SHIP DATA DRIVEN PROPULSION MODELS & WIND-BASED PROPULSION TECHNOLOGY

2019 ◽  
Author(s):  
J. E. Buckingham ◽  
D. R. Pearson ◽  
E Storey
Keyword(s):  
Economic Analysis ◽  
Energy Saving ◽  
Business Case ◽  
Data Driven ◽  
First Principle ◽  
Baseline Model ◽  
Ship Model ◽  
Fuel Savings ◽  
Monetary Savings ◽  
Ship Performance

This paper presents the approach taken to develop and align a parametric ship model to metocean data and known ship performance data measured at sea, and the use of this aligned baseline model in conjunction with first principle models of wind-based Energy Saving Technologies (EST) to derive the benefit of such technologies over specific voyages. The EST compared in this paper are: • Flettner rotors • Wingsails • Turbosails A specific voyage conditions are studied for a given ship in order to provide a broad and representative range of seagoing conditions for the vessel, with the model then being used to derive the relative fuel savings from the EST. This output can then be run-through a techno-economic analysis to derive the monetary savings and inform a potential business case for installation of such EST. The vessel presented in this paper is a 61,000 dwt bulker, which has served as a demonstrator vessel in previous BMT publications and is a well understood baseline for comparison.

The Energy-Saving Diagnosis of PWR Nuclear Power Station Based on the Thermo-Economic Analysis Model

2010 ◽  
Author(s):  
Juan Chen ◽  
Tao Zhou ◽  
Ke Ran
Keyword(s):  
Graph Theory ◽  
Economic Analysis ◽  
Energy Saving ◽  
Nuclear Power Station ◽  
Nuclear Power ◽  
Exergy Analysis ◽  
Performance Estimation ◽  
Structure Theory ◽  
Analysis Model ◽  
Power Station

Exergy analysis model of PWR nuclear power station is developed in which signal flowing graph theory is introduced to set up the relation equations between input exergy flow and output exergy flow. Then, combining with resource distribution between different components, thermo-economic analysis model is obtained by setting up unit thermo-economic cost equations of different components with productive structure graph. Taking Daya Bay as an example, exergy analysis and thermal-economic analysis are put forward with detailed distribution of exergy and investment cost. Finally, aimed at energy-saving, static diagnosis is performed in two levels: energy conservation and cost reduction, and on this basis dynamic diagnosis is developed through sensitivity analysis considering different influence factors such as main steam temperature, fuel price, construction capital investment, post treatment cost and so on. The introduction of signal flow graph theory and thermal-economic structure theory is helpful to do performance estimation with high speed and good accuracy. It provides a new way for rapid optimization and offers an effective theoretical method for energy-saving of PWR nuclear power station including advanced reactor such as AP1000.

scholarly journals Thermo-economic analysis of an efficient lignite-fired power system integrated with flue gas fan mill pre-drying

2018 ◽  
Author(s):  
Junjie Yan ◽  
Xiaoqu Han ◽  
Jiahuan Wang ◽  
Ming Liu ◽  
Sotirios Karellas
Keyword(s):  
Moisture Content ◽  
Economic Analysis ◽  
Power System ◽  
Energy Saving ◽  
Flue Gas ◽  
Power Plants ◽  
Waste Heat ◽  
Low Rank ◽  
Analysis Model ◽  
Energy Saving Potential

Lignite is a domestic strategic reserve of low rank coals in many countries for its abundant resource and competitive price. Combustion for power generation is still an important approach to its utilization. However, the high moisture content always results in low efficiencies of lignite-direct-fired power plants. Lignite pre-drying is thus proposed as an effective method to improve the energy efficiency. The present work focuses on the flue gas pre-dried lignite-fired power system (FPLPS), which is integrated with fan mill pulverizing system and waste heat recovery. The thermo-economic analysis model was developed to predict its energy saving potential at design conditions. The pre-drying upgrade factor was defined to express the coupling of pre-drying system with boiler system and the efficiency improvement effect. The energy saving potential of the FPLPS, when applied in a 600 MW supercritical power unit, was determined to be 1.48 %-pts. It was concluded that the improvement of boiler efficiency mainly resulted from the lowered boiler exhaust temperature after firing pre-dried low moisture content lignite and the lowered dryer exhaust gas temperature after pre-heating the boiler air supply. Keywords: lignite; pre-drying; thermodynamic analysis; thermo-economics

An Economic Analysis on Regeneration Concrete Hollow Block

2012 ◽  
Vol 204-208 ◽  
pp. 3186-3189
Author(s):  
Song Gu ◽  
Chao Wang ◽  
Lu Li ◽  
Yu Ping Gan ◽  
Kai Lin
Keyword(s):  
Economic Analysis ◽  
Energy Saving ◽  
High Efficiency ◽  
Building Energy ◽  
Economic Benefits ◽  
Wall Material ◽  
Green Wall ◽  
Waste Concrete ◽  
Hollow Block ◽  
Building Energy Saving

With the development of wall innovation, the appearance of regeneration concrete hollow block has an important operation significance for building energy saving and high efficiency recycling of waste concrete. The paper introduces a new green wall material—regeneration concrete hollow block and analyzes the feasibility of its application from the point of macroscopic and technical economy. The paper forecasts the direct and indirect economic benefits after its application in order to promote the extension of regeneration concrete hollow block.

An investigation into effects of Gate Rudder® system on ship performance as a novel energy-saving and manoeuvring device

2020 ◽  
Vol 218 ◽  
pp. 108250
Author(s):  
Zeynep Tacar ◽  
Noriyuki Sasaki ◽  
Mehmet Atlar ◽  
Emin Korkut
Keyword(s):  
Energy Saving ◽  
Ship Performance

Economic Analysis of Energy Saving Practices in Irrigation

1983 ◽  
Vol 26 (6) ◽  
pp. 1784-1792 ◽  
Author(s):  
James R. Gilley ◽  
Raymond J. Supalla
Keyword(s):  
Economic Analysis ◽  
Energy Saving

Energy saving technique for cooling dominated academic building: Techno-economic analysis of its application

2014 ◽  
Vol 132 ◽  
pp. 192-199 ◽  
Author(s):  
Syed Ihtsham ul Haq Gilani ◽  
Mohd Shiraz Aris ◽  
Petrus Tri Bhaskoro
Keyword(s):  
Economic Analysis ◽  
Energy Saving ◽  
Energy Saving Technique ◽  
Academic Building

A daily baseline model based on transfer functions for the verification of energy saving. A case study of the administration room at the Palacio de la Madraza, Granada

2018 ◽  
Vol 224 ◽  
pp. 538-549 ◽  
Author(s):  
Julián Arco Díaz ◽  
José Sánchez Ramos ◽  
M. Carmen Guerrero Delgado ◽  
David Hidalgo García ◽  
Francisco Gil Montoya ◽  
...  
Keyword(s):  
Energy Saving ◽  
Transfer Functions ◽  
Baseline Model ◽  
Model Based
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