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ZEB
annual report 2015
The annual energy production, by using an
appropriate PV technology, could reach 146
kWh/m
2
, while the operational energy use
could reach 75kWh/m
2
for the whole building
complex. This amount of energy makes it
possible to cover approximately twice the
operational energy demand of the entire
neighbourhood.
To determine the ZEB level of the project, a
comparison between the CO
2
emissions from
materials and operational energy use and
the energy produced, was carried out. For
the conversion of energy use and production
from kWh to kgCO
2
eq, the ZEB factor, 0.132
kgCO
2
eq, was used. The total CO
2
emissions
from the materials and operational energy
were calculated to be 19.23 kgCO
2
eq/m
2
BRA/
year, and energy production was calculated to
compensate for 19.36 kgCO
2
eq/m
2
BRA/year
(Figure1). Therefore, the ZEB-OM level was
achieved.
The main purpose of the work was to define
how energy efficiency and on-site renewable
energy production can be implemented in
the design of a housing development, as
well as to what extent these strategies can
impact the energy and CO
2
balance. The
site is developed based on the concept of an
eco-city as a sustainable urban form, thus
emphasizing the reduction of the ecological
footprint.
In conclusion, the integration of overall
energy strategies can effectively reduce the
ecological footprint of a housing development.
Nevertheless, to be able to recommend the
implementation of those strategies, further
research and follow-up should be done to
acquire more quantitative data.
Bruk av solenergisystemer som produserer
energi som dekker bygningenes behov
for energi, blir stadig viktigere, både på
bygningsnivå og på områdenivå. Men, til
tross for at det er tilstrekkelig solstråling, i
hvert fall i de sørlige og midtre deler av landet
(årlig innstråling i Grimstad er f.eks. ca. 900
kWh/m
2
), er bruk av solenergi ennå ikke
spesielt utbredt i Norge. Det er derfor viktig
å vurdere både energibehov og mulighetene
for Integrering av solenergisystemer i tak og
fasader tidlig i en planprosess.
Den stadig voksende befolkningen i
Trondheim har resultert I et økende behov for
boliger. Statistisk Sentralbyrå (SSB) har antatt
at fra 2000 til 2030 vil byen vokse med 70 000
innbyggere. I lys av dette har området Øvre
Rotvoll, som forbinder Trondheim sentrum
med Charlottenlund og Ranheim, et mål om
å utvikles som et null-energi boligområde.
Studien beskrevet under er del av delprosjekt
C,
“Case studies and action research”
, i Task
Table 1. Comparison of the properties and values for optimized and initial volumes (shown as vertical sections) for each orientation.