scholarly journals REVIEW OF ORGANIC RANKINE CYCLE HEAT RECOVERY TECHNOLOGIES APPLICATION FOR MARINE DIESEL ENGINES

2020 ◽  
Author(s):  
Tomas Čepaitis ◽  
Sergejus Lebedevas
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Co2 Emissions ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Short Review ◽  
International Maritime Organization ◽  
Maritime Transport ◽  
International Shipping ◽  
Energy Efficiency Design Index

CO2 emissions from international shipping could increase between 50-250% by 2050 year. The EEDI (Energy Efficiency Design Index) is a key requirement for regulating CO2 emissions of maritime transport; a requirement was introduced in 2011 by the International Maritime Organization and came into force gradually. In recent studies it was investigated that no other technologies has the potential and reserves compared to Cogeneration systems. The article provides a short review of ship energy efficiency design index improving technologies and cogeneration systems application for maritime transport. A brief comparative analysis of cogeneration cycles is provided also. CO2 emissions from international shipping could increase between 50–250% by 2050 year. The EEDI (Energy Efficiency Design Index) is a key requirement for regulating CO2 emissions of maritime transport; a requirement was introduced in 2011 by the International Maritime Organization and came into force gradually. In recent studies it was investigated that no other technologies have the potential and reserves compared to Cogeneration systems. The article provides a short review of ship energy efficiency design index improving technologies and cogeneration systems application for maritime transport which have direct relation with CO2 emissions. A brief comparative analysis of cogeneration cycles is provided also.

scholarly journals New opportunities for seafarers owing to reduction emission and arising the number of Dual fuel vessels

2021 ◽  
Vol 915 (1) ◽  
pp. 012029
Author(s):  
I Surinov ◽  
V Shemonayev
Keyword(s):  
Energy Efficiency ◽  
Greenhouse Gases ◽  
Co2 Emissions ◽  
International Maritime Organization ◽  
Carbon Intensity ◽  
Dual Fuel ◽  
International Shipping ◽  
The World ◽  
Main Strategy

Abstract Nowadays one of the main goal of International Maritime Organization (IMO) is to reduce pollution by vessels over the world. Due to this they implemented in MARPOL Annex VI the requirements for any gas vessel’s emissions which are setting the limits and timelines of compliance. To overcome this problem IMO adopted on 15th July 2011 the commence measures for improving vessel’s energy efficiency plan and reducing emissions of greenhouse gases (GHG). The main strategy of GHG envisages the reduction of international shipping in carbon intensity (reducing CO2 emissions from transport activities on average for international shipping from 40% to 70% by 2050). According to this, growing the problem concerning new opportunities for seafarers. That was managed on example by crewing company Nordic Hamburg at implementation the new trainings.

scholarly journals Concentrating Solar Collectors for a Trigeneration System—A Comparative Study

2020 ◽  
Vol 10 (13) ◽  
pp. 4492
Author(s):  
Evangelos Bellos ◽  
Christos Tzivanidis
Keyword(s):  
Energy Efficiency ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Payback Period ◽  
Weather Data ◽  
Parabolic Trough ◽  
Efficient Technology ◽  
System A ◽  
Linear Fresnel Reflector ◽  
Selection Of

The objective of this study is the investigation of different solar concentrating collectors for application in a trigeneration system. Parabolic trough collectors, linear Fresnel reflectors and solar dishes are the examined solar concentrating technologies in this work. The trigeneration unit includes an organic Rankine cycle coupled with an absorption heat machine that operates with LiBr/water. The analysis is performed throughout the year by using the weather data of Athens in Greece. The results of this work indicate that the selection of parabolic trough collectors is the best choice because it leads to the maximum yearly system energy efficiency of 64.40% and to the minimum simple payback period of 6.25 years. The second technology is the solar dish with the energy efficiency of 62.41% and the simple payback period of 6.95 years, while the linear Fresnel reflector is the less efficient technology with the energy efficiency of 35.78% and with a simple payback period of 10.92 years. Lastly, it must be stated that the thermodynamic investigation of the system is performed with a created model in Engineering Equation Solver, while the dynamic analysis is performed with a code in the programming language FORTRAN.

