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1,383 full-text articles. Page 7 of 54.

Generating Design-Sensitive Occupant-Related Schedules For Building Performance Simulations, Mohamed Ouf, William O'Brien, Burak Gunay 2018 Carleton University

Generating Design-Sensitive Occupant-Related Schedules For Building Performance Simulations, Mohamed Ouf, William O'Brien, Burak Gunay

International Building Physics Conference

Despite the benefits of occupant behavior (OB) models in simulating the effect of design factors on OB, there are challenges associated with their use in the building simulation industry due to extensive time and computational requirements. To this end, we present a novel method to incorporate these models in building performance simulations (BPS) as design-sensitive schedules. Over 2,900 design alternatives of an office were generated by varying orientation, window to wall ratio (WWR), the optical characteristics of windows and blinds, as well as indoor surfaces’ reflectance. By using daylight simulations and stochastic OB modeling, unique light use schedules were ...


Considerations On The Thermal Modelling Of Insulated Metal Panel Systems, Ligia Moga, Ioan Moga 2018 Technical University of Cluj-Napoca

Considerations On The Thermal Modelling Of Insulated Metal Panel Systems, Ligia Moga, Ioan Moga

International Building Physics Conference

The very strict regulations imposed by the European directives regarding low energy consumptions of buildings imposes the availability of thermal and energy efficient solutions for the building envelope. One common solution is given by insulated metal penal systems, which are typically used for industrial buildings but lately also used for other types of buildings (e.g. residential buildings, hotels, hospitals). These types of solutions must be properly addressed from the thermal modelling and simulation point of view considering a different thermal behaviour due to its detail components. For insulated metal penal systems the typical calculations are done by considering only ...


A Holistic Decision Support Tool For Façade Design, Sinem Kultur, Nil Turkeri, Ulrich Knaack 2018 Bahcesehir University

A Holistic Decision Support Tool For Façade Design, Sinem Kultur, Nil Turkeri, Ulrich Knaack

International Building Physics Conference

The aim of this paper is to present a tool which will support decision-makers of façade design process while giving decisions on façade parameters to consider their interactions with functional performance issues. The tool is believed to contribute the holistic design of facades which is lacking in existing literature. The functional performance aspects included in the tool are structural, fire, water related, air permeability related, thermal, moisture related, daylighting, and acoustic performances. Façade parameters that are taken as the main decision subjects within the tool are orientation, transparency ratio, façade type, window type, glazing, framing, solar control, wall configuration, finishing ...


Impact Of An Energy Efficiency Regulation In Northern Canada, Asok Thirunavukarasu, Hua Ge, Andreas Athienitis 2018 Concordia University

Impact Of An Energy Efficiency Regulation In Northern Canada, Asok Thirunavukarasu, Hua Ge, Andreas Athienitis

International Building Physics Conference

Extreme cold climates and Canada’s sparsely populated Northern regions have limited human and infrastructural capacity making it difficult to build energy-efficient homes. Despite such differences, homes are built based on codes and standards developed for Canada’s South. In 2008, a by-law was passed in Yellowknife, Canada requiring a minimum EnerGuide Housing (EGH) rating of 80 for all new single-family and two-family residential buildings. The EnerGuide’s Energy Rating Service (ERS) program is an energy assessment program for residential housing formerly known as the EnerGuide Rating for Houses (EGH). Homes are rated between 0 to 100; lower numbers represent ...


Study On The Design Method Of Integration Of Roof And Photovoltaic Based On Aesthetics, Technology And Energy-Saving Characteristic, Hongxin Feng, Juanli Guo, Gang Liu, Jiehui Wang 2018 Tianjin University

Study On The Design Method Of Integration Of Roof And Photovoltaic Based On Aesthetics, Technology And Energy-Saving Characteristic, Hongxin Feng, Juanli Guo, Gang Liu, Jiehui Wang

International Building Physics Conference

The development and utilization of new energy has been concerned due to the traditional energy is increasingly scarce. In recent years, solar building has developed rapidly in the construction industry which is a major energy consuming component. As an organic part of the building, the combination of roof and solar energy has become the focus of attention because of its large size, less shielding and other characteristics. Based on the works of recent years’ Solar Decathlon, this paper analysed the design and implementation of the integration of solar building’s roof and photovoltaic. Meanwhile, taking an office building in Xinjiang ...


