scholarly journals Decision support for building renovation strategies

2011 ◽  
pp. 221-225
Author(s):  
Hang Yin
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Energy Costs ◽  
Energy Usage ◽  
Efficient Operation ◽  
Climate Targets ◽  
Low Energy Consumption ◽  
Decision Making Processes ◽  
Passive Houses ◽  
Modern Building

In Europe, buildings account for 40% of energy consumption and 36% of EU CO2 emissions. The energy usage of old structures built or rehabilitated before 1980 is as high as 300 kWh/m2/yr, which is greater than the figure for modern structures and passive houses. Obviously, old buildings are the major users of energy, as they use more than twice as much as the modern building. There are numerous published studies showing that energy savings of 40 to 74% can be achieved in commercial buildings through renovation. Implementing rational renovation, which results in efficient operation and maintenance and facilitates low energy consumption, creates a triple-win situation: it provides a much needed impetus to the European economy, it contributes to the achievements of energy and climate targets and it decreases energy costs for citizens, businesses and public bodies. Normally, the renovation of existing buildings usually involves decision-making processes. The challenge is that ...

Der energieflexible und effiziente Energiewertstrom/The efficient and flexible energy value stream

2015 ◽  
Vol 105 (05) ◽  
pp. 313-318
Author(s):  
F. Feder ◽  
K. Erlach ◽  
F. Hosak ◽  
H. Lepple
Keyword(s):  
Energy Consumption ◽  
Low Energy ◽  
Energy Usage ◽  
Energy Value ◽  
Value Stream ◽  
Building Technology ◽  
A Value ◽  
Energy Flows ◽  
Low Energy Consumption ◽  
And Control

Die wachsende Volatilität im deutschen Energiesektor bietet jenen Unternehmen zukünftig einen Wettbewerbsvorteil, die ihren Energieverbrauch kontinuierlich senken und flexibel anpassen können. Als Werkzeug dafür wurde die Energiewertstrom-Methode um weitere Energieflüsse aus der Gebäude- und Versorgungstechnik sowie um Aspekte der Energieflexibilität erweitert. Dies erlaubt die Gestaltung eines energiekostenoptimalen Wertstroms.   In the light of the increasing volatility in the German energy sector, companies that are able to constantly reduce and control their energy consumption will gain a competitive advantage. Therefore, the Energy Value Stream Method has been extended by adding further energy flows in building technology as well as aspects of flexible energy usage. This enables the design of a value stream that results in low energy consumption and costs.

scholarly journals Electric energy consumption of milking process on some Finnish dairy farms

2017 ◽  
Vol 26 (3) ◽  
Author(s):  
Mari Rajaniemi ◽  
Tapani Jokiniemi ◽  
Laura Alakukku ◽  
Jukka Ahokas
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Electric Energy ◽  
Cooling Water ◽  
Electricity Consumption ◽  
Dairy Farms ◽  
Energy Costs ◽  
Heating Systems ◽  
Electric Energy Consumption ◽  
Energy Saving Potential

The aim of this study was to examine the electric energy consumption of milking process on dairy farms and to evaluate the methods to improve the energy efficiency. The electricity consumption of the milking process was measured on three dairy farms in Southern Finland, and it varied between 37–62 Wh kg-1 milk.  The largest energy saving potential was identified in milk cooling and the heating of cleaning water. Even simple methods, such as placing the condenser of the refrigeration system outside, may reduce the energy consumption of milk cooling by 30%. Efficient milk pre-cooling can reduce the energy consumption of the whole milking process by more than 25%. Even larger energy savings are possible with a sophisticated milk cooling – water heating systems. It was concluded that there is a significant potential to reduce the energy consumption and energy costs of the milking process, and thus to improve the profitability and sustainability of the sector at the same time.

scholarly journals Energy Audit and Analysis of an Institutional Building under Subtropical Climate

2018 ◽  
Vol 8 (2) ◽  
pp. 845 ◽  
Author(s):  
Yazed Yasin Ghadi ◽  
Ali M. Baniyounes
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Environmental Parameters ◽  
Subtropical Climate ◽  
University Campus ◽  
Energy Usage ◽  
Climate Conditions ◽  
Heating And Cooling ◽  
And Performance ◽  
Heating And Cooling Load

<p>Evaluation and estimation of energy consumption are essential in order to classify the amount of energy used and the way it is utilized in building. Hence, the possibility of any energy savings potential and energy savings opportunities can be identified. The intention of this article is to study and evaluate energy usage pattern of the Central Queensland University campus’ buildings, Queensland, Australia. This article presents the field survey results from the audit of an office building and performance-related measurements of the indoor environmental parameters, for instance, indoor air temperature, humidity and energy consumption concerned to the indoor heating and cooling load. Monthly observed energy usage information was employed to investigate influence of the climate conditions on energy usage.</p>

scholarly journals A Comparative Study: Energy Performance Analysis of Conventional Office Buildings at Lucknow

