Peter Riederer

• Doctor of Engineering
• Scientific and Technical Center for Building

Reflective urban surfaces reduce the absorbed solar radiation and minimize the amplitude of surface temperatures of buildings and urban elements, acting as a passive cooling strategy of mitigating the intensity of urban overheating. However, their application on vertical surfaces increases the reflective component reaching the surrounding environme...

The building sector consumes more than one third of the total final energy in the world. In order to tackle this issue, new UBEMs (Urban Building Energy Modeller) are developed to simulate, analyse or optimise the energy consumption at building and district scale. Such tools are useful for decision makers and urban planners, for the design, retrofi...

The study focuses on the development and illustration of the interactions between urban microclimate and district scale building simulation through a micro co-simulation approach. A zonal microclimatic model developed to serve the needs of the district scale is coupled with an Urban Building Energy Model aiming a twofold objective: enhancement of t...

Increasing energy efficiency in the building sector is essential if we are to meet the objectives of sus- tainable development. The district scale offers significant potential for improving energy efficiency, par- ticularly at the early stages of the design. Thus, a transversal approach to the optimization of the energy concept of districts was ado...

The design of sustainable district is a recent subject which is motivated mainly by environmental, energy and economy aspects. The DIMOSIM (DIstrict MOdeller and SIMulator) platform allows to investigate this research field by modelling and simulating an entire district. A complete procedure, based on direct search and the NSGA-II genetic algorithm...

Les résultats présentés dans ce document concernent les terrains sur lesquels le projet Smart Electric Lyon s’est déployé, à savoir, des bâtiments existants. Ces bâtiments appartiennent au secteur Résidentiel et à celui du Tertiaire et des Collectivités locales. Les participants à l’expérimentation (les clients) sont dans une démarche d’amélioratio...

To aim a sustainable energy transition, modelling and simulation of district energy systems tend to become essential in developing effective urban policies. However, the multitude of criteria and constraints (financial, energetics, environmental ...) makes the analysis and the optimization of the complete urban system much complicated to obtain. Th...

The phenomena and thus also the simulation of district energy systems is very complex. The district is a multi-energy system with the vectors heat and electricity and in many cases the interaction of these both vectors. The components of the system are distributed with phenomena of consumption, production, distribution and storage, on a central or...

This study is based on the DIMOSIM (DIstrict MOdeller and SIMulator) simulation platform for modelling and simulation of urban energy systems. In order to allow feasibility or concept studies but also the study of detailed control strategies, several levels of detail in the modelling of all necessary components have been implemented into the tool....

This study is based on the DIMOSIM (DIstrict MOdeller and SIMulator) simulation platform for modelling and simulation of urban energy systems. In order to allow feasibility or concept studies but also the study of detailed control strategies, several levels of detail in the modelling of all necessary components have been implemented into the tool....

The phenomena and thus also the simulation of district energy systems is very complex. The district is a multi-energy system with the vectors heat and electricity and in many cases the interaction of these both vectors. The components of the system are distributed with phenomena of consumption, production, distribution and storage, on a central or...

The analysis and optimization of building energy systems at the district scale deals with interactions between multi-energy distributed components of consumption, production and storage, on a central or local level, that makes complex the evaluation of a global energy performance. In the case of large districts, the high number of concerned buildin...

Ground source heat pumps connected to a floor heating system can offer high efficiency for heating and cooling. However, the inertia of the floor heating creates a thermal lag that can lead to discomfort with conventional controllers. For this reason, a neural predictive controller for single-speed ground source heat pumps systems was developed. Th...

This paper is to introduce a dynamic simulation method and a total monitoring method and a new hybrid method combining the simulation and the monitoring to evaluate the building integrated geothermal heat pump (BIGHP) system seasonal performance factor (SPF). SPF is sometimes defined as CSPF(Cooling Seasonal Performance Factor) and HSPF(Heating Sea...

This paper presents the ICT components and tools that will be developed to optimize the design and perform realtime energy management of low carbon districts in the context of the EC-funded RESILIENT project. This ICT framework will provide all needed ICT support to the various stakeholders, including energy experts, business experts, pilot manager...

Ground coupled heat pump systems can offer high energy efficiency for heating and cooling of buildings.The coupling of the ground loop with system and building represents a complex system and system performances can vary over long periods, in the range of 10–15 years due to the charge or discharge of the ground loop. In order to correctly concept,...

In building simulation tools differential equations are widely used to model physical phenomena of components such as walls, air and any kind of system component in the building. Especially when simulation is used to study and optimise system control, the models used are mainly transient models solving differential equations in order to represent c...

The Kyoto protocol binded the developed countries to reduce the greenhouse gas emissions at least by 5% by 2008–2012 in order to tackle global warming and climate change. Some of the measures of the governments to achieve this goal are to promote new buildings construction and to retrofit existing buildings while satisfying low energy criteria. Thi...

