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Articles 151 - 180 of 255
Full-Text Articles in Physics
Optimal Control Strategies For Passive Heating And Cooling Elements Reduce Loads By Two-Thirds In The Adaptive Reuse Of A San Francisco Bay Area Office, Alexandra Rempel, Serena Lim
Optimal Control Strategies For Passive Heating And Cooling Elements Reduce Loads By Two-Thirds In The Adaptive Reuse Of A San Francisco Bay Area Office, Alexandra Rempel, Serena Lim
International Building Physics Conference 2018
Housing crises in urban centers and growing climate concerns are encouraging city planners and building owners to explore the conversion of commercial buildings into energy-efcient dwellings. Passive solar heating, shading, and natural ventilation are attractive in such adaptive reuse projects since they minimize operational energy, but they sufer from the perception of limited efectiveness, and passive heating is ofen disregarded entirely in cloudy climates. At the same time, passive heating has recently shown promise in the cloudy winters of western Oregon and upstate New York, allowing the San Francisco Bay area to provide an excellent opportunity for further exploration. Passive …
An Implementation For Transforming A Home Energy Management System To A Multi-Agent System, Helia Zandi, Michael Starke, Teja Kuruganti
An Implementation For Transforming A Home Energy Management System To A Multi-Agent System, Helia Zandi, Michael Starke, Teja Kuruganti
International Building Physics Conference 2018
In the United States, 41% of produced energy is consumed by the building sector, i.e. residential and commercial buildings (Building Energy Data Book, Buildings Sector, US Department of Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies Office, 2012. n.d.). The anticipation is that Home Energy Management Systems (HEMS) will support energy efficiency gains through control of the devices in an optimal fashion. New opportunities are offering the ability to integrate grid type controls and the most suitable way to perform these controls is through a multi-agent system (MAS). In this paper, approaches on supporting a HEMS and MAS …
Sensing And Information Technologies For The Environment (Site); Hardware And Software Innovations In Mobile Sensing Technologies, Munitxa Maider, Elie Bou-Zeid, Biayna Bogosian, Abdulghafar Al Tair, David Radcliff, Scott Fisher, Youngryel Ryu
Sensing And Information Technologies For The Environment (Site); Hardware And Software Innovations In Mobile Sensing Technologies, Munitxa Maider, Elie Bou-Zeid, Biayna Bogosian, Abdulghafar Al Tair, David Radcliff, Scott Fisher, Youngryel Ryu
International Building Physics Conference 2018
This research focuses on the development and integration of low-cost Mobile Urban Sensing Technologies (MUST) and immersive environmental data exploration mechanisms with the ambition to inform citizens about their environments and aid scientists in uncovering the relations between the surface attributes and the urban environment. We propose to use 3D immersive environmental visualization techniques to enable a user-centered interactive analysis and rationalization of the available urban environmental data in relation to further urban attributes. With this ambition, we have developed three mobile apps that explore three strategies of Augmented Reality (AR) 3D visualizations of urban environmental data. While some data …
A Novel Methodology To Spatially Evaluate Dgp Classes By Means Of Vertical Illuminances. Preliminary Results, Luigi Giovannini, Fabio Favoino, Valerio R.M. Lo Verso, Anna Pellegrino, Valentina Serra
A Novel Methodology To Spatially Evaluate Dgp Classes By Means Of Vertical Illuminances. Preliminary Results, Luigi Giovannini, Fabio Favoino, Valerio R.M. Lo Verso, Anna Pellegrino, Valentina Serra
International Building Physics Conference 2018
A novel methodology to overcome the main limit of the Daylight Glare Probability DGP (i.e. the heavy computational time for an annual analysis of the DGP profile in one point) is presented. This uses a proxy based on the vertical illuminance (Ev) at the eye level. To do so, the most suitable value of Ev, to substitute DGP, is found by means of a comparison to the corresponding DGP value through a fault-detection diagnosis technique. The methodology was applied to a representative enclosed office with one South-facing window (Window-to-Wall Ratio of 50%) located in Turin. The glazing was assumed to …