2020 ◽  
Vol 20 (1) ◽  
pp. 24-34
Author(s):  
Farheen Bano ◽  
Vandana Sehgal
Keyword(s):  
Energy Consumption ◽  
Time Use ◽  
Energy Savings ◽  
Energy Performance ◽  
Building Envelope ◽  
Office Buildings ◽  
Energy Audit ◽  
Energy Usage ◽  
Factors Affecting ◽  
Using Data

In this study, the energy consumption of three government and three private office buildings in Lucknow was investigated, and the energy performance index (EPI) for each building was determined. The main purpose of this research was to assess the energy usage of the buildings and identify factors affecting the energy usage. An analysis was performed using data from an energy audit of government buildings, electricity bills of private office buildings, and an on-site visit to determine building envelope materials and its systems. The annual energy consumption of buildings has been evaluated through EPI. The EPI, measured in kilowatt hour per square meter per year, is annual energy consumption in kilowatt hours divided by the gross floor area of the building in square meters. In this study, the energy benchmark for day-time-use office buildings in composite climate specified by Energy Conservation Building Code (ECBC) has been compared with the energy consumption of the selected buildings. Consequently, it has been found that the average EPI of the selected buildings was close to the national energy benchmark indicated by ECBC. Moreover, factors causing inefficient energy consumption were determined, and solutions for consistent energy savings are suggested for buildings in composite climate.

scholarly journals Heterogenous Energy Consumption Behavior by Firm Size: Evidence from Korean Environmental Regulations

2019 ◽  
Vol 11 (11) ◽  
pp. 3226
Author(s):  
Jaeseok Lee ◽  
Jongmin Yu
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Ghg Emissions ◽  
Industrial Sector ◽  
Vector Model ◽  
Energy Costs ◽  
Energy Usage ◽  
Firm Level ◽  
Consumption Behavior ◽  
Level Data

We analyze the interdependencies between energy usage, energy costs, renewable energy shares, economic growth, and greenhouse gas (GHG) emissions in the Korean industrial sector by employing a time-series panel vector model. Although the topic itself about has been classic one, our research to investigate diverse dynamics between large and small-mid size businesses using micro-firm level data is the first study in literature. Since firms with different sizes are put in different policy circumstances, the aggregate-level data analysis could possibly disregard the effectiveness of environmental & renewable policies and underestimate the policy sensitivity of firms. Our findings demonstrate that the increase in energy consumption in larger firms has a greater impact on their energy costs and GHG emissions than for small and medium-sized enterprises (SMEs). Moreover, it has a significant effect on GDP. Also, the increase in renewable energy shares only has a significant influence on the energy consumption and GHG emission levels of large firms.

scholarly journals Discussion on the Intelligent Design of Ultra-Low Energy Consumption Passive Buildings

2019 ◽  
Vol 2 (2) ◽  
pp. 20
Author(s):  
Xin Tong ◽  
Xiaolin Yang ◽  
Xiao Ma
Keyword(s):  
Energy Consumption ◽  
Construction Projects ◽  
Architectural Design ◽  
Low Energy ◽  
Advanced Technology ◽  
Gradual Improvement ◽  
Building Technology ◽  
Low Energy Consumption ◽  
Intelligent Technology ◽  
Modern Building

With the continuous development of science and technology and the gradual improvement of modern building technology, people pay more and more attention to the introduction of advanced technology in architectural design, such as the application of intelligent technology. With the increasingly severe environmental situation, people are increasingly demanding the environmental performance and green performance of buildings. The establishment of ultra-low energy consumption passive buildings has become one of the key construction contents of construction projects. This paper mainly analyzes the design points and architectural forms of related buildings from the perspective of intelligent control.

scholarly journals The effect of architectural façade design on energy savings in the student dormitory

2014 ◽  
Vol 18 (3) ◽  
pp. 979-988 ◽  
Author(s):  
Petar Pejic ◽  
Dusan Petkovic ◽  
Sonja Krasic
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Natural Light ◽  
Energy Costs ◽  
Student Activities ◽  
Energy Consumption Analysis ◽  
Shading Devices ◽  
Major Factors ◽  
New Student ◽  
Work And Life

There are many reasons for adequate use of natural light inside students' dormitories. Intensity of light required for student activities and temperature inside the rooms are the major factors for an occupant's comfortable work and life. Design of building fa?ades has a significant impact both on the use of natural light and energy consumption. In this paper, a comparative analysis of student rooms with different orientations and different fa?ade designs was performed in order to investigate what type of refurbishment in the fa?ade is necessary. The goal of the refurbishment was generation of optimal thermal and lighting comfort for students' work with maximal energy saving for a new student dormitory in Nis, Serbia. An analysis of annual energy consumption of the newly designed student dormitory and proposed replacements on the exterior fa?ade was performed by using the software EnergyPlus. Based on the energy consumption analysis it could be concluded that significant energy savings would be possible by upgrading the shading devices across the width of the window. In other words, changing the fa?ade of the dorm could generally improve students' comfort, while the energy costs would be reduced.