A large variety of simulation environments exists for building and system simulation. Collaborative work is sometimes time-consuming since, in the different steps of building and system conception and optimization, different tools have to be used, each of them specifically dedicated to a particular problem: for example the overall conception of a b...

ABSTRACT

In France there is an increasing demand for energy efficient and environmentally friendly buildings of high thermal comfort. Balanced ventilation systems with heat recovery on the exhaust air and earth to air heat exchangers (EAHEX) are interesting techniques which can reduce the heating and cooling demand of buildings, and improve internal thermal...

Matlab/Simulink is known in a large number of fields as a powerful and modern simulation tool. In the field of building and HVAC simulation its use is also increasing. However, it is still believed to be a tool for small applications due to its graphical structure and not to fit well for the simulation of multizone buildings. This paper presents th...

The use of Matlab, a tool for mathematical programming, is actually increasing in a large number of fields. Together with its dynamic simulation toolbox Simulink, originally developed for control and automation applications, it has become a powerful tool that is suitable for a large number of applications. In the field of building and HVAC, the num...

CEN TC247 has prepared draft standards for main types of room controllers. These standards include a performance testing procedure that was designed to facilitate the introduction on the market of electronic controllers. The test procedure is based on the connection of the real controller to be tested to a virtual (simulated) building and technical...

Room models, currently used for controller tests, assume the room air to be perfectly mixed. Considering the results of a study of temperature conditions in real rooms, equipped with different HVAC systems, a new model is developed, assuming a non-uniform temperature distribution in a room. The proposed model is based on the zonal modelling approac...

Variable air volume (VAV) systems are commonly used for air conditioning in buildings. The testing of different control strategies and controllers for this application has been a main concern in several simulation studies. In these simulations much attention has been paid to the accuracy of the models of the VAV system while very simple models are...

CEN TC247 has prepared draft standards for main types of room controllers. These standards include a performance testing procedure that was designed to facilitate the introduction on the market of innovative controllers (adaptive controllers, fuzzy controllers …). The test procedure is based on the connection of the real controller to be tested to...

This paper presents modelling choices adapted to the study of the influence of the sensor position in building thermal control. The model is implemented in a toolbox of dynamic models of HVAC components. It must be suitable for the optimisation and the test of controllers and control strategies by simulation and emulation.Due to the convective coup...

This paper presents the development of a room model adapted to the study of the influence of the sensor position in building thermal control. The temperature measured by the sensor of a room temperature controller depends on its position in the zone. The more the room conditions are non-homogeneous, the more the temperature at the sensor position c...

Room models, currently used for controller tests, assume the room air to be perfectly mixed. A new room model is developed, assuming non-homogeneous room conditions and distinguishing between different sensor positions. From measurement in real test rooms and detailed CFD simulations, a list of convective phenomena is obtained that has to be consid...

Room models, currently used for controller tests, assume the room air to be perfectly mixed. A new room model is developed, assuming non-homogeneous room conditions and distinguishing between different sensor positions. From measurement in real test rooms and detailed CFD simulations, a list of convective phenomena is obtained that has to be consid...

CEN TC247 has prepared draft standards for main types of room controllers. These standards include a performance testing procedure that was designed to facilitate the introduction on the market of innovative controllers (adaptive controllers, fuzzy controllers...). The test procedure is based on the connection of the real controller to be tested to...

This paper demonstrates one step forward in the development of virtual laboratories that can be used for the development and test of HVAC control systems. While predefined parameters are used for standard tests, individual tests of controllers on different building construction and types or for different boundary conditions need, for each test, new...

Geothermal heat pumps represent an attractive solution for using renewable energy in buildings. These heat pumps can be used for heating and/or cooling and/or domestic hot water preparation, which represents a great advantage compared to other systems that are often limited to one particular function. The heat source/sink (for heating/cooling mode...

The necessity of innovation on the field of renewab le energy systems imposes on the industry to develop faster and faster new products or product assemblie s while managing perfectly the quality of the product s. In order to accelerate this process, a first versio n of a dynamic emulation test method has been developed. Since the test bench emulat...

The control industry integrates more and more recent innovations, especially on the sector of communication networks (bus), control (fuzzy logic, neural networks…) and informatic (hard-and software) for the development of Building Management Systems (BMS). The necessity of innovation on this field imposes on the control industry to develop faster a...

This paper presents the development of a zone model adapted to the study of the influence of the sensor position in building thermal control. The temperature measured by the sensor of a room temperature controller depends on its position in the zone. The measured sensor temperature depends of the convective coupling of the zone and its emitter and...

Résumé Une des solutions analysées dans le projet MESSIB et présentée dans cette étude est le stockage par chaleur sensible dans le sol (champ de sonde et pompe à chaleur réversible) pour des applications de chauffage et de refroidissement. Or, un des facteurs limitant d'un tel système est le transfert thermique entre le sol et les sondes. Un fluid...

Dresden, Techn. University, Diss., 2002 und Paris, Ecole des Mines, Diss., 2003. Computerdatei im Fernzugriff.