André De Herde

Catholic University of Louvain | UCLouvain · Faculty of Architecture, Architectural Engineering and Urban Planning

/ Citation : André De Herde, "Mot de bienvenue", lieuxdits#1, juin 2011, p.2. Bibliographie : /

Historically, natural ventilation has been an important factor to achieve thermal comfort and reduce energy consumption in healthcare buildings. Since the recent century, there has been an increasing change and scientific advancement that led to the reliance of mechanical ventilation systems in commercial buildings and especially in hospitals and h...

At present, a large number of studies expose the differences between the results thrown by the classic models of energetic simulation (theoretical) and the measured data. This is strongly related to how people use energy in their households, especially when there is no automatic control over heating and ventilation systems. This will imply that the...

Historically, natural ventilation has been an important factor to achieve thermal comfort and reduce energy consumption in healthcare buildings. Since the recent century, there has been an increasing change and scientific advancement that led to the reliance of mechanical ventilation systems in commercial buildings and especially in hospitals and h...

This paper presents the SOLEN integrated online tool, dedicated to citizens and local authorities. This methodology, developed to allow precise energy assessment (heating, cooling, ventilation, lighting, appliances, and cooking but also local production of renewable energy) of household energy uses, is firstly introduced. SOLEN uses a typological c...

The present work investigates the CO 2 dispersion in micro-scale urban area, and its effects on air quality in old buildings in the city of Ghardaïa (M'Zab valley). The city of interest is located in the south of Algeria. Ghardaïa is characterized by its vernacular urban structure well adapted to local climate (hot arid) which is listed by the Unit...

Recently, passive techniques have received a considerable attention in our modern buildings as a response to energy consumption, global warming and world ambition towards energy efficient buildings. Passive ventilation did not share a big ratio of interest due to several reasons such as the problem of natural ventilation fluctuations and the uncert...

Natural ventilation is an interesting topic of research. It could contribute in supplying adequate airflow rates, achieving thermal comfort in patients’ wards in hospitals and reduce energy consumption. Although, it’s still challenging due to the high fluctuations in ambient airflow and changeable weather conditions which should be studied carefull...

The Brussels Environment Agency designed a decision-support tool (QUADEAU) for the sustainable management of stormwater in urban and developed areas. The tool aims to evaluate and compare alternative scenarios for reducing water runoff in public spaces inside any neighbourhood. QUADEAU is an easy to use tool for urban designers and watershed practi...

The study of the hygrothermal parameters and performance of permeable materials is being expanded; however, there is a lack of guidelines or regulation regarding the level of liquid water migrations associated with existing materials. Even if some existing recommendations demand the installation of materials that are increasingly permeable to vapou...

This Study aims to examine natural ventilation efficiency and thermal performance in traditional Islamic hospitals. It assesses the effect of various design variables on indoor ventilation, thermal efficiency in patients’ wards in traditional Islamic hospitals taking into consideration seasonal weather conditions (summer-winter), and to which exten...

Informed decision-making is the basis for the design of Net Zero Energy Buildings (NZEBs). This paper investigates the use of building performance simulation tools as a method of informing the design decision of NZEBs. The aim of this study was to develop a design decision making tool, ZEBO, for zero energy residential buildings in hot climates and...

Building performance simulation (BPS) is the basis for informed decision-making of Net Zero Energy Buildings (NZEBs) design. This paper aims to investigate the use of building performance simulation tools as a method of informing the design decision of NZEBs. The aim of this study is to evaluate the effect of a simulation-based decision aid, ZEBO,...

The occupants’ behaviour has a great influence on the energy demand, management and consumption of a building. This paper investigates the influence of three parameters related to human behaviour through their modes of occupations (based on family size, management of the heating system and management of the heated area) on the housing heating loads...

The improvement and the development of shelters that are adapted to the specific conditions of a context where populations affected by disaster are in need is a growing concern in emergency response. To adress this challenge, IFRC-Shelter Research Unit, is studying and investigating new evaluation methods to better analyze the options available and...

In the last years, there has been growing concerns on the impact of the conditions of comfort, on the performance of the students in educational buildings. Research has provided evidence that when the quality of indoor environment increases, there are positive impacts on productivity and reducing of absenteeism, among others benefits for the studen...

Awareness of the role that buildings play in the current climate crisis is bringing to the fore new responsibilities for architectural educators and practitioners. Various pedagogical barriers still hinder the comprehensive implementation of mandates of environmental sustainability in design studio, at all levels of architectural education. Concurr...