Evaluation Of Efficiency And Renewable Energy Measures Considering The Future Energy Mix, Fabian Ochs, Georgios Dermentzis 2018 University of Innsbruck

Evaluation Of Efficiency And Renewable Energy Measures Considering The Future Energy Mix, Fabian Ochs, Georgios Dermentzis

International Building Physics Conference

Sustainable and responsible use of resources is required in order to mitigate climate change. Micro-economic goals usually consider the capitalized investment costs and/or the purchased energy but disregard environmental impacts. However, on macro-economic scale, the aim must be the reduction of the (non-renewable) primary energy (PE) use and of CO2-emissions. There is need for an appropriate evaluation method for comparing and ranking different passive and active building technologies, e.g. according to their impact on the PE consumption. National conversion factors for PE/CO2 differ significantly between different countries and are subject to change. Seasonal variations are not considered ...


Optimization Of Government Subsidization Strategies For Building Stock Energy Refurbishment, Alessandro Prada, Francesca Cappelletti, Andrea Gasparella 2018 University of Trento

Optimization Of Government Subsidization Strategies For Building Stock Energy Refurbishment, Alessandro Prada, Francesca Cappelletti, Andrea Gasparella

International Building Physics Conference

The high initial investment required in existing building refurbishment can limit the initiative of the building owners and prevent the full exploitation of a huge energy saving potential. Public incentives can play an essential role in fostering the energy retrofitting of the existing buildings and in increasing the renovation rate of the building stock, effectively reducing the energy final uses, the dependence on the fossil fuels, and helping meet the national efficiency targets. Public subsidization are intended to enhance the economic performance in terms of global cost of the energy efficiency measures for the owner, in order to induce positive ...


The Effect Of The Position And Temperature Difference Of Local Radiant Asymmetry On Thermal Comfort: An Experimental Investigation, Stijn Van Craenendonck, Leen Lauriks, Cedric Vuye, Jarl Kampen 2018 University of Antwerp

The Effect Of The Position And Temperature Difference Of Local Radiant Asymmetry On Thermal Comfort: An Experimental Investigation, Stijn Van Craenendonck, Leen Lauriks, Cedric Vuye, Jarl Kampen

International Building Physics Conference

In cold and moderate climates, poorly designed construction joints can lead to local low surface temperatures, which entails local radiant asymmetry. An experiment was set up to test the hypothesis that overall and local thermal sensation is influenced by temperature difference, and position and distance of local radiant asymmetry. In the experiment, 18 subjects participated where they were introduced in a room at 21°C and 45% relative humidity. The subjects were exposed to local radiant asymmetry created by a cooling plate. This plate was positioned at three different heights, and controlled for temperatures at 3, 6 or 10°C ...


Development Of A Procedure For Estimating The Parameters Of Mechanistic Emission Source Models From Chamber Testing Data, Zhenlei Liu, Andreas Nicolai, Marc Abadie, Menghao Qin, Jensen Zhang 2018 Syracuse University

Development Of A Procedure For Estimating The Parameters Of Mechanistic Emission Source Models From Chamber Testing Data, Zhenlei Liu, Andreas Nicolai, Marc Abadie, Menghao Qin, Jensen Zhang

International Building Physics Conference

In order to evaluate the impacts of volatile organic compounds (VOCs) emissions from building materials on the indoor pollution load and indoor air quality beyond the standard chamber test conditions and test period, mechanistic emission source models have been developed in the past. However, very limited data are available for the required model parameters including the initial concentration (Cm0), in-material diffusion coefficient (Dm), partition coefficient (Kma), and convective mass transfer coefficient (km). In this study, a procedure is developed for estimating the model parameters by using VOC emission data from standard small chamber tests. Multivariate regression analysis on the experimental ...


The Application Of Computed Tomography For Characterising The Pore Structure Of Building Materials, Steven Claes, Wouter Van De Walle, Muhammad Islahuddin, Hans Janssen 2018 KU Leuven

The Application Of Computed Tomography For Characterising The Pore Structure Of Building Materials, Steven Claes, Wouter Van De Walle, Muhammad Islahuddin, Hans Janssen

International Building Physics Conference

Flow and transport phenomena in porous media play a significant role in various fields of science and technology, comprising a spectrum from medical sciences over material sciences to soil and rock sciences. Also in building materials, the transfer of moisture and heat play a crucial role when assessing their properties and performances. Hence, three-dimensional analyses of the pore structure of building materials are becoming progressively more important in recent years, to obtain more accurate interpretations and simulations of their characteristics. Computed tomography has proven to be an excellent and versatile tool to perform these analyses non-destructively. The reconstruction of the ...


