sicetaitsimple wrote:
You can burn gas in a condensing boiler to heat yourself, with an efficiency of almost 100% on PCI.
You can also convert it into a combined cycle power plant, with a yield of almost 60%, we are going to simplify taking 50% which more than covers losses on the networks.
With a very good heat pump, an average COP of 4, you will have in heat returned a yield of 50% * 4, or 200%, compared to the initial "gas" energy that enters the system.
So certainly it is not free, because a good heat pump is like your pellet boiler, it is not free! But you can have a much better performance (compared to the incoming gas) than a boiler very efficient condensation.
I am combining your two messages.
Yes, if we have a surplus in renewables, what you say holds. For now, we have I do not know how many nuclear units are running! And we are in the process of building them (EPR of Flamanville).
And I'm talking about there, the 15/20 years to come. My boiler does not have a longer life expectancy.
Today, we have a "bouquet" of energy. With potential for recoverable biomass - French forests are growing, and standing stock is growing. Even if we can worry about some disproportionate projects.
I am going to put it like this: as long as the renewables are not structurally in surplus, I would find it logical that we better plan the management of these different sources. And I find it incoherent, from a thermodynamic point of view (I had forgotten that you were in the energies!), To use MASSIVELY the form of electrical energy for thermal applications. Of course, as always, there are situations: "slight" renovation of an old Alsatian house ... So marginally, of course. But MASSIVELY, there is something wrong! [As long as renewable energies are not structurally in surplus -
during heating period, of course !]
But I remain enraged that currently a basic house is equipped with electricity. Because the RT2012. And because for the manufacturer, it is the cheapest. Even here, in the "village subdivision" zone, with the Alsatian forest ...
This is what makes me angry. And there is an electricity "lobby" which is, whether we like it or not, a direct ally of the nuclear lobby. Including "thermal engineers" who are in the thermal, those that sellers of fertilizers, pesticides or tractors are "agricultural engineers". This does not detract from their competence. It's just the wrong paradigm. Or ethics?
We may not agree. I express a point of view!