New Thermal Regulation 2005 (RT2005)

Tips, advice and tips to lower your consumption, processes or inventions as unconventional engines: the Stirling engine, for example. Patents improving combustion: water injection plasma treatment, ionization of the fuel or oxidizer.
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vttdechaine
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by vttdechaine » 16/05/07, 19:15

Targol wrote:
As you know, there are certain tried and tested recipes that make it very possible to limit the energy dependence of a home without costing the eye of the head.
  • Make small collective instead of individual
  • isolate appropriately from the outside (and not with inner doublings as is done in 98% of buildings in France)
  • Study the layout of the rooms to establish buffer areas in the North (cellar, garage) to isolate the rooms to live losses,
  • study the location of buildings based on climate and openings (I would like to know how many builders are asking the question of the orientation of windows and prevailing winds)

Yes yes I am aware of all this ... fortunately by the way. But it is precisely thanks to all these tricks of construction that one descends to 100. When I talk about 100 it's with a thoughtful construction ... not without.

In addition, there is a MAJOR element that you forget to take into account: if the cost price of a house depends a lot on its cost of construction, the importance of this initial cost decreases as time goes by. passes to give way to the cost of maintenance and operation. As, in general, one builds to live a certain time in the house, it can become very profitable even in relatively short term (5ans) to invest a little more in the construction to limit the recurrent charges.

Depreciate solar panels, a collective wood-fired boiler or a complete geothermal system over 5 years, I don't really believe in it. Also, saying to a buyer "spend more because later you will spend less" is very nice but very theoretical. Indeed, if your budget is € 250, you will not be able to put more money for the environment simply because you will not have it. We can tell you that there will be an economy at the end, it will be necessary to reduce elsewhere (surface for example) to be able to afford the panels and the rest.

vttdechaine wrote:I have long since stopped believing in Santa Claus or considering (even worse) that some have knowledge and others are unable to think and understand nothing.

I am impatiently awaiting your "magic formula" to go down to 50kW while remaining at a reasonable cost. I will enthusiastically apply your ideas and see if 100 kW is as outrageous as you say.


I think the poor investment / energy cost ratio of most homes is because most new individual builds are done by developers.
These, to reduce the costs of design, have a catalog of ready-made houses (designed there are 10aines of years and a little updated from time to time). However, the main specifications of these houses is to use standard techniques to save money on the implementation and to entrust it to any company.
When someone wants to buy a house, he chooses from the catalog and we arrange to "put" the house on the ground without looking too much at the orientation.

+1. Hence sometimes the denomination of "cardboard house" for these dwellings. All the developers, promoters, builders are not to be put in the same basket however.

In short, without believing in Santa Claus either, I think that we can at least lower by a third the consumption of this kind of dwelling WITHOUT CHARGE TO THE INVOICE only by designing them better, by changing the construction techniques and adapting them to their location.

+ 1. On the other hand, I do not think that these constructions are at present 100k but much more.


A little discussion with someone from ADEME the other day. If I have a reno operation that goes under the 100 k it is ok for a grant. So I say 50 ....
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Marty
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vttdechaine
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by vttdechaine » 16/05/07, 19:23

jean63 wrote:Yes, but how many housing estates are oriented "full North", I know one in my village where all the houses are like that. In addition no protection against cold winds because the ground is inclined + oriented to the North.

It is for this reason that it is oriented to the north. Who vowed to be in his stay nose down the slope? Most buyers do not check much before buying ...

and more people who build do it at a lower cost and builders / sellers of "turnkey" houses have only one goal: to earn a maximum of money on construction.

I know little company whose goal is to earn the least money possible : Lol: . It is undoubtedly for this reason that the regulations will have to be tightened to bring the manufacturers to the "good" level.

We should already educate people and builders to the idea of ​​a passive house that recovers maximum solar energy and protects itself from the cold from the North.

Yes, we must above all give the means to pay them.

If there was this culture in France, it would be good .......... but the subdivisions do not concern orientation but viabilisation: water, electricity, sewers ... and here is the job : Evil:

+1. It is true that most of the time it is managed in the "simplest" way. When I see large surfaces treated "waterproof" (asphalt for example) with small subdivisions (1 housing for 500 m² on the ground whereas a building is 1 housing for 4/5 times less), I tell myself that tablecloths will not recharge immediately ... :|

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toto65
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by toto65 » 21/07/07, 14:05

Hello everybody
About RT 2005, what training is required for people who perform thermal balances for the sale / purchase of a home. And since the beginning of July the rental.
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vttdechaine
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by vttdechaine » 22/07/07, 09:43

The energy performance diagnosis (EPD) is not directly related to the RT 2005.

When we move to the RT 2010, the DPE will always exist and probably will not have changed shape.

To answer the question all the same, it seems to me that the ministry should have given the list of those who were able to carry out this type of diagnosis knowing that training was compulsory. These trainings were "officially" provided since June-July 2006.

