a news, it is indeed about Solar Thermal (fortunately).

And this only concerns:
a) new houses
b) roof renovations

So: it's almost the same as the Belgian bill concerning point a) knowing that a roof renovation is still quite rare (only on very old buildings).

So before crying out to the dictatorship you should know the definition ...

On the other hand the oil dictatorship... no, I’m silent otherwise Rulian will tell me again that I see evil everywhere

[Woodcutter]

No agreement, a thermal can very well produce without direct radiation!
I saw thermals (vacuum tubes with phase change) producing water at 45 ° in the rain, in a car wash center ...

Are you sure the hot water came from the sensors?

Which vacuum sensors? what is "phase change"?

No, thinking about it, it came from the sky. Here, that's it, it's GOD who was making hot water rain ... (must say that I had asked him, too ...)

A vacuum sensor is a tube (in polycarbonate, mainly) in which a vacuum is created (so that the few photons lost by chance do not go unnecessarily tickle air molecules that have nothing to do there ... ) and which contains over its entire height a thin corrugated metal plate (to increase the capture surface) of dark color (photons love it!) which includes in its center a tube in which circulates a mixture of water and alcohol at a fairly low pressure (<1 atm.) which has the particularity of boiling at approximately 25 ° C. In doing so, the vapors migrate to the top of the tube where the colder collecting antenna condenses them (and they descend into the tube).
Since the heat of change of state is much more important than the mass heat, the transfer of calories is maximized at the moment when it is needed most, that is to say in low light conditions.

PS: this constitutes a kind of summary of my meager knowledge on the subject: I am not at all a specialist in this field, but I inform myself. If there are TRUE solar thermal specialists who find my explanation to be wrong, don't hesitate ...

I saw thermals (vacuum tubes with phase change) producing water at 45 ° in the rain, in a car wash center ...

The heat pipe solar panels are mini heat pump without compressor, so it is possible that they actually produce without direct radiation but in the rain still allows me to doubt ... I lean for inertia ..

Anyway have you seen the prices of the heat pipe system? Not significant of what is on the market ... [...]

Well doubt if you want, I'm sure of my sources ...

Vacuum tubes are falling and constitute an interesting response for "borderline" cases with flat collectors ...

[Christophe]

Yes I doubt ... a solar panel which recovers something other than the IR of the sun it is more a solar panel but a heat pump. So I think your thing was inertia ...

Vacuum tubes are falling and constitute an interesting response for "borderline" cases with flat collectors ...

@ 2000 € per m² ?

Take a look at Viessman's doc: https://www.econologie.com/viessmann-sol ... -3678.html

Page 25 VitoSol 300-T: 10 000 € HT the kit for 6m² ...
I don't even know if there is a workforce ...
On the other hand there is not much difference in price between the tubes without and with heat pipes ...

https://www.econologie.com/panneaux-sola ... -3679.html

[crispus]

10 000 € HT the kit for 6m² ...
I don't even know if there is a workforce ...

With or without tax credit?

[Christophe]

Maieuh ...

Without ... but eligible equipment ... obviously ...

[Remundo]

10000 Euros for 6m² of thermal, labor not included ?? !!

It is 2 times more expensive than PV !! (excluding grants)

Okay, but it's not the same

at this price, buy black painted sheets and make a water coil under your roof!

[Christophe]

Yep, sorry but true ... I rewrite I rewrite but what is the point of a panel with 95% complex yield, therefore expensive and not necessarily reliable? Environmentally not much because we will never recover more than what the sun provides.

So for the same price it is necessary to privilege the surface to the detriment of pure yield ...

[Christophe]

Snap of the day: https://www.econologie.com/dictature-eco ... -3845.html