Green buildings and design for adaptation: strategies for renovation of the built environment

The recent EU Directives 2010/31 and 2012/27 provide standards of nearly zero energy buildings for new constructions, aiming at a better quality of the built environment through the adoption of high-performance solutions. In the near future, cities are expected to be the main engine of development while bearing the impact of population growth: new challenges such as increasing energy efficiency, reducing maintenance costs of buildings and infrastructures, facing the effects of climate change and adjusting on-going and future impacts, require smart and sustainable approaches. To improve the capability of adaptation to dynamics of transformation, buildings and districts have to increase their resilience, assumed as ‘the capacity to adapt to changing conditions and to maintain or regain functionality and vitality in the face of stress or disturbance’ (Wilson A., Building Resilience in Boston, Boston Society of Architects, 2013). This paper describes the research methodology, developed by the Department of Architecture, a research unit of Technology for Architecture, to perform the assessment of resilience of existing buildings, as well as the outcomes of its application within Bologna urban context. This methodology focuses on the design for adaptation of social housing buildings, aiming at predicting their expected main impacts (energy consumption, emissions, efficiency, urban quality and environmental sustainability) and at developing models for renovation

Screening of energy efficient technologies for industrial buildings' retrofit

This chapter discusses screening of energy efficient technologies for industrial buildings' retrofit

Simulation models and performance assessment of district heating substations

Development of new technologies and methodologies regarding district heating substation operational control strategies are increasingly found nowadays. At the same time a great number of modern buildings are provided with energy monitoring and control systems which supervise and collect operating data from different energy components. Accordingly, an exemplary district heating systems is being implemented in the city of Kortrijk in Belgium, as part of a demonstration zero-carbon neighborhood. This study deals with the energy performance assessment of one of the systems component -the consumer substationinstalled in this low-temperature district heating system. A comparative analysis of the energy performance with several existing district heating substations was carried out. Three different district heating substation models are set up (using TRNsys) for investigation of the gross energy use, energyefficiency and comfort issues. In order to evaluate the performance of the analyzed substations two scenarios concerning the space heating system (radiator or floor heating system) were considered. The study aims to investigate the impact of different operational circumstances on the performance of district heating substations. The study generate understandings for energy saving operational strategies to be developed. Results indicate that the design concept together with a suitable selection of the substation has an important impact on the energy performance of the entire system

A roadmap for China to peak carbon dioxide emissions and achieve a 20% share of non-fossil fuels in primary energy by 2030

As part of its Paris Agreement commitment, China pledged to peak carbon dioxide (CO2) emissions around 2030, striving to peak earlier, and to increase the non-fossil share of primary energy to 20% by 2030. Yet by the end of 2017, China emitted 28% of the world's energy-related CO2 emissions, 76% of which were from coal use. How China can reinvent its energy economy cost-effectively while still achieving its commitments was the focus of a three-year joint research project completed in September 2016. Overall, this analysis found that if China follows a pathway in which it aggressively adopts all cost-effective energy efficiency and CO2 emission reduction technologies while also aggressively moving away from fossil fuels to renewable and other non-fossil resources, it is possible to not only meet its Paris Agreement Nationally Determined Contribution (NDC) commitments, but also to reduce its 2050 CO2 emissions to a level that is 42% below the country's 2010 CO2 emissions. While numerous barriers exist that will need to be addressed through effective policies and programs in order to realize these potential energy use and emissions reductions, there are also significant local environmental (e.g., air quality), national and global environmental (e.g., mitigation of climate change), human health, and other unquantified benefits that will be realized if this pathway is pursued in China

A methodological comparison between energy and environmental performance evaluation

The European Union is working on strategies in order to increase the energy efficiency of buildings. A useful solution is to identify the energy performance of buildings through the Energy Performance Certificate (EPC), as it provides information for the comparison of buildings with different architectural typology, shape, design technology and geographic location. However, this tool does not assess the real energy consumption of the building and does not always take into account its impact on the environment. In this work, two different types of analysis were carried out: one based only on the energy efficiency and the other one based on the environmental impact. Those analyses were applied on a standard building, set in three different Italian locations, with the purpose of obtaining cross-related information. After the evaluation of the results, interventions on some parameters (walls insulation, windows frame, filler gas in the insulated glazing) have been identified in order to improve the energy behavior of the building with an acceptable environmental impact. The aim of this paper is to propose a methodology that integrates the EPC with green building rating systems, leading to a more conscious choice of retrofit interventions as a compromise between energy performances and environmental impact

Developing an Agenda for Change for New Jersey's Urban Water Infrastructure

A water infrastructure crisis looms in New Jersey's oldest and largest cities -- cities that comprise nearly one-fifth of the state's population and are projected to absorb much of its future growth, and yet have combined sewer systems, which carry both sewage and rainwater, dating to the 19th century. These combined sewers include overflow relief points that, during rain events, often result in combined sewer overflows (CSOs), which discharge raw sewage into waterways. These combined systems can also result in raw sewage backing up into city streets, parks and homes, threatening public safety and health. Of the nation's 860 communities plagued historically by CSOs, just 84 have yet to upgrade their systems or adopt plans to address the problem. Twenty-one of those 84 communities -- one-quarter -- are located in New Jersey. Urban water infrastructure challenges in New Jersey are not limited to the 21 cities with combined sewers. Even outside the CSO cities, polluted stormwater runoff is the state's leading threat to water quality. Many sanitary and separate storm sewer pipes and water-supply lines in the state are more than 100 years old and showing their age. The annual statewide loss (via leaks) of treated drinking water is estimated at 20 -- 22 percent, with some distribution systems losing as much as 45 percent. Water main breaks and resulting service outages are a common aspect of life in many cities. In addition, preexisting flooding problems are being exacerbated by more intense rainfall events driven by climate change, and such events are expected to become more frequent in the future. Most notably, in October 2012 Hurricane Sandy dramatically exposed the vulnerability of many of New Jersey's urban water systems to flooding and other storm damage. Collectively, the problems stemming from aging and degraded water-supply, wastewater and stormwater infrastructure threaten to disrupt daily life, commerce and industry in these communities, and stunt their future economic prosperity.In May 2014, The Johnson Foundation at Wingspread partnered with New Jersey Future and the Geraldine R. Dodge Foundation to convene a diverse group of New Jersey leaders to develop an agenda for change aimed at catalyzing action to address urban water infrastructure challenges in the state. Participants represented diverse perspectives, including those of local, state and federal government; public and investorowned water utilities; economic and community development organizations; environmental groups; businesses; and finance and technology companies. The discussions focused on establishing guiding principles for improving urban water infrastructure in New Jersey's cities, identifying the driver for action and agreeing on priority action steps to stimulate progress on the issue. The convening resulted in two products:a three-page consensus "Agenda for Change for New Jersey's Urban Water Infrastructure", which captured the collective priorities of the group, andthis report, which elaborates upon the consensus document and presents The Johnson Foundation's synthesis of the broader range of information, insights and ideas shared during the convening