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The latest line of Oster Horse Clippers and Grooming Supplies are impressive for the horse lover doing their own grooming or for the professional groomer. The only problem is that there is a lot to choose from. Let me help take some of the work out of it. The following is a review of the Oster pet and animal clippers either designed or most used for horses. There are also some usage recommendations depending on what your grooming needs.

Oster Power Max Clipper - The Power Max is the old reliable in the Oster line. It comes with variable clipper speeds, either 3,700 cutting strokes per minute (spm) or 4,200 spm supporting broad cut or more detailed trimming jobs. The Power Max is touted for its quiet operation and contoured shape that is easy to grip and lightweight. It is 20% lighter than the previous version. The quiet operation comes from the Permanent Magnetic Rotary Motor noted for providing precision cutting. It comes in a kit that contains two replacement drive tips and a #10 CryogenXblade with AgION (Reg. Trademark) antimicrobial coating to reduce the growth of bacteria, mold and mildew. It comes with a 12 foot cord and compatible with all A5 series blades. Expect to pay from $125 to $140 dollars for this low end reliable grooming equipment.

Oster Clipmaster Variable Speed Clipper - The Clipmaster is the next level up in endurance and capability. It is a blue color and is fully variable. The operator can adjust from 700 to 3,000 spm. The Clipmaster is designed for a professional groomer that needs reliability and comfort that allows them to go the whole day. The Clipmaster also has a newly engineered tension knob that allows for ongoing and easy blade adjustment depending on what grooming job requires. The Clipmaster kit comes with clipper, an 83/84 AU Blade Combo Pack, 15 ft. cord, air intake screen, lubricating oil and a storage toolbox. Expect to pay from $240 to $300 for the Clipmaster. It is the higher end of their horse clipper line.

Oster Golden A5 2-Speed Clipper with a #10 Blade - The A5 is a long time Oster offering. The housing was redesigned this year and is made from a new virtually unbreakable material. No more worrying about drops on concrete or hoofs stepping on them! They will take the punishment. The Golden is 2 speed with a normal for general grooming and a high speed (1/3 faster) for quick body clipping. Like the Power Max, the Golden is compatible with the A5 size blades and comes with a #10 blade which is required for equine grooming. The entire kit includes with clipper, size #10 blade, extra brush and spring assembly, cleaning brush, blade guard and 12 foot cord. Expect to pay $160 to $180 for the Golden A5 kit. It is worth the money in reliability and endurance.

Oster Turbo A5 2-Speed Clipper Set - The Turbo's higher of its two speeds runs over 4,000 spm. Its designed with a wider sweep to cover more surface resulting in faster cutting time. Like The Golden A5, the Turbo has a body touted as unbreakable. The Turbo is also designed to cut through coarse, thick hare making it ideal for some of the longer hair breeds of horses. As the other Oster Horse clippers, the Turbo comes in a kit including a #10 wide Cryotech TM blade, oil and carrying case. The Turbo comes in a blue color. Again, if you own a longer hair breed, then the Turbo is most likely right for you. Expect to pay $160 to $180 for the Turbo.

Oster Power Pro Ultra Clipper - The Power Pro is Oster's cordless Clipper. It is designed to be light and ergonomic with a nonslip grip. It has a Universal brand motor that provides excellent cutting performance at the lower speeds (max 3,300 spm) of the cordless clippers. Higher speeds cause more blade heat and draw more energy than is acceptable for the cordless designs. The slimmer, longer lasting battery provides up to 60 minutes of operations between charges. If your grooming job requires cordless because of location or any other reason, the Power Pro is an excellent choice. It comes with clippers, charger and battery. Expect to pay from $205 to $225 for the Power Pro. Like we said earlier, this is a great clipper for those jobs that a corded clipper won't work.

Our site http://www.horsegroomingsupplies.org, summarizes and reviews all the major brand horse clippers. Use us for a quick link to make your purchase. Save time and money.

