Smart Cities and challenges of sustainability

The paper proposes an idea of smart, secure and inclusive city that generates new directions for architecture and urban spaces, and especially better management, which encourages the use of alternative energy optimization and energy saving in “optical circular urban metabolism”, mobilizing resources and technological behaviors that can make sustainable, and therefore more competitive territory. Future city concept focuses on the optimization of the relationship between technological advancement and challenges of sustainability at the urban scale. A common element in all the cities of the future must be the environmental virtuosity and the participation of smart community. To address the social problems of urban and metropolitan (mobility, security and territorial monitoring, etc.) is not enough to imagine individual services compared to question varied of services, energy control, urban security; policy must be implemented for environmental performance (efficiency and environmental virtuosity) optimizing the participation of the urban community. The implementation of the new idea of the city will strengthen the effective participation of citizens in decision-making: promoting of digital pages and the use of tools that allow you to influence the drafting of policies through electronically dialogue systems. An approach to the city and urban society problems focuses on “prevention”; the answers given by the planning instruments to the new social needs do not end in the “spatialization” of welfare policies. Multiethnic city and security. To elaborate a scientific structure (of knowledge) focused on man, common in multi-ethnic cities in Europe, with the purpose to (evaluate different options) boost the communication and trans-cultural and inter-cultural interaction

The influence of additives on the crystallization of gypsum

Applied Science

The infrastructure playing field in 2030: Proceedings of the first annual symposium, Noordwijk, November 19, 1998

Reactor Institute DelftApplied Science

Ecosteden in China: Droom of werkelijkheid?

De beeldvorming rond stedelijke ontwikkeling en milieukwaliteit in China kent twee gezichten: een waarin de luchtkwaliteit in de grote steden onhoudbaar dreigt te worden. En een waarin massaal wordt geïnvesteerd in technologie voor duurzame energie en ecosteden. Maar wat zijn tot op heden de ervaringen met ecosteden in China eigenlijk? En hoe verhoudt de realiteit zich met de ideeën die ecostadtheoretici hebben ontwikkeld? Maken die Chinese ecosteden hun beloftes wel waar?Multi Actor SystemsTechnology, Policy and Managemen

Fabrieksvoorontwerp van het Hemi-Di-Hemihydraat fosforzuur proces

Document uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science

Adsorption of phosphonates on gypsum crystals

The absorption of phosphonate inhibitors at the crystal surface of gypsum has been determined from the decrease in phosphonate concentration of the bulk solution. The phosphonate was therefore oxidized to orthophosphate and spectrophotometrically determined as a molybdovanadophosphoric acid complex. The adsorption isotherms of AMDP at pH 5 and HEDP at pH values of 5 and 7 were measured at 25°C. From a comparison with the inhibitor effectiveness of both compounds during suspension growth experiments under similar conditions the surface coverage needed for growth inhibition was concluded to be 4–5%. The growth process appears to be blocked when all active growth sites provided by the steps upon the crystal surface, are occupied by adsorbed phosphonate ions. The phosphonate adsorption process to be irreversible and almost instantaneously completed. Differences in inhibitor performance of AMDP and HEDP at pH 5, or of HEDP at pH 5 and 7, can be explained from a different surface coverage of the gypsum crystals.Department of ChemistryApplied Science

Establishing industrial community energy systems: Simulating the role of institutional designs and societal attributes

The importance of decreasing industrial CO2 footprints has become evident, as also highlighted in COP26. As such, the transition to renewable energy in the industrial sector is essential to meet the targets. To this aim, establishing industrial community energy systems (InCES) where industries collectively invest in a shared energy system is an economically and environmentally attractive option. Yet, the emergence and continuity of such collective initiatives among industrial companies has neither received considerable attention in the scientific literature nor in practice. This research, as the first of its kind, aims to investigate institutional design options that allow for such collaboration to take place for the establishment and continuity of an InCES. Given the bottom-up and collaborative nature of such initiatives, we take an agent-based modeling and simulation approach, for the first time in this area, that incorporates the institutional and societal attributes that influence the formation and continuation of an InCES. We take data from an industrial cluster in Arak, one of the most prominent industrial cities in Iran. The results of this study confirm the economic feasibility of an InCES as compared to individual renewable energy investment in the cluster. The results also highlight the importance of flexible membership in increasing the number of investors (i.e., industrial companies) in such initiatives. Other important recommendations are: considering the installation of at least 15% extra capacity for the powerplant, restricting electricity consumption and enforcing on-time payment of monthly premium fees.Energie and IndustrieSystem Engineerin

