A5005620690- Integrated Energy Systems Optimization
- Building Energy and Comfort Optimization
- Geothermal Energy Systems and Applications
- Quality Function Deployment in Product Design
- Thermochemical Biomass Conversion Processes
- Renewable energy and sustainable power systems
- Radiative Heat Transfer Studies
- CO2 Sequestration and Geologic Interactions
- Heat Transfer and Optimization
- Advanced Control Systems Optimization
- Renewable Energy and Sustainability
- Biodiesel Production and Applications
- Refrigeration and Air Conditioning Technologies
- Smart Grid Energy Management
- Electric Vehicles and Infrastructure
- Sustainable Industrial Ecology
- Flow Measurement and Analysis
- Solar Thermal and Photovoltaic Systems
- Agriculture Sustainability and Environmental Impact
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Electric and Hybrid Vehicle Technologies
- Information Technology and Learning
- Maritime Transport Emissions and Efficiency
- Soil and Unsaturated Flow
- Biofuel production and bioconversion
University of Liège
2011-2023
Simulation and optimisation of district heating cooling networks requires efficient realistic models the individual network elements in order to correctly represent heat losses or gains, temperature propagation pressure drops. Due more recent thermal incorporating meshing decentralised cold sources, system often has deal with variable temperatures mass flow rates, reversal occurring frequently. This paper presents mathematical derivation software implementation Modelica a thermo-hydraulic...
District heating networks are a convenient, economic and environmental-friendly way to supply heat buildings connected central plant.However, the control of such system becomes challenging if total length network reaches several kilometers because travel time information into is over hours.One solution consists in instrumenting all parts performing closed loop optimize temperature mass flow rate supplied every single consumption point.However this generally expensive difficult implement...
District heating networks are considered as convenient systems to supply heat consumers while reducing CO 2 emissions and increasing renewable energies use. However, make them profitable possible, they have be developed, operated sized carefully. In order cope with these objectives, simulation tools required analyze several configuration schemes control methods. Indeed, the most common problems losses, electric pump consumption peak demand ensuring comfort of users. this contribution, a...
Biomass combined heat and power (CHP) plants connected to district heating networks are a very good opportunity increase the share of renewable sources into energy systems. Frequently, important consumers ensure stable base demand throughout year but they often have higher requirements in terms temperature (i.e. steam), which involves high level network during whole levels losses network. This contribution presents possibility decrease at operates use high-temperature pumps locally...
Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity increase the share of renewable sources into energy systems. However, CHP not optimized for electricity production, their operation is profitable only if sufficient heat demand available throughout year. On other hand, these often work baseline back-up boilers used supply peak demand. To extend use reduce costs, conventional fuel emissions, it proposed study...
In order to study the behaviour of shallow closed-loop geothermal systems four borehole heat exchangers equipped with fiber optics were installed on campus University Liege (Liege, Belgium) over a surface area 32m². This paper presents analysis continuous, high-resolution temperature profiles measured along boreholes length. The undisturbed ground measurements indicate loss from structures located close boreholes. A 3D numerical model is presented reproduce profiles. Temperature during...
In order to assess the performances of domestic heating boilers with a CE mark, wood pellets fired condensing boiler has been purchased and installed in Laboratory for tests. The objective study was not only check announced performances, but mainly investigate influence different parameters affecting functioning boiler, thermal efficiency pollutants (NOx CO) emission being aimed at. Tests have performed cycling frequency burner functioning, overall excess air, return water temperature,...
Solar thermal plants are often considered as a convenient and environmentally friendly way to supply heat buildings or low temperature industrial processes. Some modelling techniques required assess the dynamic behaviour of solar in order control them correctly. This aspect is reinforced while large considered. Indeed, some atmospheric conditions, such local clouds, could have significant influence on outlet field. A common approach transport pipes one-dimensional finite volume method....