Daylight Availability In A Room Equipped With Pcm Window, Dominika Knera, Dariusz Heim
Daylight Availability In A Room Equipped With Pcm Window, Dominika Knera, Dariusz Heim
International Building Physics Conference 2018
The increase in building energy performance mainly focused on the improvement of physical properties (thermal and optical) of individual components of building envelope. Very good isolation parameters can be easily achieved for opaque elements like walls and roofs. However, improvement of glazed component parameters is still required. Improving thermophysical properties of window can be achieved using phase change material (PCM). Presented work is a part of extensive research project including the analysis and experimental investigation of window integrated with PCM layer. This modification changes the thermal properties of glass unit and effects on visible light transmission through the window. The …
Comparative Study Of Different Design Configurations Based On The Daylight And Visual Comfort Performance Of Electrochromic Glass In A Side-Lit Office Building, Amir Hosseinzadeh Zarrabi, Mona Azarbayjani, Armin Amirazar, Roshanak Asharafi
Comparative Study Of Different Design Configurations Based On The Daylight And Visual Comfort Performance Of Electrochromic Glass In A Side-Lit Office Building, Amir Hosseinzadeh Zarrabi, Mona Azarbayjani, Armin Amirazar, Roshanak Asharafi
International Building Physics Conference 2018
The objective of this research is to demonstrate the application of an optimization framework to assess and improve the impacts of workstation properties in relation to the performance of electrochromic glass regarding daylight and visual comfort. This framework is executed through a simulation-based parametric modeling workflow of an open-plan office to optimize partition layout, height, direction to windows, and materiality in response to annual glare probability (DGP) and climate-based daylighting metrics. In this paper, different office layouts equipped with Electrochromic glass, located in a mixed-humid climate has been simulated with DIVA plug-in for Rhinoceros/grasshopper software to maximize the daylight and …
Lighting Quality Study Of Shopping Malls In China Based On The Evaluation Experiment, Rui Dang, Yanhui Bu, Qingchen Wang, Gang Liu1
Lighting Quality Study Of Shopping Malls In China Based On The Evaluation Experiment, Rui Dang, Yanhui Bu, Qingchen Wang, Gang Liu1
International Building Physics Conference 2018
The lighting environment of the shopping malls will greatly influence the customer's visual comfort and product sales. This experiment studied the lighting environment of jewelry stores with the highest lighting energy consumption in shopping malls. The jewelry store scene which was built in the Key Laboratory of Building Environment Simulation had a total of 150 lighting conditions. Then, we measured lighting parameters, and subjective evaluation of lighting quality (including lighting comfort and commodities display effect) with 30 participants were carried out. We analyzed the experimental data to get the influence law of lighting parameters on lighting quality. Finally, this paper …
Development Of An Electric-Driven Smart Window Model For Visual Comfort Assessment, Michelangelo Scorpio, Giuseppina Iuliano, Antonio Rosato, Sergio Sibilio, Luigi Maffei, Giuseppe Peter Vanoli, Manuela Almeida
Development Of An Electric-Driven Smart Window Model For Visual Comfort Assessment, Michelangelo Scorpio, Giuseppina Iuliano, Antonio Rosato, Sergio Sibilio, Luigi Maffei, Giuseppe Peter Vanoli, Manuela Almeida
International Building Physics Conference 2018
Smart windows, especially those electric-driven, represent one of the most advanced technologies for controlling solar radiation. For a correct use, it is necessary to understand their real behaviour through in-situ measurements on full-scale application as well as calibrating and validating visual simulation models capable of predicting their performances. In this paper, the preliminary results of current research activities aimed at developing simulation models of electric-driven full-scale glazing are presented. The research activities started with the assessment of the visible solar transmittance as a function of light incident angle through in-situ measurements; different models, with related values, of the visible solar …
