Design, construction, and testing of a gasifier-specific solid oxide fuel cell system

This paper describes the steps involved in the design, construction, and testing of a gasifier-specific solid oxide fuel cell (SOFC) system. The design choices are based on reported thermodynamic simulation results for the entire gasifier- gas cleanup-SOFC system. The constructed SOFC system is tested and the measured parameters are compared...

Addressing Different Approaches for Evaluating Low-Exergy Communities

The IEA Annex 64 focusing on low-ex communities aims at the improvement of energy conversion chains on a community scale, using exergy analysis as the primary evaluation mode. Within this Annex the participants discuss important aspects and available methods for energy and exergy assessment as well as the added value of aiming for low exergy ...

Actual Energy Savings of Renovated Dwellings: the Case of Amsterdam

The existing housing stock plays a major role in the realization of the energy efficiency targets. The non-profit housing sector in the Netherlands dominates the housing market as it represents 31% of the total housing stock. In the municipality of Amsterdam, where this share is even 46%, subsidies were given to housing associations between 2011...

Exergy and Sustainability: Insights into the Value of Exergy Analysis in Sustainability Assessment of Technological Systems

A major challenge in striving for a more sustainable society is the selection of technological systems. Given the capital intensity of industrial production plants, power generation systems and infrastructure, investment decisions create path dependencies for decades to come. It is difficult to know which technological system is preferable when...

Exergy in the built environment. The added value of exergy in the assessment and development of energy systems for the built environment.

This doctoral research studied the added value of exergy for the assessment and development of energy systems for the built environment, aiming at a reduced need for high-quality energy input. Currently the analysis and development of energy systems for the built environment is based on the energy concept. Energy however gives an incomplete...

Low Emission Conversion of Fossil Fuels with Simultaneous or Consecutive Storage of Carbon Dioxide

This thesis evaluates the possibility of using underground coal gasification with a low CO2 footprint. The thesis consists of two parts. In the first part, by using the concept of exergy, a framework was constructed through which the practicality (feasibility) of an energy conversion/extraction method can be systematically evaluated. This...

Gebiedsgerichte energetische systeemoptimalisatie: Een onderzoek naar de mogelijkheden voor een duurzame energietransitie

Over 40% of the energy demand is related to the built environment and is still largely reduced with interventions within or on buildings. Leo Gommans has been professionally active for years in the field of research, education and in the consultation of energy-conscious design for buildings. In the thesis ‘area-based energetic system...

The sustainability of LNG evaporation

Numerous LNG (Liquefied Natural Gas) import terminals are under construction to fulfil the growing demand for energy carriers. After storage in tanks, the LNG needs to be heated and evaporated, also called ‘regasified’, to the natural gas needed in households and industry. Several options exist for providing the required heat. In the interest of...

The relation between exergy and sustainability according to literature

A thorough investigation of literature about the relation between exergy and sustainability was conducted in September 2010. An overview of opinions and methods in the field of exergy analysis and sustainability is briefly presented. Exergy analysis has several advantages compared to energy analysis, but a careful underpinning of the relation...

Exergy Efficient Application of LNG Cold

The worldwide demand for Liquefied Natural Gas (LNG) is growing, which results in numerous LNG import terminals being under construction. In the interest of sustainable development, it is important to decide carefully upon which technology to apply for evaporating the LNG to natural gas. Three options for the evaporation of LNG have been...

Understanding the exergy of cold: theory and practical examples

Exergy analysis is used to evaluate the thermodynamic performance of processes, including energy conversion and supply systems. This often involves the calculation of the exergy of heat, at a temperature either above or below the environmental temperature (T0). The exergy of ‘cold’, i.e., heat at T < T0, is less used and therefore sometimes...

Exergy and Sustainability

A thorough qualitative investigation of the relation between exergy losses and environmental problems has been conducted. Environmental effects being taken into account include climate change, acidification, eutrophication, disposal and dissipation. It is concluded that almost all environmental effects can be taken into account by studying the...

Thermodynamic explorations into sustainable energy conversion: Learning from living systems

Exergy efficient building design

Exergy loss reduction by combining exothermic and endothermic reaction routes

Document(en) uit de collectie Chemische Procestechnologie