Air Polution Riding Wave of Technological Change

1.0    Introduction

 

The search for a better managed human society and what brought human today threshold of civilization is as whole as man himself. The triple bottom factors of quest for knowledge, the need for production exchange, organizing power of social community – these factors have equally become interrelated and self reinforcing with each advanced technology and organization, scale, trio of energy, economy and environment and matter remaining keys to human civilization; followed by invention of language or ability to communicate, and facilitation of his mobility. All of which went through their course slowly through building stones out of stumbling blocks and some actually amazingly came out through extraordinary revolution. Likewise, all this dynamic changes through differential approach and methods which can be categorized as conventional methods of idea, hypothesis, experimentation and observation.

Over the years, time needs, growth, speed, and knowledge and of course scarcity and competition have created demand that necessitated man to build complex institution- all of which require energy to move them. Likewise vast range human development has flown precise measurement of energy and manipulation of delineated discrete object all which has no doubt reduce the crushing boarding of physical work and freed man for other pursuit.   Today pollution from energy carry a very large percentage and as the carbon release has exhaust the little oxygen we are sharing and the ozone later that is protecting us from mother naturedue to lack of cogent risk assessment on systems we have been building. More so, because conventional assessment focus more on economics while environment and its associated cycle is put in oblivion, probably because of difficulties associated with uncertainties. For years many think that everything that run air is infinite, the atmosphere and the ocean is providing us source of freshening, winds and current are far more vulnerable to polluting activities that have run off into them too many poisons that the air and the ocean may cease to serve more purpose if care is not taking to prevent pollution. To this end the challenge of air emission is recognized to:

 

• Be  main inherent consequence of powered shipping
• Have link to fuel oil burning as main source
• Have links with continuous combustion machineries - boilers, gas turbines and incinerators

 

This paper will discuss how the challenge climate change, ozone depletion , global warming touched engineering including engineering requirement of ship operation and the impacts of  emission from ship, rising egalitarian techno economic and environmental sustainable abatement method to reduce and control emission. As well as matching development and improvement necessary for energy efficiency and performance of new propulsion system ( all electric ship for short sea shipping  and hybrid gas electric system for high sea shipping) through comparison and simulation of extreme conditions.

 

2.0    Emission Ride on Ship Technology

 

This issue of environment become so sensitive recently with respect to infrastructure development and most especially in everything we use energy for because most of the past polluting activities has turned into poison through point form  effect and are  presently  having  advert effect on our in quality of air and water. In a nutshell, the three worlds we live are currently are out of balance and in potential conflict and man is in the middle. Historical records of number of calamity that has resulted to heavy lost and pollution are calling for news and philosophy of doing things through assessment of economics and environmental issue relating to energy, without compromising to the later has a lot of case have been based. This is already equally calling for a number of regulations, that will subsequently affect, policies change and procedures relating to the above and their effect to design of new systems and modification of existing one.

 

In regards to energy, It all started with environment natural source of energy,-animal, windmill, watermill, then steam, electricity and nuclear, with so much water and wind and even the sun all of which are the primary source of energy that goes through natural circle to support human life and the planet, the remain the leanest inherited  resources, new technology has not turn this vast potential income into usable supplies- for years the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

Figure 1. -  Global warming potential

 

Cleanest and the safest are among the inexhaustible, the use of energy is likened to reckless try and error, experimentation, and age that discover the big gap between renewable and non renewable energy, and how human have adventurism has lead to replacing renewable natural given of nature by non renewable and associated backlash has called for new ways to do things and importance of using advantage of nature and its given. Renewable source of energy range from energy from the sun, hydrogen and biomass- as for the later, using waste to produce biomass is very. reasonable than growing crops that suppose to be used for food to produce energy or else we end up breaking the food chain and when scarcity of products involve come we all have to pay for it anyway. I am not going to discuss much about renewable source of energy or green house gas today.  Land based technology will required to be transfer sympathetically to the marine industry via availability of engines, systems and technical assistance. Marine craft operation in inland water operation requires fuel supplied in bulk rendering the NG distribution viable. The use of an alternative fuel for vessel propulsion will leads to a design review of Power plant, associated fuel system and propulsion train; effectively reshaping areas such as Machinery Arrangement, Hull Form, Compartmentation, Cargo Deck, Payloads, Superstructure, Interior Layouts, Escape & Safety, Route Options, etc.

