This dissertation was written as a part of the MSc in Energy Systems at the
International Hellenic University. It focuses on the environmental performance of
energy systems that are used in residential buildings, using the life cycle analysis (LCA)
method. The analysis includes production, disposal and transportation of the materials
used for the manufacturing processes of those systems. The scope of this study is to
collect all common used residential energy systems (heating, cooling, hot water and
electricity production) and analyze and compare their environmental performance.
The continuously growing sustainable development and the direction towards such
policies is the motivation for such studies.
The CML 2 baseline 2000 assessment method (includes ten environmental impact
categories) is used for the evaluation of the systems’ performance and it is applied by
the use of the SimaPro 7 LCA software. The data needed for the analysis is taken from
previous studies, industrial reports and the Ecoinvent database if no other source is
available. The systems assessed are the oil fired and gas fired boiler, the split unit air
conditioner, the mono-Si and poly-Si residential PVs, the flat plate and evacuated tube
solar collectors and the auxiliaries of all those systems. Finally the results are applied in
a real residential building (a four storey apartment building in Thessaloniki) and the
systems are evaluated based on several different scenarios taking into account even
their operation phase.
It was a great pleasure for me the occupation with such an interesting and up-to-date
subject, which may be a great step for the environmental imprinting of the buildings as
a whole. Finally, for the whole cooperation and assistance in all sectors of my study I
want to extremely thank my supervisor Dr. Dimitrio Anastaselo.
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