scholarly journals Rethinking Performance Gaps: A Regenerative Sustainability Approach to Built Environment Performance Assessment

2018 ◽  
Vol 10 (12) ◽  
pp. 4829 ◽  
Author(s):  
Sylvia Coleman ◽  
Marianne Touchie ◽  
John Robinson ◽  
Terri Peters
Keyword(s):  
Built Environment ◽  
Performance Assessment ◽  
Design Stage ◽  
Building Performance ◽  
Design Strategies ◽  
Actual Performance ◽  
Early Design Stage ◽  
Performance Targets ◽  
Expectations Gap ◽  
Environment Performance

Globally, there are significant challenges to meeting built environment performance targets. The gaps found between the predicted performance of new or retrofit buildings and their actual performance impede an understanding of how to achieve these targets. This paper points to the importance of reliable and informative building performance assessments. We argue that if we are to make progress in achieving our climate goals, we need to reframe built environment performance with a shift to net positive goals, while recognising the equal importance of human and environmental outcomes. This paper presents a simple conceptual framework for built environment performance assessment and identifies three performance gaps: (i) Prediction Gap (e.g., modelled and measured energy, water consumption); (ii) Expectations Gap (e.g., occupant expectations in pre- and post-occupancy evaluations); and, (iii) Outcomes Gap (e.g., thermal comfort measurements and survey results). We question which of measured or experienced performance is the ‘true’ performance of the built environment. We further identify a “Prediction Paradox”, indicating that it may not be possible to achieve more accurate predictions of building performance at the early design stage. Instead, we propose that Performance Gaps be seen as creative resources, used to improve the resilience of design strategies through continuous monitoring.

A Dynamic Analysis Of The Impact Of Air Pollution On The daylight Availability In An Open-plan Office In London

2021 ◽  
pp. 94-103
Author(s):  
Jiangtao Du ◽  
Steve Sharples
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Simulation Analysis ◽  
Design Stage ◽  
Design Strategies ◽  
Early Design Stage ◽  
Pollutant Deposition ◽  
Open Plan ◽  
Building Project ◽  
The Impact

The deposition of air pollutants on glazing can significantly affect the daylight transmittance of building fenestration systems in urban areas. This study presents a simulation analysis of the impact of air pollution and glazing visual transmittance on indoor daylight availability in an open-plan office in London. First, the direct links between glazing visual transmittance and daylighting conditions were developed and assessed. Second, several simple algorithms were established to estimate the loss of daylight availability due to the pollutant deposition at the external surface of vertical glazing. Finally, some conclusions and design strategies to support facade planning at the early design stage of an urban building project were developed.

Building performance in the context of industry pressures

2014 ◽  
Vol 8 (4) ◽  
pp. 527-543
Author(s):  
Craig Robertson ◽  
Dejan Mumovic
Keyword(s):  
Energy Consumption ◽  
Performance Assessment ◽  
Energy Gap ◽  
Building Energy ◽  
Energy Performance ◽  
Building Performance ◽  
Structured Interviews ◽  
Web Based ◽  
Actual Performance ◽  
Content Type

Purpose – This paper aims to explore the relationship between designed and actual building performance as represented in an Royal Institute of British Architects- and Chartered Institution of Building Services Engineers-backed web-based comparison platform and the industry perception of the pressures surrounding building performance assessment. European directives and UK Parliamentary Acts have resulted in a range of mechanisms aimed at encouraging monitoring of energy consumption, responsive management and evidence-based design. Web-based feedback platforms aim to feed evaluation data back to industry anonymously; however, there exists a range of barriers and disincentives that prevent widespread and habitual engagement with building evaluation. Design/methodology/approach – Using energy data from the CarbonBuzzweb platform and a series of semi-structured interviews, a mixed-methods study has been carried out. Analysis of the characteristics of the existing energy discrepancy between designed and actual performance shows where variance typically occurs. Interviews with industry actors presents a synopsis of the perceived and actual legislative and procedural pressures that exist in relation to building performance assessment. Findings – The conclusions of this paper identify weaknesses in the current legislative and incentivisation mechanisms with regard to targeting building energy performance and industrial pressures that hinder broader industry engagement with post-occupancy evaluation. Originality/value – The recommendations arising from this study are for adjustments to the existing legislative framework to increase participation in meaningful building energy evaluation targeted at the specifics of the energy gap and the motivations of industrial actors. This will specifically help to reduce building energy consumption and associated carbon emissions.

scholarly journals A STUDY OF ENVIRONMENTAL APPROACH IN EARLY DESIGN STAGE

BORDER ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 53-64
Author(s):  
Fenty Ratna Indarti
Keyword(s):  
Early Stage ◽  
Developed Countries ◽  
Energy Performance ◽  
Design Stage ◽  
Temperate Climate ◽  
Building Performance ◽  
Early Design ◽  
Early Design Stage ◽  
Earth Condition ◽  
Reduce Carbon Emission

Due to the ozone layer depletion, global warming and climate change, there is a significant increase to reduce carbon emission. Practitioners and academia undertake studies to promote environmentally friendly built environments. Developed countries have established specific standards to achieve a carbon neutral as their commitment to contribute for a better earth condition. Design phases are considered as the early stage where the environmental approach needs to be applied to predict the building performance as soon as possible to maximise the energy efficiency of the proposed building. Another significant factor affecting the building energy performance is climate. Climate becomes the first parameter to generate building proposals as it is contextual to the site. This study aims to assess the application of environmental approach in designing educational building in temperate climate during the early design stage. The combination of design and simulation during the early design stage, helps to define the best design proposal to adopt passive design that harvest the environment condition as much as possible to deliver comfort into the building.

