scholarly journals The analysing energy efficiency for sailing ships in optimal travel route planning. Case study: World voyage of the training ship "Mircea"

2021 ◽  
Vol XXIV (1) ◽  
pp. 211-224
Author(s):  
ATODIRESEI D.
Keyword(s):  
Energy Efficiency ◽  
Performance Indicator ◽  
Route Planning ◽  
Naval Academy ◽  
Major Goal ◽  
The World ◽  
Efficiency Performance ◽  
Operational Energy ◽  
Planning Objective

Reducing fuel consumption is a major goal in planning a ship's voyage. In addition to reducing the operational costs of the voyage, this planning objective influences the energy efficiency of the voyage. This study presents a method for identifying the operational energy efficiency in planning a voyage route to sailboats. In this regard, in the first part of the study was developed a method for determining the Energy Efficiency Performance Indicator (EEOI) of a voyage route for sailing ships. In the second part of the study, to validate the developed method, were analyzed two voyage routes, with imposed limitations, to identify the optimal voyage route around the world for the Training ship „Mircea”. The Training ship „Mircea” is a training ship for the students of the "Mircea cel Bătrân" Naval Academy. The analysis was performed for two navigation routes, namely from East to West and from West to East, departing/arriving from the port of Constanța. The results of the analysis indicate that the route from West to East is the optimal route for Mircea's voyage around the world from the perspective of the ship's energy efficiency.

scholarly journals Business model for integrating energy efficiency performance in manufacturing industries: railcar case study

Procedia CIRP ◽  
2019 ◽  
Vol 81 ◽  
pp. 1441-1446
Author(s):  
Gabisile Buyiswa Gamede ◽  
Khumbulani Mpofu ◽  
Olukorede Tijani Adenuga
Keyword(s):  
Energy Efficiency ◽  
Business Model ◽  
Manufacturing Industries ◽  
Efficiency Performance

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.

scholarly journals uhuMEBr: Energy Refurbishment of Existing Buildings in Subtropical Climates to Become Minimum Energy Buildings

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1204 ◽  
Author(s):  
Sergio Gómez Melgar ◽  
Miguel Ángel Martínez Bohórquez ◽  
José Manuel Andújar Márquez
Keyword(s):  
Energy Efficiency ◽  
Carbon Footprint ◽  
Minimum Energy ◽  
Weather Conditions ◽  
Building Energy ◽  
Maximum Energy ◽  
Building Energy Efficiency ◽  
Existing Buildings ◽  
The World

Today, most countries in the world have mandatory regulations, more or less strict, regarding energy efficiency in buildings. However, a large percentage of the buildings already built were constructed under lax or non-existing regulations in this regard. Therefore, many countries are facing the energy refurbishment of their existing buildings to reduce their carbon footprint. Depending on ambient weather conditions where a building settles, its operation with respect to the achievement of maximum energy efficiency should usually be different. This happens in subtropical climates when, during the year and depending on the season, the building needs to conserve heat, evacuate it or even make an exchange with the outside to take advantage of favorable environmental conditions. This paper presents a complete methodology for conducting building energy efficiency refurbishments in subtropical climates in order to convert them into minimum energy buildings. The proposed methodology is illustrated by a case study in a dwelling that includes all the stages, from the analysis of the existing dwelling to the refurbishment works, showing the final results and the subsequent dwelling operation.

Achieving energy efficiency and aesthetics through windows in the Tropics

2018 ◽  
Vol 1 (1) ◽  
pp. 29-35
Author(s):  
Kwabena Abrokwa Gyimah
Keyword(s):  
Climate Change ◽  
Energy Efficiency ◽  
Comparative Analysis ◽  
Major Contributor ◽  
Construction Process ◽  
The World ◽  
Materials Used ◽  
The Tropics ◽  
Window Pane

The world today is faced with climate change issues and due to the activities man has been involved in over the years. Worldleaders have become very concerned with this and lot of measures are been laid down to mitigate this. The built environmentis a major contributor since its construction process, materials used and even the daily operation uses a lot energy which is amajor concern. Architects are therefore challenged with creating a balance between their traditional aesthetics of buildingsand energy efficiency. This research therefore seeks to find out how this balance can be achieved in the tropics through theuse of different window pane properties. The study therefore sought to identify developments of windows with regards to theirpane properties to see how both aesthetics and energy efficiency can be achieved. Literature was reviewed to find out thecurrent situation and then a case study building analysed for results. The case study buildings were then modified to see theeffect of each modification. Comparative analysis was done with the original buildings and the modified buildings and it wasfound that reflection was a key to achieve both aesthetics and energy efficiency. Other factors had impact and influence onthe aesthetics and energy efficiency but reflection stood out of the lot.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

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