To know if the box to which you turn is entitled to make a DPE, the best is to ask them if they are assured for that.
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thermal regulation RT 2005




by AVEVA » 19/04/09, 16:11

Hello,
In a multi-family building and according to the ADEM
http://www.ademe.fr/particuliers/fiches ... n/rub4.htm

MECHANICAL VENTILATION

The techniques evolve since the generalization of the controlled mechanical ventilation, the VMC.

When replacing or installing ventilation in an existing dwelling, it is necessary to respect the thermal regulation in the existing one. It imposes a maximum consumption of 0, 25 Wh / m3 per fan.

Humidity-controlled VMCs see their air flow vary according to the indoor humidity, which ensures faster evacuation of very humid air while limiting wastage (ventilation adapted to the needs).

That's the Pb:
In an 1998 building equipped with humidity-sensitive vents, the VMC (HS) group motor and fan were changed to the same one as the previous 1100Wh.
The volume of air to be renewed is 2400M3 so the engine power should be at most 600Wh.
Is there an agency to enforce the regulations?
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Capt_Maloche
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by Capt_Maloche » 22/04/09, 23:04

Hello,

on a motor plate, it is the maximum power that is indicated, not necessarily the power actually used

What are the measured voltage and current measurements?

For the regulatory aspect of the RT2005 on existing buildings, only buildings with a building permit date prior to September 2006 and as part of heavy renovation work are concerned.

So, your building is not in this case, the maintenance intervention is not punishable, however, it would have been necessary to ask if it was possible to replace the entire motorcycle fan assembly, because the performance of 0.25W / m3 are often not achieved by the engine, but by the improved characteristics of the turbine
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"Consumption is similar to a search consolation, a way to fill a growing existential void. With, the key, a lot of frustration and a little guilt, increasing the environmental awareness." (Gérard Mermet)
OUCH, OUILLE, OUCH, AAHH! ^ _ ^
AVEVA
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by AVEVA » 23/04/09, 15:04

Thank you for your quick answers, and here are some details:

17 may 2007 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 31 text on 309
. .
Decrees, Orders, Circulars
GENERAL TEXTS

Ministry of Employment, Social Cohesion and Housing

Order of the 3 May 2007 relating to the thermal characteristics
and the energy performance of existing buildings

NOR: SOCU0751906A

17 may 2007 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 31 text on 309

. .
CHAPTER VI
Ventilation
Art. 36. - The ventilation aids installed or replaced in the living quarters must
have a maximum consumption of 0,25 Wh / m3 per fan, which can be increased to 0,4 Wh / m3 in the presence of F5 F9 filters. These two maximum consumption values ​​can be increased from 0,05 Wh / m3 per fan to 30 June 2009.

Observation: F5 to F9 filters are clean air filters (they do not concern our building)

The installed equipment is TCA model VCM 315 with vertical discharge.
The online catalog is that of 2007 at:
www.tca.fr/pdf/ventilCaissons.pdf 70 page

The aeraulic characteristics mention: useful power of the tree.
One of the questions I ask myself is: is it a maintenance operation?
the box (the tin box having been retained) or a replacement?
the motor and the fan have been changed.

At the general assembly I proposed that we should install a hygrostat from Aldès (Microwatt) which in my opinion would have reduced the consumption of 1100Wh to an average of about 400Wh, the device cost 2200 € would be depreciated in 4 years on the only consumption of the VMC (solution refused by the majority) what do you think of such a device that regulates the flow according to the pressure?

Heating is electric and consumption: 3500kWh / year for an 48m2 apartment inhabited below; above; on the sides does not seem very econological!
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boubka
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by boubka » 23/04/09, 17:19

3500 kw al year for 50 m2 only for heating or total conso?
anyway even if it is that for heating ca can
it does that 420 euro.
at home for 4 people 110 m2 house very well insulated gas heated (heating + ecs + cooking) it makes me from 1500 to 1700 annual euro
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boubka
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by boubka » 23/04/09, 17:25

if the heating is 70 kw / an / m2 c is very good for heating elec!
and if it's all confused it's even better
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AVEVA
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by AVEVA » 23/04/09, 18:20

In fact the consumption is not the Pb even if it is the total conso.

It must be said that the appart. is in Antibes oriented East-South East.

My preoccupation (oconological) is the waste of energy to run a fan that sucks so much that many co-owners have obstructed the mouths.

If my approach is accurate ie 400Wh are enough, the vmc consumes 0,7kWh x 8760h / an = 6000kWh too much what like me should make you jump!

The question still pending with a hygrostat would save well 600 or 700Wh and the provisions of the order 3 May 2008 apply.
How to enforce it?
If it is necessary to go to the TGI ... it is not tomorrow that Mr Borlot will reach his objectives.
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