Collaborative Renewable Energy Generation among Industries: The Role of Social Identity, Awareness and Institutional Design

Like many other sectors, climate change strategies have put various restrictions on industry, the most prominent one being caps on CO2 and other energy-related emissions. At the same time, and especially in many developing economies, the industry struggles with an increasing gap between the fast development of the sector and lagging energy supply capacity. Collective generation of renewable energy is seen as a promising means of transition, next to other forms of renewable energy generation (centralised, individual). The aim of this research is to investigate factors influencing willingness to participate in Industrial Community Energy Systems (InCES). Using existing literature on Industrial Symbiosis and Community Energy Systems, we formulate plausible hypotheses on the most relevant factors for the willingness of industries to join such initiatives. As one of the largest and most diversified industrial clusters in Iran, Arak industrial park is selected as the case study. Data were collected from the CEOs of 96 companies through survey research. Our results highlight the crucial role of awareness about the benefits of renewable power generation in an InCES. Social identity among industries and trust between them are also determining factors for their willingness to join InCES. Finally, proper institutional design for overcoming the partnership complexities (e.g., conflict resolution) was highlighted as a crucial factor for industries. It can be concluded from the results of this study that policymakers should avoid one-size-fits-all incentive design approaches and reach out to larger companies with targeted incentives, introduce specially designed bank loans for different target groups, and make use of consulting companies as intermediaries to increase the awareness of the industries regarding the benefits of investing in an InCES.Energy & IndustryTransport and Logistic

Can industries be parties in collective action? Community energy in an Iranian industrial zone

The industrial sector plays a huge role in creating economic growth. While energy is vital for industries to thrive, various factors are undermining the availability of energy including phasing out of fossil fuels, CO2 emission caps and, the large gap between the fast developments of industrial clusters and the energy supply, especially in developing countries. Recently, enabled by renewable energy technologies, a transition process is taking place towards decentralized settings for energy provision where households in neighbourhoods initiate renewable electricity cooperatives. The question addressed in this research is if or to what extent the model of collective action deployed by citizen cooperatives is applicable to collaborations between industries in an industrial cluster. We identified the conditions for the establishment of Industrial Community Energy Systems (InCES) from a collective action perspective by using Ostrom's Institutional Analysis and Development Framework. The case study selected is the industrial city of Arak, one of the largest and most diversified industrial clusters in Iran. Besides desk research, data was also collected by conducting semi-structured interviews and by holding stakeholder workshops. The results of this study highlight the importance of community spirit and trust for the establishment of InCES, unlike citizen cooperatives where finance and environmental attitude are essential. A transparent legal framework to resolve conflicts that might emerge in industrial partnerships is another crucial element given the many differences among industries such as differences in energy demand and in usage patterns.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Energy & IndustryTransport and LogisticsEconomics of Technology and Innovatio

Modelling the interaction between policies and international trade flows for liquid biofuels: an agent-based modelling approach

World biofuel production and trade have grown exponentially in the last decade. Nevertheless, the interaction between the markets for oilseeds (food/feed/bioenergy) and liquid vegetable oil-based biofuels is overwhelmingly complex and thus not well understood. In this study, we developed a spatially explicit agent-based model to provide insights into the effect of farmers' behaviour on trade flows and biodiesel production and to shed light on the influence of import tariffs for both palm oil and biodiesel on system behaviour. This new approach enables us to assess different types of rational economic behaviour for the adoption of crops by farmers. Results show that model outcomes can vary substantially based on the assumptions made concerning the behaviour of farmers. Moreover, we found that biodiesel trade and production are more sensitive to a change in the EU-28's biodiesel import tariff than to a change in the EU-28's palm oil import tariff. Overall, our results show that social processes, actors' heterogeneity, and institutions play an important role in the behaviour of the system.Energy & Industr