Investigation of Thermal and Energy Performance of Green Roofs in Florida Climate

2017 ◽  
Author(s):  
Dhruv Sangal ◽  
Hamidreza Najafi
Keyword(s):  
Mathematical Model ◽  
Energy Consumption ◽  
Energy Savings ◽  
Green Roofs ◽  
Building Energy ◽  
The United States ◽  
Energy Performance ◽  
Environmental Benefits ◽  
Energy Usage ◽  
Heating Load

Buildings are responsible for approximately 40% of energy consumption in the United States. Utilizing efficient methods for reduction in energy consumption by buildings is of great importance. Green roofs have been known as an effective approach to reduce building energy usage (associated with cooling and heating load) as well as providing environmental benefits. In the present paper, a mathematical model is developed in MATLAB considering several aspects of green roofs. The model is validated using available data from previous experimental research studies. A simulation is conducted to assess the performance of green roofs in Melbourne, FL. The study includes calculation of the energy savings associated with using a green roof in summer months and winter months.

Architecture as a strategy for reduced energy consumption? An in-depth analysis of residential practices’ influence on the energy performance of passive houses

2014 ◽  
Vol 3 (3) ◽  
pp. 192-206 ◽  
Author(s):  
Solvår Wågø ◽  
Thomas Berker
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Energy Savings ◽  
Energy Performance ◽  
Content Type ◽  
Depth Analysis ◽  
New Energy ◽  
Passive Houses ◽  
The One ◽  
Actual Energy Consumption

Purpose – The purpose of this paper is to discuss how architectural solutions may influence residential practice and energy consumption. Design/methodology/approach – The paper is part of a larger study based on qualitative investigations of six energy-efficient housing projects in Norway. Here, the authors examine one of these projects, Løvåshagen in Bergen, the first Norwegian passive house flat building. Based on a combination of 14 interviews with household members and energy consumption data for all flats, the authors show how residential practices influence energy consumption. In the discussion and conclusion, the authors focus on the role of the architecture in these practices. Findings – On the one hand, Løvåshagen reflects a mainstreaming approach to sustainable building, attracting a wide array of different occupants. On the other hand, the specific add-ons that are intended to make the buildings energy efficient require new definitions of comfort and new skills to achieve the promised energy savings. This combination can explain why Løvåshagen, after four years of occupation, has a large variation in actual energy consumption. Practical implications – In designing new energy-efficient housing, greater attention should be paid to the level of end-user control and adaptability, the level of system complexity, and the need for adequate information. An alternative to the mainstreaming approach would be to actively use architecture to influence residential practices towards reduced energy consumption. Originality/value – The use of qualitative methods to analyse quantitative energy data is original and provides promising opportunities to understand the significance of residential practices regarding actual energy consumption.

scholarly journals STATE OF SEED PRODUCTION AND AGRO-ENERGY EFFICIENCY ASSESSMENT OF RED FESCUE SEED PRODUCTION

2020 ◽  
Vol 2020 (3) ◽  
pp. 25-39
Author(s):  
Vladimir Zolotarev
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Total Energy ◽  
Seed Production ◽  
Energy Savings ◽  
Optimal Time ◽  
Energy Costs ◽  
Total Energy Consumption ◽  
Red Fescue ◽  
Seed Crops

Red fescue (Festuca rubra L.) it is one of the most popular crops for creating lawns of various types and as a component of meadow and pasture poly-species mixtures of long-term use. The volume of domestic production of seeds of this crop is less than 2% of the total sales of seed material on the Russian market. The wide expansion of imported seeds of foreign-selected varieties to the domestic market sharply raises the question of the need to develop seed production of this crop in Russia. To do this, it is necessary to intensify breeding for the development of new varieties of red fescue, the development of zonal technologies for cultivating them for seeds. Analysis and generalization of research results shows that when using a set of optimal agricultural techniques, it is possible to consistently receive seed collections of more than 0.4 t/ha. This level of seed yield ensures high profitability of production and recoupment of energy costs. Assessment of the energy efficiency of technologies for cultivation of red fescue pasture-lawn ecotype shows that the total energy consumption per 1 ha of seed was 17.7 GJ, per 1 kg of seeds – 68.2 MJ. Due to the increase in yield by 44.4% and the use of energy-saving techniques, energy savings per 100 kg of seeds amounted to 25.6%. The energy assessment showed that as a result of harvesting seed crops by direct threshing in the optimal time frame, total energy costs decreased by 19%, and energy consumption for fuel – by 29%.

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