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Designs 2018, 2(3), 34;

Financial and Energetic Optimization of Greek Buildings Insulation

Thermal Department, School of Mechanical Engineering, National Technical University of Athens, 15780 Athens, Greece
Author to whom correspondence should be addressed.
Received: 30 August 2018 / Revised: 12 September 2018 / Accepted: 14 September 2018 / Published: 17 September 2018
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The most important parameter in the design of the building envelope is the insulation thickness, because it dramatically influences the heating and cooling loads. The objective of this study is the investigation of different insulation scenarios for the four climate zones of Greece and, more specifically, the cities Heraklion, Athens, Thessaloniki, and Florina. The insulation thickness is examined up to 8 cm and the optimum thickness is determined by the minimization of the simple payback period in order to design a cost-effective system. Moreover, the primary energy consumption, the heating/cooling loads, and the equivalent CO2 emissions are calculated. Furthermore, a multi-objective evaluation procedure of the various insulated scenarios is conducted in order to show the relationship between the energetic and the financial optimization. Generally, it is found that the optimum insulation thickness is around 4 cm for all the climate zones using financial criteria, while the energy criteria indicate higher thicknesses. These results can be applied to the suitable design of Greek residential buildings. View Full-Text
Keywords: space heating; cooling; KENAK; building thermal behavior; primary energy consumption space heating; cooling; KENAK; building thermal behavior; primary energy consumption

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Mitsopoulos, G.; Bellos, E.; Tzivanidis, C. Financial and Energetic Optimization of Greek Buildings Insulation. Designs 2018, 2, 34.

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