scholarly journals Assessing the trends of energy use of public non-domestic buildings in England and Wales

2018 ◽  
Vol 40 (2) ◽  
pp. 176-197
Author(s):  
S Hong ◽  
A Mylona ◽  
H Davies ◽  
P Ruyssevelt ◽  
D Mumovic
Keyword(s):  
Energy Efficiency ◽  
Public Sector ◽  
Energy Use ◽  
Reference Points ◽  
Growth Strategy ◽  
Capital Investments ◽  
England And Wales ◽  
Informed Decisions ◽  
Operational Energy ◽  
Energy Use Intensity

Accessing sufficient data for understanding how energy is used in non-domestic buildings is deemed to be a challenge in many countries. In the UK, such a challenge has led to limited understanding of long-term changes in energy use of buildings. This study aims to develop a deeper understanding of the trends in energy use across the public sector non-domestic buildings in England. Display energy certificate (DEC) data which relate to 59,740 public sector non-domestic buildings in England and Wales were analysed. Statistical analyses were carried out to understand both the latest patterns of energy use and how they have changed between 2010 and 2016. The patterns of energy use of various public-sector buildings were found to have gradually changed over the seven-year period. An imminent release of a revised dataset was deemed necessary for understanding the performance of buildings to support the aspirations set out in the clean growth strategy. The study pointed to a need for regularly gathering and sharing data for understanding the changes in the patterns of energy use of the stock. Developing a framework that can facilitate this would enable various stakeholders make informed decisions for improving energy efficiency of the UK’s non-domestic buildings. Practical application: Statistics on electrical and fossil-thermal energy use intensity provide up-to-date reference points for assessing operational energy efficiency of public sector buildings. Principles for developing a framework are provided to support various stakeholders make informed decisions on for example setting design targets or making capital investments.

scholarly journals A study on energy consumption of hotel buildings in Vietnam

2018 ◽  
Vol 12 (5) ◽  
pp. 109-116
Author(s):  
Mac Van Dat ◽  
Tran Ngoc Quang
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Air Conditioning ◽  
Energy Use ◽  
Ho Chi Minh City ◽  
Consumption Energy ◽  
Energy Use Intensity ◽  
End Use

This paper aims to determine energy use intensity (EUI) and the percentage of end-use energy consumption in hotel buildings in major cities of Vietnam, including Hanoi, Da Nang and Ho Chi Minh City (HCMC). Data from 32 hotels were gathered from the website on energy efficiency promotion of Ministry of Construction. The average EUI in the whole country was 151 kWh/m2.year, and the figures for Hanoi, Da Nang, and HCMC were 184; 71 and 212 kWh/m2.year, respectively. At the same time, the structure of end-use energy consumption was estimated, of which 54% for heating, ventilation and air conditioning (HVAC), 10% for lighting, 19% for plug equipment and 17% for lifts. Keywords: energy consumption; energy use intensity (EUI); end-use energy consumption.

scholarly journals Environmental Impact Assessment of Renovated Multi-Apartment Building Using LCA Approach: Case Study from Lithuania

2021 ◽  
Vol 13 (3) ◽  
pp. 1542
Author(s):  
Vidhyalakshmi Chandrasekaran ◽  
Jolanta Dvarioniene ◽  
Ausrine Vitkute ◽  
Giedrius Gecevicius
Keyword(s):  
Climate Change ◽  
Energy Efficiency ◽  
Energy Use ◽  
Hot Water ◽  
Environment Impact ◽  
Total Energy Consumption ◽  
Operational Energy ◽  
Modernization Process ◽  
The Impact ◽  
Current Energy

In Europe, more than 75% of buildings are energy inefficient according to current energy standards. These buildings account for 40% of total energy consumption. Therefore, addressing the energy efficiency of existing buildings through various renovation measures remains of critical importance. In this study, two differently renovated multi-apartment buildings were selected to evaluate its environment impact using life cycle assessment. The buildings were built during the early 1980s, which did not meet the current energy efficiency standards. In recent times, these buildings were revised by Governmental agencies through the modernization process. The aim of the assessment is to study the environmental impacts associated with different renovation measures that has been carried out. This assessment covers the impact of new materials added, and the operational energy use. The study reveals that renovation stage accounts for 19% CO2 emission. The renovated buildings with renewable measures have a significant impact over climate change than the conventional renovation measures. Moreover, the potential savings in thermal energy used for space heating and domestic hot water preparation are 25% and 40% after conventional and renewable measures renovation, respectively. It was concluded that the total climate change potential could be reduced from 12% and 48% by retrofitting combined with renewable energy measures.