 

Recent environmental revolt from critical like issue of sea level rise, flooding, has brought awareness  regarding system failure and reality of uncertainty and point form environmental degradation, which further show that the two world are currently out of balance and in potential conflict and human is in the middle. This call for new philosophy to design system based on risk and goal based holistic sensitivity. Since, it has become obvious that, everything we use on land end their way to the rivers through ground water which then end up to the sea, this make management of water quality, maintaining balance of its purity and preventing substance running into it is a crucial point in protecting the total environment as a result of this International environmental get serious and encourage  and call for Galvanize the scientific community by set up panel's /collaborating scientists and technical bodies and encourage use existing scientific bodies and research centers for global observation systems that include taping informal sources of information related to early warning and dealing with problem of sharing sensitive data among countries as well using human capacity and rapid spread of Internet as a tool for information compilation, discussion, and dissemination. Some of the land base regulation that are passed are :

 

•         (Oil Spills Protocol)  - Protocol Concerning Specially Protected Areas and Wildlife (SPAW Protocol)  

•         Protocol Concerning Pollution from Land-based Sources and Activities (LBS Protocol)

•         Agenda 21

•         To address greenhouse gas emissions from ships- Adoption of  control and prevention measures in 2003, as well as problems associated with the transfer of harmful aquatic organisms in ships' ballast water – adoption convention  in 2004 to support the International Convention on the Control of Harmful Anti-fouling Systems in Ships 2001; and the diplomatic conference also address implementation of the International Convention on Oil Pollution Preparedness, Response and Co-operation 1990.

•         IMO also get serious and passed MARPOL annex six under a diplomatic confernec and bypassing the usual taxcit procedure .  MARPOL cover: Annex I-  Oil ,Annex II- Noxious liquid chemicals ,Annex III- Harmful Goods (package), Annex IV- Sewage, Annex V – Ballast water whereby Annex VI- emission and air pollution (SOx, NOx and green house gas, emission of ozone depletion gas (ODG))

 

Figure 2 – Emission from marine engine - ABS

New annex VI to MARPOL focus on  :

 

•         Control and management of Ballast water to minimize  transfer of harmful foreign species

•         Global prohibition of TBT in antifouling Coating  - phase out scheduled for 2008

•          International convention on oil pollution, Response and cooperation (OPRC) - 1990

•         Policy to combating major incidents or threats , control to prevent, mitigates  or eliminates danger of marine pollution through port to its coastline from a maritime  casualty

•         Annex protocol under this convention (HNS Protocol) covers marine pollution by  hazardous and noxious substances (HNS)

 

Chapter III of Annex VI on the requirements for the control of emission from ships include:

Regulation 12- Ozone depletion substances

Regulation 13 – NOx

Regulation 14 -SOx

Regulation 15- Volatile Organic Compounds

Regulation 16 – Shipboard Incinerator

Regulation 17 – Reception facilities

Regulation 18 – Fuel Oil Requirement

Regulation 19 – Requirement for platform and drilling rigs

 

Response to air emission from ships:

 

•         Technical code for prevention of air emissions from ships

•         Diesel engine test

•         Survey

•         Certification of compliance (IAPPC)

•         NOx compliance limit -30% reduction

•         Review of 5 years interval

•         Restriction on use of fluorocarbons on board

•         Carbon dioxide emission from ship

•         Fuel quality

•         SOx Emission Control Areas (SECA)

 

Requirement for control of emission from ship - Other requirement and standards :

 

•         Fuel grade - ISO 8217

•         Emission test - ISO 8178

•         One common limits for all engine - International harmonization of regulation and equipment standards

 

Thus IMO and the shipping industry got the greatest credit today regarding the way we design and operate , but nonetheless, the value of water and the environment will operate will always require vivid demand  for near zero intolerance to discharge or emission Regulation of maritime business and operations has for many year centralized focused philosophy of safer sea and cleaner ocean, however since the protection of marine environment became important international issues pollution of the world ocean augmented to linchpin of international legislation and this is calling all areas of human endeavor to move towards sustainable development. Thus, pollution from shipping only contribute10% of all discharge. Years of marine operation paid little attention to air pollution, IMO declaration for duction under new annex IV MARPOL change this. NOx is given limit of 30% reduction , and sulfur capping of 0.5-5.0% limit, Emissions from ocean-going are forecast to increase 9% to 13% by 2010 and 20% to 29% by 2020, above levels in 2002. Bulk carrier, container and tanker vessels are the three largest contributors.