Thermal Performance Of An Electric-Driven Smart Window: Experiments In A Full-Scale Test Room And Simulation Model, Giovanni Ciampi, Antonio Rosato, Sergio Sibilio, Giuseppe Peter Vanoli, Manuela Almeida, Luigi Maffei
Thermal Performance Of An Electric-Driven Smart Window: Experiments In A Full-Scale Test Room And Simulation Model, Giovanni Ciampi, Antonio Rosato, Sergio Sibilio, Giuseppe Peter Vanoli, Manuela Almeida, Luigi Maffei
International Building Physics Conference 2018
This paper reports the results of experimental tests and numerical simulations aimed at evaluating the performance of an electric-driven smart window with respect to solar control in buildings. The experimental performances of the electric-driven smart window were evaluated using a south oriented full scale experimental facility designed and realized. The tests were carried out during the summer under real sky conditions upon varying the state of the electricdriven smart window (clear and milky). In the first part of the paper, the experimental results are discussed in terms of surface temperature of glazings as well as indoor air temperature in order …
Application Of Radiant Floor Heating In Large Space Buildings With Significant Cold Air Infiltration Through Door Openings, Gang Liu, Siyu Cheng, Yi Xu, Kuixing Liu
Application Of Radiant Floor Heating In Large Space Buildings With Significant Cold Air Infiltration Through Door Openings, Gang Liu, Siyu Cheng, Yi Xu, Kuixing Liu
International Building Physics Conference 2018
Radiant Floor Heating System (RFHS) has been commonly used in railway stations in cold regions of China for its advantages in thermal comfort and energy efficiency. However, the uneven distribution and extremely cold area of the heating floor, caused by cold air infiltration through door openings, are commonly found in our filed measurements. This impact is not considered in the standardized design methods, resulting in an underestimation of the design heat flux. In this paper, CFD simulations are used to quantify the impacts of natural infiltration on surface heat transfer process. Model validation was made against field measurements. 13 simulations …
Evaluating The Hygrothermal Performance Of Wooden Beam Heads In 19th Century Town Houses Using In-Situ Measurements, Paul Wegerer, Thomas Bednar
Evaluating The Hygrothermal Performance Of Wooden Beam Heads In 19th Century Town Houses Using In-Situ Measurements, Paul Wegerer, Thomas Bednar
International Building Physics Conference 2018
Improving the energy efficiency of typical 19th century townhouses in middle Europe the focus on the wooden beam bearing’s hygrothermal performance has become more and more important during the last years. There are several issues for the risk of rotting of the wooden parts of the ceiling, because the retrofitting process of the masonry totally changes the hygrothermal conditions inside the wall. Applying an interior insulation or changing the airtightness of the building envelope as well as the introduced moisture from the retrofitting process lead to a moisture increase inside the masonry and might cause rotting of the ceilings’ wooden …
Experimental Investigations Of Wooden Beam Ends In Masonry With Internal Insulation: Results Contrasting Three Years Of The Experiment, Pavel Kopecký, Kamil Staněk, Michal Bureš, Jan Richter, Jan Tywoniak
Experimental Investigations Of Wooden Beam Ends In Masonry With Internal Insulation: Results Contrasting Three Years Of The Experiment, Pavel Kopecký, Kamil Staněk, Michal Bureš, Jan Richter, Jan Tywoniak
International Building Physics Conference 2018
This paper deals with hygro-thermal performance of wooden beam ends embedded in masonry walls with lime-cement plaster applied on the external side. Three different insulation systems are attached on the internal side of masonry. The real scale experiment has been monitored for three consecutive years. Microclimatic conditions in joist pockets were assessed by VTT mold growth index. The paper shows the influence of two changes of boundary conditions on the microclimate in joist pockets. First, moisture load on the internal side of building enclosure was increased (24 °C, 60 % in winter 2016/2017 instead 20 °C, 50 % in winter …
Renovation With Internal Insulation And Heat Recovery In Real Life– Energy Savings And Risk Of Mold Growth, Martin Morelli, Eva B. Møller
