Comparison of Energy-Saving Driving Style Strategies

2016 ◽  
Author(s):  
Yigit Fidansoy ◽  
Sohejl Wanjani ◽  
Sebastian Schmidt
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Fossil Fuels ◽  
Design Thinking ◽  
Energy Savings ◽  
Driving Style ◽  
Advisory Systems ◽  
Train Dynamics ◽  
Input Variables ◽  
And Training

Due to the increasing scarcity of fossil fuels and the climate change, the importance of energy efficiency is increasing. This importance is major especially in areas where the energy consumption is high. Rail transport depicts such an area. The highest proportion of energy consumed in the railway is the so called traction energy. This energy is required for the train run. In the timetable, allowances leave a margin for the driving style of train run. By the selective use of strategies that change the driving style, it is possible to exploit these allowances and reduce the traction energy consumption. The first objective of this study deals with the development of algorithms for energy-saving driving style. First, the necessary input variables of the algorithms based on the literature research and the formulas of train dynamics were determined. Then the algorithms were developed to create different energy-saving driving styles, resulting choose the best result which should be shown as a driving recommendation. The developed algorithms were used in an application example in order to calculate the potential of energy-savings. The example should represent the influence of the input variables for a comparison of different situations. At last the acceptance of the determined driving strategies in practice was investigated. By implementing the design thinking method it was identified that driver advisory systems and training programs are necessary to facilitate energy-saving driving in practice.

Study on movable light-shelf system with location-awareness technology for lighting energy saving

2016 ◽  
Vol 26 (6) ◽  
pp. 796-812 ◽  
Author(s):  
Heangwoo Lee ◽  
Sang-hoon Gim ◽  
Janghoo Seo ◽  
Yongseong Kim
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Savings ◽  
Full Scale ◽  
Location Awareness ◽  
Energy Saving Potential ◽  
Recent Increase ◽  
Lighting Energy ◽  
External Conditions ◽  
Incoming Light

Various ongoing studies regard light-shelves as one solution to the recent increase in lighting energy consumption. However, in previous light-shelf systems, the direction of incoming light was determined by external conditions, thereby limiting the efficiency of lighting energy saving. The purpose of the present study was to develop a movable light-shelf system with location-awareness technology and verify its performance. In this study, a full-scale testbed was established in order to test the proposed movable light-shelf system with location awareness as well as to verify its energy saving potential. The results were analysed and compared with the performances of previous fixed (Case 1) and movable (Case 2) light-shelf systems without location-awareness technology. The obtained results were as follows. (1) The proposed light-shelf system can respond to external conditions and to the location of the occupant by means of the control axis of the light-shelf module angle through modulation between the control axis of the angle of the previous light-shelf and the reflector of the light-shelf. (2) The proposed light-shelf system provides 90.0% and 86.6%/91.0% energy savings in comparison to Case 1 and Case 2, respectively.

Analysis for Energy Savings Potential and Economics of Combined Air-Conditioning System with Temperature and Humidity Decoupled Treatment

2011 ◽  
Vol 280 ◽  
pp. 71-75
Author(s):  
Zhong Chao Zhao ◽  
Dong Hui Zhang ◽  
Yu Ping Chen
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Air Conditioning ◽  
Energy Savings ◽  
Operating Cost ◽  
Air Conditioning System ◽  
Operation Mechanism ◽  
Energy Saving Potential ◽  
Temperature And Humidity

In this paper, the operation mechanism of combined air-conditioning system with temperature and humidity decoupled treatment (CACSTHDT) was presented, and the energy saving potential and economics of CACSTHDT were primarily analyzed through compared with a traditional air-conditioning system. The results indicated that CACSTHDT could save up to 28.64% energy consumption in comparison with a traditional air-conditioning system. The operating cost in one summer only was 71.36% of that cost of traditional air-conditioning system.

