Solar Thermal Systems for Zero-Energy Buildings: Perspectives and Challenges

Abstract

The implementation of energy-efficiency measures as well as the integration of renewable energy systems, on the move towards the zero (or nearly zero)-energy building is certainly a challenging task. This is even more the case, when buildings are to operate in conditions with increased cooling demand, as it happens in the Eastern Mediterranean, the Middle East and North Africa. The aim of a zero-energy building cannot be achieved without a truly integrated energy design approach, by a combination of two major tools: (a) avoiding, postponing or reducing the generation of heating and cooling loads, by applying the basic principles of building physics and (b) using alternative, renewable sources and systems to produce the heating and refrigeration necessary.

Understanding the requirements of the user and providing adequate solutions remains the single most important prerequisite, if the design had to be successful and just a simple academic exercise. Targeted, interdisciplinary postgraduate courses are needed, with curricula focusing on the utilization of state-of-the-art technology, but also with the holistic approach in the core of their educational attitude, in order to provide architects and engineers with the expertise needed.