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Author = Hajdukiewicz, Magdalena;
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Displaying Results 1 - 25 of 32 on page 1 of 2
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A novel ROM methodology to support the estimation of the energy savings under the Measurement and Verification protocol
(2020)
Piccinini, Alessandro; Hajdukiewicz, Magdalena; D'Angelo, Letizia; Blanes, Luis M....
A novel ROM methodology to support the estimation of the energy savings under the Measurement and Verification protocol
(2020)
Piccinini, Alessandro; Hajdukiewicz, Magdalena; D'Angelo, Letizia; Blanes, Luis M.; Keane, Marcus M.
Abstract:
This paper presents a novel Reduced Order grey box Model (ROM) methodology, based on a ResistorCapacitor (RC) network, which supports the creation of the baseline energy consumption and the estimation of energy savings due to Energy Conservation Measures (ECMs) under the Measurement and Verification protocol. Within this scope, a description of the RC network, including a calculation of the parameters’ needed to execute the ROM, are presented. This ROM methodology is demonstrated on an educational building located in Sant Cugat, Spain as part of the H2020 GEOFIT project. The results presented in this paper demonstrate that the ROM is sufficiently accurate for the creation of the baseline energy consumption and for estimating the energy savings of different ECMs.
This research work was funded by the Irish Research Council (IRC) - R2M Solution S.r.l Enterprise Partnership Scheme Postgraduate Scholarship 2017 under project ID EPSPG/2017/359 and the European Union under the GEOFIT p...
http://hdl.handle.net/10379/16175
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Achieving nearly zero-energy buildings - A lifecycle assessment approach to retrofitting buildings
(2019)
Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena
Achieving nearly zero-energy buildings - A lifecycle assessment approach to retrofitting buildings
(2019)
Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena
Abstract:
It is now widely recognised in the academic and business worlds that energy efficiency in buildings provides significant environmental and economic opportunities, but also challenges. The building sector offers considerable opportunities to reduce Europe’s energy consumption and carbon emissions. With the percentage of new buildings representing 1% of the total building stock and the low efficiency levels of the older building stock, retrofitting is recognised as the most immediate, pressing, and cost effective mechanism to reduce energy consumption and carbon emissions in the building and construction sector. It is necessary to double or triple the current retrofitting rate to reach EU short and long term energy reduction goals. However, given the age, diversity, size of the Irish and EU building stock, and the economic variables associated, retrofitting to meet sustainability targets on time represents a big challenge. This paper focuses on the current findings on the most effecti...
http://hdl.handle.net/10379/15129
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An automated standard-based life cycle quality inspection methodology for smart precast concrete solutions in buildings
(2019)
Hajdukiewicz, Magdalena; Goggins, Jamie; de la Torre, Oscar; Holleran, Dave; Keane, Mar...
An automated standard-based life cycle quality inspection methodology for smart precast concrete solutions in buildings
(2019)
Hajdukiewicz, Magdalena; Goggins, Jamie; de la Torre, Oscar; Holleran, Dave; Keane, Marcus M.
Abstract:
Built2Spec research project brought together a new and breakthrough set of tools in order to improve construction quality inspection processes. These can be put into the hands of construction stakeholders to help meet Europe’s energy efficiency targets, standards for constructing and retrofitting buildings, and related policy ambitions. This paper focuses on the automated standard-based life cycle quality inspections for precast concrete structural building elements that can be enhanced by leveraging a range of different technologies. Particular attention is placed on the use of embedded sensors in the precast concrete structural building elements as a tool to support quality assurance of these elements. Starting with the design, through manufacturing, delivery to site, installation, commissioning and operation until the end of life, the performance of precast concrete building elements is monitored and controlled to ensure their compliance with specifications, standards and guideli...
http://hdl.handle.net/10379/15333
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An Indoor Environmental Quality (IEQ) assessment of a partially-retrofitted university building
(2019)
Zuhaib, Sheikh; Manton, Richard; Griffin, Corey; Hajdukiewicz, Magdalena; Keane, Marcus...