Energy-Oriented Maintenance Decision-Making for Sustainable Manufacturing Based on Energy Saving Window

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Tangbin Xia ◽  
Lifeng Xi ◽  
Shichang Du ◽  
Lei Xiao ◽  
Ershun Pan
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Savings ◽  
Sustainable Manufacturing ◽  
Green Manufacturing ◽  
Energy Reduction ◽  
Efficient Manner ◽  
Line Energy ◽  
Industrial Enterprises ◽  
Attribute Model

In recent years, the industry's responsibility to join in sustainable manufacturing becomes huge, while innovating sustainability has been a new trend. Industrial enterprises are pursuing energy reduction to meet future needs for sustainable globalization and government legislations for green manufacturing. To run a manufacturing line in an energy-efficient manner, an energy-oriented maintenance methodology is developed. At the machine layer, the multi-attribute model (MAM) method is extended by modeling the energy attribute. Preventive maintenance (PM) intervals of each machine are dynamically scheduled according to the machine deterioration, maintenance effects, and environmental conditions. At the system layer, a novel energy saving window (ESW) policy is proposed to reduce energy for the whole line. Energy consumption interactivities, batch production characteristics, and system-layer maintenance opportunities are comprehensively considered. Real-time choice of PM adjustments is scheduled by comparing the energy savings of advanced PM and delayed PM. The results prove the energy reduction achieved by this MAM-ESW methodology. It effectively utilizes standby power, reduces energy consumption, avoids manufacturing breakdown, and decreases scheduling complexity. Furthermore, this energy-oriented maintenance framework can be applied not only in the automotive industry but also for a broader range of manufacturing domains such as the aerospace, semiconductor, and chemical industries.

The potential of simplified concepts for daylight harvesting

2005 ◽  
Vol 37 (1) ◽  
pp. 21-38 ◽  
Author(s):  
RP Leslie ◽  
R Raghavan ◽  
O Howlett ◽  
C Eaton
Keyword(s):  
New York ◽  
Energy Consumption ◽  
Potential Energy ◽  
Energy Saving ◽  
Solar Irradiance ◽  
Energy Savings ◽  
Climatic Regions ◽  
Switching Behaviour ◽  
Open Plan ◽  
Daylight Harvesting

Daylighting systems offer tremendous potential for reducing the energy consumption of electric lighting, but their usage has been inhibited by high costs and imperfect performance of current technologies. This paper presents predictions of energy savings for two proposed daylighting technologies, a daylight-sensing switch and an automatic blinds system, which employ simple, inexpensive components and designs. Assumptions of solar irradiance, blind position, blind operation behaviour, and light switching behaviour were combined with illuminance data and daylight factors to develop an algorithm for calculating the potential energy usages of six different systems in commercial private offices and open plan offices. Results show that the combined usage of the proposed technologies perform with an average annual energy saving of 24% compared with manual switching and blinds operation in Albany, New York. Compared with a photosensor-operated dimming system, the proposed technologies combined show better performance during summer months. Comparisons were also made for the systems in six US climatic regions.

scholarly journals The impact of building envelope retrofit measures on postwar MURBS in Toronto

2021 ◽  
Author(s):  
Sara Damyar
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Use ◽  
Energy Savings ◽  
Building Envelope ◽  
Simulation Software ◽  
Energy Simulation ◽  
Reduce Energy Consumption ◽  
The Impact ◽  
Current Standards

Building envelope retrofits is one of the options available to reduce energy consumption of postwar MURBs in Toronto. This study evaluates the impact of building envelope retrofits that meet current standards on energy consumption of a Toronto postwar MURB; utilizing eQUEST energy simulation software. Further upgrades also take place to evaluate how the impact of building envelope retrofits on energy use can be increased and optimized for all assemblies of building envelope and airtightness. Moreover, the retrofit strategies are ranked based on cost and energy-saving effectiveness. The results of the analysis reveal that building envelope retrofit based on OBC-2012 standards can reduce the energy consumption by up to 44%. Furthermore, the optimal RSI values of all building envelope components were found to be equal or less than code requirements which outcomes significant energy savings. Lastly, the ranking of the strategies helps to identify the best option according to the priorities of a project.

