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by Christine » 29/10/08, 13:41

Of course, but that does not answer the question: does heating only with a wood stove comply with RT2005?

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by Capt_Maloche » 29/10/08, 14:31

It is a building that conforms, with its heating system, since energy consumption is done on primary energy consumed

Sure that if the said wood stove has a 20% efficiency (like an open fireplace) your primary energy consumption will be multiplied by 5

Now wood is considered renewable, but there's no reason to waste it

RT2005 wrote:The overall energy consumption for heating, domestic hot water and cooling must not exceed 110kWh / m2 SHON* / year if you use fossil fuel and around 74 kWh / m2 SHON / year if you use electric heating (including heat pumps).
* kiloWatts hour per square meter of net surface area


Basically, waste is prohibited (logical) and these values ​​will be reduced by 20% every 5 years until 2020
or about 110 -20% = 88 kWh / m2 in 2010
88 -20% = 70 kWh / m2 in 2015
70 -20% = 55 kWh / m2 in 2020 (the famous 50 kWh / m2)
Last edited by Capt_Maloche the 29 / 10 / 08, 14: 44, 1 edited once.
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by Capt_Maloche » 29/10/08, 14:38

TITLE III
MINIMUM THERMAL CHARACTERISTICS
CHAPTER I
Thermal insulation

Art. 38. - Each wall of a room heated or considered as such, the area of ​​which is greater than or equal
0,5 square meters, facing outside, on a volume that is not heated or is in contact with the ground, must have
a heat transfer coefficient U, expressed in W / (m2.K), less than or equal to the maximum value
given in the following table.
The following are excluded from these requirements:
- canopies;
- display cases and bay windows with a particular function (explosion-proof, burglar-proof,
smoke extraction);
- fully glazed entrance doors giving access to premises open to the public;
- skylights, smoke vents and firefighters;
- translucent glass block walls;
- roofs provided for vehicle traffic.

WALLS COEFFICIENT U MAXIMAL
Walls in contact with the outside or with the ground ....................................... .................................................. ................................... 0,45
Walls in contact with an unheated space .......................................... .................................................. .................................. 0,45 / b (*)
Low floors overlooking the exterior or on a collective car park ...................................... .................................................. .. 0,36
Low floors overlooking a crawl space or an unheated space ..................................... ............................... 0,40
High concrete or masonry floors, and waterproof metal sheet roofs .................................... ......... 0,34
High floors covered with metal sheets ........................................... .................................................. ....................... 0,41
Other high floors ............................................... .................................................. .................................................. ........................ 0,28
Windows and patio doors taken bare to the outside ...................................... .................................................. ...... 2,60
25 may 2006 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 14 text on 155
. .
WALLS COEFFICIENT U MAXIMAL
Curtain fronts ................................................ .................................................. .................................................. .................................... 2,60
Roller shutter boxes .............................................. .................................................. .................................................. ................... 3,0
(*) b being the reduction coefficient of losses to unheated volumes, defined in the Ubât calculation method.
In a detached house, the maximum coefficient for each type of wall in the previous table can be
plus:
0,1 W / (m2.K) for a maximum surface of 5% of the opaque walls of the same type facing the outside;
0,1 W / (m2.K) for a maximum surface area of ​​10% of all windows and French doors.
The maximum U coefficient taken into account for windows and French windows is that corresponding to the
vertical position.
The floors on the median level of rooms heated or considered as such must be insulated at least
their entire periphery by an insulation with a thermal resistance greater than or equal to 1,7 m2.K / W:
- for pavements of surface greater than or equal to 500 square meters and pavements of industrial buildings,
if the insulation is placed on the periphery, it can be placed vertically over a minimum height of 0,5
metre ;
- for other pavements, if the insulation is horizontal or vertical, its minimum width or height is
1,20 meters.
Art. 39. - The coefficient of losses through the walls and openings of the building (Ubât) cannot exceed
maximum coefficient of basic losses through the walls and bays of the building, noted “Ubât-max” determined
according to the use of the building and the coefficient of basic losses by the walls and the bays of the building, noted
"Ubât-base":
- individual houses: Ubât-max = Ubât-base × 1,20;
- other residential buildings: Ubât-max = Ubât-base × 1,25;
- other buildings: Ubât-max = Ubât-base × 1,50.
The Ubât-base coefficient is calculated according to the formula in article 16 but without taking into account the values ​​of
reference of bay surfaces defined in article 12. Bay surfaces, opaque walls and shelves
are therefore those of the project.
Art. 40. - The walls separating parts of buildings for residential use from parts of buildings for
other than residential must have a coefficient of thermal transmission U of the wall which cannot
exceed 0,50 W / (m2.K) in average value.
Art. 41. - The average linear thermal transmission coefficient of the thermal bridge due to the bond of
two walls, at least one of which is in contact with the outside, may not exceed the values ​​indicated below:
- for individual houses: 0,65 W / (mK).
However, this value is brought to 0,75 W / (mK) until December 31, 2007;
- for other buildings for residential use: 1,0 W / (mK);
- for buildings for other than residential use: 1,2 W / (mK);
However, this value is brought to 1,35 W / (mK) until December 31, 2007, and, for connections with
high floors based on ribbed metal sheets, at 2 W / (mK) until December 31, 2006.
The values ​​to be considered are the means weighted by the lengths for each of the linear L8, L9 and L10.