An Indoor Environmental Quality (IEQ) assessment of a partially-retrofitted university building
(2019)
Zuhaib, Sheikh; Manton, Richard; Griffin, Corey; Hajdukiewicz, Magdalena; Keane, Marcus M.; Goggins, Jamie
Abstract:
Achieving standards-based Indoor Environmental Quality (IEQ) in existing buildings is growing steadily due to the strong demand for deep retrofits in Europe. Existing non-domestic buildings pose challenges mainly due to occupancy patterns, lack of personal control over comfort and outdated building structures. Renovations of many post-war non-domestic buildings (>35 years old) have faced technical and financial challenges. Consequently, these buildings are often only partially retrofitted, which are often ad-hoc in nature. This paper describes the evaluation process of indoor environmental conditions in a partially-retrofitted university building in Galway (Ireland) originally built during the 1970s and partially retrofit in 2005. The research assesses criteria outlined in EN 15251 and draws on methods from ASHRAE 55 and CBE IEQ survey. Occupant surveys complemented by physical measurements were used to assess the compliance of IEQ parameters for thermal, visual and acoustic comf...
http://hdl.handle.net/10379/15336
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Application of a staged automated calibration methodology to a partially-retrofitted university building energy model
(2019)
Zuhaib, Sheikh; Hajdukiewicz, Magdalena; Goggins, Jamie
Application of a staged automated calibration methodology to a partially-retrofitted university building energy model
(2019)
Zuhaib, Sheikh; Hajdukiewicz, Magdalena; Goggins, Jamie
Abstract:
Deep-retrofit planning for existing buildings demands high accuracy in energy modelling prediction that minimises the gap between actual and simulated scenarios. A large set of interacting variables and uncertainties in energy performance modelling causes perturbations that can be minimised via model calibration. In this work, a novel multi-stage automated calibration methodology was developed using a case study of a partially-retrofitted university building (>35 yrs old) in Ireland. The methodology enables the analysis of models for Indoor Environmental Quality (IEQ) variables along with energy demand. Due to the higher number of uncertainties in the model, a sensitivity analysis was conducted on the model that is both calibrated and validated as per ASHRAE Guide 14 indices of Cv(RMSE) and NMBE. The calibration process was automated using the optimisation algorithm NSGA-II with two sets of reference data i.e. monthly utility and hourly indoor air temperature. Results demonstrate...
http://hdl.handle.net/10379/15332
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Assessing aerodynamic performance in cycling using computational fluid dynamics
(2016)
Mannion, Paul; Clifford, Eoghan; Blocken, Bert; Hajdukiewicz, Magdalena
Assessing aerodynamic performance in cycling using computational fluid dynamics
(2016)
Mannion, Paul; Clifford, Eoghan; Blocken, Bert; Hajdukiewicz, Magdalena
Abstract:
Aerodynamic resistance is one of the leading challenges to overcome in elite cycling. To optimize cycling aerodynamics, estimates must first be made by means of wind tunnel testing, computational fluid dynamics or track testing. Computational fluid dynamics (CFD) is an emerging field in analysing cycling aerodynamics. Wind and urban physics create conditions difficult to model in a wind tunnel environment, and while physical track and/or velodrome testing occurs in actual cycling environments, it is difficult to control and quantify all influencing environmental factors. CFD allows for complete control over all model parameters. It also allows for controlled flow conditions to quantify small aerodynamic performance improvements through changes in athlete posture/equipment along with extensive measurement capabilities. Modelling cyclists and other vulnerable road users in urban environments can complement urban designs and strategies to enhance pedestrian/cyclist safety in high wind ...
http://hdl.handle.net/10379/6237
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Attitudes and approaches of Irish retrofit industry professionals towards achieving nearly zero-energy buildings
(2019)
Zuhaib, Sheikh; Manton, Richard; Hajdukiewicz, Magdalena; Keane, Marcus M.; Goggins, Jamie
Attitudes and approaches of Irish retrofit industry professionals towards achieving nearly zero-energy buildings
(2019)
Zuhaib, Sheikh; Manton, Richard; Hajdukiewicz, Magdalena; Keane, Marcus M.; Goggins, Jamie
Abstract:
Abstract Purpose There is profound demand for higher skills and expertise in retrofitting the existing building stock of Europe. The delivery of low- or nearly zero-energy retrofits is highly dependent on technical expertise, adoption of new materials, methods of construction and innovative technologies. Future Irish national building regulations will adopt the Energy Performance of Buildings Directive vision of retrofitting existing buildings to higher energy efficiency standards. Construction industry stakeholders are key for the achievement of energy performance targets. Specifically, the purpose of this paper is to assess the attitudes, approaches and experiences of Irish construction professionals regarding energy efficient buildings, particularly nearly zero-energy buildings (nZEBs). Design/methodology/approach Data were collected through a series of quantitative and qualitative methods, including a survey, a workshop and detailed interviews with professionals in the retrofit...
http://hdl.handle.net/10379/15335
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Behaviour of hybrid concrete lattice girder flat slab system using insitu structural health monitoring
(2016)
Newell, S.; Goggins, Jamie; Hajdukiewicz, Magdalena; Holleran, D.