Renovation With Internal Insulation And Heat Recovery In Real Life– Energy Savings And Risk Of Mold Growth, Martin Morelli, Eva B. Møller
International Building Physics Conference 2018
This paper presents a pilot project for renovation of a large residential area; focus is on energy consumption and risk of mold growth. The renovation included internal insulation of walls with capillary active insulation material, balanced mechanical ventilation with heat recovery and insulation of floor towards basement. These types of measures are not completely new and have been used in other buildings as well, however the measures may be either risky regarding mold growth or the effect is uncertain with the specific external wall composition. A pilot project including six apartments was performed to test the measures in these specific …
On The Hygrothermal Behaviour Of Brick Veneer Cladded Timber Frame Walls: The Role Of The Vapour Diffusion Resistance Of The Wind Barrier, Michiel Vanpachtenbeke, Jelle Langmans, Jan Van Den Bulcke, Joris Van Acker, Staf Roels
On The Hygrothermal Behaviour Of Brick Veneer Cladded Timber Frame Walls: The Role Of The Vapour Diffusion Resistance Of The Wind Barrier, Michiel Vanpachtenbeke, Jelle Langmans, Jan Van Den Bulcke, Joris Van Acker, Staf Roels
International Building Physics Conference 2018
The present study looks into the hygrothermal behaviour of timber frame walls with brick veneer cladding in a moderate sea climate. It specifically focuses on the contradictory criterion for the wind barrier when it comes to the risk of interstitial condensation for summer and winter conditions: a vapour open wind barrier is advantageous during an outward vapour flow (i.e. in typical winter conditions for European climates), while during an inward vapour flow (i.e. in summer conditions) a more vapour tight wind barrier is appropriate. Therefore, a field study is conducted on two typical timber frame walls with brick veneer cladding …
Performance Evaluation Of A Highly Insulated Wall To Withstand Mould, Klodian Gradeci, Umberto Berardi
Performance Evaluation Of A Highly Insulated Wall To Withstand Mould, Klodian Gradeci, Umberto Berardi
International Building Physics Conference 2018
In this paper, the performance to withstand mould growth of a highly insulated wall is evaluated by applying a probabilistic-based methodology that accounts for the involved uncertainties and investigates their significance. A sensitivity analysis according to the Morris method is conducted to understand the influence of each parameter and simplify the system representation. Deficiencies in terms of moisture and air leakages are accounted for. The mould growth outcome is evaluated by integrating different mould models and assessment criteria. The study demonstrates that a probabilistic-based methodology enables a more systematic approach to evaluate wall constructions since it accounts for the involved …
Assessment Of Cumulative Damage Of Selected Building Envelopes Exposed To Various Environmental Effects, Václav Kočí, Jiří Maděra, Robert Černý
Assessment Of Cumulative Damage Of Selected Building Envelopes Exposed To Various Environmental Effects, Václav Kočí, Jiří Maděra, Robert Černý
International Building Physics Conference 2018
Hygrothermal performance of building envelopes based on three different building materials (solid brick, high performance concrete, aerated autoclaved concrete) is assessed under climatic conditions of Prague and Atlantic City. Main objective of the paper is to evaluate the influence of cumulative damage, which was induced by means of natural weathering in 2012- 2015 period, on the long-term performance. The performance is assessed using various measures, namely time-of-wetness function, number of freeze/thaw cycles, and annual amount of energy transmitted through the envelope. The results show that thermal performance of the envelopes gets mostly better after weathering as the annual amount of …
Impact Of The Substrate Thermal Inertia On The Thermal Behaviour Of An Extensive Vegetative Roof In A Semiarid Climate, Sergio Vera, Gilles Flamant, Germán Molina, Camilo Pinto, Paulo Tabares-Velasco, Nicholas Kincaid, Waldo Bustamante
Impact Of The Substrate Thermal Inertia On The Thermal Behaviour Of An Extensive Vegetative Roof In A Semiarid Climate, Sergio Vera, Gilles Flamant, Germán Molina, Camilo Pinto, Paulo Tabares-Velasco, Nicholas Kincaid, Waldo Bustamante
International Building Physics Conference 2018
