31,093 research outputs found

    Building Information Modeling (BIM) Based Solutions for Rapid Energy Modeling (REM) and High Performance Buildings [video]

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    NPS Defense Energy SeminarFederal, state and local governments are setting ambitious targets to reduce energy use of existing buildings through retrofits. It has been challenging for owners of large building portfolios (i.e. Cities, campuses and DoD installations) to identify and prioritize buildings and retrofit measures with the highest potential, due to the time, cost and expertise required for detailed energy audits. This presentation introduces new Rapid Energy Modeling (REM) capabilities for energy analysis of entire building portfolios with minimal data input. The energy modeling approach allows prioritization of buildings, evaluation of retrofit measures, and agile exploration of scenarios to achieve energy goals at a city-scale. Results are presented dynamically in the context of a digital 3D City Model and customizable dashboards. Additionally, the individual building information models (BIM) can be used for more detailed analysis of prioritized buildings. This approach can contribute to portfolio benchmarking/audit initiatives and can help guide data-driven planning and decisions for large building portfolios. This presentation will highlight a case study based on a project recently completed at the Tinker Air Force Base (Okla.) and workflow for high performance building design

    Energy Transparency in the Multifamily Housing Sector

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    Mirroring recent trends in other real estate sectors, the multifamily housing sector is subject to an increasing number of rules and regulations related to energy-performance benchmarking and performance disclosure. State and local governments are moving rapidly to institutionalize benchmarking and make energy performance information available in the real estate marketplace, while major lending institutions are taking initial steps to factor building energy performance into financial products. The goal of these new rules is to enable transparent building energy-performance information to drive energy efficiency improvements in multifamily housing that lower energy bills for residents; contribute to greater local housing affordability; and new jobs and services related to energy efficiency. Many multifamily owners and operators have never benchmarked the energy performance of their buildings, while other parties -- including state, local, and federal policymakers, tenants, utilities, and lenders -- have little or no access to building energy-performance information that can help shape real estate decisions or inform the development of policies, incentives, and financial vehicles to advance energy efficiency. This critical shortage of information about building energy performance has prevented property markets from valuing energy efficiency and severely undermined both public and private efforts to increase the energy efficiency of multifamily housing.While energy benchmarking and disclosure policies are an innovative approach to overcome energy-performance information gaps in the multifamily sector, several challenges must be addressed. The multifamily sector is fragmented and resists a one-size-fits-all approach, ranging from low-income public housing to luxury properties, all with varied sources of public and private financing. Policies must reflect and accommodate the diversity of both the building stock and its stakeholders. In many cases, underlying barriers continue to limit the ability of many multifamily owners to conduct benchmarking and other energy-performance assessment measures. This report is intended to serve as a guide for policymakers and multifamily stakeholders on benchmarking and disclosure rules and regulations. It provides an introduction to the multifamily housing sector, followed by a thorough review of existing benchmarking and disclosure policies and an assessment of continuing policy challenges and opportunities

    An empirical study of electricity and gas demand drivers in large food retail buildings of a national organisation

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    AbstractFood retail buildings account for a measurable proportion of a country's energy consumption and resultant carbon emissions so energy-operating costs are key business considerations. Increased understanding of end-use energy demands in this sector can enable development of effective benchmarking systems to underpin energy management tools. This could aid identification and evaluation of interventions to reduce operational energy demand. Whilst there are a number of theoretical and semi-empirical benchmarking and thermal modelling tools that can be used for food retail building stocks, these do not readily account for the variance of technical and non-technical factors that can influence end-use demands.This paper discusses the various drivers of energy end-uses of typical UK food retail stores. It reports on an empirical study of one organisation's hypermarket stock to evaluate the influence of various factors on annual store electricity and gas demands. Multiple regression models are discussed in the context of the development and application of a methodology for estimating annual energy end-use demand in food retail buildings. The established models account for 75% of the variation in electricity demand, 50% of the variation in gas demand in stores without CHP and 77% of the variation in gas demand in stores with CHP

    Giving In Numbers: 2014 Edition

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    Developed by CECP, in association with The Conference Board, 'Giving in Numbers: 2014 Edition' is based on data from 261 companies, including 62 of the largest 100 companies in the Fortune 500. The sum of contributions across all respondents of the recent survey on 2013 contributions totaled more than $25 billion in cash and in-kind giving. This report not only presents a profile of corporate philanthropy and employee engagement in 2013, but also pinpoints how corporate community engagement is evolving and becoming more focused following the end of the Great Recession. This is the tenth annual report on trends in corporate giving
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