CHAPTER II
Summer comfort

Art. 42. - In any room intended for sleep and category CE1, the solar factor of the windows must be
less than or equal to the reference solar factor defined in the table in article 18. A zero value
corresponds to a prohibited situation.
Art. 43. - Unless the rules of hygiene or safety prohibit it, the bays of the same room other than
temporary occupancy and CE1 category must be able to open on at least 30% of their total area.
This limit is reduced to 10% in the case of premises for which the difference in altitude between the point
bottom of its lowest opening and the highest point of its highest opening is equal to or greater than
4 meters.
25 may 2006 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 14 text on 155
. .
CHAPTER III
Ventilation

Art. 44. - When humidification of the blown air is planned during the heating period, a device
automatic must be able to set the humidification to a level which corresponds to an absolute humidity of the air
blown less than or equal to 5 grams per kilogram of dry air.
Art. 45. - In the case of a building for use other than residential use, the ventilation of the premises or groups of
premises with clearly different occupations, uses or pollutant emissions must be ensured
by independent systems.
Art. 46. ​​- In the case of an area for use other than residential use, the specific mechanized systems for
ventilation must be fitted with devices allowing, during heating and cooling,
limit the flows to the minimum values ​​resulting from hygiene regulations for the periods when the area is
unoccupied.
Art. 47. - In the case of a building for non-residential use equipped with mechanized systems
specific ventilation, any device for manually modifying the air flow rates of a room must be
timed.
Art. 48. - Space cooling systems by increasing flow rates beyond those required
for hygienic purposes must be fitted with devices which prevent this increase when the
heating works.
Art. 49. - The ventilation networks are isolated in the following cases:
- for heated or cooled supply air networks, in the parts located between the heating device
or cooling and the limit of the room where the blowing takes place, with the exception of the part located between the
room and the regulating device for cold air networks. For supply air networks only
insulation is only required if the supply air is heated to a temperature higher than the
conservation temperature ;
- for supply or return air networks with recovery or recycling device, in the parts
located outside the heated space and between the recovery or recycling device and the limit
heated areas of the building.
For the parts of ducts located inside heated rooms and which must be insulated, the resistance
thermal is greater than or equal to 0,6 m2K / W.
For the parts of ducts located outside of heated rooms and which must be insulated, the resistance
thermal is greater than or equal to the following two values: 1,2 m2K / W and the Acondext / ratio (0,025.Ap) where:
Acondext is the area in square meters of the exterior conduits to be insulated;
Ap is the sum of the surfaces of the exterior walls taken into account for the calculation of Ubât-ref.
Art. 50. - Fresh air preheating equipment must be fitted with a device stopping their
operation outside the heating period.

