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ZEB
annual report 2015
research work and previous pilot projects,
EPDs, and the LCA database Ecoinvent.
Greenhouse gas emissions have been
reduced by over 50 % compared to what is
found in a standard reference building.
The building will be constructed with solid
wood as a primary building material. The
exterior walls will be made up of prefabricated
elements with solid wood and insulation
from locally produced and renewable wood
fibre. The solid wood elements have been
developed in collaboration with the Massivlust
Company.
To enable evaluation of alternative design
solutions for the various building components,
a matrix was drawn up which provides an
overview of the structure, cost, greenhouse
gas emissions, and requirements for building
physics, acoustics, and fire. This has allowed
continuous consideration of potential solutions
and options and their greenhouse gas
emissions.
The greenhouse gas emissions from the
transport of building materials, transport of
personnel, earthworks and other construction
works (construction machinery, building
electricity, building drying, barracks, etc.) have
been estimated based on the contractor’s
existing experience and experience with ZEB
pilot projects.
Ventilation
The building will have a hybrid ventilation
system consisting primarily of natural
ventilation through windows in summer and
mechanically balanced ventilation with heat
recovery in winter. The plant will have minimal
complexity due to a minimum of control
devices. The aim is to optimize the building
-‐20000,00
-‐15000,00
-‐10000,00
-‐5000,00
0,00
5000,00
10000,00
15000,00
20000,00
-‐20 000
-‐15 000
-‐10 000
-‐5 000
0
5 000
10 000
15 000
20 000
Alterna(ve 1: PV-‐panels high
efficiency
Alterna(ve 2: PV-‐panels high
efficiency
Alterna(ve 3: PV-‐panels lower
eff./recycled
Alterna(ve 4*: CHP, gasifica(on
kg CO2-‐eq. per annum
Emission reduc3on electricity (self-‐consump3on & export)
Emission reduc3on hea3ng (self-‐consump3on & export)
Emissions construc3on phase ( C )
Emissions building materials ( Mb )
Emissions building services, materials ( Mt )
Emissions energy use el.-‐specific incl. plug loads ( Oel )
Emissions energy use hea3ng * ( Ov )
Emissions CHP+gasifica3on+fuel
Emissions PV-‐panels, materials
Sum ZEB-‐COM
The figure illustrates the total greenhouse gas emissions for four alternative energy solutions. All the solutions meet the objective of
compensating for emissions from the construction phase, the production and transportation of materials, and the operation of the building
(ZEB-COM). Source: Asplan Viak.