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Debate about participatory design (PD) has focussed considerably upon process. Factors such as facilitation skills and commitment to a participatory ethos have been highlighted as factors mediating stakeholder engagement. Discussion has been driven overwhelmingly by experience of PD in the global North with citizens who enjoy full rights. This article considers engagement with encamped refugees in the global South. Here context has a significant impact upon engagement. Drawing on a four-year research project concerning shelter design we discuss dimensions of context that bear particularly upon PD efforts. As we illustrate, despite contextual constraint, it is possible to produce valuable knowledge about design together with residents. Moreover, attention to context can help achieve a more nuanced approach to the evaluation of PD initiatives.

Water distribution systems (WDSs) today are expected to continuously provide clean water while meeting users demand, and pressure requirements. To accomplish these targets is not an easy task due to extreme weather events, operative accidents and intentional attacks; as well as the progressive deterioration of the WDS assets. Therefore, water utilities should be ready to deal with a range of disruption scenarios such as abrupt variations on the water demand e.g. caused by pipe bursts or topological changes in the water network. This paper presents a novel methodology to automatically split a WDS into self-adapting district metered areas (DMAs) of different size in response to such scenarios. Complex Networks Theory is proposed for creating novel multiscale network layouts for a WDS. This makes it possible to automatically define the dynamic partitioning of WDSs to support further DMA aggregation / disaggregation operations. A real, already partitioned, water utility network shows the usefulness of an adaptive partitioning when the network is affected by an abnormal increase of the peak demand of up to 15%. The dynamic DMA reuses the assets of the static partitioning and, in this case, up to the 82% of resilience is restored using 94% of the assets already installed. The results also show that the overall computational and economic management costs are reduced compared to the static DMA partition while the hydraulic performance of the WDS is simultaneously preserved.

Thermal state of a conical antenna used for big data transfer was determined in this work. Its cooling is provided through porous media saturated with water-based copper nanofluid (NF) whose volume fraction varies in the 0% (pure water) [Formula: see text] range. Otherwise, the ratio between the thermal conductivity of the highly porous material and that of the fluid base (water) varies between 4 and 41.2. The solution is obtained by means of 3D numerical approach based on the volume control method using the SIMPLE algorithm in the large [Formula: see text]–[Formula: see text] Rayleigh number range. The average temperature of the antenna can be determined with the correlation proposed in this work for any combination of the thermal conductivity ratio, volume fraction and Rayleigh number. This new and original correlation makes it possible to determine the optimal values of these three influencing parameters to ensure the correct antenna’s operation.

Most renewable energy (RE) studies focus on technology readiness, environmental benefits and/or cost savings. The market permeation, viability and adoption of RE technologies such as micro hydropower (MHP), however, require the alignment of other interrelated factors, such as the socio-technical, institutional and political dimensions. This is particularly the case where the energy recovery potential in decentralised water networks is being explored as part of a wholesome sustainability strategy by and for individual and communal prosumers. This study employs a socio-technical approach to understand factors that influence the perceived viability and adoption of MHP in group water-energy schemes. Methods included a progressive literature review to formulate a conceptual framework for the implementation of MHP systems. The framework was validated using survey data from representative stakeholders from groups schemes in Ireland and Spain. These stakeholders were sampled and surveyed at the stage of considering the adoption of MHP in their water networks. The findings highlight the push–pull factors and discusses the opportunities and barriers to the adoption of MHP systems. It confirms that the market, institutional and policy context, cost and financial benefits, social support and collaborative services combine to influence the adoption of MHP technology. Thus, a framework for evaluating the socio-technical viability of MHP systems based on these more realistic integrated, multi-dimensional criteria is proposed.

