Multi-Objective Building Performance Simulation - Integrating Building Performance with Architectural Modelling in Early Stage Design
Typ
Examensarbete för masterexamen
Program
Publicerad
2019
Författare
Wäppling, Linda
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Building performance simulation (BPS) is generally not included in early stages of the
building design process. That often results in difficulties meeting the increasing
demands rather than optimising for building performance. In Sweden, the
responsibility for reaching the demands on building performance lies on the engineer.
There are studies made on integration of building performance within the
design methodology of the architect, thus shifting the responsibility into the role of
the architect. However, the author proposes an interdisciplinary integration; to keep
the responsibility for BPS to the engineer and integrate BPS in early stages.
Choices for development of the proposed integration are made based on a
theoretical background from a literature review and ten interviews, providing insight
on the issue from a practical point of view. Barriers are identified as project budget,
distribution of responsibilities, no common praxis and the usability of BPS tools.
The two last mentioned barriers are addressed. In the lack of a common praxis,
a process definition is proposed, following an iterative and collaborative
methodology. Furthermore, a tool for BPS is proposed and evaluated through a case
study performed together with Ona Forss, writing her Master’s Thesis in Architecture.
The tool is an integration of the energy simulation tool ‘BeDOT’ with multiple
analyses and connects results to a visualisation interface.
By agreement with Ona Forss, a selection of indicators is chosen as the most
relevant for early stage design in the context of the case study, delimiting the proposal
to indicators regarding energy and daylight, sunlight, thermal comfort, area indicators,
access to solar energy and desired views. The proposed integration is one solution out
of many, and an evaluation of the case study collaboration showed that it fulfils the
purpose of facilitating decision-making for both architects and engineers.
Visualising results in a common interface by projecting indicator result
meshes over the 3D geometry is considered valuable to the architect’s design process,
however the architect do not find the numerical indicators as informative as the
graphical ones, and furthermore the time for simulations proves to be longer than
desired.
As a result of those observations, and the conclusion that the architect’s
massing studies are already limited to the detailed development plan, it is suggested as
future research to investigate integration of BPS in the detailed development planning
process and to continue developing the tool.
Beskrivning
Ämne/nyckelord
Building performance simulation , interdisciplinary collaboration , integrated building performance , BeDOT, , multi-objective analysis