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Articles 1 - 30 of 707

Full-Text Articles in Physics

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

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 ...


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 Sep 2018

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 ...


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

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 ...


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 Sep 2018

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 ...


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

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 ...


Solar Efficiency Index Of Building Envelopes And Load Matching In Low Energy Buildings, Ellika Taveres-Cachat, Francesco Goia, Steinar Grynning Sep 2018

Solar Efficiency Index Of Building Envelopes And Load Matching In Low Energy Buildings, Ellika Taveres-Cachat, Francesco Goia, Steinar Grynning

International Building Physics Conference

Net-zero energy buildings oftentimes rely on solar-based building integrated technologies to offset energy use and achieve their goals. However, the value of a particular system is difficult to assess given that these technologies often bring about complex interactions with the indoor environment, and building energy management systems. The approach chosen in this study was to propose and test a simple index called the Solar Efficiency index (SE index), which makes it possible to characterize the performance of building envelopes with integrated solar systems. The index was used to investigate the effect of different configurations of a PV integrated shading device ...


Thermal Performance Of Pcm-Glazing Unit Under Moderate Climatic Conditions, Anna Wieprzkowicz, Dariusz Heim Sep 2018

Thermal Performance Of Pcm-Glazing Unit Under Moderate Climatic Conditions, Anna Wieprzkowicz, Dariusz Heim

International Building Physics Conference

Considering physical properties, transparent or translucent building components like windows or glazing facades are the weakest elements of building envelope. The heat transfer coefficient of such elements is approximately four times higher than for opaque partitions, which causes considerable increase of heat loss during winter. In summer relatively high solar transmittance is a source of heat gains which results in undesirable overheating. Application of phase change materials in glazing components affects its thermal performance by the increase of its heat capacity and decrease of solar heat gains, with regard to the current physical state of the PCM. The aim of ...


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

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 ...


Power Generation And Visual Comfort Performance Of Photovoltaic Toplighting Technologies In Transient Spaces, Nick Novelli, Brandon Andow, Scott Overall, Mohamed Aly, Christopher Morse, Berardo Matalucci Sep 2018

Power Generation And Visual Comfort Performance Of Photovoltaic Toplighting Technologies In Transient Spaces, Nick Novelli, Brandon Andow, Scott Overall, Mohamed Aly, Christopher Morse, Berardo Matalucci

International Building Physics Conference

Advances in long-span glazed structures and interest in high-performance building design has proliferated semi-conditioned spaces with large areas of overhead glazing. These spaces are often programmed with intermittent occupation where variability of the indoor climate is an intentional factor of the experience. Technological options for glazed canopy structures have likewise evolved, gaining functions such as power generation which diversifies the benefits of overhead glazing beyond weather protection and daylighting. Here we model the multiple benefits of current and emerging toplighting technologies deployed in the overhead glazing of a train station and compare power generation and visual comfort. A common building ...


Solar And Lighting Transmission In Complex Fenestration Systems With Perforated Solar Protection Systems, Waldo Bustamante, Daniel Uribe, Sergio Vera Sep 2018

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 ...


Experimental Study On The Impact Of Passive Chilled Beam In A Room With Displacement Ventilation, Zhu Shi, Vishal Anand, Qingyan Chen Sep 2018

Experimental Study On The Impact Of Passive Chilled Beam In A Room With Displacement Ventilation, Zhu Shi, Vishal Anand, Qingyan Chen

International Building Physics Conference

Previous studies have demonstrated that displacement ventilation (DV) can provide better air quality than mixing ventilation (MV), and may save energy in buildings. However, since DV introduces supply air to the occupied zone directly, the temperature of supply air it provides is normally higher than in a MV system, so the ability to remove cooling load is limited with the same amount of air. On the other hand, passive chilled beam (PCB) systems have been shown to be able to remove a large cooling load while saving energy. Therefore, this research studied a coupled configuration that combined DV and PCB ...


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 Sep 2018

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 ...