There is a need for decision support tools that integrate energy simulation into early design of zero energy buildings in the architectural practice. Despite the proliferation of simulation programs in the last decade, there are no ready-to-use applications that cater specifically for the hot climates and their comfort conditions. Furthermore, the...

Los Estados miembros de la Unión Europea se han comprometido a reducir para el 2020 el consumo de energía primaria en un 20%. Dado que el consumo de energía en los edificios residenciales y comerciales representa aproximadamente un 40% del consumo total de energía final, se han definido una serie de políticas de Eficiencia Energética que mejoren el...

The Member States of the European Union have pledged to reduce by 20% the primary energy consumption to 2020. Since the energy consumption in residential and commercial buildings represents approximately 40% of total energy, it is possible to define a series of energy efficiency policies that allow improving the energy performance of dwellings as w...

Concerning net zero energy buildings, providing early design support for architects has never been more important. In this context, building performance simulation tools could be a strong supportive technique, when integrated early in the architectural design process. However, despite the available range of tools, most of them do not meet the archi...

EDUCATION FOR SUSTAINABLE ENVIRONMENTAL DESIGN. THE EDUCATE PROJECT https://ec.europa.eu/energy/intelligent/projects/en/projects/educate

In order to reduce the energy consumption of the building stock, a major trend is to drastically reduce the space-heating (SH) needs by improving the thermal performance of the envelope. In general, this measure is combined with efficient heating systems to minimize the delivered energy and greenhouse gas emissions. Nevertheless, these better syste...

La notion de NZEB, en tant qu’indicateur de performance, doit répondre à un triple objectif de rigueur scientifique, d'ambition proportionnelle à l'enjeu et de pragmatisme. Nous montrons que la définition actuelle des NZEB ne répond pas de façon optimale à ces 3 exigences. Dès lors, nous proposons une autre approche de la performance énergétique de...

This paper provides an overview of the use of building performance simulation (BPS) among the building design professionals in Egypt. To assess the situation and highlight the status and difficulties encounter in the usage and the needs for BPS tools, three workshops were held, in July and August 2010 in Cairo. The paper first presents a brief over...

Several bodies including the DOE, ASHRAE and the IEA SHC Task 40 are working on developing definitions for Net Zero Energy Buildings (NZEBs). Most existing definitions are based on setting a performance metric (quantity and quality) such as site energy, source energy, energy costs, or emissions, and a boundary for the energy source. However, the pr...

/ Citation : "Édito", lieuxdits#1, juin 2011, pp.3-4. Bibliographie : /

Office buildings in Santiago, Chile normally show higher cooling than heating energy demand. Overheating and high cooling energy demand are recurrent problems in this type of buildings in the city during summer and spring. This paper shows thermal performance of two representative office buildings constructed within the last 5 years in the city. On...

Office buildings in Santiago, Chile normally show higher cooling than heating energy demand. Overheating and high cooling energy demand are recurrent problems in this type of buildings in the city during summer and spring. This paper shows thermal performance of two representative office buildings constructed within the last 5 years in the city. On...

A survey of perception of thermal comfort and occupant behaviour was carried out in Santiago de Chile from December 2009 to January 2010. The survey was applied in an apartment building of the private real estate market. This paper proposes a methodology based on the systematic application of multivariate statistical techniques (principal component...

This article summarises a study undertaken to reveal potential challenges and opportunities for using building performance simulation (BPS) tools. The article reviews current trends in building simulation and outlines major criteria for BPS tool selection and evaluation based on analysing users' needs for tools capabilities and requirement specific...

Given the challenges to design Net Zero Energy Buildings (NZEBs), the use of Building Performance Simulation (BPS) tools during early design phases has been indispensable. In this context, we compare ten early design BPS tools. The aim is to define the potential of using and integrating the tools by architect during the design of NZEBs. The examine...

The urbanization in the Brussels-Capital Region in the last 50 years has doubled the impermeable area. This contributes regularly to flooding from the combined sewer network. One of the objectives of the storm water plan adopted in 2008 by the Government of the Region is to encourage the use of source control devices. Within this context, a user-fr...

The urbanization in the Brussels-Capital Region in the last 50 years has doubled the impermeable area. This contributes regularly to flooding from the combined sewer network. One of the objectives of the storm water plan adopted in 2008 by the Government of the Region is to encourage the use of source control devices. Within this context, a user-fr...

Lime—Hemp (LH) composites are innovative building materials. They can be used in renovated or thermally upgraded as well as new buildings. This article reviews hygrothermal properties of LH wall assemblies and compares their transient performance to five traditional assemblies using WUFI ® simulation. While the annual quantity of energy was similar...