CHAPTER IV
Heating

Art. 51. - Gaseous fuel generators providing heating must not have a pilot burner.
permanent.
Art. 52. - 1. General case:
Subject to the provisions of article 54, a heating installation must include per room served
one or more manual stop and automatic adjustment devices depending on the interior temperature of
this room.
However, when the heating is provided by a hot water heating floor operating at low
temperature, this device can be common to premises with a maximum total area of ​​150 square meters.
2. Additional provisions in the case of Joule effect transmitters:
The regulation device for Joule effect heating emitters must lead to an amplitude of
maximum regulation of 0,5 K and a maximum load drift of 1,5 K. These values ​​are increased to 1 K and
2,5 K for wall-mounted transmitters, storage heaters and "fan coils"
two sons ".
Unless the transmitter provides, in conjunction with that of the heating, a cooling function, its device
must also allow the reception of remote control commands to ensure operation in
comfort, reduced, frost and shutdown.
Art. 53. - 1. Case of Joule effect transmitters:
25 may 2006 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 14 text on 155
. .
Subject to the provisions of article 54, if the heating is provided by electrical appliances
independent and if the area heated from a single heating energy delivery point of
the installation exceeds 400 square meters and includes several rooms, the power supply for these devices
must be adjusted automatically according to the outside temperature.
The same device can serve at most an area of ​​5 square meters. However such a device
is not compulsory if the heating is automatically stopped when one of the doors is opened.
2. Case of the other systems:
Subject to the provisions of article 54, if the heating is provided by transmitters connected to a
central heat generation serving an area of ​​more than 400 square meters comprising several
local, it must include, in addition to the devices provided above, one or more central devices
automatic regulation of the heat supply, which depends at least on the outside temperature. A
same device can serve at most an area of ​​5 square meters.
This requirement does not apply in residential buildings if the distribution network serves both
heating and decentralized domestic hot water production.
Art. 54. - For mixed heating installations, articles 52 and 53 do not apply to heating
basic which must include, whatever the surface served, one or more adjustment devices
automatic depending at least on the outside temperature.
In the case where, from a central generation, we supply equipment used for both heating
and domestic hot water, the obligation described in article 53-2 only applies if the area served
from this equipment is more than 400 square meters and has several premises.
Art. 55. - Any heating installation serving premises with discontinuous occupancy must include
a manual control and automatic programming device at least by a clock allowing:
- a supply of heat according to the following four paces: comfort, reduced, frost and shutdown;
- automatic switching between these gaits.
When switching between two stages, the heating power must be zero or maximum so
to minimize the durations of the transition phases.
Such a device can only be common to premises with similar occupancy times. A
same device can serve at most an area of ​​5 square meters.
Art. 56. - Heating water distribution networks located outdoors or in unheated premises
are fitted with insulation which corresponds to a loss coefficient, expressed in W / (mK), less than or equal to
2,6.d + 0,2, where d is the outside diameter of the tube without insulation, expressed in meters.
Water distribution networks must have a balancing member at the bottom of each column.
Art. 57. - The pumps of heating installations must be fitted with a device allowing them to be stopped
outside the heating season.

CHAPTER V
Hot water

Art. 58. - For electric storage water heaters, the maximum losses Qpr expressed in kWh
per 24 hours within the meaning of standards NF EN 60 335-1 and NF EN 60 335-2-21 are as follows:
V water heater less than 75 liters: 0,147 4 + 0,071 9 V2 / 3;
Horizontal water heater of V greater than or equal to 75 liters: 0,939 + 0,010 4 V;
Vertical water heater of V greater than or equal to 75 liters: 0,224 + 0,066 3 V2 / 3,
where V is the storage capacity of the balloon in liters.
Art. 59. - Gas accumulators and heaters must have thermal performance at least
equal to European standards: EN 89 for gas accumulators and EN 26 for space heaters
instant production.
Art. 60. - The storage tanks of prefabricated solar water heaters must have a coefficient of
heat losses UA expressed in W / K less than 0,16 V1 / 2, where V is the nominal storage volume of the
water heater expressed in liters.
Art. 61. - The temperature-maintained parts of the domestic hot water distribution are insulated
by an insulation whose loss coefficient, expressed in W / mK, is at most equal to 3,3.d + 0,22, where d is the
outside diameter of the tube without insulation, expressed in meters.

CHAPTER VI
Room lighting

Art. 62. - This chapter applies to buildings referred to in article R. 111-20 of the housing code and
of construction, excluding those mentioned in article R. 111-1.
25 may 2006 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 14 text on 155
. .
Art. 63. - Any room in which the occupant (s) can act on the lighting control must
have at least one of the following devices:
- an extinguishing device at each exit from the room;
- a device, possibly timed, automatically switching off the lighting when the room is empty;
- a manual remote control allowing switching off from each workstation.
Art. 64. - Any room whose lighting control is the responsibility of its management staff, even
during periods of occupation, must include a device for switching the lighting on and off.
If this device is not located in the room in question, it should then make it possible to view the state of the lighting
in this room from the place of order.
Art. 65. - In premises with several uses requiring very different lighting levels for
at least two uses such as in particular sports premises and multipurpose rooms, a device must
reserve to authorized persons the switching on of the lighting above the basic level.
Art. 66. - In the same room, artificially lit points which are placed less than 5 meters
of a bay must be ordered separately from the other lighting points as soon as the total power
installed in each of these positions is greater than 200 W.
Art. 67. - When natural lighting is sufficient, artificial lighting must not be switched on
automatically, in particular by a clock or a presence detection device.