Behaviour of hybrid concrete lattice girder flat slab system using insitu structural health monitoring
(2016)
Newell, S.; Goggins, Jamie; Hajdukiewicz, Magdalena; Holleran, D.
Abstract:
In recent decades, Structural Health Monitoring (SHM) has emerged as an increasingly important tool in Civil Engineering to understand how structures behave during construction and operation. Although SHM is not a new concept, it is only relatively recently that Civil Engineers have adopted SHM for the design, construction and management of civil engineering structures. One of the key benefits of SHM is the improved understanding of insitu structural behaviour. This paper describes the SHM strategy implemented on a recently constructed building to monitor and record the behaviour of a hybrid concrete lattice girder flat slab floor system. Hybrid concrete construction (HCC) combines insitu and precast concrete to maximise the benefits of both forms of construction. HCC offers many advantages for both the designer and contractor and produces simple, buildable and economic structures which can result in faster, safer construction and reduced costs. Sensors were embedded in both the pre...
http://hdl.handle.net/10379/6232
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Behaviour of hybrid concrete lattice girder flat slab system using insitu structural health monitoring
(2016)
Newell, Shane; Goggins, Jamie; Hajdukiewicz, Magdalena; Holleran, Dave
Behaviour of hybrid concrete lattice girder flat slab system using insitu structural health monitoring
(2016)
Newell, Shane; Goggins, Jamie; Hajdukiewicz, Magdalena; Holleran, Dave
Abstract:
In recent decades, Structural Health Monitoring (SHM) has emerged as an increasingly important tool in Civil Engineering to understand how structures behave during construction and operation. Although SHM is not a new concept, it is only relatively recently that Civil Engineers have adopted SHM for the design, construction and management of civil engineering structures. One of the key benefits of SHM is the improved understanding of insitu structural behaviour. This paper describes the SHM strategy implemented on a recently constructed building to monitor and record the behaviour of a hybrid concrete lattice girder flat slab floor system. Hybrid concrete construction (HCC) combines insitu and precast concrete to maximise the benefits of both forms of construction. HCC offers many advantages for both the designer and contractor and produces simple, buildable and economic structures which can result in faster, safer construction and reduced costs. Sensors were embedded in both the pre...
http://hdl.handle.net/10759/620605
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Calibrated CFD simulation to evaluate thermal comfort in a highly-glazed naturally ventilated room
(2016)
Hajdukiewicz, Magdalena; Geron, Marco; Keane, Marcus M.
Calibrated CFD simulation to evaluate thermal comfort in a highly-glazed naturally ventilated room
(2016)
Hajdukiewicz, Magdalena; Geron, Marco; Keane, Marcus M.
Abstract:
Natural ventilation is a sustainable solution to maintaining healthy and comfortable environmental conditions in buildings. However, the effective design, construction and operation of naturally ventilated buildings require a good understanding of complex airflow patterns caused by the buoyancy and wind effects. The work presented in this article employed a 3D computational fluid dynamics (CFD) analysis in order to investigate environmental conditions and thermal comfort of the occupants of a highly-glazed naturally ventilated meeting room. This analysis was facilitated by the real-time field measurements performed in an operating building, and previously developed formal calibration methodology for reliable CFD models of indoor environments. Since, creating an accurate CFD model of an occupied space in a real-life scenario requires a high level of CFD expertise, trusted experimental data and an ability to interpret model input parameters; the calibration methodology guided towards...
