Optimal operations and resilient investments in steam networks

Steam is a key energy vector for industrial sites, most commonly used for process heating and cooling, cogeneration of heat and mechanical power as a motive fluid or for stripping. Steam networks are used to carry steam from producers to consumers and between pressure levels through letdowns and steam turbines. The steam producers (boilers, heat and power cogeneration units, heat exchangers, chemical reactors) should be sized to supply the consumers at nominal operating conditions as well as peak demand. First, this paper proposes an Mixed Integer Linear Programing formulation to optimize the operations of steam networks in normal operating conditions and exceptional demand (when operating reserves fall to zero), through the introduction of load shedding. Optimization of investments based on operational and investment costs are included in the formulation. Though rare, boiler failures can have a heavy impact on steam network operations and costs, leading to undercapacity and unit shutdowns. A method is therefore proposed to simulate steam network operations when facing boiler failures. Key performance indicators are introduced to quantify the network’s resilience. The proposed methods are applied and demonstrated in an industrial case study using industrial data. The results indicate the importance of oversizing key steam producing equipments and the value of industrial symbiosis to increase industrial site resilience

Climate change adaptation in the boardroom

Abstract Climate adaptation is recognised by many of the world’s largest businesses as a global risk and one that requires critical attention. The World Economic Forum’s 2013 Global Risks Perception Survey, identified the ‘failure of climate change adaptation and rising greenhouse gas emissions as among those global risks considered to be the most likely to materialize within a decade’ (p.16). Yet despite action by many transnationals and international firms, it seems evident that most Australian companies appear to be struggling to move forward in responding to climate change impacts, apparently paralysed by short-term profit-first thinking, uncertain political risks and a corporate culture unused to volatility and disruption. Research approach This project set out to communicate adaptation to climate change to the “big end of town” and to gather soft data, acquire information and present issues back to the National Climate Change Adaptation Research Facility (NCCARF), the funder of this research. Our approach to the research challenge differed from a traditional technical, analytical or academic method. We used action-learning principles to engage a community in which we, as advisors to corporate Australia and as co-researchers, have social capital and standing. Through trusted information sharing networks, private closed-door meetings and one on one conversation with executives and senior management from over 100 companies we shared ideas, gathered, researched and refined information and tested our findings. Findings Our findings from the boardroom engagement include the following:   The Australian Government expects the private sector to adapt, yet little or no incentives exist to promote this behaviour. Autonomous adaptation as practiced may only benefit the lead actor while creating disbenefit for others (including other corporations, society and the environment). Market practices on current paradigms cannot be expected to meet greater societal adaptation needs. Further adaptation research is required in some areas to help guide shape and monitor adaptation for the private sector. A multiplicity of policy reform may be necessary, but crafting and implementing it is likely to remain beyond the capability of the Australian Public Service (APS) or individual Governments. Highly sophisticated mining, gas and some Asian owned technology companies are leading the way with many opportunities missed by Australian companies. Adaptation for the corporate sector is a key strategic issue, unlike mitigation and corporate social responsibility (CSR), as it benefits the corporate primarily. Insurance dependency may only be a short-term risk transfer mechanism as, in its current paradigm, it can mask risk, create a false sense of security and may impede adaptation.   Conclusion We hope that this report is of benefit to Australian organisations, policy makers, regulators and to researchers in adaptation science. This project shows that, on a whole, the Australian private sector is giving little consideration about the impacts climate change. This project has identified that considerable research gaps exist, but has also provided direction for organisations and researchers. Individual corporations and private sector peak bodies urgently need to explore the risks and opportunities that climate change and associated responses bring. This is especially so for the ICT, aviation, energy, insurance and finance sectors. Please cite this report as: Johnston, GS, Burton, DL, Baker-Jones, M, 2013 Climate Change Adaptation in the Boardroom National Climate Change Adaptation Research Facility, Gold Coast. pp. 81