The delivery of health, food, and shelter to the 68.5 million people displaced worldwide represents a significant challenge. Camps can house hundreds of thousands of people, and the provision of shelter on such a scale uses considerable amounts of energy and construction materials. Although there have been several attempts to calculate the embodied energy of small numbers of shelters, summary statistics for the embodied energy (EE) and embodied carbon (EC) in general remain unknown. This makes it impossible for those designing shelters to know where their solution sits relative to the median. The primary aim of this article is to resolve this gap by using data collected from eighty-one shelter designs in thirty-four countries to complete the first large scale and global estimate of the EE and EC of shelters. Second, it aims to introduce a web-based and open-access tool, developed to help any stakeholder or interested party obtain an idea of the EE and EC of their design. The median EE was found to be 920 MJ per m2 of footprint with a 95 percent confidence interval (CI) of 599 to 1200 MJ/m2. The median EC was 90 kgCO2e/m2; 95 percent CI [39.2, 99.6]. Importantly, when these figures were further normalised per annum of service life and statistically analysed, more robust shelters did not generally have a greater environmental footprint per annum. Just three material categories—metal, clay bricks/tiles, and concrete—were found to dominate EE and EC.

The need to conserve and preserve historical buildings and environments is prevalent in architectural discourse. On the other hand, changes in human habits, preferences, use as well as the contemporary approach to spatial planning and developments places new demands on the built environment. There is therefore the need for a new approach to the architectural design and renewal of buildings in historical contexts such as traditional villages. This new approach should resolve the inherent contradictions of preserving the old, whilst meeting contemporary needs. Extension thought mainly refers to solving contradiction problems through some methods such as transforming physical things and resolving problems. This study uniquely applies the principles and methods of Extenics as a new approach to resolving the socio-spatial contradictions between historic and contemporary built environments. It utilises a case study to showcase how Extenics and modes of extension thinking can be used to rejuvenate the architecture of old buildings in the ancient villages within physical and regulatory constraints. It presents a new thinking process for integrated, logical yet human-centred design solutions design. The findings show that Extenics provides a viable new way to deliver reconstruction and renewal without compromise to human and social needs. It also makes a significant contribution to how designers can be more creative, and make an innovative departure from the previous approaches to the process of protection and renewal of historic buildings.

Space syntax has been widely used in studies with historical components to developing a common analytical language for the comparative study of urban morphology across time and space by visual diagrams. This paper uses space syntax to analyse the inner and outer city parts of the daily life of residents in the capital cities of two dynasties, Tang and Song, to reveal the impact of changes in urban planning on the overall spatial structure of the city, the structure of commercial space, and the role of urban squares in the two dynasties under centralised rule. Based on the quantitative analysis, the results show significant differences between the Tang and Song dynasties in all three aspects of comparison. The changes in the Tang and Song dynasties’ capital cities result from the interaction between the materiality of the ancient Chinese capital city form and the spatial function of the city, and the analysis of space syntax is useful for interpreting their relevance.

Vernacular architecture serves as inspiration and learning material to create more impactful and meaningful contemporary building solutions. However, most research in this area focuses on the technical aspects of sustainability. There remains a gap in the sociocultural aspects of both contemporary and vernacular architecture. A coherent understanding of the indicators that inform this vernacular-inspired sustainable architecture is also still lacking. This study aimed to propose and categorize indicators of a theoretical eco-cultural sustainability framework and indicators. This was underpinned by a literature review of existing sustainability assessment frameworks and tools. A qualitative approach was used comprising 81 semi-structured interviews from two case study areas - historical and contemporary development, in Jordan. Framework and thematic analysis guided the analysis stage. Factors related to cultural appropriation were the most prioritised by participants and linked to sustainability. It was also found that due to its intangibility and complexity, most sustainability frameworks in the built environment only focus on the environmental criteria and have failed to integrate cultural indicators. Therefore, this study makes a significant theoretical and practical contribution in that it bridges this gap by proposing tangible metrics relating to intangible cultural factors so that this can be effectively incorporated into existing design assessment methods and tools.

Current and future smart cities are moving towards the zero-net energy use concept. To this end, the built environment should also be designed for efficient energy use and play a significant role in the production of such energy. At present, this is achieved by focusing on energy demand in buildings and to the renewable trade-off related to smart power grids. However, urban water distribution systems constantly carry an excess of hydraulic energy that can potentially be recovered to produce electricity. This paper presents a comprehensive review of current strategies for energy production by reviewing the state-of-the-art of smart water systems. New technologies (such as cyber-physical systems, digital twins, blockchain) and new methodologies (network dynamics, geometric deep learning) associated with digital water are also discussed. The paper then focuses on modelling the installation of both micro-turbines and pumps as turbines, instead of/together with pressure reduction valves, to further demonstrate the energy-recovery methods which will enable water network partitioning into district metered areas. The associated benefits on leakage control, as a source of energy, and for contributing to overall network resilience are also highlighted. The paper concludes by presenting future research directions. Notably, digital water is proposed as the main research and operational direction for current and future Water Distribution Systems (WDS) and as a holistic, data-centred framework for the operation and management of water networks.

