Model and simulation of operational energy efficiency for inland river ships

2014 ◽  
pp. 75-80
Keyword(s):  
Energy Efficiency ◽  
Inland River ◽  
Model And Simulation ◽  
Operational Energy

Multiparameter Sensitivity Analysis of Operational Energy Efficiency for Inland River Ships Based on Backpropagation Neural Network Method

2015 ◽  
Vol 49 (1) ◽  
pp. 148-153 ◽  
Author(s):  
Xinping Yan ◽  
Xing Sun ◽  
Qizhi Yin
Keyword(s):  
Neural Network ◽  
Sensitivity Analysis ◽  
Energy Efficiency ◽  
Variable Parameter ◽  
Energy Efficiency Improvement ◽  
Inland River ◽  
Network Method ◽  
Sensitivity Analysis Method ◽  
Operational Energy ◽  
Set Up

AbstractWith the introduction of energy efficiency operational indicator (EEOI) to inland river ships, a multiparameter sensitivity analysis method was proposed to analyze the parameters affecting the operational energy efficiency of inland river ships. On the basis of experimental data, a model based on a backpropagation artificial neural network (BP-ANN) for predicting the EEOI was set up. The accuracy of this predictive model was verified. On the basis of weights and threshold values of each variable parameter gained in the trained BP-ANN, a Garson algorithm was used for calculating the parameter sensitivity factors. Results showed that, besides the engine speed, the environment conditions would also play a big part in the operational energy efficiency of inland river ships. The conclusion provides a foundation for engaging the energy efficiency improvement strategies for inland river ships.

scholarly journals Integrated economic and environmental building classification and optimal seismic vulnerability/energy efficiency retrofitting

2021 ◽  
Author(s):  
Martina Caruso ◽  
Rui Pinho ◽  
Federica Bianchi ◽  
Francesco Cavalieri ◽  
Maria Teresa Lemmo
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Seismic Hazard ◽  
Environmental Impacts ◽  
Classification System ◽  
Seismic Vulnerability ◽  
Performance Metrics ◽  
Climatic Conditions ◽  
Economic Losses ◽  
Operational Energy

AbstractA life cycle framework for a new integrated classification system for buildings and the identification of renovation strategies that lead to an optimal balance between reduction of seismic vulnerability and increase of energy efficiency, considering both economic losses and environmental impacts, is discussed through a parametric application to an exemplificative case-study building. Such framework accounts for the economic and environmental contributions of initial construction, operational energy consumption, earthquake-induced damage repair activities, retrofitting interventions, and demolition. One-off and annual monetary expenses and environmental impacts through the building life cycle are suggested as meaningful performance metrics to develop an integrated classification system for buildings and to identify the optimal renovation strategy leading to a combined reduction of economic and environmental impacts, depending on the climatic conditions and the seismic hazard at the site of interest. The illustrative application of the framework to an existing school building is then carried out, investigating alternative retrofitting solutions, including either sole structural retrofitting options or sole energy refurbishments, as well as integrated strategies that target both objectives, with a view to demonstrate its practicality and to explore its ensuing results. The influence of seismic hazard and climatic conditions is quantitatively investigated, by assuming the building to be located into different geographic locations.

Net zero carbon: Energy performance targets for offices

2021 ◽  
Vol 42 (3) ◽  
pp. 349-369
Author(s):  
Robert Cohen ◽  
Karl Desai ◽  
Jennifer Elias ◽  
Richard Twinn
Keyword(s):  
Energy Efficiency ◽  
Minimum Energy ◽  
Energy Performance ◽  
Consultation Process ◽  
Net Zero ◽  
Extensive Consultation ◽  
Operational Energy ◽  
Legislative Framework ◽  
Zero Carbon ◽  
The Uk

