scholarly journals Building energy performance assessment for existing commercial buildings with heritage values

2019 ◽  
Vol 277 ◽  
pp. 03018
Author(s):  
James Pow Chew Wong
Keyword(s):  
Performance Assessment ◽  
Greenhouse Gas ◽  
Building Energy ◽  
Energy Performance ◽  
Simulation Software ◽  
Commercial Buildings ◽  
Building Performance ◽  
Performance Simulation ◽  
Building Energy Performance ◽  
Building Performance Simulation

The building sector accounts for 19% of Australia's energy consumption and around 23% of the greenhouse gas emissions. In 2005, commercial buildings in Australia were responsible for 10% or 26 megatonnes (Mt) of the nation's greenhouse gas emissions. They are two effective ways to reduce the building sector's emissions, namely constructing new energy efficient buildings or retrofitting existing buildings. Due to the life expectancy of existing building stock the greatest reduction in emissions before 2030 could be achieved through retrofits. Building performance assessment and evaluation uses predictive modelling method to investigate and evaluate building performance in energy demands, thermal occupant comfort, indoor air quality, building retrofit options and many other related environmental and wellbeing aspects. This paper discussed the use of building performance simulation software to investigate the impacts of various retrofit options have onto energy performance of existing commercial buildings with heritage values in Australia. The research explores the use of thermal and airflow modelling in assisting understanding of building energy performance with various retrofit options applied to existing commercial buildings. The finding highlights the capabilities of building performance simulation software in decision making for building performance investigations.

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.

Reduction of computation time in building energy performance simulation programs by applying tearing techniques

2016 ◽  
Vol 130 ◽  
pp. 667-675 ◽  
Author(s):  
Juan Luis Foncubierta Blázquez ◽  
Ismael Rodríguez Maestre ◽  
Francisco Javier González Gallero ◽  
J. Daniel Mena Baladés
Keyword(s):  
Computation Time ◽  
Building Energy ◽  
Energy Performance ◽  
Performance Simulation ◽  
Building Energy Performance

scholarly journals Building Energy Performance Assessment Using an Easily Deployable Sensor Kit: Process, Risks, and Lessons Learned

2021 ◽  
Vol 6 ◽  
Author(s):  
Mario Frei ◽  
Chirag Deb ◽  
Zoltan Nagy ◽  
Illias Hischier ◽  
Arno Schlueter
Keyword(s):  
Performance Assessment ◽  
Building Energy ◽  
Energy Performance ◽  
Lessons Learned ◽  
Assessment Process ◽  
Heat Flux Sensor ◽  
Single Family ◽  
Performance Gap ◽  
Building Energy Performance ◽  
Implementation Challenges

In the building and construction sector, the mismatch between predicted and measured energy consumption is a well-known phenomenon called the performance gap. A promising approach to reduce the performance gap and thus improve the current building energy performance assessments are methods based on in-situ measurements. In this work, we present a building assessment process based on a novel, easily deployable wireless sensor kit. The basic sensor kit for building energy assessment presented in this study consists of a heating energy input node, several indoor temperature nodes, an outdoor temperature node, and a heat flux sensor. Specifically, the study outlines a medium-scale deployment of the sensor kit in eight occupied single-family homes in Switzerland and identifies the benefits of such an approach in the estimation of the overall heat loss coefficient and U-values. The findings of this study suggest that such sensor kits could be effectively used for rapid building performance assessment, and the paper concludes by outlining the potential benefits and implementation challenges of a larger scale study.

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