Environmental hydraulics research includes the different domains of hydrodynamics, such as the investigation and implementation of the physical and experimental applications, and research into the quantity, quality, modelling and simulation of the attributes associated with flowing water. This topic is studied both from a technical and environmental point of view, with the objective of protecting and enhancing the quality of the environment. It is a cross-disciplinary field of study which comprises open channel/river flows and pressurised systems, combining, among others, new technological, social, and environmental hydraulic challenges. It provides researchers and engineers working in water-related fields with available information, new concepts and tools, new design solutions, eco-friendly technologies, and the advanced materials necessary to address the increasing challenges of ensuring a sustainable water environment—that is, a water environment effectively managed and adequated for generations to come by promoting the adaptation, flexibility, integration and sustainability of recognised environmental solutions. Using advanced numerical and physical models in field experiments, and tests in different types of laboratory set-ups, specialists in environmental hydraulics produce the best analyses, concepts, techniques, tools, and solutions to environmental hydraulic problems, as well as in relation to the water, energy and environmental nexus.

The optimal and sustainable management of water distribution systems still represent an arduous task. In many instances, especially in aging water net-works, pressure management is imperative for reducing breakages and leakages. Therefore, optimal District Metered Areas represent an effective solution to decreasing the overall energy input without performance compromise. Within this context, this paper proposes a novel adaptive management framework for water distribution systems by reconfiguring the original network layout into (dynamic) district metered areas. It utilises a multiscale clustering algorithm to schedule district aggregation/desegregation, whilst delivering energy and supply management goals. The resulting framework was tested in a water utility network for the simultaneously production of energy during the day (by means of the installation of micro-hydropower systems) and for the reduction of water leakage during the night. From computational viewpoint, this was found to significantly reduce the time and complexity during the clustering and the dividing phase. In addition, in this case, a recovered energy potential of 19 MWh per year and leakage reduction of up to 16% was found. The addition of pump-as-turbines was also found to reduce investment and maintenance costs, giving improved reliability to the monitoring stations. The financial analyses to define the optimal period in which to invest also showed the economic feasibility of the proposed solution, which assures, in the analysed case study, a positive annual net income in just five years. This study demonstrates that the combined optimisation, energy recovery and creation of optimized multiple-task district stations lead to an efficient, resilient, sustainable, and low-cost management strategy for water distribution networks.

Purpose The purpose of this paper is twofold: first, to investigate the flood impact on a detached dwelling based on physical attributes related to the positioning, form and orientation of the house, and second, to investigate the effectiveness of property-level protection (PLP) to mitigate the direct structural damage of the house and the degree of floodwater ingress within the house. Design/methodology/approach The methods included modelling and simulation within the ANSYS Fluent® computational fluid dynamics software. Flooding scenarios with constrained parameters using theoretical modelling methods/tools were used to test the research hypotheses. Therefore, the results obtained will match the what-if scenarios considered if/based on the standard equations and assumptions made in the idealised model. Findings It was found that the position, orientation and form of an individual dwelling with brick and block construction informs the impact of the applied pressure on the structure and water ingress. Increase in pressure on the structure was noted from 0.3 m. All examined PLP mitigated the risk of structural damage if applied in consideration with other interventions e.g. mortar sealing. The use of non-return valves could potentially increase the pressure on the structure, but was also found to be effective in reducing water ingress. Findings should be considered in conjunction with the assumptions and exceptions of this study. Research limitations/implications The limitations of this study are that the findings are based on an idealised model of a single detached house, with no landscape obstruction to the watercourse. This mathematical approach concerned with developing the normative models may therefore not fully describe the real-world complex phenomena. But it provides the first vision and an objective basis to answer the questions under study, and to propose usable outputs. Flooding caused from internal sources (e.g. bursting of pipes, roof leaks) or seepage from the ground and moisture through the walls were excluded. Building content was not modelled. Practical implications Common property-level flood interventions are typically tested to mitigate water ingress to the house. This study extends this approach to include the prevention of structural damage to the external walls; this can help to avoid the indiscriminate use of property-level flood prevention solutions without full understanding of their degree of effectiveness or impact on the building’s structural integrity. This study is practically significant because it provides outputs and means to examine which intervention(s) are better for delivering flood protection to a standard brick/block detached house type. This knowledge is highly beneficial for relevant stakeholders who can use it to deliver effective property-level flooding resilience measures. Originality/value The study provides useful insights for property owners and building professionals to explore suitable, cost-effective single property-level protection against flooding. Furthermore, the effective implementation of interventions can be used to achieve a customised, “fit for purpose” resilience retrofit.