The aim of this paper is to evaluate the impact of thermal inertia of the substrate of a vegetative roof on its thermal behaviour. Thermal inertia of the substrate was incorporated in two existing thermal models of vegetative (green) roof systems, the Sailor (2008) and Tabares and Srebric (2012) models. The predicted temperatures across the substrate, with and without inertia, were compared with experimental data obtained on a real vegetated roof located in a semiarid climate. The study shows the absolute need to consider the thermal inertia of the substrate to accurately predict the temperatures within the substrate and thus …
New Algorithm For Water Leakages Flow Through Rain Screen Deficiencies, Lars Olsson, Carl-Eric Hagentoft
New Algorithm For Water Leakages Flow Through Rain Screen Deficiencies, Lars Olsson, Carl-Eric Hagentoft
International Building Physics Conference 2018
There is a need of more knowledge about the mechanisms of water leakage through façades exposed to driving rain to make reliable risk analyses. Therefore, we have studied it in more detail and the outcome include inter alia a new algorithm. The algorithm is developed for calculation of water leakages through rain screen deficiencies. The algorithm is based on empirical values from many measurements according to standardized test method and validation. Even though the leakage process is very complicated, simple correlations have been shown. The leakages flow rate through deficiencies are mainly limited by the runoff rate and the catch …
Pv-Pcm System Integrated Into A Double Skin Façade. A Genetic Optimization Based Study For The Pcm Type Selection, Hagar Elarga, Andrea Dal Monte, Francesco Goia, Ernesto Benini
Pv-Pcm System Integrated Into A Double Skin Façade. A Genetic Optimization Based Study For The Pcm Type Selection, Hagar Elarga, Andrea Dal Monte, Francesco Goia, Ernesto Benini
International Building Physics Conference 2018
This paper reports the results of a genetic optimisation based numerical analysis of a PV-PCM system integrated into a double skin façade. The aim of the research activity was to develop and test the performance of a proposed simulation approach to identify the optimal configuration of the PCM layer, in terms of temperature transition range, and thickness, to assure the best energy performance of the façade system. Furthermore, because of the intimate relationship between the PCM’s features and the ventilated cavity to define the performance of the façade system, the domain of exploration included as variable the airflow rate and …
Stochastic Modelling Of Hygrothermal Performance Of Highly Insulated Wood Framed Walls, Lin Wang, Hua Ge
Stochastic Modelling Of Hygrothermal Performance Of Highly Insulated Wood Framed Walls, Lin Wang, Hua Ge
International Building Physics Conference 2018
Recent years, the majority of building codes in North America require an energy efficient envelope to improve the building energy efficiency. There are different design strategies to achieve a higher insulation level of the wood framed building envelope, such as increasing the depth of stud cavity to accommodate thicker insulation or adding an exterior insulation while keeping the depth of stud cavity unchanged. However, the highly insulated walls may lead to a higher risk of moisture problems. The deep cavity walls will reduce the temperature of the wood sheathing, which may increase the potential for condensation and mold growth. The …
Thermal Insulation Of Radon Systems To Avoid Freezing, Mehdi Ghobadi, Liang Zhou
Thermal Insulation Of Radon Systems To Avoid Freezing, Mehdi Ghobadi, Liang Zhou
International Building Physics Conference 2018
Radon (Rn) stacks, with or without an inline Rn fan, are designed to extract damp soil gas from under basement concrete slabs of homes. Along with Rn gas, moisture vapor also travels up through the Rn stacks. The amount of moisture in the vent pipes can, depending on the circumstances, be significant. In extremely cold weather, this moisture can condense, freeze, form ice and clog the vent pipe at the exit point. In this study, COMSOL Multiphysics was used to examine the amount of insulation required to avoid ice build-up in the Rn vent pipe located in unheated attic space …
A Picture Is Worth A Thousand Words: Smartphone Photograph-Based Surveys For Collecting Data On Office Occupant Adaptive Opportunities, William O'Brien, Anthony Fuller, Marcel Schweiker, Julia Day
