Zoekresultaten

Process to extract and purify Δ9-tetrahydrocannabinol

Making sense of the data

Charging an electric vehicle needs to be as simple as possible for the user. He needs to park his car, plug his vehicle and identify to start charging. There is no need to understand the technology and protocols needed to reach this simple task.For the students and researchers of the Amsterdam University of Applied Science (AUAS / HvA), there is a need to understand as deep as possible all the techniques involved in this technology.The purpose of this document is to give to the reader the information he needs to understand how an electric car can be charged and how he can use these knowledges to analyses and interpret data.

Increasing hosting capacity of low-voltage distribution network using smart charging based on local and dynamic capacity limits

While the Municipality of Amsterdam wants to expand the electric vehicle public charging infrastructure to reach carbon-neutral objectives, the Distribution System Operator cannot allow new charging stations where low-voltage transformers are reaching their maximum capacity. To solve this situation, a smart charging project called Flexpower is being tested in some districts. Charging power is limited during peak times to avoid grid congestion and, therefore, enable the expansion of charging infrastructure while deferring grid investments. This work simulates the implementation of the Flexpower strategy with high penetration of electric vehicles, considering dynamic and local power limits, to assess the impact on both the satisfaction of electric vehicle users and the business model of the Charging Point Operator. A stochastic approach, based on Gaussian Mixture Models, has been used to model different profiles of electric vehicle users using data from the Amsterdam public electric vehicle charging infrastructure. Several key performance indicators have been defined to assess the impact of such charging limitations on the different stakeholders. The results show that, while Amsterdam’s existing public charging infrastructure can host just twice the current electric vehicle demand, the application of Flexpower will enable the growth in charging stations without requiring grid upgrades. Even with 7 times more charging sessions, Flexpower could provide a power peak reduction of 57% while supplying 98% of the total energy required by electric vehicle users.

Is Bio-P2G technologically attractive as contribution towards balancing the supply and demand of renewable energy?

The Bio-P2G-program (Bio-Power to Gas) at the Hanze University of AppliedSciences evaluates the technologic feasibility of the biological reduction of carbondioxide with hydrogen to methane (biomethanation: 1 CO2 + 4 H2 -> CH4 + 2 H2O)Chemically, this process is known as the Sabatier reaction, but within anaerobicdigestion the biological methanation is catalyzed by a specific group ofmicroorganisms: the hydrogenotrophic methanogens.

Listening into others

The essays collected here are based on two decades of engagement with the residents of the slums of Govindpuri in India’s capital, Delhi. The book presents stories of many kinds, from speculative treatises, via the recollection of a thousand everyday conversations, to an account of the making of a radio documentary.Zig-zagging through the lanes of Govindpuri, Listening into Others explores the vibrant sounds emanating from slum culture. Redefining ethnography as listening in passing, Chandola excels at narrating the stories of the everyday. The ubiquity of smartphones, sonic selfies, wailing, the ethics of wearing jeans, the crossroad rituals of elections, the political agency of slum-dwellers, the war of the sexes through bodily gestures, and conflicts over ownership of both property and sound generated in the slums — these are among the many encounters Chandola opens up to the reader.Slums are anxious spaces in the materiality, experience, and imagination of a city. They are the by-products of the violent and exploitative mechanisms of urbanization. What becomes of the slum-dwellers, who universally, across centuries, cities and continents, befall similar fates of being discriminated, reckoned to be the scum of the earth, and a burden on society? By listening to identified others and amplifying their voices in their own vocabularies and grammar, Tripta Chandola’s praxis creates a methodological, political, and poetic rupture. Slums, she finds, are not anathema to the city’s past, present, or future. They are an integral component of urbanization and a foundational part of the city.With Listening into Others, Tripta Chandola poses the question: ‘Who owns the slum, and who determines which voices are heard? From where you are, listen with me.’

Validation methodology for addressing multimodal networks of the future

The following paper presents a methodology we developed for addressing the case of a multi-modal network to be implemented in the future. The methodology is based on a simulation approach and presents some characteristics that make a challenge to be verified and validated. To overcome this limitation, we proposed a novel methodology that implies interaction with subjectmatter experts, revision of current data, collection and assessment of future performance and educated assumptions. With that methodology we could construct the complete passenger trajectory Door to door in Europe. The results indicate that the approach allows to approach infrastructure analysis at an early stage to have an initial estimation of the upper boundary of performance indicators. To exemplify this, we present the results for a case study in Europe.