Stirling with Rotary Annular Trilobic Pistons (SPRATL)

[bingouly]

Logically, when we install an oil / wood / ... boiler we make sure that it produces enough to heat what we have to heat!

So use the surplus to provide electricity for a heat pump, it becomes a gas plant there!

If you want a heat pump, it is better to take electricity directly from EDF.

What you forget remundo is that the stirling converts from 3 or 4 kW thermal to 1 kW electric.

[Cuicui]

If you want a heat pump, it is better to take electricity directly from EDF. What you forget remundo is that the stirling converts from 3 or 4 kW thermal to 1 kW electric.

From the moment one uses the electricity produced by the Stirling to power a heating system by heat pump, one effectively reaches a degree of complexity which makes the whole unattractive.

[Remundo]

Hi friends,

I forgot nothing at all, everything is on the FAQ page of my site.

It's not a gas plant if you use the EDF network.

It is neither more nor less than a wood boiler supported by a heat pump ...

I know some here who have a boiler supported by a cumulus that heats water in the sun by thermal solar panel ...

That by multiplying the calorific value of the fuel by 2, it's well worth the cost. If you split your wood by hand, you will see that your back will be better ...

But there will always be a sorrowful spirit which will say that it prefers to connect an electric radiator: it is true that conceptually, it is much more accessible ...

[Cuicui]

I find it unfortunate to use the electricity produced by a Stirling to increase the efficiency of heating. Isn't it better to use this precious energy to be independent vis-à-vis EDF?
Heat is degraded energy that is easy to obtain (combustion of biomass, solar collectors, geothermal energy) while electrical energy is highly developed and can be used for a whole host of technical uses. I think using it for heating, even if it is very efficient with a heat pump, is like giving jam to the pigs.

[bingouly]

Indeed, it is possible, but I do not think that is what is the most profitable, that's all.

If you have to pay the stirling + the heat pump, possibly the external pipes if geothermal, and add radiators can be for the low t °, it starts to make a good budget, and those who heat themselves to the toaster are not likely to tip over.

Personally, I saw stirling more as an alternative thing to photovoltaics, and I thought I understood that SPRATL would have allowed it because it would more easily accept small temperature delta ... I still dream

and as said cuicui, independence vis-à-vis the EDF would be more interesting, or resale

[Remundo]

Hello again friends!

I find it unfortunate to use the electricity produced by a Stirling to increase the efficiency of heating. Isn't it better to use this precious energy to be independent vis-à-vis EDF?
Heat is degraded energy that is easy to obtain (combustion of biomass, solar collectors, geothermal energy) while electrical energy is highly developed and can be used for a whole host of technical uses. I think using it for heating, even if it is very efficient with a heat pump, is like giving jam to the pigs.

It is a choice and even here a philosophy ... because here are the 2 choices:

1. Electrical independence and thermal autarky
by cogeneration: burning what is needed to keep the heat for the house and inject electricity on EDF by consuming the least electricity possible.

2. Burn 2 to 3 times less fuel than a traditional boiler, but be dependent on electricity.
by the PAC / Cogen coupling, that is to say to obtain 4 times the energy of the electricity supplied by the Stirling engine as heat (combustible heat + PAC equivalent to at least 2 times the fuel burned, it's not nothing. ..)

In between, my heart swings, knowing that we can hybridize: for example in winter, we suck on the EDF network to run the heat pump in addition to the boiler. The rest of the time, we stay in cogen and we balance all the electricity on the network.

Etc. ..

[Remundo]

Indeed, it is possible, but I do not think that is what is the most profitable, that's all.

If you have to pay the stirling + the heat pump, possibly the external pipes if geothermal, and add radiators can be for the low t °, it starts to make a good budget, and those who heat themselves to the toaster are not likely to tip over.

Personally, I saw stirling more as an alternative thing to photovoltaics, and I thought I understood that SPRATL would have allowed it because it would more easily accept small temperature delta ... I still dream

and as said cuicui, independence vis-à-vis the EDF would be more interesting, or resale

Oh the most profitable ...

Chipped wood from the local forest (or reconditioned dry matter from urban organic waste) + automatic feed boiler + cogeneration.

But it is not ready to be done, must properly amortize the additional EPR and storage of its waste

For installation issues, there are clampins who build new at € 1000 per m² in Paris or Lyon, but that is reluctant to put 20 Euros to have a passive house (which will be recovered, and even more ...) , when their budget exceeds 000 or 3 Euros ...

Don't come to cry because it costs 5000 euros too much to buy

In addition, be aware that a heat pump with horizontal sensor costs very little because in general, we do not know what to do with the earth from the earthwork ... so just push it over the pipes ...

@+

[Remundo]

Ah I forgot for Bingouly ...

A future application of SPRATL could be the conversion of heat from roofs with thermal solar panels in summer into electricity ...

The yield will be low because of the low deltaT (less than 100 ° C), but we compensate by a large surface and a very abundant and free solar flux.

[Pascal HA PHAM]

uh ..... that to be awesome it's awesome!

but I'm afraid I didn't understand everything
how can we restore more calories than we consume?
we would start from a SPRATL which would cogenerate mechanical power and calories ....?

and then after that mixes the pencils a bit in my Tryphon scallion?

... a few more basic explanations would be welcome!

hair on the chin.

A+

Regards

Sunflower

[Remundo]

Hi Pascal, glad to read you here

I will try to be synthetic. The principle is as follows:

COUPLING Heat pump (PAC) + Stirling engine (MS)

A CAP is:
1 mechanical entrance
1 cool thermal input (soil, air)
1 lukewarm thermal outlet (60 ° C, heating and sanitary water)

The current PACs come out roughly:
400 W lukewarm for 100 W mechanical
(because of their "COP4" coefficient of performance 4)

A Stirling engine is:
1 high temperature hot input (the burner, 1000 ° C)
1 lukewarm outlet (cooling, 60 ° C)
1 mechanical outlet

Let's say that the MS for 100% high T ° C, gives:
40% mechanical, so 60% lukewarm.

NOW :

I burn 100 W of fuel: the MS gives me:
40 W mechanical and 60 W warm heating.

I take the 40 W mecha and I balance them in the heat pump:
160 W of warm heating.

Where, cumulative with the previous 60 W warm from the MS,
60 + 160 = 220 W of warm heating.

Hence 2,2 times less fuel compared to direct combustion (traditional boiler) for the same thermal effect in the home

[direct combustion where all the heat from the fuel would have heated the house directly.]


Am I clear? In any case I am awesome, and modest

hou there, the ankles tighten me very suddenly ...