A Picture Is Worth A Thousand Words: Smartphone Photograph-Based Surveys For Collecting Data On Office Occupant Adaptive Opportunities, William O'Brien, Anthony Fuller, Marcel Schweiker, Julia Day
International Building Physics Conference 2018
In the past several decades, psychological aspects have been become important to holistic building occupant comfort and satisfaction evaluations. Psychological dimensions of comfort include occupants’ opportunities to interact with their indoor environment and perceived control over the indoor environment. Current post-occupancy evaluations tend to focus on collecting quantitative data, despite overwhelming evidence that contextual factors can profoundly impact occupant comfort. This paper proposes and tests a novel method for data collection to study adaptive comfort opportunities. A smartphone-based survey was developed to concurrently collect office occupants’ subjective evaluations of usability and comfort of spaces, in addition to photographs of all …
Benchmarking The Energy Efficiency Of Office Buildings In Belo Horizonte, Brazil, Ana Carolina De Oliveira Veloso, Roberta Vieira Gonçalves De Souza
Benchmarking The Energy Efficiency Of Office Buildings In Belo Horizonte, Brazil, Ana Carolina De Oliveira Veloso, Roberta Vieira Gonçalves De Souza
International Building Physics Conference 2018
In countries in which energy efficiency regulations are already consolidated or in the process of being consolidated, an important parameter to be verified is the relative consumption of electric energy of existing buildings in accordance with established ranges of consumption for different types of buildings. In the present paper ISO 52003-1 methodology was applied to create a benchmarking for office buildings for the city of Belo Horizonte, Brazil and the work discusses the implications of using the standard’s methodology for the Brazilian scenario. To fulfill this objective, it was necessary to gather electric energy consumption data for this type of …
Exploring Occupants' Impact At Different Spatial Scales, Sara Gilani, William O'Brien, Burak H. Gunay
Exploring Occupants' Impact At Different Spatial Scales, Sara Gilani, William O'Brien, Burak H. Gunay
International Building Physics Conference 2018
Buildings' users have widely been accepted as a source of uncertainty in building energy performance predictions. However, it is not evident that the diversity of occupants' presence and behavior at the building level is as important as at the room level. The questions are: How should occupants be modeled at different spatial scales? At the various scales of interest, how much difference does it make if: (1) industry standard assumptions or a dynamic occupant modeling approach is used in a simulation-based analysis, and (2) probabilistic or deterministic models are used for the dynamic modeling of occupants? This paper explores the …
Neural Network Models Using Thermal Sensations And Occupants’ Behavior For Predicting Thermal Comfort, Zhipeng Deng, Qingyan Chen
Neural Network Models Using Thermal Sensations And Occupants’ Behavior For Predicting Thermal Comfort, Zhipeng Deng, Qingyan Chen
International Building Physics Conference 2018
It is important to create comfortable indoor environments for building occupants. This study developed neural network (NN) models for predicting thermal comfort in indoor environments by using thermal sensations and occupants’ behavior. The models were trained by data on air temperature, relative humidity, clothing insulation, metabolic rate, thermal sensations, and occupants’ behavior collected in ten offices. The models were able to predict similar acceptable air temperature ranges in offices, from 20.6℃ to 25℃ in winter and from 20.6℃ to 25.6℃ in summer. The comfort zone obtained by the NN model using thermal sensations in the ten offices was narrower than …
Quantification Of Building Energy Performance Uncertainty Associated With Building Occupants And Operators, Sara Gilani, William O'Brien
Quantification Of Building Energy Performance Uncertainty Associated With Building Occupants And Operators, Sara Gilani, William O'Brien
International Building Physics Conference 2018
