Action-Oriented Energy Benchmarking for Nonresidential Buildings

2016 ◽  
Vol 104 (4) ◽  
pp. 697-712 ◽  
Author(s):  
Evan Mills
Keyword(s):  
Energy Benchmarking ◽  
Oriented Energy ◽  
Nonresidential Buildings

A Spectral Graph Theoretical Approach to Oriented Energy Features

2017 ◽  
Vol 31 (01) ◽  
pp. 1755001 ◽  
Author(s):  
Güleser Kalaycı Demir
Keyword(s):  
Theoretical Approach ◽  
Graph Laplacian ◽  
Texture Segmentation ◽  
Contour Detection ◽  
Feature Extraction Method ◽  
Spectral Graph ◽  
Graph Theoretical Approach ◽  
Novel Method ◽  
Oriented Energy ◽  
Complex Valued

In this work, we propose a novel method for determining oriented energy features of an image. Oriented energy features, useful for many machine vision applications like contour detection, texture segmentation and motion analysis, are determined from the filters whose outputs are enhanced at the edges of the image at a given orientation. We use the eigenvectors and eigenvalues of graph Laplacian for determining the oriented energy features of an image. Our method is based on spectral graph theoretical approach in which a graph is assigned complex-valued edge weights whose phases encode orientation information. These edge weights give rise to a complex-valued Hermitian Laplacian whose spectrum enables us to extract oriented energy features of the image. We perform a set of numerical experiments to determine the efficiency and characteristics of the proposed method. In addition, we apply our feature extraction method to texture segmentation problem. We do this in comparison with other known methods, and show that our method performs better for various test textures.

A Research on the Energy-Saving Operating Mode of Large-Scaled Public Building Based on Energy Management Contract in Shaanxi Province

2012 ◽  
Vol 517 ◽  
pp. 281-285
Author(s):  
Xiao Jie Zhang ◽  
Qi Song
Keyword(s):  
Energy Saving ◽  
Energy Management ◽  
Operating Mode ◽  
Shaanxi Province ◽  
Public Buildings ◽  
Public Building ◽  
Management Contract ◽  
Oriented Energy

The implementation of the mechanism of Energy Management Contract is of great significance in promoting the energy saving for buildings in China. Combining relevant contents in the Twelfth Five-year Plan of Shaanxi Province, this dissertation introduces the operating mode of the mechanism of EMC, analyses the main problems existing in the field of energy saving in large-scaled public buildings in Shaanxi Province, brings forward the innovative mode for developing market-oriented energy saving with Shaanxi Provincial characteristics based on EMC mechanism, and hopefully provides theoretical bases for the applications of EMC mechanism in the field of energy saving in large-scaled public buildings in our province.

Energy disclosure law in New York City

Facilities ◽  
2018 ◽  
Vol 36 (11/12) ◽  
pp. 571-583
Author(s):  
Eunhwa Yang ◽  
Yong-Cheol Lee ◽  
Qi Li
Keyword(s):  
New York ◽  
New York City ◽  
York City ◽  
Secondary Data ◽  
Large Sample Size ◽  
Content Type ◽  
Energy Star ◽  
Significant Difference ◽  
Energy Benchmarking ◽  
Local Law

Purpose This paper aims to primarily analyzing the state and pattern of current energy benchmarking progress on commercial buildings since the New York City’s energy disclosure law, Local Law 84: Benchmarking has been implemented. It then compares the yearly benchmarking progress of Leadership in Energy and Environmental Design (LEED)-certified and non-LEED-certified buildings as well as ENERGY STAR-certified and non-ENERGY STAR-certified. Design/methodology/approach For thorough analytics, the authors combined and examined four sources of data: New York City Local Law 84: Benchmarking, Primary Land Use Tax Lot Output, US Green Building Council and US Environmental Protection Agency. The data sets were combined using two primary keys: the Borough, Block, Lot (BBL) number and the building address. Four years of energy use intensity values were obtained and normalized by shrinking the range of deviance in weather. Findings The findings indicate a significant improvement in the benchmarking progress when controlling building size, building type, year of construction or the most recent renovation and the presence of renovation. Interestingly, there is no significant difference in the energy benchmarking progress between LEED- and non-LEED-certified buildings. Possible reasons are explored and discussed. Originality/value From a methodological perspective, the study benefited from data disclosure as well as open data sources and used secondary data with a relatively large sample size. Many studies in the construction industry are based on the case-study approach, which may affect generalizability and causality of research findings. This unique approach illustrates the potential of secondary data analysis in the industry.

scholarly journals Energy benchmarking in educational buildings in the city of Kragujevac - possibilities for energy efficiency improvement

2021 ◽  
Vol 18 (1) ◽  
pp. 95-114
Author(s):  
Ana Radojevic ◽  
Danijela Nikolic ◽  
Jasna Radulovic ◽  
Jasmina Skerlic
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Co2 Emissions ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy Sources ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement ◽  
Energy Benchmarking

The implementation of energy efficiency measures and use of renewable energy sources in educational buildings can significantly contribute to reducing energy consumption, but also to CO2 emissions in the entire public sector. The paper shows the comparison of energy consumption indicators for 61 elementary school buildings which have previously been divided in 12 groups, according to the period of construction and size, based on the national typology called TABULA, as the first step of further study on how to use the renewable energy sources. The aim of this paper is to use the energy benchmarking process to select representative facilities which are suitable for applying renewable energy sources, for their further energy efficiency improvement. Indicators of annual specific electricity consumption and CO2 emissions per unit area [kWh/m2] and per user [kWh/user] were calculated. After that, from two groups (in which the highest electricity consumption and CO2 emissions are 68.37% and 74.53% of the total consumption/ emissions), one representative facility was selected.

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