Master's Thesis Zhaoyu Fu


Analysis and evaluation of primary energy saving requirements within green building programs

In this master thesis, the energy saving requirements within green building programs are analyzed
and evaluated.
Five green building programs from different regions of the world will be presented. These are BREEAM
from the United Kingdom, LEED from the United States, CASBEE from Japan, Green Star from
Australia and DGNB from Germany. The system variants, the sustainability aspects, the scoring and
the rating system are taken into consideration. A comparison is made for the certification systems
of BREEAM, LEED and DGNB with the possible use types, the number of projects as well as the
The certification systems LEED and DGNB are selected for the assessment of the energy requirements.
An assessment scheme is developed on the basis of the Lie Cycle Energy Analysis (LCEA).
The LEED and DGNB criteria are analyzed and evaluated by every life cycle phases according to
DIN EN 15978. The system boundaries for the assessment is determined by the system boundaries
of DIN EN 15978 and the systemboundaries of the criteria in LEEDandDGNB. The results showthat
the DGNB criteria for energy consumption assessment according to LCEA are better than those of
LEED. However, both certification systems do not cover the whole energy consumption throughout
the entire building’s life cycle.
The certification with theDGNB system is carried out for the new experimental building „Energieeffizientes
Bauen“ at RWTH Aachen University as a practical example.Within the scope of thismaster
thesis, the focus of the certification is on the criteria with energy requirements. On the basis of the
certification results, the potential for improvement will be discussed.