Dynamic Environment, Adaptive Comfort, And Cognitive Performance, Richard De Dear, Fan Zhang Sep 2018

Dynamic Environment, Adaptive Comfort, And Cognitive Performance, Richard De Dear, Fan Zhang

International Building Physics Conference

Since the invention of airconditioning over 100 years ago a central research challenge has been to define the indoor environmental temperatures best suited for occupants. The first scientific approach to this question was framed in terms of optimising occupant thermal comfort, commonly expressed as a U-function, symmetrical around a single optimum temperature for any given combination of the remaining comfort parameters (ISO, 2005). The inescapable conclusion drawn from such logic in the minds of risk-averse design engineers is that the only strategy able to reliably deliver occupant comfort is HVAC applied to sealed-façade architecture. A rigorous scientific rebuttal of the ...


Humans And Nature In The Loop: Integrating Occupants & Natural Conditioning Into Advanced Controls For High Performance Buildings, Vivian Loftness, Azizan Aziz, Volker Hartkopf, Khee Poh Lam, Bertrand Lasternas Sep 2018

Humans And Nature In The Loop: Integrating Occupants & Natural Conditioning Into Advanced Controls For High Performance Buildings, Vivian Loftness, Azizan Aziz, Volker Hartkopf, Khee Poh Lam, Bertrand Lasternas

International Building Physics Conference

Post Occupancy Evaluation plus Measurements (POE+M) has revealed that thermal, visual, acoustic and even air quality standards derived through controlled experimentation alone does not ensure comfort or health in buildings. Introducing human input into environmental standards and into user centric controls is critically needed for a sustainable future. For over a decade, CMU’s Center for Building Performance & Diagnostics has been gathering POE+M data from over 1500 workstations around the world and testing the benefits on innovative environmental control systems. The separation of ambient and task conditioning, the provision of task controls, the introduction of occupant voting and ...


Improving Durability Of Wooden Beam Bearings In Inside Insulated Walls By Tempering The Beam’S Heads, Paul Wegerer, Thomas Bednar Sep 2018

Improving Durability Of Wooden Beam Bearings In Inside Insulated Walls By Tempering The Beam’S Heads, Paul Wegerer, Thomas Bednar

International Building Physics Conference

Improving durability of wooden beam bearings after a thermal renovation via interior insulation is highly demanding for planners. Because of an isolated thermal bridge in the area of the wooden beam head the risk of condensation water forming in this area increases after installing interior insulation. The problem with wooden beam ends has been analysed increasingly in the last few years by many research institutions as wooden ceiling constructions are common in existing buildings. Furthermore, thermal renovation makes a vital contribution regarding improving the energy-efficiency of existing buildings. In this paper a method to temper wooden beam ends is introduced ...


Fate Of Particles Released By A Puff–Dispersion With Different Air Distributions, Shichao Liu, Atila Novoselac Sep 2018

Fate Of Particles Released By A Puff–Dispersion With Different Air Distributions, Shichao Liu, Atila Novoselac

International Building Physics Conference

Well-mixed assumption normally has flaws in the space with continuous-releasing particle sources. For transient point or puff sources, however, particle concentration might vary differently among locations during emission periods and afterwards. This study measures whether and how rapidly ventilation systems can distribute particles emitted from puff-like sources in an indoor space. The impact of ventilation pattern (over-head mixing ventilation and displacement ventilation), particle size (0.77, 2.5 and 7 μm) and source location are also examined. The results show that particles with sizes of 0.77 μm and 2.5 μm can be distributed uniformly by both mixing ventilation ...