Impacts of climate change and variability on fish value chains in Uganda

This study examines the vulnerability of fish pr oduction in Uganda, particularly as it r elates to the predicted impacts from climate change, using the concept of the value chain. The value chain approach has been recommended as a useful tool to study specific challenges facing a sector resulting from various drivers of change, including climate. Critically, such analyses can reveal context-specific response strategies to enhance a sector (Jacinto and Pomer oy 2010). The specific purpose of the study was to identify curr ent and potential impacts of climate change and corresponding adaptation strategies in fish value chains. The study builds upon information fr om earlier value chain analyses on fisheries and aquaculture production in Uganda to provide a more in-depth understanding of issues facing the fish industry, in particular, those to be incorporated in the CGIAR Resear ch Program Livestock and Fish

No. 08: Climate Change and Food Security in Southern African Cities

The current urban transition in the Global South is at the heart of discussions about the relationship between climate change and food security. This paper explores the links between climate change and food security within the context of the urban transition taking place in Southern Africa. Climate change is expected to negatively accentuate existing levels of urban food insecurity and these adverse impacts are likely to fall disproportionately on the poor. Researchers, planners and policymakers in Southern African cities are starting to explore how changes in weather associated with climate change are likely to affect urban lifestyles and systems. In order to do this, it is important to understand how climate science knowledge is used at the level of the city and how the impacts of climate change might affect city functioning at the metropolitan and household scales. One of the critical areas that has not been addressed in any detail is the extent to which climate change will affect the food security of the city and its inhabitants, especially within the context of high levels of poverty and widespread food and nutrition insecurity. This paper argues that it is important to understand the linkages between climate change and food security in Southern African cities to begin to design and implement pro-poor planning and programming

Building resilience: Adaptation mechanisms and mainstreaming for the poor

human development, climate change

Managing Water under Uncertainty and Risk: The United Nations World Water Development Report 4

This report introduces new aspects of water issues: 1) it reintroduces the 12 challenge area reports that provided the foundation for the first two World Water Development Reports (WWDR); 2) 4 new reports on water quality, groundwater, gender, and desertification, land degradation and drought; 3) in recognition that the global challenges of water can vary considerably across countries and regions, a series of 5 regional reports have been included; 4) a deeper analysis of the main external forces of freshwater resources and possibilities for their future evolution; 5) managing water under uncertainty and risk

The political economy of decarbonisation: exploring the dynamics of South Africa’s electricity sector

South Africa’s coal-dominated electricity sector, a key feature of the country’s minerals-energy complex, is in crisis and subject to change. This offers potential opportunities for decarbonisation. Despite positive examples of decarbonisation in South Africa’s electricity sector, such as a procurement programme for renewable energy, there are structural path dependencies linked to coal-fired generation and security of supply. Decarbonisation goes far beyond what is technologically or even economically feasible, to encompass a complexity of political, social and economic factors. Meanwhile, decision-making in electricity is highly politicised and lack of transparency and power struggles in the policy sphere pose key challenges. Such power struggles are reflected in national debates over which technologies should be prioritised and the institutional arrangements that should facilitate them

Governance for quality management in smallholder-based tropical food chains

The paper provides a framework that focuses on the linkages between several key dimensions of supply chain organization and performance of perishable tropical food products. The focus is on the relationship between governance regime and quality management. However, two other but related variables are taken into account because they impact on the relationship between governance and quality management. These variables are channel choice and value added distribution in the supply chain. Governance regime is reflecting how to enhance coordination and trust amongst supply chain partners and how to reduce transaction costs. Quality management is dealing with how to manage food technology processes such that required quality levels can be improved and variability in quality of natural products can be exploited. Governance regimes in relation to quality management practices are discussed to the extent that supply chain partners are able, or are enabled, to invest in required quality improve¬ments. Reduction of transaction costs, creation of trust-based networks and proper trade-offs between direct and future gains may offer substantial contributions to effective quality management and enforcement. This framework has been applied to nine case studies on smallholder-based food supply chains originating from developing countries (Ruben et al., 2007). Three of these case studies are discussed in this paper to illustrate what challenges can be derived from the case studies. The selected case studies concern fish originating from Kenya, mango originating from Costa Rica and vegetables produced in China.Agribusiness, Agricultural and Food Policy,