Theoretical Solutions for Key Technological Issues on Energy Savings Measurement and Verification

2013 ◽  
Vol 448-453 ◽  
pp. 4394-4398
Author(s):  
Jian Wei Tian ◽  
Hai Hong Chen ◽  
Zhi Zhong Li
Keyword(s):  
Energy Consumption ◽  
Uncertainty Analysis ◽  
Performance Measurement ◽  
Energy Saving ◽  
Energy Savings ◽  
Model Development ◽  
Heating System ◽  
National Standard ◽  
Baseline Model ◽  
Measurement And Verification

Two key technological issues i.e. significant energy consumption factors identification and baseline model development, energy savings uncertainty analysis are analyzed based on international performance measurement & verification protocol (IPMVP) and national standard GB/T 28750. Besides, two theoretical solutions are proposed correspondingly. Finally, energy savings calculation on an energy-saving retrofit project of a building heating system verifies the validity of the theoretical solutions proposed.

scholarly journals The Influence of Insulation Styles on the Building Energy Consumption and Indoor Thermal Comfort of Multi-Family Residences

2019 ◽  
Vol 11 (1) ◽  
pp. 266 ◽  
Author(s):  
Yupeng Wang ◽  
Hiroatsu Fukuda
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Energy Saving ◽  
Energy Savings ◽  
Weather Conditions ◽  
Building Energy ◽  
High Heat ◽  
Building Energy Consumption ◽  
Indoor Thermal Comfort ◽  
Residential Energy Efficiency

The properties of building envelopes significantly affect indoor building energy consumption, indoor thermal comfort, and building durability. In the current standards for Japanese residential energy efficiency, insulation placement is not well regulated. Meanwhile, it is common in Japan to use air-conditioning intermittently, rather than having the units operate continuously. Therefore, considering specific Japanese lifestyles, we investigated insulation performance. In this research, we: (1) developed the interior insulation to include insulation on walls, ceilings and floors of building units (all of the interior surfaces) to achieve building energy savings by avoiding heat loss through thermal bridges; (2) discussed and demonstrated the effects of high heat capacitance for each of the building components and the thermal bridge by conducting building environmental simulations; (3) conducted simulations in seven cities in Japan and discussed the applicability of these different weather conditions; and (4) compared temperature distributions to investigate differences in indoor comfort with partial heating on winter nights. We demonstrated the energy saving and thermal comfort advantages of interior insulation. This research provides an innovative insulation style based on Japanese lifestyles that contributes to new energy-saving standards and formulations.

Modelling energy consumption behaviour using “energy culture” concept for student accommodations in Malaysian public universities

Facilities ◽  
2017 ◽  
Vol 35 (11/12) ◽  
pp. 658-683 ◽  
Author(s):  
Mohd Hafizal Ishak
Keyword(s):  
Energy Consumption ◽  
Potential Energy ◽  
Energy Saving ◽  
Public Universities ◽  
Energy Savings ◽  
Environmental Concern ◽  
Content Type ◽  
Consumption Behaviour ◽  
Potential Energy Saving ◽  
To Come

Purpose In working towards a sustainable campus of public universities, energy consumption behaviour assessment is one of the several issues that requires attention by the facilities manager. Information on energy consumption behaviour is needed to determine potential energy savings. The purpose of this study is to assess energy consumption behaviour for student accommodations in Malaysian public universities. Design/methodology/approach This study focuses on developing energy consumption behaviour models (ECBMs) and assesses the potential energy savings. The “energy culture” framework consolidated with multiple regression analysis is used to strengthen the development of ECBMs. A self-administrated survey involving 1,009 respondents in selected public universities was carried out. Findings The result shows that five factors from the energy culture framework contribute to energy consumption behaviour, namely, building regulation, environmental concern, education, social marketing and direct factors (device and activities). These factors are included in the model for predicting energy consumption levels. The results show that there is a 78 per cent difference in energy consumption between the observed and predicted data. Practical implications This study indicates a high potential energy saving among students of Malaysian public universities. Originality/value The model was tested against the overall students among Malaysian public universities. In future, the model can be tested within hostel accommodations. The present assessment revealed the potential energy saving among the hostel buildings and sets the target regarding which building has a potential to reduce energy. It also helps the facilities managers to come up with strategies for programmes and energy policy in public universities.

