scholarly journals The importance of site on house heating energy modelling in Wellington - Integrating EnergyPlus with ENVI-met for site modelling

2021 ◽  
Author(s):  
◽  
Wendy Sunarya
Keyword(s):  
Design Process ◽  
Urban Areas ◽  
Fluid Dynamic ◽  
Ground Surface ◽  
Building Design ◽  
Building Energy ◽  
Design Strategies ◽  
Site Location ◽  
Energy Modelling ◽  
The Impact

<p>Site is an important factor in the building design process, where it is analysed to determine design strategies for responding the microclimate. It is also considered important in Building Energy Simulations (BES) where a weather file is used to represent the site location and its microclimate. However, many cases of BES in the design process use weather file from a nearby weather station rather than site specific microclimate. In fact, site microclimate can be affected by nearby parameters such as ground surface and vegetation, with unknown effects. In the Wellington, New Zealand context, micro-climates vary widely due to the local topography while suburban houses can be located on the side or bottom of a hill. These houses are likely to have different exposure to the sun and wind which can influence energy consumption for space heating.  Many studies about site-parameters impacts mainly focus on the vegetation and nearby buildings effect on microclimate. Only a few estimated the impact of site-parameters on building energy use and mostly their cases are in urban areas (flat terrain). Unfortunately, site parameters, such as altitude and slope, associated with the Wellington topography (hilly terrain) have never been examined. This thesis investigates the importance of site parameters on house heating energy modelling for the Wellington context. BES software, EnergyPlus, was used and explored to identify limitations in modelling site parameters. An attempt was made to solve these limitations through the integration with microclimate software. Three microclimate software programmes were reviewed: ENVI-met, UWG (Urban Weather Generator) and CFD (Computational Fluid Dynamic) software.  ENVI-met was selected to generate the local air temperature and relative humidity affected by site parameters, which was used for EnergyPlus weather-file modification. A parametric study of ENVI-met basic input with model evaluation was also conducted. The results of parametric test integrating ENVI-met with EnergyPlus showed that ENVI-met mostly produce insignificant impacts of site parameters on house heating energy, unlike the results found in the literature review. This is likely due to the cool weather conditions (winter in Wellington) used in simulation, which suggests that the idea of microclimate modelling using ENVI-met is not applicable for house heating energy modelling in the temperate, Wellington context.</p>

scholarly journals The importance of site on house heating energy modelling in Wellington - Integrating EnergyPlus with ENVI-met for site modelling

2021 ◽  
Author(s):  
◽  
Wendy Sunarya
Keyword(s):  
Design Process ◽  
Urban Areas ◽  
Fluid Dynamic ◽  
Ground Surface ◽  
Building Design ◽  
Building Energy ◽  
Design Strategies ◽  
Site Location ◽  
Energy Modelling ◽  
The Impact

<p>Site is an important factor in the building design process, where it is analysed to determine design strategies for responding the microclimate. It is also considered important in Building Energy Simulations (BES) where a weather file is used to represent the site location and its microclimate. However, many cases of BES in the design process use weather file from a nearby weather station rather than site specific microclimate. In fact, site microclimate can be affected by nearby parameters such as ground surface and vegetation, with unknown effects. In the Wellington, New Zealand context, micro-climates vary widely due to the local topography while suburban houses can be located on the side or bottom of a hill. These houses are likely to have different exposure to the sun and wind which can influence energy consumption for space heating.  Many studies about site-parameters impacts mainly focus on the vegetation and nearby buildings effect on microclimate. Only a few estimated the impact of site-parameters on building energy use and mostly their cases are in urban areas (flat terrain). Unfortunately, site parameters, such as altitude and slope, associated with the Wellington topography (hilly terrain) have never been examined. This thesis investigates the importance of site parameters on house heating energy modelling for the Wellington context. BES software, EnergyPlus, was used and explored to identify limitations in modelling site parameters. An attempt was made to solve these limitations through the integration with microclimate software. Three microclimate software programmes were reviewed: ENVI-met, UWG (Urban Weather Generator) and CFD (Computational Fluid Dynamic) software.  ENVI-met was selected to generate the local air temperature and relative humidity affected by site parameters, which was used for EnergyPlus weather-file modification. A parametric study of ENVI-met basic input with model evaluation was also conducted. The results of parametric test integrating ENVI-met with EnergyPlus showed that ENVI-met mostly produce insignificant impacts of site parameters on house heating energy, unlike the results found in the literature review. This is likely due to the cool weather conditions (winter in Wellington) used in simulation, which suggests that the idea of microclimate modelling using ENVI-met is not applicable for house heating energy modelling in the temperate, Wellington context.</p>

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.

