This dissertation is written as a part of the MSc in Energy Building Design at the International Hellenic University. The aim of this thesis is to present the optimization process
of different scenarios of the operation of mCCHP units (micro Combined Cooling Heating and Power units) which are located in urban areas. A wide range of system configurations is examined, from the traditional CCHP set up to the latest trends. In specific, a
group of different buildings is used and simulations are executed in order to decide over
the most efficient layout CCHP to address their electrical, heating (including domestic
hot water) and cooling energy needs. This group of buildings consists of two residential
detached buildings, one following the new regulation concerning the Greek energy building efficiency and one following the former one, a traditional multi-residential Greek
building, known as Polykatoikia, a school unit and an office building. This group of buildings is located in four different Greek cities and thus, be tested in four different climatic
conditions. The locations of Athens, Thessaloniki, Iraklion and Kastoria provide a deep
insight on the heavy impact that climatic conditions can have on the efficiency and the
optimal configuration of mCCHP systems. From an energy management point of view, a
full scope of energy coupling, cooling, heating and power, is examined against only energy efficiency and not against other factors as operational or installation costs, as these
parameters are changing significantly from country to country and constantly from time
to time. Finally, a short term scale is considered and not the full extent of systems lifetime
as it is assumed that from an energetic point of view, with a proper maintenance of the
system, the deterioration of system efficiency, within the proposed lifetime, is minimal.
At the same time, a lifetime evaluation of the system would include the aforementioned
financial parameters, which, as it was said earlier, are beyond the scope of this thesis.
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