http://hdl.handle.net/10379/6176
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Diagnostics and intervention methods for façade retrofit of post-WWII non-domestic buildings in Europe for energy efficiency
(2016)
Zuhaib, Sheikh; Hajdukiewicz, Magdalena; Keane, Marcus M.; Goggins, Jamie
Diagnostics and intervention methods for façade retrofit of post-WWII non-domestic buildings in Europe for energy efficiency
(2016)
Zuhaib, Sheikh; Hajdukiewicz, Magdalena; Keane, Marcus M.; Goggins, Jamie
Abstract:
The growing demand of deep façade retrofits in refurbishment projects across Europe, is often accompanied by low-energy targets and architectural attributes. Factors like variability in context, material, environment and composite construction types and comfort requirements, often complicate the façade retrofits. It becomes difficult to generalise the method of retrofit for each building case. A proper understanding of the diagnostics and intervention principles improves the overall cognizance of retrofits with other systems and sub-systems. Passive retrofit strategies offer great potential to reduce the energy demand of non-domestic buildings. This paper presents a review of research and passive intervention methods that can act as guiding principles for modern façade retrofits for post-war non-domestic buildings and maintain the integrity of the building to provide higher human comfort levels and improved energy performance.
The authors would like to acknowledge the support of...
http://hdl.handle.net/10379/6234
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Evaluation of various turbulence models to predict indoor conditions in a naturally ventilated room
(2014)
Hajdukiewicz, Magdalena; Geron, M.; Keane, MM
Evaluation of various turbulence models to predict indoor conditions in a naturally ventilated room
(2014)
Hajdukiewicz, Magdalena; Geron, M.; Keane, MM
Abstract:
Conference paper
In recent years, Computational Fluid Dynamics (CFD) has become a popular tool in building simulation. However, developing reliable CFD models requires a high level of expertise in fluid dynamics and numerical techniques. Furthermore, choosing the right turbulence model is a crucial issue for an accurate CFD analysis. The objective of this work is to utilise Reynolds Averaged Navier - Stokes (RANS) models to predict airflow patterns and air temperature stratification inside an operating naturally ventilated study room, occupied by a person working on a laptop. The paper is a continuation of a recently published work on CFD model calibration; and explores the performance of various turbulence models to accurately simulate indoor conditions. This is done through a comparison of the simulation results with the measurements in a normally operating building. The results of zero equation, standard k-ε, RNG k-ε, k-ε EARSM, standard k-ω...
http://hdl.handle.net/10379/4603
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Formal Calibration methodology for a CFD model of a naturally ventilated room
(2014)
Hajdukiewicz, Magdalena; Walsh, Michael; Keane, Marcus M.
Formal Calibration methodology for a CFD model of a naturally ventilated room
(2014)
Hajdukiewicz, Magdalena; Walsh, Michael; Keane, Marcus M.
Abstract:
Conference paper
This paper describes a systematic methodology for the development of calibrated thermodynamic Computational Fluid Dynamics (CFD) models for controlled environments in buildings utilising wireless sensor networks. The calibrated CFD model will be used to optimise the positions of the physical sensors for the management of energy efficient internal environments by building operators. This methodology could result in significant energy and economic savings and lead to more accurately controlled internal environments. For the simulation of an internal environment, a CFD model of one of the study rooms in the Nursing Library at the National University of Ireland in Galway, Ireland has been developed. Data obtained from an on-site weather station and wireless sensors provided boundary conditions for the CFD model. A well-positioned wireless sensor network collected real-time data at multiple locations within the indoor environment. The data were compared with CFD mode...
http://hdl.handle.net/10379/4601
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Formal calibration methodology for CFD model development to support the operation of energy efficient buildings
(2014)
Hajdukiewicz, Magdalena; Keane, MM; O Flynn, B; O Grady, W
Formal calibration methodology for CFD model development to support the operation of energy efficient buildings
(2014)
Hajdukiewicz, Magdalena; Keane, MM; O Flynn, B; O Grady, W
Abstract:
Conference paper
Computational Fluid Dynamics (CFD) is a robust tool for modelling interactions within and between fluids and solids. CFD can help understand and predict phenomena that are difficult to test experimentally leading to cleaner, healthier, and better controlled internal environments. In this research a CFD model of the internal environment of an office space will be developed. The CFD model will then be calibrated using real data taken from a well-positioned wireless sensor network and weather station. The work focuses on developing systematically calibrated CFD models for controlled environments that include clean rooms, health environments, pharmaceutical storage rooms and information and communication technology locations, utilising wireless sensor networks. The calibrated CFD model will be used to optimise the positions of the physical sensors for the control of energy efficient internal environments by building operators. This could result in significant energy...
http://hdl.handle.net/10379/4600
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Formal calibration methodology for CFD models of naturally ventilated indoor environments
(2016)
Hajdukiewicz, Magdalena; Geron, Marco; Keane, Marcus M.
