Influence of Thermal Inertia and Solar Radiation on Energy Demand and Comfort: Concept to Retrofit of Italian School Buildings | Chapter 5 | Novel Perspectives of Geography, Environment and Earth Sciences Vol. 6

 Most of the Italian school constructions were built before the 1973 energy deadlock, so they need a retrofit to decrease energy demand and improve within environmental environments.The older buildings have weighty masonry; in these cases, the question is where it is more convenient to place an supplementary layer of padding: inside or outside the building envelope.Moreover, although age, these buildings have abundant windows; therefore, it is mainly necessary to better the solar control strategy by way of more recent schemes.This work is aimed to explore, only by way of computer simulations, the belongings of various retrofit policies on energy adeptness and general comfort conditions. A particular homemade program has been used.Two school houses of different ages, from different construction sciences, were examined, in a northerly Italian climate. In order to assess the influence of within gains and time characterization of use, other attainable uses for the same constructions, such as offices or dwellings, have existed simulated.The results of simulations display that external insulation forever performs high-quality, but in the case of classrooms, the differences from internal covering are irrelevant.  Differences increase accompanying the reduction of the internal gains and accompanying the extension of the ending of daily use, therefore accompanying the use as an office and even containing that as a dwelling.Solar control by means of limited packable slats inserted 'tween the glasses appears expected the most operating strategy in all cases, two together in terms of strength efficiency and visual comfort.

Author(s) Details:

Antonio Carbonari,
Department of Architecture and Arts, Università IUAV di Venezia, Italy.

Please see the link here: https://stm.bookpi.org/NPGEES-V6/article/view/10102

Unique Solution for Mechanical and Energy Retrofit of Existing Buildings by Means of a New Fabric Reinforced Geopolymer Mortar (FRGM) | Chapter 12 | Current Perspectives on Chemical Sciences Vol. 4

For the most part, the built heritage is ancient and thus involves engineering studies to develop the most effective retrofit system to enhance both mechanical and energy efficiency. In reality, the inadequacy of existing systems has been illustrated by recent disasters. Only think of the earthquakes that have weakened the structures more or less significantly; or the thermal insulation capability of buildings constructed over 50 years ago has been heavily challenged by climate change. In order to solve these problems independently, various interventions are widely proposed. Reasonable disadvantages, however, occur when direct contact with the target member is needed for structural retrofitting while the insulation layer is theoretically interposed in between. In this case, the current study proposes a modern, unique framework capable of ensuring both energy and structural retrofitting. A promising solution in this context is Inorganic Matrix Composites (IMCs). The Fabric Reinforced Cementitous Matrix (FRCM) is one of the most used among them; or rather, a composite made of a fabric inside an inorganic matrix (open grid or mesh) (lime or cement based). Even if the thickness of the inorganic matrix (compared to that of the fabric) is important, its thermal resistance is inadequate. The novelty of this research is to test a new FRCM geopolymer method by mixing fly-ash binder (reused material) and expanded glass aggregate (recycled material). In addition to thermal conductivity tests, direct tensile tests for measuring tensile stress, ultimate strain and elastic modulus were performed. The findings were similar to those of the conventional FRCM (commercially available). The potential of the Structural and Energy Retrofitting Proposal is discussed and possible implementation examples are also mentioned.

Author (s) Details

Fabio Longo
Department of Innovation Engineering, University of Salento, Lecce, Italy.

Alessio Cascardi
ITC-CNR, Construction Technologies Institute - Italian National Research Council, Bari, Italy.

Paola Lassandro
ITC-CNR, Construction Technologies Institute - Italian National Research Council, Bari, Italy.

Maria Antonietta Aiello
Department of Innovation Engineering, University of Salento, Lecce, Italy and ITC-CNR, Construction Technologies Institute - Italian National Research Council, Bari, Italy.

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