Page 21 - ZEB AnnualReport 2015

research work and previous pilot projects, To enable evaluation of alternative design electricity, building drying, barracks, etc.) have
EPDs, and the LCA database Ecoinvent. solutions for the various building components, been estimated based on the contractor’s
Greenhouse gas emissions have been a matrix was drawn up which provides an existing experience and experience with ZEB
reduced by over 50 % compared to what is overview of the structure, cost, greenhouse pilot projects.
found in a standard reference building. gas emissions, and requirements for building
physics, acoustics, and ire. This has allowed Ventilation
The building will be constructed with solid continuous consideration of potential solutions
wood as a primary building material. The and options and their greenhouse gas The building will have a hybrid ventilation
exterior walls will be made up of prefabricated emissions. system consisting primarily of natural
elements with solid wood and insulation ventilation through windows in summer and
from locally produced and renewable wood The greenhouse gas emissions from the mechanically balanced ventilation with heat
ibre. The solid wood elements have been transport of building materials, transport of recovery in winter. The plant will have minimal
developed in collaboration with the Massivlust personnel, earthworks and other construction complexity due to a minimum of control
Company. works (construction machinery, building devices. The aim is to optimize the building

Alterna(ve 1: PV‐panels high Alterna(ve 2: PV‐panels high Alterna(ve 3: PV‐panels lower
efficiency efficiency eff./recycled Alterna(ve 4*: CHP, gasifica(on
20 000 20 000,00

15 000 15 000,00

10 000 10 000,00
kg CO2‐eq. per annum 5 000 0 5 000,00

0,00

‐5 000
‐5 000,00
‐10 000 ‐10 000,00

‐15 000 ‐15 000,00

‐20 000 ‐20 000,00
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 igure 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.

ZEB annual report 2015 21