Energy Efficiency Design Strategy of Commercial Building in Northeast Cold Regions

2012 ◽  
Vol 174-177 ◽  
pp. 2165-2169
Author(s):  
Yao Fu ◽  
Tian Heng Zhang
Keyword(s):  
Architectural Design ◽  
Building Energy ◽  
Point Of View ◽  
Commercial Building ◽  
Design Strategies ◽  
Cold Regions ◽  
Location Selection ◽  
Shape Coefficient ◽  
Energy Evaluation ◽  
The Impact

From the point of view of architectural design, envelope location, selection, and identify programs of envelope structure in the modern commercial building, give priority to the establishment of image of shopping malls , creating the mood of commercial and other factors. The paper will establish the appropriate model to the impact of the shape coefficient of Commercial building energy consumption in cold regions, validity analysis used the building energy evaluation software named Autodesk Ecotect to provide adequate theoretical basis of energy conservation design strategies.

scholarly journals Thermal Sensation in Courtyards: Potentialities as a Passive Strategy in Tropical Climates

2020 ◽  
Vol 12 (15) ◽  
pp. 6135 ◽  
Author(s):  
Ivan Julio Apolonio Callejas ◽  
Luciane Cleonice Durante ◽  
Eduardo Diz-Mellado ◽  
Carmen Galán-Marín
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Thermal Sensation ◽  
Thermal Response ◽  
Tropical Climate ◽  
Design Strategies ◽  
Physiological Equivalent Temperature ◽  
Synoptic Conditions ◽  
The Impact ◽  
Passive Strategy

Climate change will bring changes to our living conditions, particularly in urban areas. Climate-responsive design strategies through courtyards can help to moderate temperatures and reduce the thermal stress of its occupants. Thermal response inside courtyard is affected not only by its morphological composition but also by subjective factors. Thus, standardized thermal scales may not reflect the stress of the occupants. This study investigated the impact on thermal attenuation provided by a courtyard located in a tropical climate under extreme cold and hot synoptic conditions by means of local thermal sensation scales. Microclimatic variables were monitored, simultaneously with the application of a thermal comfort questionnaire, by using weather stations installed outside and inside the courtyard. The Modified Physiological Equivalent Temperature Index (mPET) was utilized to predict the heat stress. Calibration was conducted using linear regression to attribute particular thermal sensation votes to correspondent mPET values. It was found that thermal sensation can be affected by factors such as psychological, behavioral, and physiological. The courtyard’s form provides a passive cooling effect, stabilizing interior thermal sensation, with attenuation peaks of 6.4 °C on a cold day and 5.0 °C on a hot day. Courtyards are an alternative passive strategy to improve thermal ambience in tropical climate, counterbalancing climate change.

scholarly journals Using BIM capabilities to improve existing building energy modelling practices

2017 ◽  
Vol 24 (2) ◽  
pp. 190-208 ◽  
Author(s):  
Tristan Gerrish ◽  
Kirti Ruikar ◽  
Malcolm Cook ◽  
Mark Johnson ◽  
Mark Phillip
Keyword(s):  
Design Process ◽  
Building Energy ◽  
Energy Performance ◽  
Information Storage ◽  
Successful Implementation ◽  
Design Development ◽  
Content Type ◽  
Design Procedures ◽  
Energy Modelling ◽  
Building Project

Purpose The purpose of this paper is to present a review of the implications building information modelling (BIM) is having on the building energy modelling (BEM) and design of buildings. It addresses the issues surrounding exchange of information throughout the design process, and where BIM may be useful in contributing to effective design progression and information availability. Design/methodology/approach Through review of current design procedures and examination of the concurrency between architectural and thermophysical design modelling, a procedure for information generation relevant to design stakeholders is created, and applied to a high-performance building project currently under development. Findings The extents of information key to the successful design of a buildings energy performance in relation to its architectural objectives are given, with indication of the level of development required at each stage of the design process. Practical implications BIM offers an extensible medium for parametric information storage, and its implementation in design development offers the capability to include BEM parameter-integrated construction information. The extent of information required for accurate BEM at stages of a building’s design is key to understanding how best to record performance information in a BIM environment. Originality/value This paper contributes to the discussion around the integration of concurrent design procedures and a common data environment. It presents a framework for the creation and dissemination of information during design, exemplifies this on a real building project and evaluates the barriers experienced in successful implementation.