Formal calibration methodology for CFD models of naturally ventilated indoor environments
(2016)
Hajdukiewicz, Magdalena; Geron, Marco; Keane, Marcus M.
Abstract:
Well planned natural ventilation strategies and systems in the built environments may provide healthy and comfortable indoor conditions, while contributing to a significant reduction in the energy consumed by buildings. Computational Fluid Dynamics (CFD) is particularly suited for modelling indoor conditions in naturally ventilated spaces, which are difficult to predict using other types of building simulation tools. Hence, accurate and reliable CFD models of naturally ventilated indoor spaces are necessary to support the effective design and operation of indoor environments in buildings. This paper presents a formal calibration methodology for the development of CFD models of naturally ventilated indoor environments. The methodology explains how to qualitatively and quantitatively verify and validate CFD models, including parametric analysis utilising the response surface technique to support a robust calibration process. The proposed methodology is demonstrated on a naturally vent...
http://hdl.handle.net/10379/6177
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Formal calibration methodology relating to CFD models of naturally ventilated internal environments
(2013)
Hajdukiewicz, Magdalena
Formal calibration methodology relating to CFD models of naturally ventilated internal environments
(2013)
Hajdukiewicz, Magdalena
Abstract:
The building sector is responsible for 40% of total global energy consumption. Half of the energy consumed by buildings relates to heating, ventilation and air conditioning (HVAC) systems. Natural ventilation can provide a sustainable solution aimed at maintaining healthy and comfortable environmental conditions in buildings. However, the effective design and operation of new and retrofitted buildings that incorporate natural ventilation systems is often complex and requires the utilisation of accredited simulation tools and reliable field measurements. The Network Embedded Systems (NEMBES) project is a Higher Education Authority, Ireland (HEA) funded inter-institutional and multi-disciplinary research program that examines the application of network embedded systems in the design and management of built environments, including the health, facilities management and transportation sectors. This research forms a core part of the NEMBES project through the development of reliable dat...
http://hdl.handle.net/10379/3928
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Generating robust algorithms for energy efficient lighting as a performance aspect of the building operational energy optimisation framework
(2016)
Ganguly, Turya; Hajdukiewicz, Magdalena; Keane, Marcus; Goggins, Jamie
Generating robust algorithms for energy efficient lighting as a performance aspect of the building operational energy optimisation framework
(2016)
Ganguly, Turya; Hajdukiewicz, Magdalena; Keane, Marcus; Goggins, Jamie
Abstract:
This paper presents a part of the ongoing research in the nZEB-Retrofit project in the National University of Ireland, Galway. This research aims to optimise residential building performance by enhancing the key performance metrics of certain performance aspects. In this paper, one of these aspects (lighting) has been discussed, algorithms developed and tested on the living room of a semi-detached dwelling in Dublin. The main objective of the paper is to formulate algorithms to: 1) calculate the power required to illuminate a space up to standard CIBSE design maintenance, 2) calculate the energy consumption and costs per year for lighting that space, and 3) determine power loss and potential energy savings from lighting. For this purpose, key performance indicators (KPIs) that would facilitate the optimisation process have been selected from several national and international standards and guides. The key findings of this paper are that (1) the difference between the provided power ...
http://hdl.handle.net/10379/6233
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How accurate are Energy Performance Certificates indicated energy savings of building retrofits?
(2016)
Moran, P.; Hajdukiewicz, Magdalena; Goggins, Jamie
How accurate are Energy Performance Certificates indicated energy savings of building retrofits?