scholarly journals Recovery of waste heat from engines: an AD view

2018 ◽  
Vol 223 ◽  
pp. 01007
Author(s):  
Miguel Cavique ◽  
João Fradinho ◽  
António Gabriel-Santos ◽  
António Mourão ◽  
António Gonçalves-Coelho
Keyword(s):  
Energy Efficiency ◽  
Future Development ◽  
Diesel Engines ◽  
Scientific Community ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Kalina Cycle ◽  
Recovery System ◽  
Marine Applications

The Newcomen engine (1705) and the Watt engine (1769) are good examples of coupled and uncoupled designs. The Watt engine had an efficiency of about 3%, a shallow value when compared to engines of nowadays while resulting in a significant increase at those times. According to Axiomatic Design, Watt engine had a better performance than the Newcomen design due to its uncoupled nature. This work aims at applying the same reasoning to choose between new inventions designed for recovering waste heat from engines as to produce work. The most popular of those inventions are the organic Rankine cycle (ORC) and the Kalina cycle. Marine applications use those inventions to improve the efficiency of Diesel engines because the increase of weight of the recovery system does not affect power propulsion. A controversial regarding what system to develop occurred in scientific community as well as in the industry. The application of AD to those cycles classifies ORC as an uncoupled design and the Kalina cycle as a coupled design. Therefore, the ORC might be pondered for future development regarding energy efficiency.

Energy Efficiency and Co2 Emissions of Road Transportation: Comparative Analysis of Technologies and Fuels

2002 ◽  
Vol 13 (4-5) ◽  
pp. 631-646 ◽  
Author(s):  
Pierre Advenier ◽  
Pierre Boisson ◽  
Claude Delarue ◽  
André Douaud ◽  
Claude Girard ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Co2 Emissions ◽  
Road Transportation

scholarly journals Features of application of ORC-technology at compressor stations of metallurgical enterprises

2021 ◽  
Vol 1 (1) ◽  
pp. 61-76
Author(s):  
I. S. Antanenkova ◽  
◽  
S. I. Svetogor ◽  
Keyword(s):  
Energy Efficiency ◽  
Negative Impact ◽  
Organic Rankine Cycle ◽  
Electrical Energy ◽  
Rankine Cycle ◽  
Iron And Steel ◽  
Energy Saving Potential ◽  
Internal Efficiency ◽  
Iron And Steel Works ◽  
Secondary Energy Resources

The use of secondary energy resources in metallurgy with their conversion into mechanical and / or electrical energy allows not only to reduce the negative impact on the environment, but also to significantly increase the energy efficiency of facilities. As a result the study design, the results of which are presented in this article defined the energy-saving potential at the compressor station metallurgical enterprises (on the example of the system of supply of technical gases of the process of production of rolled steel from iron ore PJSC Magnitogorsk Iron and Steel Works). A schematic solution and a method for determining the operating parameters of an installation operating according to the so-called "organic Rankine cycle" (ORC installation), which allows obtaining additional electrical energy for production needs by utilizing the heat of interstage cooling of compressor units, are proposed and justified. The features of the implementation of this technology are identified, and the working substance of the ORC installation that meets the requirements of safety and energy efficiency as much as possible is proposed for implementation. The values of the internal efficiency, the power of the ORC installation and the share of usefully utilized heat in the implementation of the proposed scheme are estimated.

scholarly journals Proposed Inland Oil Tanker Design in Bangladesh Focusing CO2 Emission Reduction Based on Revised EEDI Parameters

2020 ◽  
Vol 8 (9) ◽  
pp. 658
Author(s):  
S. M. Rashidul Hasan ◽  
Md. Mashud Karim
Keyword(s):  
Energy Efficiency ◽  
Co2 Emissions ◽  
Design Parameters ◽  
Co2 Emission Reduction ◽  
Inland Waterways ◽  
Water Effects ◽  
Computational Fluid Dynamics Cfd ◽  
Energy Efficiency Design Index ◽  
The Individual ◽  
Oil Tankers