Evaluation of the Impact of Window Shading on the Anti-Insulation Phenomenon in Building Energy Use

MRS Advances ◽  
2018 ◽  
Vol 3 (34-35) ◽  
pp. 2063-2073
Author(s):  
R. K. Rabasoma ◽  
D. D. Serame ◽  
O.T. Masoso
Keyword(s):  
Solar Radiation ◽  
Energy Use ◽  
Common Knowledge ◽  
Building Design ◽  
Building Energy ◽  
Climatic Regions ◽  
Building Energy Use ◽  
The World ◽  
Building Design Decisions ◽  
The Impact

ABSTRACTBefore 2008, it was common knowledge around the world that insulation always saved air conditioning energy in buildings. In 2008 a phenomenon called anti-insulation was brought to light by Masoso & Grobler. They demonstrated that there are instances when insulation materials in a building directly increase building energy use. Researchers around the world then echoed the message. Recent work by some of the authors investigated the anti-insulation phenomenon in summer and winter for both hot climatic regions (Botswana) and cold climatic regions (Canada). Their study concluded that there is still a mystery of exaggerated sources of heat inside the building aggravating the anti-insulation phenomenon. They hypothesized that incident solar radiation through the windows could be one of the causes. This paper therefore focuses on eliminating direct solar radiation through windows by applying external shadings on a previously anti-insulation building. The energy saved is evaluated and the possible reversal of anti-insulation studied. The study is useful to energy policy makers and the building industry as it showcases the existence of a possible silent killer (anti-insulation) and demonstrates that investing large sums of money on insulation in buildings may not be the most economic thing to do in building design decisions.

scholarly journals The Effects of Service-Based Learning on Metacognitive Strategies During an Engineering Design Task

2011 ◽  
Vol 6 (2) ◽  
pp. 1-18 ◽  
Author(s):  
Gay Lemons ◽  
Adam Carberry ◽  
Christopher Swan ◽  
Linda Jarvin
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Engineering Students ◽  
Large Body ◽  
Building Design ◽  
Learning Activities ◽  
Self Report ◽  
Design Task ◽  
Service Activities ◽  
The Impact

Service-based learning has become an emerging pedagogical tool for engineering education. Although there is a large body of literature reporting the benefits of service activities, most studies have relied on self-report measures and generalized learning contributions. Our evaluation went beyond self-perceptions by investigating the impact that service-based learning programs had on specific cognitive elements of engineering design. The primary goal of this project was to investigate what effects, if any, service activities had on the engineering design process. Verbal protocols were collected from ten engineering students during an open-ended, model-building design task. The five service students and five non-service students also completed post-task interviews and reflection papers. The students in our sample who had participated in service-based learning activities voiced more metacognitive phrases, demonstrated more accurate task analysis and clearer strategic planning skills, were more skilled at discriminating useful from superfluous information, and had a better understanding of clients’ needs and constraints. From our sample, it appears that participation in service-based learning activities enhances the design process of engineering students.

scholarly journals The Assessment of Building Energy Functionality in the Integrated Building Design

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 53
Author(s):  
Vilūnė Lapinskienė ◽  
Violeta Motuzienė ◽  
Artur Rogoža
Keyword(s):  
Design Process ◽  
Quality Function Deployment ◽  
New Technology ◽  
Building Design ◽  
Building Energy ◽  
Design Problems ◽  
Sustainability Challenges ◽  
Energy Functionality ◽  
Future Practice

Buildings are significant contributors to energy-related sustainability challenges and a sustainable future. Practice shows—that the traditional building design process is becoming ineffective and will no longer be able to meet the determined requirements and standards of low energy architecture. The aim of this research is to introduce and validate the newly developed technology of building design concept, which integrates Quality Function Deployment (QFD) and Axiomatic Design (AD) methods. The proposed technology eliminates the traditional building design problems, ensures a smooth Integrated Building Design (IBD) process and matches the needs of the customer and the whole building design team. The new technology also provides a quicker and more effective way to find a sustainable and customer-orientated solution. Validation of the technology on the case study has shown that the energy functionality of the building proved to be superior to buildings, created during traditional building design process.

scholarly journals Benchmarking and screening new building energy models in the Toronto context

2021 ◽  
Author(s):  
Jennifer Harmer
Keyword(s):  
Building Design ◽  
Building Energy ◽  
Feedback Mechanism ◽  
Building Energy Modeling ◽  
Support Design ◽  
Policy Makers ◽  
Building Models ◽  
Energy Modelling ◽  
And Performance ◽  
Design Guidance

Building energy modeling is a well-established field but there is a lack of research to support design guidance and energy benchmarking using simulated results. This study presents a methodology for collecting information about planned buildings in Toronto from uploaded building energy modelling files, to be used as a basis of comparison for future models. The methodology includes the development of an algorithm for automating the generation of baseline building models. Key building design and performance characteristics are identified for inclusion in a database of new buildings in Toronto, and a feedback mechanism, to provide design guidance through comparative analysis and program screening, is detailed. The resultant database can be used by individual building design teams, urban planners, or policy-makers, as they work together to reduce the greenhouse gas emissions in Toronto through increased energy efficiency in the built environment.

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