There are extraordinary opportunities to reduce the consumption of fossil energy in retrofitting existing buildings in Egypt. For instance, South Tahrir (150km northwest of Cairo) falls in the arid climate zone with an annual-average daily global irradiation value of 23.76 MJ/m 2 and for diffuse irradiation they are 9.65 MJ/m 2 for Cairo and approx...

Over the last ten years, a high amount of (high-rise) double façades buildings, consisting of two façades with glass and aluminum separated by a large cavity, have been built. The usefulness of acoustic prediction models has become evident, especially at the tendering phase of a project. A double façade combines mostly a double glazing with a singl...

Despite all the available solar technologies and the opportunity to reduce energy demand, solar energy systems are in most cases not used in buildings today. The lack of technical knowledge among architects is one of the main barriers according to the IEA-Task 41 entitled Solar Energy and Architecture [1]. In fact, several problems face architects...

Almost a decade has passed since Chile begins to implement a Thermal Regulation for dwellings, which established a minimum requirement for each building component, according to different climatic zones. This article proposes a series of dynamic simulations, in order to assess the thermal comfort (during winter and summer) of apartments in Santiago...

n this paper, bioclimatic design strategies in vernacular Egyptian architecture have been analysed for three different climatic regions of Egypt. The climatic regions of Egypt are: hot dry, hot mild and hot humid regions. The design strategies were extracted from existing vernacular architecture in each region. All of the vernacular buildings in th...

Santiago, capital de la República de Chile, se sitúa en el valle central del país en los 33º 27’ de latitud sur y 70º 42’ de longitud oeste, presentando un clima templado cálido con una estación seca prolongada de 7 a 8 meses de duración. La temperatura media anual es de 12,2°C y la oscilación térmica es considerable: hay casi 13°C de diferencia en...

The malqaf or windcatcher is Egyptian vernacular archetypal device that traps the wind into the building. For centuries, the malqaf has been used as a viable solution to ensure natural ventilation. However, for the last 50 years, Egyptian practice has failed in combining traditional architectural devices into new techniques that could lead to susta...

A wide range of scientifically validated Building Performance Simulation tools BPS is available internationally. The users of those tools are mainly researchers, physicists and experts who value empirical validation, analytical verification and calibration of uncertainty as defined by e.g. BESTEST. However, literature and comparative surveys indica...

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Problématique L'architecture bioclimatique est l'architecture la plus ancienne : utilisation de matériaux locaux, volonté de se protéger des contraintes climatiques, recours à des systèmes ingénieux pour améliorer le confort, habitations troglodytes ou verna­ cu laires, etc. La standardisation actuelle tend à éloigner l'archi tecture de son environ...

A recent architectural current, mainly carried by a desire of building transparency proposed completely glazed facades, released from their function bearing and reduced to the role of envelope. In this case, the only manner of limiting to the maximum the losses in an entirely glazed building is either to build an entirely glazed additional skin, or...

In recent years, there has been a great deal of interest in double-skin facades due to the advantages claimed for this technology in terms of energy saving in the cold season, protection from external noise and wind loads and their high-tech image.The advent of computers and other office equipment has increased the internal heat gains in most offic...

In recent years, there has been a great deal of interest in double-skin facades due to the advantages claimed for this technology in terms of energy saving in the cold season, protection from external noise and wind loads and their high-tech image.The advent of computers and other office equipment has increased the internal heat gains in most offic...

Scale models are used frequently to evaluate the daylighting performance of buildings. In order to get accurate results, there are several rules to respect when building these scale models. Some of these rules are universal, while others depend on the measurement and observation devices, the type of sky under which the study is carried out, and the...

To develop low-energy architecture, designers need knowledge about passive cooling techniques and shading devices. This paper focuses on the impact of management strategies for external mobile shadings and cooling by natural ventilation. Various control rules are simulated for both techniques. Resulting energy demand and comfort conditions are disc...

In these last years, a great deal of interest has been devoted to double-skin facades due to the advantages claimed by this technology (in terms of energy saving in the cold season, high-tech image, protection from external noise and wind loads).One of the great characteristics of the double-skin facade is the greenhouse effect. We identify the fac...

The design of a new sky simulator and its construction are described in detail. The simulator, comprising 91 tungsten halogen lamps placed in a hexagonal array, is based on the modelling of one patch of the Tregenza sky hemisphere distribution. This concept allows illuminance measurements from one geometric configuration to be used for every sky mo...

Building envelopes are designed to regulate dynamic flows between interior and exterior environment. The paper presents a new type of sustainable building material made of rich lime and hemp chips and focuses on a particular mixture used to fill timber framed structures. Most of material's hygrothermal parameters were measured in the Fraunhofer-Ins...