Flooding is increasingly global challenge due to climate change and urban development practices. It can also be devastating to those affected. In the United Kingdom, it is projected that the number of people at high risk of flooding could rise from 1.5 to 3.5 million by 2080. Currently 400,000 homes and 75,000 businesses in England have an annual chance of flooding. In the UK, the Environment Agency provides useful information on flood risks for a given location. This information is supported with different guides by the local Councils on how to prepare for, and get help during flooding. What remains unclear and easy to access are customisable retrofit actions based on local flood risks, necessary for an individual or household to implement anticipatory retrofit actions, thereby improving the resilience of their homes. With this in mind, and knowing that studies about flood impacts focuses more on new construction or infrastructure solutions, this study aimed to provide a tangible solution to raise the awareness of people living in a flood area about the level of risk they are exposed to, and to aid decision-making about effective preventive solutions specifically designed for their house, in an autonomous way. The output is a decision-support tool developed to consolidate information about flood risks and present customised retrofit measures. The tool refers to the notions of damage and vulnerability of private housing to inform its operational diagnostic methodology. The output is a “to do list” of retrofitable work to increase resilience of the house against flood. 40 potential users evaluated and delivered positive feedback on the usefulness and functionality of the tool to raise awareness and improve resilience action. Future studies aim to fine-tune the tool and scale up the study.

The growing displacement crisis leaves many housed in simple shelters, which are bespoke to each setting, often sited in harsh climates and normally unconditioned. Measurements have shown that the thermal environment within the shelters can be life-threatening. Hence aid agencies are interested in improving these conditions. Unfortunately, given the skill set within agencies, there is little possibility to use complex thermal modelling to predict the impact of different materials or constructions. Hence the need to provide simple methods. In this work, we introduce a new physics-based thermal model (ShelTherm) for simple structures and encapsulate it within a tool designed to be used by humanitarian staff. Unlike other reduced models, the method is capable of dealing with high ventilation/infiltration rates, thin materials (such as tarpaulin) and high U-values. The model was validated over a wide variety of architectures, materials and climates. Mean error against observed data from a variety of real shelters was +0.94 °C (s.d. 0.79 °C), comparing favourably against the well-known reduced model CIBSE Admittance method (+4.95 °C, s.d. 0.89 °C) and the industry standard Energy+ (+0.60 °C, s.d. 0.32 °C). ISO 13792:2012(E) classified it as a Class 1 model, the highest possible. The differences between the new method and Energy+ across block, tarpaulin and stone shelters in Ethiopia, Bangladesh and Nepal were always less than 1.3 °C, and +0.24 °C for shelters in a mild climate. Humanitarian workers classed the tool as “easy” or “very easy” to use. The typical time to model a shelter by a first-time user was 34 minutes. ShelTherm can hence be seen as highly fit-for-purpose due to its overall accuracy and ease of use.