CHAPTER VII
Cooling

Art. 68. - In the case of buildings for use other than residential use, the cooled premises must be provided
specific ventilation devices.
Art. 69. - Access doors to a cooled area for use other than residential use must be fitted with a
device ensuring their closure after passage.
Art. 70. - The pumps of cooling installations must be fitted with devices allowing
their stop.
Art. 71. - A cooling installation must include, per room served, one or more devices
manual shutdown and automatic adjustment of the cold supply according to the interior temperature.
However:
- when the cold is supplied by a variable air flow system, this device may be common to
premises with a maximum total area of ​​100 square meters provided that the regulation of the blown flow
total is done without increasing the pressure drop;
- when the cold is provided by a cooling floor, this device can be common to premises
with a maximum total area of ​​150 square meters;
- for “two-pipe cold only fan coil” systems, the obligation in the first paragraph is
considered satisfied when each fan is locked to the indoor temperature and the
production and distribution of cold water are provided with a device allowing their programming;
- for residential and accommodation buildings cooled by cooling fresh air without
increase in the flows treated beyond twice the hygiene needs, the obligation of the first paragraph is
considered satisfied if the supply of cold is, on the one hand, regulated at least according to the
return air temperature and outside temperature and, on the other hand, is prohibited during
heater.
Art. 72. - Before final emission in the room, except in the case where the heating is obtained by recovery
on the production of cold, the air cannot be heated then cooled, or cooled then heated, by devices
using energy and intended by design for heating or cooling air.

CHAPTER VIII
Consumption monitoring

Art. 73. - For buildings for non-residential use, if the heated surface exceeds 400 meters
square, one or more devices must make it possible to monitor the operating time of each of the power stations
ventilation system.
Art. 74. - For buildings for non-residential use, if the heated surface exceeds 400 meters
square, one or more devices must make it possible to monitor heating consumption, possibly
confused with those of domestic hot water, and measure the interior temperature of at least one room per
part of the heating distribution network.
Art. 75. - If a building has premises or a set of premises intended to accommodate more than 40 beds
or intended to serve more than 200 meals a day, one or more devices must make it possible to monitor
volume or heat consumption of domestic hot water from centralized equipment.
25 may 2006 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 14 text on 155
. .
Art. 76. - If the illuminated surface exceeds 1 square meters, one or more devices must allow
monitor lighting consumption.
Art. 77. - For buildings for non-residential use, if the cooled surface exceeds 400 meters
square, one or more devices must make it possible to monitor the cooling consumption and measure the
interior temperature of at least one room per part of the distribution network
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by Christophe » 29/10/08, 14:40

Christine wrote:Of course, but that does not answer the question: does heating only with a wood stove comply with RT2005?

Happy family Image


Not just like a passive house apparently ... Silly but true.

Well I think there is a "double subject" in the air: https://www.econologie.com/forums/post102627.html#102627
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by Woodcutter » 29/10/08, 14:42

Christine wrote:Well, I don't know anything about building, but I did some research and here is the text (I will give you the details) published in the OJ concerning the RT2005.
It appears that the heating system is well taken into account. For wood heating, see article 26 (page 8):
For solid fuel generators using wood as energy, the reference system is
consisting of a PCI efficiency generator at full load as a percentage, for an average temperature of
the water in the generator of 70 oC, of ​​47 + 6.logPn for a nominal power Pn less than or equal to 400 kW
and 62,6 beyond.


For the conclusions and comments, I leave it to you .... good luck
: Cheesy:
Source: (the direct link with the Olympic Games does not work so here is another site) http://www.rt-batiment.fr/fileadmin/doc ... i_2006.pdf

PS: I notice all the same that they speak of the T ° of the water, therefore pt only of wood boiler? What would de facto exclude stoves?
I too rummaged in the decree of May 24, 2006 (which I have had in my computer for a while) but it quickly fed me ...

What I can say about article 26 is that it also talks about heat pumps and requests a minimum corrected COP of 2.45, but heat pumps are most of the time used to heat air (like a stove, somehow) and not water ...

We can also note that: For other systems excluding those defined in article 25, (NDM: Joule effect heating) the reference generator is a
liquid or gaseous fuel boiler.

This sentence could relate to wood stoves, but what does that mean exactly?