Understanding Swelling Of Wood Through Multiscale Modeling, Dominique Derome, Chi Zhang, Mingyang Chen, Jan Carmeliet Sep 2018

Understanding Swelling Of Wood Through Multiscale Modeling, Dominique Derome, Chi Zhang, Mingyang Chen, Jan Carmeliet

International Building Physics Conference

Wood is a well-used building material where the capacity of wood to absorb water leads to swelling and reduced mechanical properties, and also to questions of durability. The origin of the hygroscopic behavior of wood lies at the nanoscale material that composes its cell walls. Using atomistic modeling, we study the hygromechanical behavior of the different polymeric components of wood, separately and in aggregate configurations. We report the coupled effects of water sorption on the hygric and mechanical properties of the S2 cell wall layer and we upscale the findings using a poromechanical framework.


Analysis Of Dynamic Variation Characteristics And Influential Factors Of Pm2.5 On Subway Platforms Under Air-Conditioning Condition And Ventilation Condition, Lihui Wang, Jihua Zhang, Tianwei Hu, Meng Kong, Jensen Zhang, Jie Song, Yi Zheng Sep 2018

Analysis Of Dynamic Variation Characteristics And Influential Factors Of Pm2.5 On Subway Platforms Under Air-Conditioning Condition And Ventilation Condition, Lihui Wang, Jihua Zhang, Tianwei Hu, Meng Kong, Jensen Zhang, Jie Song, Yi Zheng

International Building Physics Conference

The purpose of this study is to investigate the main influential factors of the subway Particulate Matter (PM) pollutants under the air-conditioning condition and ventilation condition, by an on-site field measurement in a subway station in Shanghai. It is found that the dust accumulation at fresh air shaft was the secondary dusting action under the influence of fresh air flow, leading to a higher concentration of the PM in the subway station than in the outdoor air even when the outdoor air quality was good. In addition, in the morning rush hour the PM 2.5 value near the platform ...


The Effects Of Production Technologies On The Air Permeability Properties Of Cross Laminated Timber, Villu Kukk, Targo Kalamees, Jaan Kers Sep 2018

The Effects Of Production Technologies On The Air Permeability Properties Of Cross Laminated Timber, Villu Kukk, Targo Kalamees, Jaan Kers

International Building Physics Conference

In building envelope, the cross laminated timber (CLT) is often used as air barrier layer. The objective of this study was to evaluate the impact of production technologies such as edge bonding, different initial moisture content (MC) of lamination, and number of lamination layers (3 and 5) on the air-permeability properties of cross laminated timber. Air leakage and crack growth in CLT panels were measured after the panels were conditioned in environments with different relative humidity (RH) in progressive steps from humid to dry environments (RH 70%→ RH 50%→ RH 30%→ RH 10%). The test results showed that the most ...


Radon Levels In Rented Accommodation, Torben Valdbjørn Rasmussen Sep 2018

Radon Levels In Rented Accommodation, Torben Valdbjørn Rasmussen

International Building Physics Conference

Indoor radon levels were measured in 221 homes located in 53 buildings, including 28 multioccupant houses and 25 single-family terraced houses. The homes consisted of rented accommodation located in buildings recorded as being constructed before 2010 and after the year 1850. In addition, the radon level was measured in the basement in 9 of the buildings. The mean year value of the indoor radon level was 30.7 (1–250) Bq/m3. The indoor radon level exceeded 100 Bq/m3 in 5.9% of the homes, all located in single-family terraced houses. The variable single-family terraced houses explained 5.9 ...


Sorption Hysteresis In Wood And Its Coupling To Swelling: A New Modelling Approach, Jan Carmeliet, Mingyang Chen, Dominique Derome Sep 2018

Sorption Hysteresis In Wood And Its Coupling To Swelling: A New Modelling Approach, Jan Carmeliet, Mingyang Chen, Dominique Derome

International Building Physics Conference

Sorption hysteresis of amorphous cellulose is studied. Cellulose, as a renewable organic biopolymer, is an essential component of various natural composites such as wood. A coupling process between sorption and deformation leads to the hysteresis as observed in sorption and swelling, both experimental and simulated for cellulose and wood in general.


