Building Performance Simulations and Architects against Climate Change and Energy Resource Scarcity

In Europe, 40% of the total energy is consumed by buildings; in this sense, building performance simulation tools (BPSTs) play a key role; however, the use of these tools by architects is deficient. Therefore, this study aims to detect the architects’ perception on BPSTs. To this end, an online survey was conducted to determine the selection criteria of these BPSTs and non-users, to investigate the reasons for not using the tools. The outcomes showed that there was a wide gap between architects and the management of simulation programs in Spain, mainly due to the lack of training. BPSTs are described as a kind of intellect amplifiers, as they are perceived as powerful allies between professors and students of architecture and between architects and architectural design; therefore, through BPSTs, sustainability is taken very much into consideration to make buildings more energy efficient. Therefore, it is primarily concluded that further and higher education must undergo significant improvement to use simulations as part of the architectural design.

Architectural Models as a Base for Reliable Early Stage Energy Simulation

<p>Designers from the Architecture, Engineering, and Construction (AEC) industries have shown a desire to allow for quantitative data to back up sustainable decision-making (Braasch, 2016). Methods and software used to reach this goal often do not provide all the information to make informed design decisions or require a complete remodelling of designs at each stage. These factors make Building Performance Simulation (BPS) feasible at early design stages, where it is most beneficial for Architects. This thesis explores the current process to translate Architectural models constructed within a Building Information Modelling (BIM) environment into Building Energy Models (BEM) so that performance simulations can take place. Within the aim of exploring translation processes, the objectives were to document: • Whether current processes can facilitate modelling of environmental building performance during early design, as well as during developed design? • Whether there are any common problems or successful approaches that might form the basis of future improvements in the way Architect’s and consultant’s models work together? This thesis has identified 19 translation processes from current literature and examined a range of representative processes for exchanging information between Architectural modelling and BPS programs. It concluded that translation issues can be classified into similar groups based on the overall processes used. The eight categories of issues can be used by future developers to determine their priorities in development, and those looking for a current solution can adopt one for themselves. None of the processes tested allowed for issue-free modelling of building performance during sketch design. The two types of building translation schema evaluated in this thesis divided identified references between a dedicated and generalised approach. The dedicated approach of gbXML and the generic approach of IFC identified similar issues; however, IFC contained more of these problems because it communicates with all modelling programs at a lower information quality. Due to the generic approaches containing more issues that take longer to solve, it is currently more complicated to generate an energy model out of IFC data. While the gbXML schema can only provide benefits for BPS related translations, it is the most viable way to provide the service.</p>

Architectural Models as a Base for Reliable Early Stage Energy Simulation

<p>Designers from the Architecture, Engineering, and Construction (AEC) industries have shown a desire to allow for quantitative data to back up sustainable decision-making (Braasch, 2016). Methods and software used to reach this goal often do not provide all the information to make informed design decisions or require a complete remodelling of designs at each stage. These factors make Building Performance Simulation (BPS) feasible at early design stages, where it is most beneficial for Architects. This thesis explores the current process to translate Architectural models constructed within a Building Information Modelling (BIM) environment into Building Energy Models (BEM) so that performance simulations can take place. Within the aim of exploring translation processes, the objectives were to document: • Whether current processes can facilitate modelling of environmental building performance during early design, as well as during developed design? • Whether there are any common problems or successful approaches that might form the basis of future improvements in the way Architect’s and consultant’s models work together? This thesis has identified 19 translation processes from current literature and examined a range of representative processes for exchanging information between Architectural modelling and BPS programs. It concluded that translation issues can be classified into similar groups based on the overall processes used. The eight categories of issues can be used by future developers to determine their priorities in development, and those looking for a current solution can adopt one for themselves. None of the processes tested allowed for issue-free modelling of building performance during sketch design. The two types of building translation schema evaluated in this thesis divided identified references between a dedicated and generalised approach. The dedicated approach of gbXML and the generic approach of IFC identified similar issues; however, IFC contained more of these problems because it communicates with all modelling programs at a lower information quality. Due to the generic approaches containing more issues that take longer to solve, it is currently more complicated to generate an energy model out of IFC data. While the gbXML schema can only provide benefits for BPS related translations, it is the most viable way to provide the service.</p>