The Environmental Footprint of Data Centers

2009 ◽  
Author(s):  
Amip Shah ◽  
Cullen Bash ◽  
Ratnesh Sharma ◽  
Tom Christian ◽  
Brian J. Watson ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Data Center ◽  
Energy Use ◽  
Data Centers ◽  
Evaluation Metrics ◽  
Environmental Footprint ◽  
Diverse Range ◽  
Use Of Data ◽  
Operational Energy

Numerous evaluation metrics and standards are being proposed across industry and government to measure and monitor the energy efficiency of data centers. However, the energy use of data centers is just one aspect of the environmental impact. In this paper, we explore the overall environmental footprint of data centers beyond just energy efficiency. Building upon established procedures from the environmental sciences, we create an end-to-end life-cycle model of the environmental footprint of data centers across a diverse range of impacts. We test this model in the case study of a hypothetical 2.2-MW data center. Our analysis suggests the need for evaluation metrics that go beyond just operational energy use in order to achieve sustainable data centers.

Evaluating Life-Cycle Environmental Impact of Data Centers

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Amip Shah ◽  
Cullen Bash ◽  
Ratnesh Sharma ◽  
Tom Christian ◽  
Brian J. Watson ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Environmental Impact ◽  
Energy Use ◽  
Data Centers ◽  
Evaluation Metrics ◽  
Environmental Footprint ◽  
Diverse Range ◽  
Use Of Data ◽  
Operational Energy

Numerous evaluation metrics and standards are being proposed across industry and government to measure and monitor the energy efficiency of data centers. However, the energy use of data centers is just one aspect of the environmental impact. In this paper, we explore the overall environmental footprint of data centers beyond just energy efficiency. Building upon established procedures from the environmental sciences, we create an end-to-end life-cycle model of the environmental footprint of data centers across a diverse range of impacts. We test this model in the case study of a hypothetical 2.2-MW data center. Our analysis suggests the need for evaluation metrics that go beyond just operational energy use in order to achieve sustainable data centers.

scholarly journals Energy Efficiency Indicators for Hotel Buildings

2021 ◽  
Vol 13 (4) ◽  
pp. 1754
Author(s):  
Luis Martin Dibene-Arriola ◽  
Fátima Maciel Carrillo-González ◽  
Sandra Quijas ◽  
María Carolina Rodríguez-Uribe
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Tropical Regions ◽  
Intensity Index ◽  
Indicator Data ◽  
Energy Use Intensity ◽  
Energy Audits ◽  
The Tropics ◽  
Efficiency Indicators ◽  
Total Average

Hotels are energy-intensive buildings; therefore, in this study, we investigate the indicators used for measuring the energy efficiency of one- to five-star hotels, in temperate and tropical regions of Asia, Europe, and Africa. There are several indicators for measuring energy intensity, but we found that the “total average annual energy use intensity index”, measured in kilowatt-hours per square meter per year (kWh/m2 year), was most often used. Surveys and energy audits are the methods used most often to collect the indicator data. Hotels in the tropics tend to consume more energy than those located in temperate zones, with four- and five-star hotels consuming the most energy.

scholarly journals Energy Efficiency in Church Building Based on Sefaira Energy Use Intensity Standard

2021 ◽  
Vol 738 (1) ◽  
pp. 012013
Author(s):  
Aisyah Nabilah ◽  
Hanna Putri Devita ◽  
Yohannes Van Halen ◽  
Aldissain Jurizat
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Church Building ◽  
Energy Use Intensity

scholarly journals A Life Cycle Cost Analysis of Structural Insulated Panels for Residential Buildings in a Hot and Arid Climate

Buildings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 255
Author(s):  
Muataz Dhaif ◽  
André Stephan
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Energy Demand ◽  
Energy Use ◽  
Residential Buildings ◽  
Climatic Conditions ◽  
Building Envelope ◽  
Structural Insulated Panels ◽  
Operational Energy

In hot and humid climatic conditions, cooling tends to dominate building thermal energy use. Cooling loads can be reduced through the adoption of efficient building envelope materials, such as Structural Insulated Panels (SIPs). This study quantifies the life cycle cost and operational energy of a representative case-study house in Bahrain using SIPs and hollow concrete blocks (HCBs) for the envelope over a period of 50 years. Operational energy is calculated using a dynamic energy simulation tool, operational costs are calculated based on the energy demand and local tariff rates, and construction costs are estimated using market prices and quotations. The life cycle cost is quantified using the Net Present Cost technique. Results show that SIPs yield a 20.6% reduction in cooling energy use compared to HCBs. For SIP costs of 12 and 17 USD/m², the SIP house was cheaper throughout, or had a higher capital cost than the HCB house (breaking even in year 33), respectively. We propose policy recommendations with respect to material pricing, electricity tariffs, and energy efficiency, to improve the operational energy efficiency of houses in Bahrain and similar countries along the Arabian Peninsula.