Determination Of Lead Dust Fall Rates During Deconstruction Of Wood Frame Buildings In An Urban Region In The Northeastern United States, Paul Crovella, Marc Delaney, Melisa Kohan Sep 2018

Determination Of Lead Dust Fall Rates During Deconstruction Of Wood Frame Buildings In An Urban Region In The Northeastern United States, Paul Crovella, Marc Delaney, Melisa Kohan

International Building Physics Conference

Title: Lead dust fall deposition rates during deconstruction of wood frame buildings in an urban region in the Northeastern United States. Objectives: Determine the lead dust fall deposition rate due to hybrid deconstruction (separation and removal of building components) of wood-frame structures, and compare that to the lead dust fall deposition rate from demolition (compression and collapse of building components). Scope: A city block with a total of 11 wood-frame structures was selected as the location for the deconstruction leadfall testing. Testing was done during the deconstruction of 7 of the 11 pre-1950 homes (mean construction year 1928, mean floor ...


Hygrothermal Performance Of A Hygroscopic And Permeable Wall Assembly: Impact Of A Vented Wall Cavity, Diane Bastien, Martin Winther-Gaasvig Sep 2018

Hygrothermal Performance Of A Hygroscopic And Permeable Wall Assembly: Impact Of A Vented Wall Cavity, Diane Bastien, Martin Winther-Gaasvig

International Building Physics Conference

Building envelopes that are hygroscopic and permeable to water vapour can contribute to improve the Indoor Environmental Quality (IEQ) in buildings by reducing indoor humidity fluctuations and the concentration of some contaminants like CO2. However, risks of interstitial condensation and mold growth need to be assessed to ensure the durability of such building envelopes. The objective of this paper is to perform hygrothermal simulations of a case study house designed with a Hygroscopic and Permeable Building Envelope (HPBE) and to assess the impact of having a vented cavity compared to a face-sealed wall. This contribution presents hygrothermal simulations of a ...


Assessing The Performance Of Photocatalytic Oxidation Of Volatile Organic Compounds In Three Different Scaled Set-Ups, Zahra Shayegan, Chang-Seo Lee, Ali Bahloul, Fariborz Haghighat Sep 2018

Assessing The Performance Of Photocatalytic Oxidation Of Volatile Organic Compounds In Three Different Scaled Set-Ups, Zahra Shayegan, Chang-Seo Lee, Ali Bahloul, Fariborz Haghighat

International Building Physics Conference

Volatile organic compounds (VOCs) are considered a major group of indoor air contaminants with several proven adverse health effects. Ultraviolet photocatalytic oxidation process (UVPCO) is a promising technology for the removal of VOC contaminants in indoor air environments. In addition, adequate efficiency of PCO has been proven in laboratory conditions. However, when PCO is scaled up and applied in real conditions, there are some limitations that need to be addressed. Several factors are involved in the efficiency of the PCO process such as humidity, flow rate (residence time), inlet of contaminant concentration, light source, etc. To the best of our ...


The Impact Of Ventilation Strategy On Overheating Resilience And Energy Performance Of Schools Against Climate Change: The Evidence From Two Uk Secondary Schools, Esfand Burman, Dejan Mumovic Sep 2018

The Impact Of Ventilation Strategy On Overheating Resilience And Energy Performance Of Schools Against Climate Change: The Evidence From Two Uk Secondary Schools, Esfand Burman, Dejan Mumovic

International Building Physics Conference

The indoor environmental quality and energy performance of two modern secondary schools in the UK which have fundamentally different environmental strategies were investigated during building performance evaluations. The performances of these buildings against the projected weather data for future were also analysed. The results point to significant risk of future overheating as a result of climate change in the naturally ventilated building with passive measures that go well beyond the existing guidelines for schools. The other school with mechanical ventilation shows resilience to future overheating. However, shortcomings in building procurement and operation have severely compromised its energy performance. It is ...