Natural ventilation is of increasing interest in building industry because of recent focus on environmental concern, considered with both comfort and economical criteria. The aim of this study is to investigate how wind may induce natural ventilation, with focus on wind incidence and large scale environment density influences. These parameters modi...

1. Abstract A new type of sky and sun simulator has been developed in Belgium. This paper presents this new sky and sun simulator and the mirror box built as a complementary tool of this one. The simulator, made of 91 halogen lamps placed in a hexagonal shape, is based on the modelling of one patch of the Tregenza sky hemisphere distribution. Thank...

This study considers the link between tertiary buildings design and equipments known as natural and hybrid ventilation or cooling. It focuses on the case of cross ventilated buildings and the envelope choices able to ensurecomfort along with energy savings. This link is studied by simulating with TRNSYS various cross ventilation systems: by night,...

Parameters determining efficiency of natural ventilation systems are numerous. The most important are architecture and system design. This article get onto both but focuses on system design. Through dynamic simulations it shows that natural ventilation management has a large impact on energy saving but most of all on thermal comfort. Natural ventil...

In these last years, a great deal of interest has been devoted to double-skin façades due to the advantages claimed by this technology (in terms of energy saving in the cold season, high-tech image, protection from external noise and wind loads).The advent of computers and other office equipment increased the internal heat gains in most offices. Hi...

Concern about global warming has resulted in a resurgence of interest in naturally ventilated offices. Windows opening can, most of the time, be enough to cool the buildings. To compare various strategies, simulations with the software TAS were made to analyse zone air flows, temperature evolution and needs for cooling in an office. Simulations sho...

Double-skin facades are assuming an ever-greater importance in modern building practices. But there are still relatively few buildings in which they have actually been realized, and there is still too little experience of their behaviour in operation.To preserve comfort and reduce cooling loads, it is important to apply natural cooling strategies.T...

Double-skin facades are assuming an ever-greater importance in modern building practice. There is an increasing demand for higher quality office buildings. Occupants and developers of office buildings ask for a healthy and stimulating working environment.Double-skin facades are appropriate when buildings are subject to great external noise and wind...

There is an increasing demand for higher quality office buildings. Occupants and developers of office buildings ask for a healthy and stimulating working environment. Double-skin facades are appropriate when buildings are subject to great external noise and wind loads. A further area of application is in rehabilitation work, when existing facades c...

There is an increasing demand for higher quality office buildings. Occupants and developers of office buildings ask for a healthy and stimulating working environment. The advent of computers and other office equipment increased the internal heat gains in most offices. Highly glazed facades, often with poor shading, have become very common. This, to...

The project IDEA – Interactive Database for Energy-efficient Architecture – is a multinational collaborative project to build a European knowledge base on advanced energy conscious building design. At the core of this project are two earlier multimedia developments, the Swiss program DIAS and the German adaptation NESA which present the principles...

The objective of the work was to evaluate the impact of lighting energy savings on global energy consumption in office buildings. This evaluation comes from an integrated approach combining the daylighting and the thermal aspects. The study presented here is based on simulation results. Several façade configurations have been modeled, for the four...

The objective of the OPTI program (the dwellings module) is to help architects to take into account the impact of design choices on energy consumption designing a dwelling project.In order to do so, the program must:•be highly user-friendly (language based on drawings);•need a minimum of data and•be very fast.The computation of energy needs and ove...

The objective of the OPTI program (the office building module) is to help architects, engineers and design departments to take into account the impact of design choices on energy consumption designing a project.In order to do so, the program must:•be highly user-friendly (language based on drawings);•need a minimum of data;•be very fast.The computa...

The main purposes to be pursued in the climatic conception of commercial buildings are to reduce heat loads, to allow good exploitation of natural light and ventilation in order to be able to avoid or reduce the use of air-conditionning. The cooling and daylighting strategies are privileged, as they are natural ways of guaranteeing the conditions o...

There are extraordinary opportunities to reduce the consumption of fossil energy as a result of retrofitting the existing buildings in Egypt. For instance, Cairo falls in the arid climate zone with an annual total radiation above 2409 bankable kWh/m 2 per annum with approximately 3300 hours of full sunshine. However, the poorly insulated fabric of...

There have been several attempts to define zero impact or near zero impact buildings. Most of these are based on measuring performance or on metric benchmarks regarding the quantity or quality of the various resources employed during a building's life cycle. However, the problem underlying these efforts is that the resources are measured independen...