Publications de Frédéric Haldi

A bottom-up stochastic model to predict building occupants' time-dependent activities

Jean-Louis Scartezzini, Darren Robinson, Frédéric Haldi, Urs Wilke

A bottom-up modelling approach together with a set of calibration methodologies is presented to predict residential building occupants' time-dependent activities, for use in dynamic building simulations. The stochastic model to predict activity chains is c ...

Elsevier2013

Verification of stochastic models of window opening behaviour for residential buildings

Darren Robinson, Frédéric Haldi

Based on the analyses of data from two distinct measurement campaigns conducted in residential indoor environments in Japan and Switzerland, we identify the specificities of occupants' behaviour with respect to their interactions with windows, including th ...

Taylor & Francis2012

Multi agent simulation of occupants' presence and behaviour

Darren Robinson, Frédéric Haldi, Urs Wilke

2011

A personalized measure of thermal comfort for building controls

Nicolas Morel, Frédéric Haldi, David Daum

A personalized measure for thermal comfort has been applied for use in combination with smart controls for building automation. Using data from a field study, we first show the superiority of personalized measures for thermal comfort compared to standard n ...

Elsevier2011

Modelling occupants’ personal characteristics for thermal comfort prediction

Darren Robinson, Frédéric Haldi

Based on results from a field survey campaign conducted in Switzerand, we show that occupants’ variations in clothing choices, which are relatively unconstrained, are best described by the daily mean outdoor temperature and that major clothing adjustments ...

Springer-Verlag2011

THE IMPACT OF OCCUPANTS’ BEHAVIOUR ON URBAN ENERGY DEMAND

Darren Robinson, Frédéric Haldi

Using extensive field survey data acquired over the past seven years at the Solar Energy and Building Physics Laboratory at EPFL in Switzerland, models of occupants’ presence, opening and closing of windows and the raising and lowering of blinds have been ...

TU Vienna2010

Adaptive actions on shading devices in response to local visual stimuli

Darren Robinson, Frédéric Haldi

Based on 6 years of continuous measurements, we have analysed in detail the occupancy, thermal and visual parameters influencing actions on shading devices in order to derive an accurate model for the prediction of their usage in office buildings. This art ...

2010

Towards a Unified Model of Occupants' Behaviour and Comfort for Building Energy Simulation

Frédéric Haldi

The building sector alone accounts for around half of the energy consumed in Switzerland and most other developed countries, with associated adverse environmental consequences, and there is a great potential for savings in this sector. For this reason, the ...

EPFL2010

Results from the monitoring of indoor environment and occupant perceived productivity in office buildings

Darren Robinson, Frédéric Haldi

Based on almost 18 months of continuous direct measurements coupled with an electronic questionnaire, we have analysed the influence of indoor temperature and illuminance, outdoor climate parameters, thermal and visual sensation, clothing and season on the ...

2010

A PARTIAL DOUBLE BLIND EVALUATION OF A COMPREHENSIVE WINDOW OPENING MODEL

Darren Robinson, Frédéric Haldi

One of the key sources of uncertainty in building simulation relates to the presence and behaviour of occupants. Fortunately, several academic groups have been working to address this uncertainty, particularly in relation to the use of windows and the corr ...

2010

On the unification of thermal perception and adaptive actions

Darren Robinson, Frédéric Haldi

Occupants exercise adaptive actions in response to discomforting environmental stimuli in an attempt to restore their comfort. These responses to adaptive actions are either ignored (conventional PMV models) or handled in an aggregated way (adaptive therma ...

Elsevier2010

From the neighbourhood to the city : resource flow modelling for urban sustainability

Jérôme Henri Kämpf, Diane Perez, Darren Robinson, Adil Rasheed, Frédéric Haldi, Urs Wilke, Philippe Leroux

Agreed intergovernmental targets to reduce the emission of greenhouse gases due to predominantly urban anthropogenic activities are becoming increasingly stringent; one might even say ambitious. One crucial strategy in achieving these targets will be to im ...

EPFL2009

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

Interactions with window openings by office occupants

Darren Robinson, Frédéric Haldi

Based on almost seven years of continuous measurements, we have analysed in detail the influence of occupancy patterns, indoor temperature and outdoor climate parameters (temperature, wind speed and direction, relative humidity and rainfall) on window open ...

2009

On the behaviour and adaptation of office occupants

Darren Robinson, Frédéric Haldi

During the warm summer of 2006 a comprehensive longitudinal field survey of the adaptive actions of occupants, their thermal satisfaction and the coincident environmental conditions was conducted in eight Swiss office buildings. We have applied logistic re ...

2008

Towards comprehensive simulation and optimisation for more sustainable urban design

André Gabriel Kostro, Darren Robinson, Frédéric Haldi

In this paper we discuss progress that has been made in modelling of urban resource flows to support urban designers to optimise the sustainability of their design and planning proposals, In particular we consider models of urban energy demand and more gen ...

BRENET2008

Towards comprehensive simulation and optimisation for more sustainable urban design

André Gabriel Kostro, Jérôme Henri Kämpf, Darren Robinson, Frédéric Haldi

In this paper we discuss progress that has been made in modelling of urban resource flows to support urban designers to optimise the sustainability of their design and planning proposals. In particular we consider models of (i) resource availability, (ii)e ...

2008

An integrated adaptive model for overheating risk prediction

Darren Robinson, Frédéric Haldi

Based on the results from a field survey campaign, this article describes three new developments which have been integrated to provide a comprehensive basis for the evaluation of overheating risk in offices. Firstly, a set of logistic regression equations ...

2008

Model to predict overheating risk based on an electrical capacitor analogy

Darren Robinson, Frédéric Haldi

It is important for building designers to be able to judge if a space is likely to overheat, whether to determine if HVAC plant is required or to design this out by passive means. To this end several overheating risk criteria have recently been published. ...

2008

An adaptive model of overheating risk

Darren Robinson, Frédéric Haldi

Based on analogy between the charging and discharging of humans' tolerance to overheating stimuli and that of charge in an electrical capacitor, this paper proposes a simple mathematical model for predicting overheating risk given a set of measured / simul ...

BRENET2008