 (Fleisher, 1996).

 

Overall energy efficiency should ideally be defined as useful work done in relation to the energy consumption. Thus the efficiency is highly dependent upon the type, size and speed of the ship. Those considerations are generally outside of the scope for this study, although mention will be made when discussing machinery systems that are especially suited for certain types of ship. The interaction of propeller, underwater hull and rudder is important when propulsion efficiency is defined as efficiency in conversion from shaft power to thrust power, this is outside of our scope, consequently under power transmission the study will refer to free running (open water) efficiency of propellers when necessary.

 

.Study conducted by ABS concluded on the following configuration propulsion configurations as best practice hybrid option for large LNG carrier is given below:

 

Table1 – current propulsion configuration- source ABS

Slow Speed Engine

Direct drive

 

 

Medium Speed Engine

Reduction Gear

 

Electric Propulsion

 

 

High Speed Engine and

Reduction Gear

Gas Turbines

Electric Propulsion

 

 

 

Understanding the basis on which these fuel efficiencies are obtained makes it apparent that the efficiency gained over a conventionally powered vessel will vary according to environmental conditions and vessel use. Prof. Frankel paper on propulsion of LNG also supported this further comparation under emision concluded on the following data:

 

Table 2- Environmental comparison – Source – Prof  Frankel

 

GTE

DFD

SSD

NOx

2

15

2

SOx

0

6

0.3

CO

0.1

0.3

0.3

CO2/100

5

4.6

4.7

 

Presently there is need to strengthen efficiency and effectiveness of  short sea service towards sustainable distribution and intermodal link from  Inland Waterways where is there is potential for future development at places where Inland Traffic originates and terminates from the waterfront.( Frankel, 2006). At a time when the pollution caused by the vehicular traffic is playing havoc with the environment, the ecofriendly mode of transport can be of some help.

 

Hybrid of gas turbine or Diesel with electric couple with dual fuelling that include natural gas, is explorable option for existing trans ocean vessels, while all electric ship using natural gas and microturbine generator are explorable for costal ships. While interesting development for new ship need exploration on technologies to improve integrated full electric propulsion with advanced power management systems:

 

-          Improved converter and power electronics technology

-          Improved generators and motors

 

3.0 Best Practice Generic Technology

 

Recent time have seen rapid general augmentation of awareness of environmental issues which is creating pressure of need for deeper understanding of engine propulsions system and treatment options, engine modification and new propulsion plant options. Emission restriction have long been imposed on land based power plant by authority, but the advent of green house gas has resulted to extension to marine diesel engine, especially in port and coastal traffic because ship has proved to be a significant contributors of NOx. Sequel to this IMO has passed the long standing resolution Annex IV under MEPC, for new limit to prevent air pollution at sea and coastal water. The research require urgent attention in order to be part of solution to states of the degrading ozone layers, acid rain and smog formation, water quality, detrimental effects on vegetation green house gas global warming and consequential catastrophe issues. Research conducted by Norwegian University of Technology and British Maritime Technology ltd deduced the following

Table 3 – Emission and reduction measures

category

components

sources

Current of method of reduction

Emission from air

COx

Machineries/incinerator/boiler

 

 

SOx

Machineries/incinerator/boiler

Low sulfur fuel exhaust washing

NOx

Machineries/incinerator/boiler

Exhaust cleaning, engine modification, or input media

HC

Machineries/incinerator/boiler

 

Noise

Machineries/cargo operations

insulation

Particles

Machineries/incinerator/boiler

 

HFC/Halon

Fire extinguisher / refrigeration  system

Sequential loading , vapor return, recovery plant

VOC

Cargo operation

 

