769 research outputs found

    Demand response within the energy-for-water-nexus - A review. ESRI WP637, October 2019

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    A promising tool to achieve more flexibility within power systems is demand re-sponse (DR). End-users in many strands of industry have been subject to research up to now regarding the opportunities for implementing DR programmes. One sector that has received little attention from the literature so far, is wastewater treatment. However, case studies indicate that the potential for wastewater treatment plants to provide DR services might be significant. This review presents and categorises recent modelling approaches for industrial demand response as well as for the wastewater treatment plant operation. Furthermore, the main sources of flexibility from wastewater treatment plants are presented: a potential for variable electricity use in aeration, the time-shifting operation of pumps, the exploitation of built-in redundan-cy in the system and flexibility in the sludge processing. Although case studies con-note the potential for DR from individual WWTPs, no study acknowledges the en-dogeneity of energy prices which arises from a large-scale utilisation of DR. There-fore, an integrated energy systems approach is required to quantify system and market effects effectively

    Evolving spatialities of digital life: troubling the boundaries of the smart city/home divides

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    Blunt and Sheringham (2019) call for home-city geographies but do not consider the role of digital technologies in mediating these relations (Koch and Miles, 2021). Digital geographers have largely examined manifestations of the digital city (smart city, platform urbanism, etc.) and the digital home separately. This paper explores the question of the smart home/city by reading it through a series of established analytical frames for reflecting on the relationship between domestic and urban space, namely: governance, domestication, thresholds, and dwelling. The first two call attention to the movement of certain activities, relations, or processes across traditionally understood boundaries between domestic and urban spaces. The third lens, thresholds, considers the ways boundaries between domestic and urban space are not simply transgressed but are actively re-negotiated through the new digital mediations. The fourth lens, dwelling, moves beyond a focus on such boundaries or divisions to instead highlight the ambiguity and indeterminacy of everyday life. Each lens opens a distinct set of questions about the evolving spatialities of digital life and the ways they are enacted, negotiated, and potentially contested

    Raising the carbonized forest: Science and technologies of singularization

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    Recognizing the potential of forests to store carbon, various policies and programs have emerged to enhance this potential as a climate mitigation strategy. While the effectiveness of these policies is highly debated, there can be no doubt that they have profoundly affected how forests are conceptualized, valued, and governed. In this article, we discuss how science supports this increasing carbonization of forests not just by focusing knowledge production processes on carbon, but also by supporting policies and programs that aim to efficiently manage forests to optimize their carbon value. We situate this process in a longer history to show how science operates as technology of singularization that, guided by principles of optimization and efficiency, contributes to the depoliticization and normalization of specific versions of the forest that foreground singular priority values, while subsuming and marginalizing of other ways of knowing, valuing, and living with forests. Although emerging practices in techno-science, including the adoption of smart technologies and automated forms of data generation and analysis, can potentially enhance understanding of multiple forest values, we argue that they are likely to intensify singularization and create ever tighter relationships between knowledge production and forest management. We conclude by discussing the need to counter and refuse singularization

    Evolving spatialities of digital life: Troubling the smart city/home divide

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    While feminist geographers have long aimed to trouble conceptions of the city/home (and, by extension, public/private) divides, the digital city and the digital home are still often theorized as separate phenomena within much digital geography literature. Drawing on previous work on feminist home-city geographies, this paper proposes four analytical frames for reflecting on the relationship between urban and domestic space in digital geographies: governance, domestication, thresholds, and dwelling. The paper explores each lens through a critical review of recent literature in digital geographies and related fields. It weaves this review through a speculative reading of the Eco Delta Smart City, an experimental development building the smart city from the home up in Busan, South Korea. We show how each lens calls attention to distinct sets of questions, actors, agendas, and relations–thus refusing any single reading of the project or of the broader trends around digitalization of which it is a part. In the process, we trace how digitalization does not simply trouble existing spatial categories, but rather makes them manifest in new ways for differently situated subjects

    Blockchain urbanism: Evolving geographies of libertarian exit and technopolitical failure

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    Libertarian “exit” imaginaries project new social, political, and economic structures separate from existing institutions in which “sovereign individuals” can opt-in to the governing system that fits their ideals. This paper traces libertarian exit imaginaries through a variety of territorial and technological projects. Demonstrating how these imaginaries evolve, it describes a recent proposal to build a semi-autonomous, blockchain-based smart city in Nevada. Reflecting on these projects, the paper highlights (1) their inevitable failure as they confront reality, (2) their role as spectacle, spreading libertarian ideology, and (3) their real-life impacts on distinct places and communities even when they fail or never materialize

    Robotics in place and the places of robotics: productive tensions across human geography and human–robot interaction

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    Bringing human–robot interaction (HRI) into conversation with scholarship from human geography, this paper considers how socially interactive robots become important agents in the production of social space and explores the utility of core geographic concepts of scale and place to critically examine evolving robotic spatialities. The paper grounds this discussion through reflections on a collaborative, interdisciplinary research project studying the development and deployment of interactive museum tour-guiding robots on a North American university campus. The project is a collaboration among geographers, roboticists, a digital artist, and the directors/curators of two museums, and involves experimentation in the development of a tour-guiding robot with a “socially aware navigation system” alongside ongoing critical reflection into the socio-spatial context of human–robot interactions and their future possibilities. The paper reflects on the tensions between logics of control and contingency in robotic spatiality and argues that concepts of scale and place can help reflect on this tension in a productive way while calling attention to a broader range of stakeholders who should be included in robotic design and deployment

    Models of demand response and an application for wastewater treatment plants1. ESRI Research Bulletin February 2020/04

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    Demand response can be defined as any change of the usual electricity demand pattern in response to a price signal from the electricity supplier. It is widely seen as a promising tool to increase energy system flexibility: electricity demand can increase when there is a surplus of electricity available, such as when wind levels are high, and can reduce when there is a shortage of electricity. In the industrial sector in particular, the potential for demand response can be significant. This is because electricity costs can be a big share of total costs and therefore there is a strong incentive to reduce electricity expenditures in order to be competitive. However, to date, the demand response from industrial electricity users has only been examined in a generic way, without taking account of their specific characteristics. Any results arising from these examinations are therefore of limited use for policy makers and industry participants
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