Reliability-Informed Economic and Energy Evaluation for Design for Remanufacturing: A Case Study on a Hydraulic Manifold

2021 ◽  
Author(s):  
Venkat P. Nemani ◽  
Jinqiang Liu ◽  
Navaid Ahmed ◽  
Adam Cartwright ◽  
Gül E. Kremer ◽  
...  
Keyword(s):  
Life Cycles ◽  
Design Stage ◽  
Design Strategies ◽  
Early Design Stage ◽  
Energy Evaluation ◽  
Design For Remanufacturing ◽  
Design Changes ◽  
Development Evaluation ◽  
Field Reliability

Abstract Design for Remanufacturing (DfRem) is an attractive approach for sustainable product development. Evaluation of DfRem strategies, from both economic and environmental perspectives, at an early design stage can allow the designers to make informed decisions when choosing the best design option. Studying the long-term implications of a particular design scenario requires quantifying the benefits of remanufacturing for multiple life cycles while considering the reliability of the product. In addition to comparing designs on a one-to-one basis, we find that including reliability provides a different insight into comparing design strategies. We present a reliability-informed cost and energy analysis framework that accounts for product reliability for multiple remanufacturing cycles within a certain warranty policy. The variation of reuse rate over successive remanufacturing cycles is formulated using a branched power-law model which provides probabilistic scenarios of reusing or replacing with new units. To demonstrate the utility of this framework, we use the case study of a hydraulic manifold, which is a component of a transmission used in some agricultural equipment, and use real-world field reliability data to quantify the transmission’s reliability. Three design improvement changes are proposed for the manifold and we quantify the costs and energy consumption associated with each of the design changes for multiple remanufacturing cycles.

Investigation of Energy Risk in Pre-Construction Stage: A Qualitative Approach

2021 ◽  
Vol 15 (S1) ◽  
pp. 39-45
Author(s):  
Mohammad Syabilee Nikman Lee ◽  
Sulzakimin Mohamed ◽  
Roshartini Omar ◽  
Norliana Sarpin ◽  
Haryati Shafii ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Structured Interview ◽  
Design Stage ◽  
Building Performance ◽  
Design Strategies ◽  
Construction Stage ◽  
Planning Stage ◽  
Potential Impact ◽  
The Impact

The energy demand growth every year for existing building due to the natural lifecycle of the building performance. Systematic strategy in retrofitting is proven to revamp the energy building performance. However, the retrofitting process is facing several of unknown risk as early in pre-construction stage to achieve optimum energy efficiency design strategy. The risk requires strategic assessment to minimize the impact towards the efficiency level in retrofitting. This study aims to examine the risks and the potential impact towards design strategies by conducting a semi-structured interview from six internal stakeholders in the retrofit project. The result derived from the interview revealed that there are 13 of major risks involve in retrofit project and divided into planning stage and design stage. All the risks are proven to provide a potential impact towards energy efficiency design strategies.

scholarly journals A MODIFIED ANALYTICAL HIERARCHY PROCESS DESIGN EVALUATION METHODS FOR PRODUCT RECOVERY

2021 ◽  
Keyword(s):  
Analytical Hierarchy Process ◽  
Design Guidelines ◽  
Life Cycles ◽  
Product Recovery ◽  
Design Stage ◽  
Design Element ◽  
Design Strategies ◽  
Early Design Stage ◽  
Design Attributes ◽  
Hierarchy Process

The absence of existing standards for product recovery planning and the associated difficulty in prioritising the conflicting design requirements are among the main challenges faced during product design. In this paper, a concept for the Design for Multiple Life-Cycles (DFMLC) is proposed to address this situation. The objective of the DFMLC model is to assist designers in evaluating design attributes of Multiple Life-Cycle Products (MLCP) at the early design stage. The methodology adopted for the evaluation of MLCP design strategies has been based on a modified Analytical Hierarchy Process (AHP). Two mapping matrices of the design guidelines and design strategies concerning MLCP design attributes were developed for the modified AHP model. Disassemblability (> 21 %) was found to be the most important design element for MLCP followed by serviceability (> 20 %) and reassembly (> 12 %).

Sensing Material Systems - Novel Design Strategies

2012 ◽  
Vol 10 (3) ◽  
pp. 361-375 ◽  
Author(s):  
Sascha Bohnenberger ◽  
Chin Koi Khoo ◽  
Daniel Davis ◽  
Mette Ramsgard Thomsen ◽  
Ayelet Karmon ◽  
...  
Keyword(s):  
Building Materials ◽  
Design Stage ◽  
Design Strategies ◽  
Early Design Stage ◽  
Built Form ◽  
Novel Approach ◽  
Sensing Material ◽  
Material Systems ◽  
New Generation ◽  
External Stimuli

The development of new building materials has decisively influenced the progression of architecture through the link between built form and available material systems. The new generation of engineered materials are no exception. However, to fully utilise these materials in the design process, there is a need for designers to understand how these new materials perform. In this paper we propose a method for sensing and representing the response of materials to external stimuli, at the early design stage, to help the designer establish a material awareness. We present a novel approach for embedding capacitive sensors into material models in order to improve material performance of designs. The method was applied and tested during two workshops, both discussed in this paper. The outcome is a method for anticipating engineered material behaviour.

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