PHPP software for calculating passive houses

[Christophe]

The PHPP (like Passive House Planning Package or PassivHaus Projektierungs Paket) is to the "passive house" what two wheels are to the bicycle: it not only allows the home to be designed to ensure that it will respect very low consumption. energy sources sought, but in addition it is also the construction validation tool and which serves as a basis for the award of certification (Passivhaus Institut Darmstadt, Belgian Passive House Platform, La Maison Passive in France, etc. .)

The PHPP consists of software, easy to use since programmed in Microsoft Excel and a large manual, which is not large because the software is complicated, but because it allows the occasional description of the software to go over many practical aspects of "passive construction". So PHPP is much more of a "design tool" than a single program: it is a passive design support tool.

Software that is not strictly speaking a dynamic simulation tool, since it uses the monthly approximation method, has been validated conceptually by dynamic simulation and in practice by more than 200 constructions whose energy consumption has been combed over many years, which confirms by experience the accuracy of the results provided by the system.

The PHPP is "The" passive house tool par excellence. It is easier to use than dynamic simulation software (and faster in "virtualization" of the design). However, even if it is relatively simple, you still have to "enter" the construction correctly. Otherwise, the results may be disappointing.

The software is based on European standards, including EN 10077, EN 673, EN 410, EN 13790, etc.

Source Suite: http://www.lamaisonpassive.fr/spip/spip.php?article33

Example of a complete dimensioning: https://www.econologie.info/share/partag ... m6uCCH.pdf

[dedeleco]

Key points :

The outer insulation allows to place the load-bearing walls on the inner side and
therefore to reinforce the thermal inertia of the building. This is a source of comfort
for the inhabitants, because heavy walls regulate heat and humidity. In winter and
half-season, they are lit by the sun and accumulate their radiations for
broadcast in the evening. In the summer, if we ventilate well the house during the cool hours of
at night, these walls will restore this freshness during the day.

All the opaque parts of the building are
to isolate optimally. In principle, their
coefficient of heat transfer U must
not exceed 0,15 W / m²K but it is recommended
currently that this value reaches the 0,10
W / m²K. The diagram opposite shows us a
standard insulation based on cellulose and wood. For
comparison, the RT2005 imposes a maximum of
0,45 W / m²K and a reference value of 0,36
W / m²K for walls in contact with the outside.
The slab in contact with the ground has a
specific insulation in two parts. Walls
contact with the earth, like those in the cellar,
have a system of their own.
The insulating layer is very thick in order to be able to do without a system of
conventional heating, in general it is an thirty centimeters
for the walls, forty centimeters for the roof and twenty centimeters for the
paving slab. Natural insulators are preferred (hemp, hemp, linen, wood,
cork,…).
The characteristics of glazing are also
very important, indeed, the coefficient of
transmission U must not exceed 0,8
W / m²K which is much lower than the reference
RT2005 which is 1,8 W / m²K with a value
limit of 2,6 W / m²K. Given these
characteristics (see opposite) the triple glazing
is often used.

Air infiltration through the building envelope causes
Uncomfortable air currents and are more than detrimental to performance
Energy. A low air permeability of the house allows on the contrary a
reduction of heating consumption and prevention of damage due to
humidity, especially in wood frame houses.
The continuity of the airtightness must be carefully studied since the
stage of design, paying particular attention to the links between
elements, to the frames of bays and the penetrations (chimneys,
pipes, ..), the qualities of insulators, etc.

With insulation from the outside, the continuity of the insulation is, in general
well insured, only the thermal bridges to the right of a balcony are frequent. It is
why, it is preferable that the balconies have their own fixed support structure
to the facade, to limit the exchanges. Awnings and fixtures are to hang
also via suitable materials and little transmissible.


5000 kWh per year, in addition to the heat losses of the tank and the
piping, ie 1000 to 3000 kWh per year more. In order to limit these losses, it is
better to include the highly insulated water balloon in the insulating envelope.
The heating system must use renewable energies, such as
solar collectors for example. Note that around 80% passive houses
certified in Germany, Switzerland and Austria have such sensors.

The manufacturer VIESSMANN offers multi-energy combined systems, a
only device for domestic hot water, heating and ventilation.