Lastly, it will be noted that this decree includes appendices, of which IV and V concern study files for "technical solutions" and for "special cases", to be submitted to the concerned ministry ...

It would surprise me very much that a file concerning a very well insulated house does not pass under these conditions ... It may just be that the BE does not want to 'annoy, quite stupidly!
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by Christophe » 29/10/08, 14:43

Capt_Maloche wrote:
RT2005 wrote:The overall energy consumption for heating, domestic hot water and cooling must not exceed 110kWh / m2 SHON* / year if you use fossil fuel and around 74 kWh / m2 SHON / year if you use electric heating (including heat pumps).
* kiloWatts hour per square meter of net surface area


So 74, for me it's full pipo! We don't find the coef. 2,58 between kWh EP and kWh electric ... Are you sure that a number is not missing? Like a 2..to make 274?

Image

ps: don't you think we should summarize all this on a subject dedicated to RT or rather to RT?
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by Capt_Maloche » 29/10/08, 14:50

It is taken from a booklet of Ademe, but indeed it must miss the ratio of 2.58, EH look at your table 190 / 2.58 = 74 cqfd!

Basically, waste is prohibited (logical) and these values ​​will be reduced by 20% every 5 years until 2020
or about 110 -20% = 88 kWh / m2 in 2010
88 -20% = 70 kWh / m2 in 2015
70 -20% = 55 kWh / m2 in 2020 (the famous 50 kWh / m2)
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by Christophe » 29/10/08, 15:02

Capt_Maloche wrote:It is taken from a booklet of Ademe, but indeed it must miss the ratio of 2.58, EH look at your table 190 / 2.58 = 74 cqfd!


Ah yes well seen ... except that it is necessary to specify kWh electric then next to the 74 ... otherwise we are not comparing the same thing ... so for a doc of the ademe ... PAAAAAAAAAAAS BIEENNNNNNN! Especially that we do not speak in kWh oil!

Capt_Maloche wrote:(the famous 50 kWh / m2)


This limit still makes me smile because the "limit" to heating is not clear. Indeed; any electrical appliance contributes to heating (more or less it is not you who will contradict me Maloche eh !?) and therefore by including electricity of the type "indirect heating" it is very very difficult to achieve this value!

Example: my only PC used as a professional is already 1100 kWh EP per year! So if I lived in a 22m² studio I would already be at 50 kWh EP / m².an just with MY PC ...
https://www.econologie.com/forums/suivi-de-c ... t6154.html

ps: I "always" wondered if 100% of the watts consumed by a pc went into heat ... an opinion?
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by Christine » 29/10/08, 15:18

Woodcutter wrote: PACs are used most of the time to heat air (like a stove, in a way) and not water ...


I think it is heating water (wood boiler) and it is consistent.

Woodcutter wrote: We can also note that: For other systems excluding those defined in article 25, (NDM: Joule effect heating) the reference generator is a
liquid or gaseous fuel boiler.

This sentence could relate to wood stoves, but what does that mean exactly?


I think that means that the performances must be the same as those given for generators with liquid or gaseous fuels, that is to say:

For liquid or gaseous fuel generators, the reference system has the characteristics
following:
- the nominal heating powers Pn, expressed in kW, are those used for the calculation of Cep;
- the minimum operating temperature is that of a low-temperature boiler within the meaning of
Th-CE calculation method;
- performances are given below:
Image

In this case indeed, it is not the stove itself that would be problematic, but its performance. It would seem more logical and in the spirit of the text.

Anyway, I repeat that I have no technical skills but I have good comprehension skills :|
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by Woodcutter » 29/10/08, 15:30

Christine wrote:[...]
Woodcutter wrote: We can also note that: For other systems excluding those defined in article 25, (NDM: Joule effect heating) the reference generator is a
liquid or gaseous fuel boiler.

This sentence could relate to wood stoves, but what does that mean exactly?


I think that means that the performances must be the same as those given for generators with liquid or gaseous fuels, that is to say:

For liquid or gaseous fuel generators, the reference system has the characteristics
following:
- the nominal heating powers Pn, expressed in kW, are those used for the calculation of Cep;
- the minimum operating temperature is that of a low-temperature boiler within the meaning of
Th-CE calculation method;
- performances are given below:
Image

In this case indeed, it is not the stove itself that would be problematic, but its performance. It would seem more logical and in the spirit of the text.

Anyway, I repeat that I have no technical skills but I have good comprehension skills :|
Mwoui ... it's surprising because wood stoves with yields around 89%, it exists it seems to me, right?
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