Publications by Claude-Alain Roulet

Impact of traditional and modern building materials on the thermal behavior and energy consumption of a courtyard house in the hot and dry climate

In this work, we studied the thermal behavior of mono or multilayer walls of various compositions consisting of traditional and modern building materials, in order to identify those that provide good comfort and better energy conservation in conditioning c ...

Ios Press2014

Major mite allergen Der f 1 concentration is reduced in buildings with improved energy performance

Claude-Alain Roulet

Background: Environmental conditions play a crucial role in mite growth, and optimal environmental control is key in the prevention of airway inflammation in chronic allergic rhinoconjunctivitis or asthma. ...

2010

Explosion of energy demand for air cooling in summer: perspectives and solutions (EEDACS)

Claude-Alain Roulet, Philippe Renaud, Darren Robinson, Frédéric Haldi

The Swiss Federal Office of Energy has published directives in order to limit the increase of electrical energy consumption to a maximum of 5% in 2010 in comparison with 2000. To reach this goal, clear measures have to be taken regarding the installation a ...

EPFL2009

Diagnosing Sick Building Syndrome

Claude-Alain Roulet

2007

Multicriteria assessment of natural ventilation potential

Mario Germano, Claude-Alain Roulet

A method is proposed to assess the natural ventilation potential by taking into account the most comprehensive set of factors involved in natural ventilation. These factors are either driving forces, such as wind pressure and stack effect, or constraints, ...

2006

A comparative study of VOCs in Singapore and European office buildings

Claude-Alain Roulet

This study compares the characteristics of volatile organic compounds (VOCs) and the associated factors affecting them within European (EU) and Singapore buildings. Generally, concentrations of target VOCs determined in the two types of buildings were with ...

2006

Perceived health and comfort in relation to energy use and building characteristics

Claude-Alain Roulet, Niklaus Johner

Within the European research project Health Optimisation Protocol for Energy-efficient Building (HOPE), 96 apartment buildings and 64 office buildings (of which approximately 75% have been designed to be energy-efficient) were investigated. The building ch ...

2006

Relations between perceived indoor environment characteristics and well being of occupants at individual level

Claude-Alain Roulet

Within the European research project HOPE, 97 apartmentbuildings and 67 office buildings were investigated using checklists addressing the building characteristics and self-administered questionnaires to the occupants asking their perceived comfort (therma ...

2006

Multicriteria analysis of health, comfort and energy efficiency in buildings

Flourentzos Flourentzou, Claude-Alain Roulet

In order to comply with sustainable development policy, the minimum that buildings should achieve are a healthy, comfortable and energy-efficient environment. Criteria for individually assessing each of the many criteria are known: the occupant's perceived ...

2006

CEN Standards for Implementing the European Directive on Energy Performance of Buildings

Claude-Alain Roulet

The Energy Performance of Buildings Directive (EPBD) requires EU member states to establish a methodology for calculating the energy performance of buildings within a framework that includes the effect of active and passive solar systems as well as other c ...

2006

Indoor air purification and ventilation systems sanitation with essential oils

Claude-Alain Roulet

Ventilation systems often host bacteria and fungi that may be dangerous for the health of exposed people. Essential oils are one means among others to prevent microbial development. Used as a basis for many traditional therapies, these odorant plant extrac ...

2006

Comfort and well-being in solar buildings - Results from a European Audit

Claude-Alain Roulet

Within the European research project HOPE, 97 apartment buildings and 67 office buildings - a large part of which designed to be energy-efficient - were investigated using checklists regarding building characteristics and guestionnaires addressed to the oc ...

2006

Tracer Gas Measurement of Airflow Rates in Spaces with Several Air-Handling Units, Recirculation, or Large Time Constants

Claude-Alain Roulet

Methods to measure airflow rates using tracer gas in single air handling units are well known. In some buildings however, in particular in Singapore, rooms are often ventilated with two or more units and present large recirculation rates. Large recirculati ...

2006

Architectural education for sustainable design - A proposal for improving indoor environment quality

Claude-Alain Roulet

Buildings should be comfortable and healthy. They are a shelter for their occupants and should not be a source of problems. The architect widely influences the indoor environment quality by his design,. Ensuring a good indoor environment through appropriat ...

2006

Multicriteria analysis of health, comfort and energy-efficiency of buildings

Claude-Alain Roulet, Niklaus Johner

In order to cope with sustainable development policy, buildings should be at least healthy, comfortable and energy efficient. Criteria for assessing individually the occupant's perceived health, the provided thermal, visual, acoustical comfort, the indoor ...

2005

Correlations between SBS, perceived comfort, energy use and other building characteristics in european office and residential buildings

Claude-Alain Roulet, Niklaus Johner

Within the European research project HOPE, 67 office buildings and 97 residential ones were investigated using checklists addressing the building characteristics and questionnaires to the occupants asking their perceived comfort (thermal visual, acoustical ...

2005

Assessment of health risks in buildings using health hazard algorithms

Claude-Alain Roulet, Lee Ann Nicol, Carlo Peruzzo

The EU project HOPE (Health Optimisation Protocol for Energy-efficient buildings) seeks to characterise those buildings that achieve good performance in both energy efficiency and occupant health and comfort. This project involved two stages of fieldwork: ...

2005

Sick Building Syndrome and Building Characteristics

Claude-Alain Roulet, Niklaus Johner

Within the European research project HOPE, 64 office buildings were audited regarding in-door environment quality and building characteristics. Of those buildings, two groups are se-lected: 21 buildings with low prevalence of the sick building syndrome, an ...

2005

Natural Ventilation Potential of Urban Buildings

Mario Germano, Claude-Alain Roulet

2005

Creating healthy and energy-efficient buildings: lessons learned from the Hope project

Claude-Alain Roulet

Within the European research project HOPE, 97 apartment buildings and 67 office buildings - of which approximately 75% have been designed to be energy-efficient, and half of them are indeed - were investigated using checklists addressing the building chara ...

2005