This paper employed a socio-technical approach to assess the feasibility of solar PV installations by independent Group Water Schemes in Ireland, examining the complex relationship between water and energy demands in conjunction with stakeholder perspectives in these communities. The temporal resolution of energy data and the unique characteristics of the schemes (size, connection type; energy demand breakdown, etc.) were key factors influencing the solar PV design process. A poor daily correlation (R2 = 0.22) contrasted with strong weekly (R2 = 0.91) and monthly (R2 = 0.99) correlations between energy demands and water consumption, highlighting the technical design challenges for a balanced solar PV and water services system. The presence of a water storage tank offers a potential water and energy storage facility for a solar PV installation, to balance the intermittent energy demands with the diurnal water consumption profile. Community stakeholders were aware of solar PV’s potential, with two GWSs moving towards installation. Key priorities were economic viability and associated environmental benefits i.e. added value to these communities. Stakeholders require knowledge sharing on solar PV, its operations and financial support, to help make an informed decision on this technology. The successful implementation of solar PV can provide energy and water security in these rural water communities.

Purpose This study aims to determine and consolidate the multi-scale components that inform anticipatory action for resilience; propose a conceptual framework for the collaborative and holistic design, delivery and management of resilience at both the macro and micro scale; and test the efficacy of the framework to deliver sustainable (sustained) resilience. Design/methodology/approach A conceptual framework was proposed by consolidating what was learnt from literature review. Case studies were then used to explore the efficacy of the framework to deliver resilience. The applicability of the specific measures was also examined to determine the extent by which they support anticipatory action and resilience capacity. Findings It was found that a combination of active, latent, evolving and to some extent improvised yet integrated solutions can support anticipatory flood resilience at the micro, meso and macro scale, as well as the physical and social domains. Research limitations/implications Socio-physical resilience improves when policy makers, designers, planners and engineers work together to deliver anticipatory solutions prior to a natural disaster. Further, findings confirm that resilience can be achieved in both new and existing urban contexts. Social implications The multi-scale, integrated strategies can inform anticipatory practices, which, in turn, may reduce social vulnerability during and after natural events such as flooding. Originality/value This work lays the foundation for further theoretical and practical work on socio-spatial resilience and provides the learning-based structure within which policy makers, planners and architects can administer interventions for the practical delivery of planning-scale and building-level resilience.

The junction temperature of the quad flat no-lead with 16 and 32 leads (QFN16 and QFN32) electronic packages subjected to free convection is highly affected by their encapsulating resin's thermal conductivity. This study considers a variation of this conductivity between −80% and +100% of the average value measured on an industrial prototype by means of the Transient Plane Source method. The three dimensional numerical solution based on the control volume formulation shows that the thermal trend is of exponential type for these components but with different functions. The proposed relationships allow the calculation of the junction temperature of both QFN16 and QFN32 according to the power generated varying between 0.1 and 1W, and the inclinations relative to the horizontal plane in the range 0–90° (horizontal and vertical positions respectively). The law governing the influence of conductivity on the junction temperature shows that a more conductive resin does not significantly lower the junction...

During the last decades, achieving water efficiency in buildings has increasingly become an important challenge in the scope of sustainability. Water consumption is directly related to individual conduct. Despite the various technological improvements in fixtures and appliances, their performance will be influenced by human preferences and behavior. As a result, the potential for effective water consumption saving is influenced by behavior change as well as water-efficient fixtures and appliances. This work evaluates the impact of user preferences and behavior change on the water-efficient performance of tap aerators in a case study building: the Department of Civil Engineering building of the University of Aveiro, Portugal. Four aerators with different discharge reductions and types were installed in the toilet’s washbasins and the user’s preferences and behavior change measured through direct and online questionnaires. It was observed that the effective water consumption reduction (15 to 49%) was less than the discharge reduction (30 to 70%), confirming that user factors influence water savings. Water use reductions in the tested range (2.0 to 6.7 l/min) also varied according to gender, with male users using less water than their female counterparts. It was noted that an awareness of sustainability values prevailed amongst the users when confronted with the choice between comfort and water efficiency, although differences were observed in the user preferences regarding the various aerators. When confronted with the information that the lower discharge aerator would contribute to a reduction of about 70% on the water discharge, 25% of the users agreed with its use, even if it resulted in a certain degree of dissatisfaction. In comparison, only 8% of the users completely disagreed with its installation. On average, the water consumption reduction was 46% smaller than the discharge reduction achievable with the aerator alone. This further confirms the user factors inform the degree of water savings that is achievable from water-efficient fittings and fixtures.