(2016)
Moran, P.; Hajdukiewicz, Magdalena; Goggins, Jamie
Abstract:
With the impending nearly zero energy building (NZEB) regulations for residential new builds and retrofits for the European Union (EU) housing stock and the percentage of new buildings relative to existing buildings is increasing at a rate of only 1% per year, retrofitting is recognised as the most immediate, pressing and cost effective mechanism to reduce energy consumption and carbon emissions in the building and construction sector. Currently, an Irish residential building Energy Performance Certificates (EPC) indicates the estimation of a buildings’ annual energy usage that is assessed by the Dwelling Energy Assessment Procedure (DEAP). DEAP is the standard method for assessing the energy savings that are made by a residential building through retrofitting its technical characteristics to greater energy efficiency standards. This paper presents the pre-retrofit DEAP results of a sample set of urban social houses in Ireland and compares them to the actual energy usage of the hous...
http://hdl.handle.net/10379/6235
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Improving cfd prediction of drag on paralympic tandem athletes: influence of grid resolution and turbulence model
(2018)
Mannion, Paul; Toparlar, Yasin; Blocken, Bert; Hajdukiewicz, Magdalena; Andrianne, Thom...
Improving cfd prediction of drag on paralympic tandem athletes: influence of grid resolution and turbulence model
(2018)
Mannion, Paul; Toparlar, Yasin; Blocken, Bert; Hajdukiewicz, Magdalena; Andrianne, Thomas; Clifford, Eoghan
Abstract:
Tandem cycling enables visually impaired athletes to compete in cycling in the Paralympics. Tandem aerodynamics can be analysed by track measurements, wind-tunnel experiments and numerical simulations with computational fluid dynamics (CFD). However, the proximity of the pilot (front) and the stoker (rear) and the associated strong aerodynamic interactions between both athletes present substantial challenges for CFD simulations, the results of which can be very sensitive to computational parameters such as grid topology and turbulence model. To the best of our knowledge, this paper presents the first CFD and wind-tunnel investigation on tandem cycling aerodynamics. The study analyses the influence of the CFD grid topology and the turbulence model on the aerodynamic forces on pilot and stoker and compares the results with wind-tunnel measurements. It is shown that certain combinations of grid topology and turbulence model give trends that are opposite to those shown by other combinat...
http://hdl.handle.net/10379/12636
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Lifecycle environmental and economic performance of nearly zero energy buildings (NZEB) in Ireland
(2019)
Goggins, Jamie; Moran, Paul; Armstrong, Alan; Hajdukiewicz, Magdalena
Lifecycle environmental and economic performance of nearly zero energy buildings (NZEB) in Ireland
(2019)
Goggins, Jamie; Moran, Paul; Armstrong, Alan; Hajdukiewicz, Magdalena
Abstract:
Directives in the European Union are ensuring that buildings in this region are moving towards nearly zero energy buildings (NZEB). For countries like Ireland, which has a temperate oceanic climate, a key to achieving NZEB is to have high thermal and air tightness performances of the building envelope. Consequently, as the operational energy of the building reduces, the embodied energy (and embodied global warming potential) typically increases as a proportion of the lifecycle energy of the building due to increased embodied energy of the building envelope and the lower operational energy. In order to assess if a design strategy is in fact sustainable, it is becoming essential to evaluate environmental and economic LCA of building design strategies. This paper presents the outcomes of a number of case study buildings in Ireland, which focuses on the full environmental and economic lifecycle assessment of buildings to assess the impact changes in building regulations are having on t...
http://hdl.handle.net/10379/15115
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Methodology for quality checks for energy efficient buildings
(2017)
Hajdukiewicz, Magdalena; Goggins, Jamie; Keane, Marcus M.
Methodology for quality checks for energy efficient buildings
(2017)
Hajdukiewicz, Magdalena; Goggins, Jamie; Keane, Marcus M.
Abstract:
The built environment accounts for more than 40% of the overall energy consumption and 36% of the overall CO2 emissions in Europe. Moreover, statistics show that construction and the upkeep of European buildings and infrastructure is the largest industry worldwide accounting for approximately 10% of global GDP. A clear gap exists in the availability of structured and systematic mechanisms to support the decision-making, execution and commissioning phases of construction processes. This can result in defects that degrade the intended energy and comfort performance of new structures and retrofits. Such errors also weaken the trust and confidence in the implementation of the potentially higher-cost sustainable designs, construction and retrofit actions. This paper presents the overview, objectives and impact of the Built2Spec project, which brings together a new and breakthrough set of technological advances for self-inspection and quality assurance for energy efficient buildings. The ...
http://hdl.handle.net/10379/6396
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Real-time control of occupants thermal comfort in buildings
(2016)
Hajdukiewicz, Magdalena; O'Connor, Padraig; O'Neill, Colin; Coakley, Daniel; ...