scholarly journals Assessing the Impacts of Electricity Utilization in Educational Faculties: A Thailand Case Study

2018 ◽  
Vol 1 (1) ◽  
pp. 6
Author(s):  
Dalia M. M. Yacout ◽  
Pramote Sirirote ◽  
M. M. Yacout ◽  
Dusanee Thanaboripat
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Environmental Impacts ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Energy Analysis ◽  
Co2 Reduction ◽  
Energy Utilization ◽  
Educational Facilities ◽  
Up Scaling

In view of the up-scaling energy crises worldwide, efforts have been focusing on reducing energy consumption and replacing fossil fuels usage with renewable energy sources. Thailand is one of the developing countries that have been facing an increase in energy demand associated to its economic expansion. The development in the educational sector is one of the sectors causing an increasing energy demand.Purpose: This study aims to quantify energy usage and understand its environmental impacts in one of the educational facilities in Thailand in order to identify energy saving opportunities and improvement options related to energy consumption in this sector. Materials and Methods: The investigation included a historical energy analysis for energy utilization of the facility, an onsite energy audit and an environmental impacts assessment. A number of potential energy saving opportunities was identified; related cost savings and CO2 reduction were calculated. Additionally, the environmental impacts of energy utilization were simulated using the life cycle assessment technique. Special attention was given to potential impacts on global warming due to its direct association to fossil fuels combustion.Results and discussion: the pattern of energy utilization was identified and it clarified that the major contributor to energy utilization was energy consumption practices by students and staff of the faculty. Consequently, awareness raising of energy saving opportunities and people involvement was the major area of improvement. Results show that increasing people involvement in energy saving practices could lead to a cost saving of 46,000-120,000 USD/Year with low cost investment and a 100-240 ton CO2 reduction. Other potential savings were using motion sensors which save 30-40% of energy costs in offices and utilizing renewable solar energy as a source for electricity. This will save 13,300-33,300 USD/Year with a 7.5 years payback and 35-50 years lifetime.When assessing the associated environmental impacts to electricity production, five main categories were found to be impacted: fossil fuels depletion, respiratory inorganics formation potential, global worming potential, acidification potential and eutrophication potential. The application of the suggested energy saving opportunities will reduce the electricity consumption, lower generated air emissions from fossil fuels combustion, consequently minimize all associated impacts specially global worming potential.In Conclusion: assessing energy utilization of educational facilities is essential to reduce energy demand in an up-scaling economy. Energy analysis and onsite energy audits are efficient methods for recognizing energy utilization patterns and identifying energy saving opportunities. The implemented investigation in this study can be applied in different educational facilities. 

scholarly journals The impact of building envelope retrofit measures on postwar MURBS in Toronto

2021 ◽  
Author(s):  
Sara Damyar
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Use ◽  
Energy Savings ◽  
Building Envelope ◽  
Simulation Software ◽  
Energy Simulation ◽  
Reduce Energy Consumption ◽  
The Impact ◽  
Current Standards

Building envelope retrofits is one of the options available to reduce energy consumption of postwar MURBs in Toronto. This study evaluates the impact of building envelope retrofits that meet current standards on energy consumption of a Toronto postwar MURB; utilizing eQUEST energy simulation software. Further upgrades also take place to evaluate how the impact of building envelope retrofits on energy use can be increased and optimized for all assemblies of building envelope and airtightness. Moreover, the retrofit strategies are ranked based on cost and energy-saving effectiveness. The results of the analysis reveal that building envelope retrofit based on OBC-2012 standards can reduce the energy consumption by up to 44%. Furthermore, the optimal RSI values of all building envelope components were found to be equal or less than code requirements which outcomes significant energy savings. Lastly, the ranking of the strategies helps to identify the best option according to the priorities of a project.

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