The following questions were raised, which are representative of a search that we did in the referent network to this topic.
– If the stove or fireplace is the main installation type of heating How calculate its power and performance? ( in depending on the kg of material, its specific heat or combustion power, the capacity of the boiler or chamber of combustion, and of the combustion time, or based on what!? and how it would be done, please ) [consider the example of the typical mountain village houses that the only system of heating is a fireplace for the whole house (
– If the stove or fireplace is not the main mechanism What contribution associate? [typical single-family house in cold areas that It has its radiator system and at the same time a fireplace or stove that is used as support or as a substitution in the cold months of winter]
– If it is only for decoration but is Do you use it occasionally? In this case, it would be advisable to skip it?
– What type of installation would you would correspond, would it be a «Standard Boiler for Biomass»? Or how it should be contemplated in the program?
Based on the previous questions and considering to that it will be a critical point, and typical, the facilities of stoves or chimneys when we carry out the certificate energy mainly in a single-family home. Before the doubt in the energy certification report, we present the following answers obtained by various means.
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ANSWER LINKEDIN:
With the ce3x program once the envelope and consequently the energy demand of the home (which as you know is independent of the generator that you use), you have to parameterize the facilities for what which one and with the initial data that you write, I recommend follow the guidelines below:
* Generator 1/main: Select a team constant output type heating only and as renewable biomass fuel (firewood = biomass). With respect to seasonal performance of this generator, in the case of wood stoves I have doubts since they haven't been for 10 years I prescribe none, but I can tell you that it is surely very less than 75%.
1. – Generator 2/Support: Regarding the Electro-convector selects a type heating only equipment Joule effect and as a fuel type Electricity.
1. – Generator 3/ DHW: As DHW only generator I imagine that they used an electric thermos for which it proceeds as in point 2.
Lastly, and in the absence of data on the power of the generators, you only have to establish the percentage of demand covered by each generator and type of service (heating/ACS).
If the Electro-convector is low power and/or localized use, you can define a zone inside the house (eg: living room) and cover a % of the area with Generator nº 1 and the rest with number 2.
For a distribution of demands based on the installed thermal power can be used as a criterion that in the plain of alavesa an isolated house of discontinuous use may need an installed power of the order of 150 w/m2.
If you need thermal power data from the generator 1, pull manufacturers (Ergom, etc.) and perform a volumetric equivalence depending on the dimensions of the home where firewood is burned.
ANSWER IDAE:
The criteria for carrying out the certificate of energy efficiency of the building must be established by the certifying technician as long as it does not contravene what is dictated in the Royal Decree of obligatory compliance.
In the same way, the criteria of the competent body of each Autonomous Community responsible for their registration. Therefore, we indicate to contact said Community body Autonomous.
However, we recommend that you refer to the manuals of the CE3 and CE3X programs that you can download in the following link from the Ministry of Industry, Energy and Tourism:
ANSWER EFINOVA: (We think it's the most sensible, they're those who have done the CE3X)
It's an important question and really who has jurisdiction in the matter is the competent body of the Autonomous Community, so we recommend that you send the Ask that body.
This situation is not specifically contemplated in the certification procedures because it was not at Calener. From our criteria:
* We think they should be introduced as standard boilers of biomass. Actually the data of the installation will not have an influence on global emissions and therefore on the rating because the consumption step coefficient of final energy to biomass emissions is zero.
* If it is only used occasionally, I think it would be best not to include it. In this way, the certifying technician is being conservative and they can't put him in trouble.
We hope it will be helpful for Certifying Technicians in their reports and qualifications before the daily work.