The feasibility of 'Building Performance Sketching' within the building design process

<p>This study investigated the question of whether or not the distributed model method (DMM) could be perceived by the New Zealand building industry’s architects and engineers as overcoming barriers which prevent them from implementing building performance sketching within their design processes. Current literature on the barriers to building performance simulation (BPS) have suggested a number of recommendations for tool developers to address, with little documented success to their impact on overcoming these perceived barriers. The recommendations suggested mainly improving tool interoperability for effective design team collaboration, and means to demonstrate model quality assurance. The DMM presented itself within literature as a new means to overcome the difficulties of interoperability faced by the central modelling method, commonly used in building information modelling (BIM), to meet requirements for design team collaboration. With the ability to provide high interoperability and parametric capabilities with detailed simulation programs, the DMM was hypothesised to address all recommendations from literature to overcome the barriers to implementing BPS within the design process. Furthermore, the study proposed the use of building performance sketching as an approach to assess the architectural sketch as a means to ensure quality assurance. The study concluded that DMM cannot currently address all wants and wishes of users established in literature, but has potential. Future research efforts are required to focus upon: creating industry specific templates for building types; developing these templates to be adaptable for the different modelling operators of the proposed workflow demonstrated to the participants within this study; and developing quality assurance standards for modelling and guidelines for model validation. Finally, the study concluded with future work required beyond tool development: improving education of architects; and introducing legislation.</p>

The feasibility of 'Building Performance Sketching' within the building design process

<p>This study investigated the question of whether or not the distributed model method (DMM) could be perceived by the New Zealand building industry’s architects and engineers as overcoming barriers which prevent them from implementing building performance sketching within their design processes. Current literature on the barriers to building performance simulation (BPS) have suggested a number of recommendations for tool developers to address, with little documented success to their impact on overcoming these perceived barriers. The recommendations suggested mainly improving tool interoperability for effective design team collaboration, and means to demonstrate model quality assurance. The DMM presented itself within literature as a new means to overcome the difficulties of interoperability faced by the central modelling method, commonly used in building information modelling (BIM), to meet requirements for design team collaboration. With the ability to provide high interoperability and parametric capabilities with detailed simulation programs, the DMM was hypothesised to address all recommendations from literature to overcome the barriers to implementing BPS within the design process. Furthermore, the study proposed the use of building performance sketching as an approach to assess the architectural sketch as a means to ensure quality assurance. The study concluded that DMM cannot currently address all wants and wishes of users established in literature, but has potential. Future research efforts are required to focus upon: creating industry specific templates for building types; developing these templates to be adaptable for the different modelling operators of the proposed workflow demonstrated to the participants within this study; and developing quality assurance standards for modelling and guidelines for model validation. Finally, the study concluded with future work required beyond tool development: improving education of architects; and introducing legislation.</p>

A Comprehensive Evaluation Method for Air-Conditioning System Plants Based on Building Performance Simulation and Experiment Information

During the design stage of an HVAC (heating, ventilation, and air conditioning) system in a construction project, designers must decide on the most workable design scheme for the plant room in the building based on the evaluation of multiple aspects related to system performance that need to be considered, such as energy efficiency, economic effectiveness, etc. To solve this problem, this paper proposes a comprehensive evaluation method for the plant rooms of centralized air-conditioning systems in commercial buildings. This new method consists of two analyses used in tandem: Building Performance Simulation (BPS) models and a collection of real HVAC design cases (the carried-out design solutions). The BPS models and a knowledge of the reduction approach based on Rough Set (RS) theory are used to generate data and weight factors for the indices of energy efficiency; and the real design cases are employed with a heuristic algorithm to extract the compiled empirical information for other evaluation items of the centralized HVAC system. In addition, this paper also demonstrates an application in an actual case of a building construction project. By comparing the expert decision-making process and the evaluation results, it is found that they are basically consistent, which verifies the reasonability of the comprehensive evaluation method.