What kind of heating for old home?

[dirk pitt]

no I did not ask the age of the captain.

[Gregconstruct]

[yann16]

Yes I confirm low temperature boiler of smoke ... no hot water production with the boiler ...

I am not at home these days, however, I can sleep and already given some info in addition to those already mentioned above.

Department of Charente (16), near Angoulême rarely temperatures below 0 ° ...

DRC
-3 large rooms of 30m² in square shape, 3,50 high (2 radiators / rooms)
-1 kitchen of 15 m² height: 3,10 (1 radiator 1,20 height, 16 elements, 3 thicknesses)
-1 corridor of 15 m² height: 3,5m (2 radiator)

1st floors
-3 bedroom of 30m² (same as ground floor)
-3 bathroom of 3m² each 3,1Om high (1 radiator each identical to the other rooms)
- corridor without radiator
-1 small room of 15m² (1 radiator)

the attic is insulated ....

Inhabited 7/7, except a few days and in this case temperature reduction to 15/16 °

2 people at the moment


Here are the most precise info for tonight because of my trip ...

[dirk pitt]

the most important info is missing: your current consumption.
if you use auxiliary heating, also indicate it: style 2 steres of wood.

if not, small inconsistency in the surface: by adding all the surfaces indicated + a corridor without radiator whose surface you have not indicated (estimated at 15m2) but which is heated by the other rooms I suppose;
I found 249m2 or in your first post you said 220m2

and therefore says 3.5m under ceiling you have to heat it all: 850m3

at first glance, you must consume in the 3600 liters of fuel oil

[yann16]

I could not give more precise details than this weekend, when I return ...

We bought this house in May 2008 so we do not yet know our consumption ... and I confirm the height under ceiling ...

While waiting for these details, would an air / water heat pump be so uninteresting as that?

Thank you for your answers

[dirk pitt]

So, I did the calculation backwards, assuming losses from 0.85 to 0.95W / m3 ° C which is already not too bad for the partially insulated old one. I think it's realistic given the configuration in floors and thick walls.

your chance is to be in a fairly gentle region: angouleme = 2260 DJU
information taken, your boiler has an annual yield of 94%
it would therefore give an annual energy expenditure between 3600 and 4000 Liters of fuel oil. (excluding sanitary water) or approximately 36000 to 40000 kWh
the power required for a reference temperature of -5 ° C ext would be 20kw max

I am not a PAC specialist but the mild climate seems favorable to me.
if you have an annual COP of 3 (random) it would make 13300kwh electric per year or about 1300 euros of heating.
be careful you will probably need a 12kw subscription which costs around 300 euros per year

despite the exceptionally low price of petroleum today, it is not a means of heating that has a future.
4000 liters at 0.8 euros, it's still 3200 euros

for the pellets, given your high energy consumption, it would take around 8 tonnes of pellets, or around 1700 euros
but you need space (basement?) to store 8 tonnes (storage volume of around 15m3)

in your mansion, you probably have fireplaces. why not convert one with a beautiful recent and efficient wood stove. there are some with all styles including old which would undoubtedly go with the style of the house.
that, coupled with an air-water heat pump seems to me an interesting mix.

[yann16]

Thank you for this precise and "calculated" answer ...

In the case of an air / water heat pump, many Internet users speak of a lack of reliability of certain machines. Hence my question, is this the magnifying and distorting effect of these forums which concentrate certain factual points of view, or an important reality to consider? ...

Depending on your points of view, which technologies (inverter or not, Jananese, German ...) are the most interesting (I know that you should not advertise, but good as for television, a lot of 3/5 brands is authorized .... see relevant ...)?

Is it necessary, to conclude my recovery, of the three-phase or of the mono (to know that I am in mono)?

[dirk pitt]

I will let the specialists answer for the advice on the brands but one thing is certain: the critical point whatever the brand is the correct sizing of the installation.
flee like the plague those who will tell you: you have to put this model, it will be fine, or else you have to take it bigger like that we are quiet, or else, I have a model in stock that would go well, I make you a price.

the more precise and serious the study of the dimensioning of your heat losses and the installation of heat pump (supported by figures) the better.
the bits of corner table calculations I gave you are far from the truth but they give you a starting point.
to see the seriousness of the proposal, a good test will be not to give the estimated consumption of fuel oil (moreover you cannot since you have not spent a winter) and to see how the installer estimates the consumption annual.

good luck.

[yann16]

To come back to the idea of ​​hot water tanks (I have 2 barns so enough to house a large container, and on the principle of the previous calculations, would it not be possible to couple thermal solar panels to these same tanks and during the night, either an oil boiler replacement, or as indicated previously a heating of the water electrically by taking advantage of the off-peak period. Is it realistic or totally excessive due to the amount of volume to be heated? Is financially equivalent or there also too expensive (I have 50 m2 of roof available south south / east and south south / west) ...?

[loop]

Hi Yann

Anything is possible, it's only a question of budget, free time, competence and motivation

Concerning the PAC consult this subject, you will have several opinions

https://www.econologie.com/forums/pompe-a-ch ... t6532.html

otherwise for existing installations the specialists are here

http://www.chaleurterre.com

The solar solution is obviously the one that most closely matches the criteria of sustainable development, after insulation.
It should also be a priority of choice for the regions that lend themselves to it. I think you are not too badly placed geographically.
For accumulators, they can be fitted with exchanger coils which will be connected later to solar collectors, if you wish to upgrade your installation. Placing accumulators in the home is a better choice, because of the losses which diffuse in the house and not outside.

A PAC installation costs around 15000 euros and can be subsidized at 50% (I have heard that it will not last)

A 2000L buffer tank with solar exchanger costs around 2000 Euros
For the installation of solar collectors, it is necessary to see in self-installation.
The reference site on the subject is here:

http://forum.apper-solaire.org


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