Though inland ships account for a small portion of the total global CO2 emissions from shipping, from the individual country’s economic and environmental perspective, this is very important. To reduce CO2 emissions from sea-going ships by increasing energy efficiency, the International Maritime Organization (IMO) adopted a generalized Energy Efficiency Design Index (EEDI) in 2011. However, due to the variation in environmental, geographic and economic conditions, a generalized EEDI cannot be established in a similar fashion to that established by IMO. Shallow and restricted water effects, different fuel qualities (to reduce operational cost), increase in engine power requirements, reduction in carrying capacity, cargo availability, etc. make the EEDI by IMO inadequate for inland waterways. Therefore, an EEDI formulation based on revised parameters has been proposed for the inland ships in Bangladesh. This paper focuses on the possibility of CO2 emissions reduction from inland oil tankers in Bangladesh by implementing the revised EEDI formulation (henceforth denoted as EEDIINLAND). A sensitivity analysis was performed for the different ship design parameters of those oil tankers. Based on the analysis, suggestions were made on how to design inland oil tankers in Bangladesh using the revised EEDI formulation for reducing CO2 from the current level without any major cost involvement. Keeping the same speed and capacity, the vessels were redesigned based on those suggestions. The Computational Fluid Dynamics (CFD) analysis of those redesigned vessels using ‘Shipflow’ showed a reduction in CO2 emissions through increasing EEDIINLAND by 7.54–13.65%.

Energy Recovery Improvement Using Organic Rankine Cycle at Covanta’s Haverhill Facility

2010 ◽  
Author(s):  
Heping Cui ◽  
Jim Lynch ◽  
David McQuillan ◽  
Joseph Becker ◽  
Tim Sundel
Keyword(s):  
Energy Efficiency ◽  
Power Output ◽  
Energy Recovery ◽  
Landfill Gas ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Low Grade ◽  
Waste Energy ◽  
City Water ◽  
Net Power Output

Covanta Energy, in cooperation with United Technologies Corporation (UTC), has evaluated, designed, and is in the process of installing an Organic Rankine Cycle (ORC) system at its Haverhill Energy from Waste (EfW) Facility to improve heat recovery and energy efficiency, and to generate more clean renewable energy. ORC systems have been applied in geothermal applications and some other industrial processes to recover low grade and waste energy to generate electricity. This paper describes the design and integration of the ORC system into the Haverhill EfW steam cycle, and the landfill gas engine system, which also operates at the facility. The anticipated energy efficiency improvements and increased net power output have been analyzed and simulated. The results show that the integration of the ORC system could lead to a potential increase in the net power output by as much as 305 kWe in the summer and by 210 kWe in normal weather. It is also anticipated that with the ORC system the facility has the potential to improve the overall plant energy efficiency, as well as save city water.

Integrated Steam/Organic Rankine Cycle (ISORC) for Waste Heat Recovery in Distributed Generation and Combined Heat and Power Production

2010 ◽  
Author(s):  
Yaroslav Chudnovsky ◽  
Mikhail Gotovsky ◽  
Valentin Arefiev ◽  
Mark Greenman ◽  
Victor Fomin ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Distributed Generation ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Industrial Applications ◽  
Heat Utilization ◽  
Energy Efficiency Improvement ◽  
Waste Heat Utilization ◽  
Cycle Efficiency

Energy efficiency improvement and waste heat utilization in power generation and energy intensive industrial applications are in the main focus of the researchers and engineers nowadays. A great deal of experience was gained by the industrial leaders such as ORMAT, Siemens, Caterpillar, Turboden, and others. However, the commercially and semi-commercially available systems for waste heat utilization have certain restrictions that limit the utilization cycle efficiency to approximately 18%. The paper presents an innovative concept of waste heat utilization system that allows reaching the utilization cycle efficiency up to 28–30% employing low-boiling media such as butane, propane, pentane and others. Applying such a concept to Distributed Generation systems the overall energy efficiency could be boost up to 58–60% and further up to 90% in case of CHP production.

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