Experimental Investigation Of Latent Heat Thermal Energy Storage For Highly Glazed Apartments In A Continental Climate, Shahrzad Soudian, Umberto Berardi Sep 2018

Experimental Investigation Of Latent Heat Thermal Energy Storage For Highly Glazed Apartments In A Continental Climate, Shahrzad Soudian, Umberto Berardi

International Building Physics Conference

The high solar heat gains in highly glazed buildings are a major thermal discomfort factor leading to higher energy consumption for space cooling. Higher window to wall ratios (WWR) also entail large temperature fluctuations due to heat loss and temperature extremes in buildings. Passive latent heat thermal energy storage (LHTES) is a potential solution to regulate the indoor thermal environment in buildings through mitigating the indoor surface temperatures. In this study, the effectiveness of phase change materials (PCMs) in the context of a highly glazed apartment unit with 80% WWR is investigated for internal wall and ceiling applications. To provide ...


Numerical Investigation Of A Diffuse Ventilation Ceiling System For Buildings With Natural And Hybrid Ventilation, Alessandro Nocente, Francesco Goia, Steinar Grynning Sep 2018

Numerical Investigation Of A Diffuse Ventilation Ceiling System For Buildings With Natural And Hybrid Ventilation, Alessandro Nocente, Francesco Goia, Steinar Grynning

International Building Physics Conference

The need to meet requirements, both in terms of ventilation and thermal comfort in modern buildings, has led to the development of different concepts for ventilation, among which the so-called Diffuse Ceiling Ventilation (DCV). This system makes use of the space between the ceiling slabs and the suspended ceiling as a plenum for fresh air, while the suspended ceiling itself becomes an air diffuser element. If compared to traditional solutions, this allows a higher amount of ventilation air to be injected in the room at lower speed, and a more even distribution of the fresh air within the room. Furthermore ...


Interior Insulation Retrofit Of A Brick Wall Using Super Insulation Materials: Design Of A Field Testing In An Industrial Brick Building, Pär Johansson, Paula Wahlgren Sep 2018

Interior Insulation Retrofit Of A Brick Wall Using Super Insulation Materials: Design Of A Field Testing In An Industrial Brick Building, Pär Johansson, Paula Wahlgren

International Building Physics Conference

The societal demands on a more energy efficient building stock in Sweden creates challenges to find suitable retrofitting measures. One of the measures currently discussed is to use interior insulation. This measure leads to a reduced temperature in the wall, which increases the risk for elevated moisture levels in the wall. When the thickness of the insulation layer is limited, super insulation materials (SIM) may be used. SIM can be divided into advanced porous materials, such as aerogel blankets (AB), and vacuum insulation panels (VIP). Often moisture from the outside is the major moisture source why a solution may be ...


Lighting Characterization Of A New Coating For Window Retrofit, Umberto Berardi Sep 2018

Lighting Characterization Of A New Coating For Window Retrofit, Umberto Berardi

International Building Physics Conference

The present paper describes a new high-performance coating used for the retrofit of existing glazing systems. The easy application of this new coating on the internal side of the glazing makes possible to reduce quickly the solar heat gain coefficient of an existing window. A full laboratory characterization both from the thermal and light transmissibility point of views is presented. Moreover, the paper reports the results of long-term studies aiming at assessing the risks of aging and related performance reductions for the investigate coating.


Study Of The Mechanical Behavior Of Traditional Japanese Mud Wall On Bamboo Lath, Midori Yamada, Naoyuki Koshiishi Sep 2018

Study Of The Mechanical Behavior Of Traditional Japanese Mud Wall On Bamboo Lath, Midori Yamada, Naoyuki Koshiishi

International Building Physics Conference

Mud wall on bamboo lath is a traditional Japanese method for constructing walls. Although the use of mud walls is environmentally friendly, it is necessary to evaluate the performances of the walls, especially their structural resistance, for broader and safe application. However, the performances of mud walls vary widely with various factors, including the locality, the natural materials used, the construction method adopted, and the quality of workmanship. In this study, the combinations of factors expected to improve the initial stiffness and toughness of mud walls were first determined based on previous studies. Subsequently, to reveal the influences of the ...