Occupants play an important role in building energy performance, while building operators are the other side of the coin. This research quantifies the relative impact of probabilistic versus standard occupant models on building energy use. Energy performance of a highperformance reference small office building in Ottawa, Canada, is investigated using a simulation-based analysis. The impact of building users is studied by systematically altering occupant and operator-related domains, including occupants' presence and use of lights, window shades, operable windows, plug-in appliances, and thermostats. The results showed that the predicted natural gas energy use increased by a factor of about two compared …
Towards A New Way Of Capturing Occupant Well-Being, Mark Allen, Mauro Overend
Towards A New Way Of Capturing Occupant Well-Being, Mark Allen, Mauro Overend
International Building Physics Conference 2018
Occupant well-being is undergoing a surge of interest in both the research community and industry, as the potential benefits of increased levels of well-being become better quantified and understood. Well-being science itself is also constantly evolving, moving from the traditional negative view of depression and mental disorders as markers of well-being, towards the more positive notion of flourishing, which is feeling good and functioning well. This paper first sets out the key elements of well-being, as found in psychology literature. Surveys and interviews are the main methods used to capture the well-being of individuals and populations, yet completion rates can …
Experimental Analysis Of Micro-Cracks On The Change Of Moisture Transport Properties Of Aac, Jiří Maděra, Jan Kočí, Václav Kočí, Miloš Jerman, Magdaléna Doleželová
Experimental Analysis Of Micro-Cracks On The Change Of Moisture Transport Properties Of Aac, Jiří Maděra, Jan Kočí, Václav Kočí, Miloš Jerman, Magdaléna Doleželová
International Building Physics Conference 2018
In this paper, series of experiment measurements is carried out in order to study effect of freeze/thaw loading on the change of moisture transport properties of autoclaved aerated concrete. The samples were subjected to 15, 30 and 45 freeze/thaw cycles and subsequently basic physical properties, pore size distribution and water vapor and liquid water transport properties were investigated. The results showed significant changes in material properties of the material. The results of this research can be further implemented into computational models in order to bring the simulation results closer to the reality.
Aerogel-Enhanced Blankets: State-Of-The-Art, Market Readiness, And Future Challenges, Umberto Berardi, Syed (Mark) Zaidi, Bryan Kovisto
Aerogel-Enhanced Blankets: State-Of-The-Art, Market Readiness, And Future Challenges, Umberto Berardi, Syed (Mark) Zaidi, Bryan Kovisto
International Building Physics Conference 2018
Aerogel-enhanced products are often indicated as promising materials for increasing the thermal resistance of the building envelope. In particular, aerogel-enhanced blankets have already showed their effectiveness in several retrofitting projects. This paper aims to review the current state of the art regarding aerogel-enhanced blankets. In these materials, a fiber matrix bonds together the aerogel structure, compensating the low mechanical properties of the aerogels without reducing their exceptionally low thermal conductivity. This paper describes current aerogel-enhanced blankets existing worldwide and produced by different companies. Then, a new aerogel-enhanced blanket developed by the authors is presented. Thermal characterization tests confirm the superior …
Hygrothermal Analysis Of A Vapour-Open Assembly With Vacuum Insulation Panels, Brock Conley, Cynthia Ann Cruickshank, Mark Carver
Hygrothermal Analysis Of A Vapour-Open Assembly With Vacuum Insulation Panels, Brock Conley, Cynthia Ann Cruickshank, Mark Carver
International Building Physics Conference 2018
The following paper studies the year-long moisture conditions associated with vacuum insulation as the exterior insulation. The exterior insulation of one assembly was renovated by using 50.8 mm (2 inch) of expanded polystyrene (EPS) and represents the baseline performance of current common practice. Another assembly was built with 20 mm (0.7 inch) vacuum insulation panels encased in the equivalent thickness of EPS to represent a high RSI-value retrofit. The thermal performance was evaluated using a guarded hot box facility at Carleton University and the in-situ Building Envelope Test Hut at CanmetENERGY-Ottawa. The temperature, humidity and moisture content in the sheathing …