scholarly journals Characterising the English school stock using a unified national on-site survey and energy database

2021 ◽  
pp. 014362442110306
Author(s):  
Sung Min Hong ◽  
Daniel Godoy-Shimizu ◽  
Yair Schwartz ◽  
Ivan Korolija ◽  
Anna Mavrogianni ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Large Scale ◽  
Energy Use ◽  
Census Data ◽  
Energy Performance ◽  
Building Stock ◽  
Site Survey ◽  
Property Data ◽  
Operational Energy ◽  
Data Survey

The recent commitment towards a net-zero target by 2050 will require considerable improvement to the UK’s building stock. Accounting for over 10% of the services energy consumption of the United Kingdom, the education sector will play an important role. This study aims to improve the understanding of English primary and secondary schools, using national on-site survey data with several large-scale disaggregate data sources. Property Data Survey Programme (PDSP) data on 18,970 schools collected between 2012 and 2014, Display Energy Certificate (DEC) and school census data from the same period were linked and processed to form a unified schools dataset. Statistical analyses were undertaken on 10,392 schools, with a focus on energy performance, and the relationship to several building and system characteristics. The analyses may point to the possibility of assessing operational energy use of schools in a more disaggregate manner. New datasets with detailed and accurate disaggregate information on characteristics of buildings, such as those used in this study, provide opportunities to develop more robust models of the building stock. Such data would provide an opportunity to identify pathways for reducing carbon emissions effectively and provide lessons for other organisations seeking to achieve significant reductions for achieving climate change goals. Practical Application: Outputs from this study are expected to benefit researchers in various organisations to establish a basis for typical buildings and their performance, facilities managers to assess the operational energy efficiency of school buildings, and relevant public bodies to make informed decisions on improving energy efficiency of the school stock.

Interoperable IoT system that could adapt local context of the built environment

Impact ◽  
2020 ◽  
Vol 2020 (6) ◽  
pp. 52-54
Author(s):  
Tomonari Yashiro
Keyword(s):  
Energy Efficiency ◽  
Built Environment ◽  
Energy Use ◽  
Energy Savings ◽  
Cost Savings ◽  
Local Context ◽  
Smart Lighting ◽  
Efficiency Cost ◽  
Operational Energy ◽  
Iot Devices

IoT technology has great potential to transform the built environment and, in doing so, create energy savings. With operational energy use in buildings causing around 30 per cent of CO2 gas emissions, and demand for energy use in buildings on the rise, it is necessary to develop measures to reduce consumption, and IoT could hold the key to this. Just a few examples of ways that this can be achieved are: real-time energy monitoring, with IoT smart sensors measuring the power consumption of a building to show how and where energy is used; smart lighting, whereby unnecessary lighting is switched off and energy saved; and smart metering systems, leading to higher energy efficiency, cost savings and new data sources. Indeed, IoT devices in buildings can collect important data, which has a number of important applications, and the long-term value of IoT devices in buildings comes from mining the data collected by sensors and devices as this can be used to enhance building performance and efficiency. Professor Tomonari Yashiro, based at the Institute of Industrial Science, The University of Tokyo, is exploring how ICT and the IoT could help improve the sustainability and energy efficiency of buildings.

scholarly journals Pengembangan Perangkat Lunak Efisiensi Energi di Gedung Ins. Kabupaten X, Banten

2018 ◽  
Vol 7 (2) ◽  
pp. 92
Author(s):  
Agung Wahyudi Biantoro
Keyword(s):  
Energy Efficiency ◽  
Data Processing ◽  
Data Storage ◽  
Energy Use ◽  
Electrical Energy ◽  
Energy Audit ◽  
Audit Process ◽  
Lighting Condition ◽  
Software Applications ◽  
Energy Use Intensity

ABSTRACT Electrical energy is one of the necessities of life that are important to us, but excessive consumption of electrical energy will bring adverse effects. The effort that needs to be done for energy efficiency is to conduct an energy audit in the building. An energy audit is one way to find out whether the level of energy consumption in the building, whether included in the wasteful or efficient category. In conducting the energy audit process it is necessary innovation for data processing can be done quickly and cost-effectively. Data processing is done by making software applications, using Visual Studio program that is connected with Microsoft Access as data storage. From the results of the research, the value of Energy Use Intensity (EUI or IKE) in Building Ins, Banten is 3.84 kWh / m2 / month or 46.02 kWh / m2 / year. It belongs to the very efficient category which is where to standardize office building that is 240 kWh / m2 / year. The average lighting condition of each room is still below the standard, which is below 240 lux, while the average AC temperature condition is 24.40C, in general has an efficient performance. The results of testing software applications are known to run well, with fast operation and can produce accurate data. Keywords: Energy Audit, EUI, Energy Efficiency, Software Energy Audit

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