scholarly journals Development of an Nearly Zero Emission Building (nZEB) Life Cycle Cost Assessment Tool for Fast Decision Making in the Early Design Phase

Energies ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 59 ◽  
Author(s):  
Hae Kang
Keyword(s):  
Decision Making ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Assessment Tool ◽  
Cost Assessment ◽  
Design Phase ◽  
Early Design ◽  
Zero Emission ◽  
Fast Decision ◽  
Early Design Phase

scholarly journals Early Design Space Exploration with Model-Based System Engineering and Set-Based Design

Systems ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 45 ◽  
Author(s):  
Eric Specking ◽  
Gregory Parnell ◽  
Edward Pohl ◽  
Randy Buchanan
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Design Space ◽  
Design Phase ◽  
Analysis Framework ◽  
Trade Off ◽  
Early Design ◽  
Integrated Framework ◽  
Set Based Design ◽  
Early Design Phase

Adequately exploring the tradespace in the early system design phase is important to determine the best design concepts to pursue in the next life cycle stage. Tradespace exploration (TSE) often uses trade-off analysis. Set-based design (SBD) methods, compared to traditional point-based design, explore significantly more designs. An integrated framework with model-based system engineering (MBSE) and a life cycle cost model enables design evaluation in near real-time. This study proposes an early design phase SBD methodology and demonstrates how SBD enabled by an integrated framework with MBSE and life cycle cost provides an enhanced TSE that can inform system design requirements and help decision makers select high performing designs at an affordable cost. Specifically, this paper (1) provides an overview of TSE and SBD, (2) describes the Integrated Trade-off Analysis Framework, (3) describes a methodology to implement SBD in the early design phase, and (4) demonstrates the techniques using an unmanned aerial vehicle case study. We found that the Integrated Trade-off Analysis Framework informs requirement development based upon how the requirements affect the feasible tradespace. Additionally, the integrated framework that uses SBD better explores the design space compared to traditional methods by finding a larger set of feasible designs early in the design process.

scholarly journals Adaptability of Primary and Middle Schools to Post-Pandemic Reuse - A Discussion in the Context of Flexibility

2020 ◽  
pp. 5-22
Author(s):  
Orkan Zeynel Guzelci ◽  
Sema Alacam ◽  
Serkan Kocabay ◽  
Elif Isik Akkuyu
Keyword(s):  
Middle School ◽  
Life Cycle ◽  
Building Envelope ◽  
School Buildings ◽  
Design Phase ◽  
Early Design ◽  
Outdoor Space ◽  
Function Relationship ◽  
School Plans ◽  
Early Design Phase

This study discusses how the existing primary and middle school buildings can be adapted to the new needs emerging in the Covid-19 process. The three levels of adaptation are defined as follows: Building envelope-outdoor space relationship, plan layout-function relationship, and furniture relocation. In the scope of this study, five selected school plans were evaluated in the context of flexibility in the plan layout-function relationship. In this study, the concept of “adaptation” is considered as a design approach at the early design phase and/or intervention to respond to a new need in the life cycle of the building.

scholarly journals Comparative Evaluation Model Framework for Cost-Optimal Evaluation of Prefabricated Lightweight System Envelopes in the Early Design Phase

2019 ◽  
Vol 11 (18) ◽  
pp. 5106 ◽  
Author(s):  
Marko Jausovec ◽  
Metka Sitar
Keyword(s):  
Life Cycle Cost ◽  
Comparative Evaluation ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Optimal Solution ◽  
Design Phase ◽  
Single Family ◽  
Model Framework ◽  
Early Design ◽  
Early Design Phase

This paper proposes an extended comparative evaluation model framework (ECEMF) that highlights two objectives: (1) a specific economic evaluation method for the cost-optimisation of prefabricated lightweight system envelopes to achieve a greater value of the building, and (2) a comparative evaluation model framework usable by different profiles of stakeholders, when adopting the decision on the most optimal envelope type in the early design phase. Based on the proposed framework, the analysis was conducted for the case study building representing a small single-family house located in Slovenia. The methodology applied is based on the life cycle cost (LCC) including construction, operation, maintenance, and refurbishment costs, but excluding dismantling, disposal, and reuse, for the period of 50 years’ lifetime of the building which combines the Building Information Modelling (BIM) with Value for Money (VfM) assessment. To exploit the automated evaluation process in the computing environment, several tools were used, including Archicad for BIM in combination with Legep software for LCC. On one hand, the model confirms the assumption that the optimal value parameters of a building do not only depend on the typical costs related to high-performance buildings. On the other hand, from the stakeholders’ view, the model enables the choice of the optimal solution regarding the envelope type to be made in the early design phase. In this view, the model could function as an important decision tool, with a direct economic impact on the value.

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