Development of prefabricated retrofit module towards nearly zero energy buildings

Abstract

Retrofit de la construcción mediante paneles prefabricados: una reseña del estado del arte. Building Retrofit through prefabricated panels:an overview on the state of the art.Resumen-El objetivo principal de este paper es ofrecer una reseña del utilizo de sistemas de paneles prefabricados en el retrofit de edificios. El retrofit representa un punto focal de la eficiencia energética, considerando el gran numero de edificios existentes, privados y públicos, en Europa. La necesidad de intervención en este ámbito es enfatizada por las Directivas Europeas, y por la roadmap de Horizon 2020. Varias investigaciones y proyectos se centran en el tema de la prefabricación en el retrofit, enfatizando la importancia de esta estrategia. La reseña de el estado del arte muestra los diferentes enfoques de los paneles prefabricados: una clasificación critica de estos proyectos diferencia entre sistemas basados en grandes o pequeños paneles, sistemas de ampliación basados en paneles estructurales y sistemas parcialmente prefabricados. Esta clasificación es útil porque consiente posibles progresos en este campo, enfatizando los adventajas y desventajas de cada sistema. Los asuntos mas importantes son los de diseño, fabricación, transporte y instalación. Una reseña de estos asuntos es también provista, enfatizando los campos de innovación, y los posibles futuros desarrollos de la prefabricación en el retrofit de las construcciones.Palabras clave-Reconversión de edificios; paneles prefabricados; envolvente del edificio; adaptación energética. Abstract-The main aim of this paper is to provide an overview of the use of prefabricated panels in external building retrofitting. Building retrofit represents a pivotal point in terms of energy efficiency, connected to the great amount of existing buildings, both public and private, all around Europe. The need of intervention is underlined by different European Directives, as well as by Horizon 2020 roadmap. Many research works and projects are focusing on the theme of prefabrication in retrofit, stressing the importance of this strategy. The review of the state of the art shows several approaches in terms of prefabricated panels: a critical classification of these projects distinguish between systems based on large and small panels, systems for extensions based on structural panels, and partially prefabricated systems. The classification is useful as it can help in understanding further development of prefabricated panels, underlining the advantages and disadvantages of the systems. The main challenges are linked to design, fabrication, transport and installation. An overview of those issues is also provided, stressing the main innovation fields to be further investigated, and the possible future developments of prefabrication in building retrofit.

Assessment of the progress towards the establishment of definitions of Nearly Zero Energy Buildings (nZEBs) in European Member States

“…Furthermore, several simulation studies and pilot projects testify the interest of the international community in this topic [22], [23], [24], [25], [26], [27], [28]. The Entranze…”

Design optimization and optimal control of grid-connected and standalone nearly/net zero energy buildings

“…Kapsalaki et al [51] developed a methodology and a new tool based on Matlab program to identify the economic efficient design solutions for residential net zero energy building design. Silva et al [60] presented a new prefabricated retrofit module (PRM) solution and different simulation tools (i.e. 3D CAD, THERM, WUFI, eQuest) were used to optimize the building performance.…”

“…The thermal insulation thickness from 40 to 60 mm and double glazing of 6/16/6 mm are found to be the cost-optimal solutions for most real houses studied. Silva et al [60] proposed and studied a new prefabricate retrofit module solution for the existing building facades to meet the nZEB standards in Portuguese. Ismail et al [49] investigated different components constructing the hybrid system for remote houses in a Malaysian village in the tropical climate.…”

CLT (Cross Laminated Timber): Produksi, Karakteristik dan Perkembangannya (CLT (Cross Laminated Timber): Production, Characteristics and Development)

“…Kinerja CLT sebanding dengan bahan kayu utuh namun beratnya hanya seperenam dari berat beton, sehingga proses instalasi lebih cepat tiga kali lipat dari beton serta lebih hemat tenaga kerja dan biaya produksi (Macleod, 2013). Kecepatan dalam pembangunan gedung dari CLT juga menjadi salah satu faktor yang membuat masyarakat New Zealand tertarik dalam menggunakan CLT (Iqbal, 2015 Popescu (2017) Prafabrikasi juga membuat bangunan yang mempunyai potensi untuk di-recycle lebih besar, mempunyai energi terikat lebih rendah, serta hemat energi dengan mengurangi kebutuhan energi antara 76-83% (Silva, Almeida, Bragança, & Mesquita, 2013). Bangunan prafabrikasi mempunyai keunggulan dapat didaur ulang, karena dengan desain gedung yang dari awal dirancang untuk mudah dibongkar tanpa merusak terlalu banyak komponen bangunan dan akan mengurangi sampah sisa bangunan (Lehmann, 2013).…”