Real-time control of occupants thermal comfort in buildings
(2016)
Hajdukiewicz, Magdalena; O'Connor, Padraig; O'Neill, Colin; Coakley, Daniel; Keane, Marcus M.; Clifford, Eoghan
Abstract:
Providing satisfactory indoor environmental conditions, air quality and thermal comfort through adequate ventilation is crucial in maintaining safe, healthy and comfortable buildings. Since, heating, ventilation and air conditioning (HVAC) systems are significant contributors to energy consumed in buildings, natural ventilation solutions are being increasingly utilised.This study investigated the use of natural ventilation as a solution to maintaining healthy and comfortable environmental conditions in a large mixed-use demonstrator building, the Engineering Building (EB) at the National University of Ireland (NUI) Galway in Ireland. The results presented in this paper provide valuable information about the operation of the building and will allow for future validation of computational models to test different building operation strategies.
http://hdl.handle.net/10379/6238
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Real-time monitoring framework to investigate the environmental and structural performance of buildings
(2016)
Hajdukiewicz, Magdalena; Byrne, David; Keane, Marcus M.; Goggins, Jamie
Real-time monitoring framework to investigate the environmental and structural performance of buildings
(2016)
Hajdukiewicz, Magdalena; Byrne, David; Keane, Marcus M.; Goggins, Jamie
Abstract:
Journal article
Energy provides safety, comfort and mobility to people, and is essential for industrial, commercial and societal growth. However, generation and consumption of energy give rise of greenhouse gases and various air pollutants, which have a negative impact on the natural environment and global climate. The building sector is responsible for about 40% of the energy consumption and related CO2 emissions worldwide. In order to reduce the environmental impact of buildings, energy efficient measures must be taken into account when designing, operating and retrofitting buildings. It is imperative that holistic consideration is given to the structural, environmental and energy aspects in buildings through their life. In order to maintain safe, healthy and comfortable sustainable buildings, assurance of the structural and environmental building performance must be given not only at the design, but also commissioning and operation stages of its life cycle. This paper presen...
http://hdl.handle.net/10379/6178
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Real-time monitoring of a hybrid precast and in situ concrete flat slab system
(2014)
Goggins, Jamie; Newell, S; King, D; Hajdukiewicz, Magdalena
Real-time monitoring of a hybrid precast and in situ concrete flat slab system
(2014)
Goggins, Jamie; Newell, S; King, D; Hajdukiewicz, Magdalena
Abstract:
Conference paper
This paper presents a scheme developed for instrumentation and monitoring of the structural performance of a hybrid precast and in situ concrete flat slab system employed in an educational building. The system contains a precast plate flooring slab, which is composed of a thin reinforced concrete plate incorporating a steel lattice girder and all reinforcement required by design. A top mat of reinforcement is placed on site, as well as reinforcing stitching bars across the precast slab joints to ensure shear transfer and two way bending action. The concrete topping is then placed on site. Preliminary data obtained from the instrumented building are discussed. Continuous monitoring of the data will allow long term effects, such as creep, to also be monitored and compared with design guidelines.
http://hdl.handle.net/10379/4604
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Real-time monitoring of a hybrid precast and in-situ concrete flat slab system
(2016)
Goggins, Jamie; Newell, Shane; King, Daniel; Hajdukiewicz, Magdalena
Real-time monitoring of a hybrid precast and in-situ concrete flat slab system
(2016)
Goggins, Jamie; Newell, Shane; King, Daniel; Hajdukiewicz, Magdalena
Abstract:
This paper presents a scheme developed for instrumentation and monitoring of the structural performance of a hybrid precast and in-situ concrete flat slab system employed in an educational building. The system contains a precast plate flooring slab, which is composed of a thin reinforced concrete plate incorporating a steel lattice girder and all reinforcement required by design. A top mat of reinforcement is placed on site, as well as reinforcing stitching bars across the precast slab joints to ensure shear transfer and two way bending action. The concrete topping is then placed on site. Preliminary data obtained from the instrumented building are discussed. Continuous monitoring of the data will allow long term effects, such as creep, to also be monitored and compared with design guidelines.
http://hdl.handle.net/10759/620602
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