The Demystifying the Shower Experience research project is a comprehensive multi-stage study aimed at understanding the multi-dimensional aspects of the shower, including; showering products, habits, behaviour and perceptions. The objective was to determine: if a functionality mismatch occurs between the design and desired functionality of the product, and what specific factors contribute to this mismatch. To achieve the aim, simple heuristic trials packaged as a 12 showerheads in 12 weeks Challenge were conducted involving 12 participants – 6 male and 6 female. It was found that showerhead design factors such as colour, shape and size are inconclusive in determining the water efficient use, and perception of a positive shower experience. However, factors such as the number of function inform user choice and preference of which showerhead to choose and use. Further, sprout type and mode of operation both influence user perception of the performance factors such as feel, pleasantness, enjoyability, time taken and effectiveness of clean. And these factors in turn significantly affect the user perception of what constitutes a ‘good’ shower experience. It was also found that a functionality mismatch does occur in sustainability products if performance, and not design factors, fail to meet with user expectations. This work is novel because few, if any, studies of this nature have specifically been undertaken outside of the laboratory environment, and significant because the findings highlight the importance and influence of the physical design and performance-informing features on the user perception of the product itself. And for showerheads, this affects the satisfaction with the resulting showering experience and, therefore the propensity to use less water in the shower for an effective clean.

There has been a rapid urbanization in china at the expense of agricultural and rural development. Consequently, before 2010 the traditional villages were dying off at the speed of 100 per day. To save the precious culture heritage and avoid the unbalanced development in urban and rural areas, the better approach is to make such villages more liveable through balanced preservation and development. This will motivate vitality and help to achieve long-term sustainability. This work investigates how to apply Extenics ideas and methods to solve the contradictions between preservation and development in Lingshui village, China. It describes contradictions quantitatively with element theory of Extenics in order to define the required extent of change and protection. That is, to modify the sustainability of traditional village to better understand the overall value of protection and development risks and to make informed judgements about the required extent of actions. The paper concludes with recommendations for testing the efficacy of its findings i.e. to use Extenics theory for better, liveble and resilient village environments.

Studies show that user behaviours have not necessarily changed, despite the prevalence of water-efficient products in the market. One reason is because the technical emphasis for delivering the water use efficiency of products has focused on reducing the flow rate. Therefore, this study was undertaken to examine the physical parameters that define the technical efficiency of showerheads against the experiential performance (and therefore the satisfaction with the showerheads). These parameters were measured in a controlled laboratory environment and the findings were triangulated against user feedback from in-home trials. Synergies between the laboratory data and user feedback were found. Notably, it was found that water spray intensity, distribution, and temperature loss all impact the quality of showering experience. These factors also influence shower duration—and thus the volume of water used in the shower. Significantly, these technical metrics affected the overall experiential performance of such products from the users’ perspective. Therefore, the design of water-efficient showerheads, in addition to delivering water discharge savings, should avoid poor spray distribution, intensity, and heat retention. The implications of the findings are that water efficiency labelling and product standards should extend beyond the emphasis on limiting the flow rates—typically to 9 l per min for showerheads. This study shows good merit for including the spray intensity (pressure), distribution, and degree of heat loss, in addition to the discharge rate, as part of the performance and efficiency considerations of showerheads.

The Circular Economy (CE) is a well-established sustainability framework within the industry and business contexts, with strong advocates such as the Ellen MacArthur Foundation. It is designed to be restorative and regenerative, and through a continuous cycle aims to keep products, components, and materials at their highest utility and value at all times. It focuses on preserving and enhancing natural capital, optimising resource yields, and minimising system risks by managing finite stocks and renewable flows. The CE principles align strongly with the Sustainable Development Goal (SDG) framework, which is a relevant lens for further understanding how industry can strategically address environmental and social issues. However, while the CE framework claims to account for the three inter-related and co-evolutionary sustainability dimensions of social, economic and environmental it is challenged for its overt emphasis on the latter two aspects with less done to achieve social value and benefits for those involved in creating and managing the restorative and regenerative cycles. This chapter aims to address this key gap by critically reviewing relevant literature and arguing for a more socially integrated and progressive CE. It develops and presents an original conceptual framework called the Spiral Economy (SE).