The UKGBC Net Zero Carbon Buildings Framework was published in April 2019 following an industry task group and extensive consultation process. The framework acts as guidance for achieving net zero carbon for operational energy and construction emissions, with a whole life carbon approach to be developed in the future. In consultation with industry, further detail and stricter requirements are being developed over time. In October 2019, proposals were set out for industry consultation on minimum energy efficiency targets for new and existing commercial office buildings seeking to achieve net zero carbon status for operational energy today, based on the performance levels that all buildings will be required to achieve by 2050. This was complemented by modelling work undertaken by the LETI network looking into net zero carbon requirements for new buildings. In January 2020 UKGBC published its guidance on the levels of energy performance that offices should target to achieve net zero and a trajectory for getting there by 2035. This paper describes the methodology behind and industry perspectives on UKGBC’s proposals which aim to predict the reduction in building energy intensity required if the UK’s economy is to be fully-powered by zero carbon energy in 2050. Practical application: Many developers and investors seeking to procure new commercial offices or undertake major refurbishments of existing offices are engaging with the ‘net zero carbon’ agenda, now intrinsic to the legislative framework for economic activity in the UK. A UKGBC initiative effectively filled a vacuum by defining a set of requirements including energy efficiency thresholds for commercial offices in the UK to be considered ‘net zero carbon’. This paper provides all stakeholders with a detailed justification for the level of these thresholds and what might be done to achieve them. A worked example details one possible solution for a new office.

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.

Design of Collision-Proof Equipments for Non-Navigable Hole of Inland River Bridge

2011 ◽  
Vol 255-260 ◽  
pp. 1740-1744
Author(s):  
Guo Bin Liu ◽  
Mu Xi Lei ◽  
Zheng Bao Lei ◽  
Chen Chen Chen ◽  
Bi Feng Ou
Keyword(s):  
Science And Technology ◽  
Simulation Software ◽  
Optimal Scheme ◽  
Inland River ◽  
Model And Simulation ◽  
Actual Environment ◽  
Guiding Function ◽  
Xiang River ◽  
Collision Force

This paper is based on the two model demonstrative project of science and technology of Changsha-Xiangtan highway which are non-navigable piers, which belong to a new extra large bridge in Xiang River. We designed Collision-proof equipment for the piers to prevent the collision between the bridge and ship. Considering the crash conditions of the local actual environment, the design could withstand the collision force created by a Ship loaded with 2000 tons, and plays a certain guiding function, so as to ensure the safety of the bridge. This paper had designed a variety of programs through UG,VPG/LS-DYNA model and simulation software, through comparing, eventually determined the optimal scheme.

scholarly journals An application of fuzzy-AHP to ship operational energy efficiency measures

2016 ◽  
Vol 121 ◽  
pp. 392-402 ◽  
Author(s):  
E. Bal Beşikçi ◽  
T. Kececi ◽  
O. Arslan ◽  
O. Turan
Keyword(s):  
Energy Efficiency ◽  
Fuzzy Ahp ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Operational Energy

scholarly journals The adaptable energy platform

2019 ◽  
Author(s):  
Eur Ing A J Blokland ◽  
I P Barendregt ◽  
C J C M Posthumus
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
New Technologies ◽  
Energy Levels ◽  
Life Time ◽  
Energy Resources ◽  
Design Parameters ◽  
Green Technologies ◽  
Operational Energy

The Netherlands Ministry of Defence (MoD) has issued an Operational Energy Strategy (OES) with ambition targets for energy independence and improvement of energy efficiency during the life time of naval platforms. A target is given in 2030 of 20 % reduced dependence on fossil fuels and in 2050 of 70 % reduced dependence on fossil fuels, compared to 2010. More stringent environmental emission (NOx, CO2, etc.) requirements are to be expected as a result from IMO and (local) political regulations. In the last decades the power consumption on board of naval platforms increased substantially as well as the complexity of integrated energy systems. Market surveys shows that the evolution of commercial green technologies are promising but have to be demonstrated in the coming years on low power and energy levels. They will not be de-risked in depth or well proven to be successful in time to be selected for the Royal Netherlands Navy (RNLN) new naval projects (2019 – 2025). Furthermore, new technologies as energy resources and carriers (H2, LNG, methanol, power-to-liquid (PTL), etc.) or new system technologies (DC on high voltage level, fuel cell systems, waste energy recovery, etc.) require a new approach for integration aspects like hazard and safety cases and energy efficiency. This is because the energy demand on board of naval platforms in several military operational modes differ from the merchant and off-shore branch. In this paper an approach for an adaptable energy platform is described to design a new naval platform based on nowadays proven technology as fossil fuels that can be transformed during life time that can fulfill the expectations and requirements of the coming decades (non-fossil fuels, zero emission, improved energy efficiency). Aspects as a naval energy index as reference will be discussed as well as an evaluation of new technologies for new naval platform integration design parameters, such as power or energy demands, consequences of energy resources, energy control as well as build in ship construction safety measures.

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