2,045 research outputs found

    Green Municipal Building Ordinances

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    In 2006 the town of Babylon, NY adopted a local law that requires LEED certification for “new construction of commercial buildings, office buildings, industrial buildings, multiple residence, or senior citizen multiple residence over 4,000 square feet”. As an incentive, the town will refund certification fees paid by developers if a new project achieves LEED status

    Analysis of Heat Transfer of Solar Water Collectors

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    This article provides recommendations for the provision of solar water, hot water to residential buildings, industrial, utilities and agricultural facilities using an air collector. In particular, the article is devoted to topical issues of the study of water heating systems based on solar air heaters and hot water supplies

    Large eddy simulation of urban features for Copenhagen metropolitan area

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    International audienceThe large eddy simulations employing the SUBMESO model with the urban soil layer model SM2-U were performed for the model domain covering the Danish Island of Sealand and including the Copenhagen metropolitan area. Monthly and diurnal cycle variability were studied for the net radiation, sensible and storage heat fluxes, surface's temperatures, and others. These were evaluated for selected urban vs. non urban related types of covers/surfaces and urban districts such as city center, high buildings, industrial, and residential. Results showed strong effects of urban features on temporal and spatial variability. They are useful and applicable for verification of numerical weather prediction models and development of urban canopy parameterizations

    До методики картування видів урбанофлори (на прикладі м. Харкова)

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    Розроблена картографічна основа м. Харкова для картування видів урбанофлори. За допомогою програмного забезпечення ArcGі 9.3 створені геоінформаційні шари даних (межа міста, річки, водоймища, залізниці) і шари функціонального зонування міста (лісопаркова і паркова зони, забудовані ділянки: одно- і багатоповерхова забудова, промислові території, рудеральні екотопи, пустирі), які формують карту-основу.We have developed a cartographic basis of Kharkiv city for mapping of urban flora species. Using ArcGі 9.3 software, we have created the geoinformation data layers (city borders, rivers, water storage basins, railways) and the layers of functional zoning of the city (forest park and park lands, built-up areas: single-and multi-story buildings, industrial sites, ruderal ecotopes, wastelands) which form the base map

    Nailing Down the Price of New Nonresidential Building Construction: Expanding the PPI to Include Indexes by Region and Type of Contractor

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    [Excerpt] In the early 2000s, the Bureau of Labor Statistics (BLS) Producer Price Index (PPI) program began developing price indexes to cover the new nonresidential construction segment of the U.S. economy. This event was precipitated by feedback from industry analysts, economic agencies, and trade associations indicating that there was a lack of regularly available construction data based on a clearly defined methodology. In particular, the Bureau of Economic Analysis needed price indexes for the calculation of the nonresidential construction segment of the nominal gross domestic product. As a result, five new nonresidential building PPIs were created: • New warehouse building construction • New school building construction • New office building construction • New industrial building construction • New healthcare building construction The types of buildings mentioned in these indexes were selected because they covered a majority of the new, nonresidential building construction segment of the economy. The new nonresidential building construction indexes were introduced into publication piecemeal between 2005 and 2013. Although these indexes represented a significant accomplishment in terms of expanding PPI coverage, some data users were looking for more detailed price index information for the construction sector. In December 2016, in response to the requests for regional data, BLS created two additional index structures that reflected more detailed data: • New nonresidential building construction by contractor type and region (236400) • New nonresidential building construction by region (236500) This Beyond the Numbers article explains how these indexes are calculated, what their structures are like, and how analysts can use the data to better understand price movements in the nonresidential building construction sector of the U.S. economy

    Internal combustion engine sensor network analysis using graph modeling

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    In recent years there has been a rapid development in technologies for smart monitoring applied to many different areas (e.g. building automation, photovoltaic systems, etc.). An intelligent monitoring system employs multiple sensors distributed within a network to extract useful information for decision-making. The management and the analysis of the raw data derived from the sensor network includes a number of specific challenges still unresolved, related to the different communication standards, the heterogeneous structure and the huge volume of data. In this paper we propose to apply a method based on complex network theory, to evaluate the performance of an Internal Combustion Engine. Data are gathered from the OBD sensor subset and from the emission analyzer. The method provides for the graph modeling of the sensor network, where the nodes are represented by the sensors and the edge are evaluated with non-linear statistical correlation functions applied to the time series pairs. The resulting functional graph is then analyzed with the topological metrics of the network, to define characteristic proprieties representing useful indicator for the maintenance and diagnosis

    Exploring the financial and investment implications of the Paris Agreement

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    A global energy transition is underway. Limiting warming to 2°C (or less), as envisaged in the Paris Agreement, will require a major diversion of scheduled investments in the fossil-fuel industry and other high-carbon capital infrastructure towards renewables, energy efficiency, and other low or negative carbon technologies. The article explores the scale of climate finance and investment needs embodied in the Paris Agreement. It reveals that there is little clarity in the numbers from the plethora of sources (official and otherwise) on climate finance and investment. The article compares the US100billiontargetintheParisAgreementwitharangeofotherfinancialmetrics,suchasinvestment,incrementalinvestment,energyexpenditure,energysubsidies,andwelfarelosses.WhiletherelativelynarrowlydefinedclimatefinanceincludedintheUS100 billion target in the Paris Agreement with a range of other financial metrics, such as investment, incremental investment, energy expenditure, energy subsidies, and welfare losses. While the relatively narrowly defined climate finance included in the US100 billion figure is a fraction of the broader finance and investment needs of climate-change mitigation and adaptation, it is significant when compared to some estimates of the net incremental costs of decarbonization that take into account capital and operating cost savings. However, even if the annual US$100 billion materializes, achieving the much larger implied shifts in investment will require the enactment of long-term internationally coordinated policies, far more stringent than have yet been introduced.</i

    Design Optimization of 3D Steel Frameworks Under Constraints of Natural Frequencies of Vibration

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    Steel multistorey 3D frames are commonly used in business and residential buildings, industrial sheds, warehouses, etc. The design optimization of tall steel buildings is usually governed by horizontal loadings, such as, wind load, as well as its dynamic behavior, for which the structure must have the stiffness and stability in accordance with the safety criteria established by codes. This chapter deals with sizing structural optimization problems, concerning weight minimization of 3D steel frames, considering natural frequencies of vibration as well as allowable displacements as the constraints of the optimization problem. The discrete design variables are to be chosen from commercial profiles tables. A differential evolution (DE) is the search algorithm adopted coupled to an adaptive penalty method (APM) to handle the constraints. Three different 3D frames are optimized, presenting very interesting results
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