Condensation-Free Radiant Cooling Using Infrared-Transparent Enclosures Of Chilled Panels, Eric Teitelbaum, Adam Rysanek, Jovan Pantelic, Dorit Aviv, Simon Obelz, Alexander Buff, Yongqiang Luo, Forrest Meggers 2018 Princeton University

Condensation-Free Radiant Cooling Using Infrared-Transparent Enclosures Of Chilled Panels, Eric Teitelbaum, Adam Rysanek, Jovan Pantelic, Dorit Aviv, Simon Obelz, Alexander Buff, Yongqiang Luo, Forrest Meggers

International Building Physics Conference

Radiant cooling power in the humid climates is inherently limited by condensation. This research investigates a type of radiant cooling methodology whereby the cold temperature source is convectively and conductively isolated from the environment with a membrane transparent to visible radiation to allow supply temperatures to be decreased for radiant cooling systems in humid climates. We conduct an FTIR analysis on three candidate membrane materials and fabricate a prototype experimental test panel that allows for thermal performance evaluation at different panel orientation and depths. Our study shows that for a 5 °C chilled panel temperature, the exterior membrane surface temperature ...


Thermal Effect Of Metal Fin Inside Elevated Radiant Floor Based On The Thermal Utilization Of A Burning Cave, Xueyan Zhang, Bin Chen, Jiayi Zhao 2018 Dalian University of Technology

Thermal Effect Of Metal Fin Inside Elevated Radiant Floor Based On The Thermal Utilization Of A Burning Cave, Xueyan Zhang, Bin Chen, Jiayi Zhao

International Building Physics Conference

A rural house integrated with an elevated floor heating system based on the thermal utilization of a burning cave has been established to provide a more comfortable and clear indoor environment. Inside the elevated floor heating system, air is taken as the heat transfer medium and tin layer is designed as metal fin in the middle layer of the elevated floor to enhance heat transfer. In this study, heat transfer process and thermal performance of the inner metal fin were analyzed by theoretical calculations and field measurements. The results show that while the heat flux of the burning cave is ...


Numerical Thermal Model Of A Double-Glazed Window Filled With Phase Change Materials, Daniel Uribe, Nicolás Benavente, Waldo Bustamante, Sergio Vera 2018 Pontificia Universidad Católica de Chile

Numerical Thermal Model Of A Double-Glazed Window Filled With Phase Change Materials, Daniel Uribe, Nicolás Benavente, Waldo Bustamante, Sergio Vera

International Building Physics Conference

Phase change materials (PCMs) glazing systems might be able to improve the building energy performance because of controlling solar heat gains and peak heating and cooling loads. EnergyPlus, a state-of-the-art energy simulation tool, allows simulating the heat transfer through opaque elements that incorporate PCMs. However, EnergyPlus does not allow this for transparent elements with PCMs. As consequence, the main objective of this research is to develop a numerical thermal model of double glazing windows with PCM in the cavity to be coupled with EnergyPlus in the future. To develop the numerical heat transfer model, the sensible and latent heat of ...


Conceptual Framework For Improved Management Of Risks And Uncertainties Associated With The Performance Of The Building Enclosure, Ivar Björnsson, Miklós Molnár 2018 Lund University

Conceptual Framework For Improved Management Of Risks And Uncertainties Associated With The Performance Of The Building Enclosure, Ivar Björnsson, Miklós Molnár

International Building Physics Conference

The building enclosure has a substantial impact on the overall performance of a building, especially in relation to moisture safety, energy use, environmental footprint and economy. Although the introduction of novel building technology can increase the risk of failures in terms of reduced building performance, failures can also result from the recurrence of past mistakes while using well established building technologies. This indicates that the dissemination of existing knowledge, often documented in project reports, handbooks or experience databases, is not always carried out in an efficient way. One way of addressing the issue is by increasing awareness concerning potential risks ...


A Transparent Insulation Solar Façade Coupled With A Selective Absorber: An Experimentally Validated Building Energy Simulation Model, Miroslav Čekon, Jakub Čurpek 2018 Brno University of Technology

A Transparent Insulation Solar Façade Coupled With A Selective Absorber: An Experimentally Validated Building Energy Simulation Model, Miroslav Čekon, Jakub Čurpek

International Building Physics Conference

The development of various advanced materials and their subsequent integration into innovative building envelope concepts has the potential to achieve energy savings. Additionally, their usability in practical applications can be enhanced via the use of building energy simulation (BES) methods. Experimental procedures in conjunction with numerical computations could enable the prediction of the future performance of solar thermal façade concepts. The presented study is focused on the thermal response of a transparent insulation material (TIM) incorporated in a façade structure. An experimental prototype of a solar façade element with both a selective and a nonselective absorber was developed for use ...


