Post on 10-Jan-2017
NEARLY ZERO ENERGYEXEMPLAR BUILDINGS
IRENA KONDRATENKO
Consultation Forum for Sustainable Energy
in the Defence and Security Sector
14th January 2016, Brussels
Directive 2010/31/EU (EPBD recast)
Article 2
“A building that has a
very high energy performance”
and
“The nearly zero or very low amount of
energy required should be covered to a
very significant extent by energy from
renewable sources, including energy from
renewable sources produced on-site or
nearby”.
Article 9
“Member States shall ensure that by
31 December 2020 all new buildings
are nearly zero-energy buildings;
and after 31 December 2018, new
buildings occupied and owned by
public authorities are nearly zero-
energy buildings”.
Member States shall furthermore “draw
up national plans for increasing the
number of nearly zero-energy buildings”
.. and
“following the leading example of the
public sector, develop policies and take
measures such as the setting of targets
in order to stimulate the transformation of
buildings that are refurbished into nearly
zero-energy buildings”.
NEW & DEEP RENOVATIONS
VARIETY OF FUNCTIONS & EU LOCATION
INSPIRATIONAL / LEADING EXAMPLES
(beyond current national building legislation)
LONGER TERM VISION (life cycle costs)
HIGHLY EFFICIENT
FACADE & TECHNICAL SOLUTIONS
(incl. renewables)
ATTENTION TO OPTIMIZED BUILDING
MANAGEMENT & USE
OPTIMIZED CONSTRUCTION & RENOVATION
PROCESS (prefabrication, new business models..)
FINANCING (higher upfront investment,
ESCO+EPC..)
LATEST TENDENCIES
UPSCALING: DISTRICT SOLUTIONS
(heating, cooling networks + renewables)
INTERACTION
(buildings + e-storage + smart grid
+ mobility + internet of things)
ENERGY PLUS BUILDINGS (exceed own demand)
Techniques:
Nigh time ventilation
High thermal mass
Ventilation with heat recovery
All installations in technical floor
Geothermal heat exchangers
Energy monitoring 5y
High energy performant facade
Very low heating & maintenance costs
User friendlyinstallations
1050m2 Solar thermalpanels + wood pellets + gas boiler
Energy monitoring (performance check vscalculated, includingindoor air quality)
COMMUNITY CENTRE
LUDESCH, AT
3135m2
Mixed function
Patio with semi-transparent BIPV (electricity + shadow)
Solar thermal panels (60m2, roof)
Timber structure
Technical room in the basement4 central ventilation groupsVentilation with heat recoveryAttention to indoor-air quality: relativehumidity sensors in rooms
External shading (prevention overheating)
1958-1966
First large-scale highlyenergy efficientrenovation (134 houses + show-house)
Heating demand: 25kWh/m2.y
User-occupied duringrenovation
Total renovation = 15days
Strong renovation processcoordination & communication
8903m2
Heating demand:
16kWh/m2.y
Primary energy
demand: 60kWh/m2.y
Concrete existing
construction
& new timber
prefabricated facade
+ interior improvements
(2 phases)
Very short time for
renovation
3526m2
Well insulated
perfabricated timber
facade modules
Biomass (pellets) & PV
Central mechanical
ventilation with heat
recovery
Heating demand
reduction:
160kWh/m2.y to
14kWh/m2.y
91% reduction
..highlights to successful NZEB
ENERGY EFFICIENCY FIRST PRINCIPLE !
then
RENEWABLES COVER MINIMIZED ENERGY DEMAND to
extend feasible
..highlights to successful NZEB
DECISIONS BASED ON LONG TERM VISION
ACHIEVING HIGH QUALITY REQUIRES OPTIMIZED
CONSTRUCTION PROCESS & COOPERATION
USE OF PREFABRICATION FOR
SHORTER ON-SITE WORKS