1,720,980 research outputs found
Le necessità normative, il calcolo dinamico delle prestazioni del sistema edificio-impianti: la soluzione Open Source
No full textBuilding energy simulation and object-oriented modelling: review and reflections upon achieved results and further developments
No full textOver the past 30 years numerous Building Simulation Codes (BSC) have been developed. Nevertheless, none of them has yet become a “standard”. Focusing the attention on the use of advanced Object-Oriented Modelling, a review of the most used BSC is here carried out. First, new requirements have been investigated. Actually, the evolving nature of Building Systems and of society demand for tools designed to evolve at the hands of the users. Modularity seemed to be the answer to these needs. However, in the BPS (Building Performance Simulation) field, modularity has been interpreted in different ways leading to different approaches to Modelling and Simulation (M&S). A first purpose of this work is to redefine what modularity is needed in BPS tools (an “enriched” one) and subsequently to investigate if and how actual tools address that. Focusing on Building Fabric’s M&S, we have investigated the different approaches taken by Esp-r, IDA ICE and PsiGene. The goal was to understand if they could allow: simpler distributed calculus, distributed responsibilities in code’s developing, an exponential evolution of algebraic routines and an increased productivity and widespread use of these tools, thanks to design and process automation. The finding was that almost always when one of these requirements was addressed another one was unsatisfied. It could be concluded that such BPS tool (characterized by an enriched modularity) is not yet ready and that a technology driven research should be pursued to develop it. Indeed, different concepts derived by Information Technology should be further analyzed in order to understand if similar formalization might lead to a renewed modelling, simulating and validating methodology more focused and oriented towards BPS tools’ evolutionary growth
Gallerie, le regole di illuminazione n° 14 del 11/16 Aprile 2005, pag. 16 - "Standard per pavimenti sopraelevati" n° 18 del 9/14 Maggio 2005, pag. 16 - Raccomandazioni sulle saldature n° 22 del 6/11 Giu. 2005, pag. 16.
No full textCTF vs FD Based Numerical Methods: Accuracy, Stability and Computational Time's Comparison
Full text linkConduction Transfer Function (CTF) and Finite Difference (FD) based numerical methods, are widely used to calculate transient
heat conduction in Building Performance Simulation tools (BPSts). The first method is still preferred, when linear system are
modelled, to the second one, thanks to the small computational time required during the simulation. However, current BPSts have
not yet implemented effective warning messages to stop their “costumers” when these methods are misused. In this article, those
methods are compared in terms of computational time and accuracy, with the aim of identifying selection criteria based on the
specific addressed problem
Prove geotecniche, terreni standard
No full textIl Sole 24 Ore - Edilizia & Territorio, n° 10 del 14/19 Marzo 200
Gallerie, le regole di illuminazione
No full textIl Sole 24 Ore - Edilizia & Territorio, n° 14 del 11/16 Aprile 200
Advancement in the development of an Open Source Object Oriented BPSt: development methodology
Full text linkIn order to promote its readability, modularity and maintainability, a new Object Oriented (OO) tool for the simulation of buildings performance, has been developed in the last years. The first results of a comparative validation done on our tool, following the BESTEST standard, have been published in the 2013 IBPSA International Conference. The chosen development methodology aims to achieve efficient and high quality software’s development in the field of Building Performance Simulation tools (BPSts) and is based on an Open Source (OS) development approach. Given the selected approach, the contribution of volunteer developers should be encouraged and supported. To effectively support the work of an OS community, key aspects are tasks automation, traceability and communication in the developing phase. The implemented development methodology is then based on: 1) the use of a Software Forge (SF) to promote communication between community members and to help in the management of the software development life-cycle, 2) the use of UML diagrams to describe community-agreed architectural decisions and enforce their implementation into the project, in a way that their implementation can be automatically checked, 3) the ability to group single tests of different modules in one automatic test session of validation, which also simplify final reporting, 4) the use of inheritance, offered by Object Oriented Programming (OOP), to specialize existing classes which, avoiding rewriting, partially automate code writing. As far as concern the quality of the tool, the definition of specific standards for programming, documenting and validating is also important. In particular, the validation phase has to be carried out in pool of verifiers, well documented and provided as an integral part of the documentation available to the user
Standard per pavimenti sopraelevati
No full textIl Sole 24 Ore - Edilizia & Territorio, n° 18 del 9/14 Maggio 200
Acque nuove regole per la raccolta, n° 1 del 10/15 Genn 2005, pag. 20. -"Facciate ventilate, ecco gli standard " n° 6 del 14/21 Febb. 2005, pag. 20. - "Prove geotecniche, terreni standard" n° 10 del 14/19 Marzo 2005, pag. 22
No full textProdotti, così si valuta il ciclo di vita n° 26 del 4/9 Lug 2005, pag. 18 - "Standard per gli impianti frigoriferi" n° 30 del 1/6 Agosto 2005, pag. 14. "Protezione catodica per i metalli" n° 34 del 5/10 Ottobre 2005, pag. 18.
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