Solar And Lighting Transmission In Complex Fenestration Systems With Perforated Solar Protection Systems, Waldo Bustamante, Daniel Uribe, Sergio Vera 2018 Pontificia Universidad Católica de Chile

Solar And Lighting Transmission In Complex Fenestration Systems With Perforated Solar Protection Systems, Waldo Bustamante, Daniel Uribe, Sergio Vera

International Building Physics Conference

Santiago de Chile is a city with a semi-arid climate, with prolonged periods of high temperature and solar radiation. In recent years, in this city, office buildings have been built with high window to wall ratio (WWR) facades. 65% of the office buildings built in the period 2005-2014 have a WWR higher than 60%. Only 5% of these buildings showed an efficient glazed façade solar protection device. One of these systems corresponds to an exterior textile solar protection. This type of systems, together with the perforated screens, could be effective solutions for the solar protection of glazed facades, reducing the ...


Liquid Desiccant-Polymeric Membrane Dehumidification System For Improved Cooling Efficiency In Built Environments, Michael Bozlar, Eric Teitelbaum, Forrest Meggers 2018 Princeton University

Liquid Desiccant-Polymeric Membrane Dehumidification System For Improved Cooling Efficiency In Built Environments, Michael Bozlar, Eric Teitelbaum, Forrest Meggers

International Building Physics Conference

We have recently demonstrated a new type of moisture absorber using a silicone-based liquid desiccant and a nonporous hydrophilic membrane. The setup consists of a core-shell structure where the desiccant flows inside the hydrophilic membrane (core) surrounded with humid air and confined inside a larger diameter tube (shell). In this work, we propose to extend the capabilities of this moisture absorber prototype by addressing two additional characteristics in order to fully validate its capabilities in the built environment. In the first section of this study, we developed a new setup to demonstrate the regeneration process of the liquid desiccant. The ...


Simulation-Based Approach To Optimize Courtyard Form Concerning Climatic Comfort In Hot And Humid Climate, Mehmet Bekar, Gülten Manioğlu 2018 Istanbul Technical University

Simulation-Based Approach To Optimize Courtyard Form Concerning Climatic Comfort In Hot And Humid Climate, Mehmet Bekar, Gülten Manioğlu

International Building Physics Conference

In hot and humid regions, in order to provide indoor thermal comfort conditions, most important design strategies are to maximize shady areas and natural ventilation. Courtyard building form was developed mainly in response to climatic requirements especially in hot climates. A courtyard is an unroofed area that is completely or partially enclosed by walls or building spaces. The function of the courtyard is to improve comfort conditions by modifying the microclimate around the building. The proportion of the courtyard affects considerably the shadows produced on the building envelope, and consequently the received solar radiation and the comfort conditions in the ...


An Experimental And Modelling Study On The Adsorption Characteristics Of Activated Carbon Under Different Challenge Concentration Levels, Chuan He, Jingjing Pei, Jensen Zhang 2018 Syracuse University

An Experimental And Modelling Study On The Adsorption Characteristics Of Activated Carbon Under Different Challenge Concentration Levels, Chuan He, Jingjing Pei, Jensen Zhang

International Building Physics Conference

Applying air cleaning devices is an effective approach to control targeted indoor gaseous pollutants. It is important to understand the adsorption characteristics of filter media (e.g, activated carbon) at typical indoor application conditions as well as standard test conditions. Tests per ASHRAE Standard 145.1 for filter media performance evaluation can provide a relative comparison among different media. However, as the tests are conducted at elevated gas concentrations (1~100 ppm), they do not represent the media performance under lower concentrations typical of indoor applications (


Evaluation Of The Physical Interpretability Of Calibrated Building Model Parameters, Sarah Juricic, Simon Rouchier, Aurélie Foucquier, Gilles Fraisse 2018 Univ. Grenoble Alpes, Univ. Savoie Mont-Blanc, CNRS, LOCIE

Evaluation Of The Physical Interpretability Of Calibrated Building Model Parameters, Sarah Juricic, Simon Rouchier, Aurélie Foucquier, Gilles Fraisse

International Building Physics Conference

Identifying building envelope thermal properties from the calibration of a lumped model raises identifiability issues. Not only needs the simplified model to be structurally identifiable, i.e. deliver unique estimates after calibration, but also the data used might not be informative enough to result in either or both accurate estimates and physically interpretable values. This could particularly be the case when data is extracted from non intrusive in situ measurements, in the sense not disturbing potential occupancy. In this frame, this paper develops a method to investigate the physical interpretation of the parameters of lumped models through a numerical tests ...


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