 

Table 4 – reduction potentials

category

components

Current reduction potentials

Emission from air

COx

1-40% operational planning and speed selection

3-7 % efficiency improvement  of machineries

70-80 % ( figure uncertain) by limiting the sulfur content in the fuel and / or means of sea water washing

 

NOx

80-90 % by selective catalytic reduction (SCR)

10-30 % by engine turning / injection retarded

20-30 % by engine modification

 Fuel or injected in cylinder, several alternative methods available with varying reduction potential

30-60 %by sequential loading gas transfer

VOC

70-90% by recovery plant

 

The research  concluded  with recommendation for need to conduct research on technical abatement related to technological energy efficiency and fuel use in fleet.(Morrall 2000)

 

3.1 Mitigation and Reduction Measures

 

There are 3 ways by which pollution can be controlled

•         Cleaning fuel prior to combustion (fuel preparation such as fractionation , catalytic cracking , desulphurization )

•         Reducing the production of pollutants during combustion ( state combustion, exhaust gas recirculation and reduced temperature level )

•         Cleaning exhaust gas

 

All these methods attracts major design modification  that heat economic of energy balance

Figure 3- Mitigation and Measures – Source – ABS

 

 

Primary measures:

 

Secondary measures:

 

Operationally

 

Retrofitting for existing engines:

For new engines

 

Use of low sulfur fuel – ( less than 6g/kwh)

 

HFO sulfur content - Need for oil company to change their equipment for low sulfur oil production-> ship-owner will face high cost, additive solution has been expensive so far

-Reduction of NOx, Sox, + cost saving through boiled off gas reuse.

-Exhaust gas cleaning system or technology

-Sox for SECA (Emission Control Area) & Fuel  change over

-Nitrogen reduction - through choice of

 propulsion system

 

-Sulfur reduction -in  bunker fuel

 

-Reliquification plants for LNG/LPG carriers->

- Use of Turbo generator plant –>

 --PM - SAC volume is the void space in the fuel valve downstream of the closing face

 

-On board Catalytic system like : Converter, water injection Emulsion

-speed reduction

(10-20% )

-Use of shore power connection 

 

Dual fuel option for low sulfur restricted areas ( 1.5-4.5)– need for additional tanks. The content of hydrocarbons in the exhaust gas from large diesel engines depends on the type of fuel, the engine adjustment and design.

 

-Use of NOx injectors

-Retarding injection timing

-Temperature control of the charge air

-Exhaust Gas Recirculation (EGR)

-Fuel / water emulsion

-Water injection

-Humid Air Motor (HAM)  Technique- addition of wet steam to the engine

50% reduction

-Selective Catalytic Reduction (SCR)

 

Engine certification

-Pre-certification,

-Technical file clarification on engine family and group,

-Final certification

 

Alfa Lubricator system - Reduction in cylinder oil consumption-> reduction in particulate emission

-Electronic control engine  Programmed fuel injection for exhaust valve-Emission reduction

- Use of high efficiency air flow for power take off reduce fuel + reduction of emission.

 

 

3.2 NOx Technology  -

•         Minimizing the NOx emissions from diesel engines is a pressing international problem

•         In response to this,  engine manufacturers are exploring all means of reducing NOx emissions

•         The graph shows the international regulation standards adopted by the IMO in September 1997

 

 

Figure 4 – NOx Compliance limit   – Source Yanmar

 

Low-NOx type marine diesel engine for new series engines use the following methods to reduce NOx emissions: NOx depends on : Fuel efficiency, Large bore, Low speed, therefore most mitigation technology when after the above characters to :

 

•         NOx is generated when combustion gas is held at high temperature.

•         To reduce NOx generation, the following steps are required:

1. Lower the combustion temperature.

2. Shorten the combustion time.

•         Improvements aimed at NOx reduction are:

1. Delay of fuel injection time 
2. Use of SCR

 

The IMO NOx emission limit will reduce the average NOx emission factors for ocean-going vessels by 4.1% for main engines and 8.3% for auxiliary engines. The model could help reduced emission from MISC ship further and make MISC ship meet future local and international emission regulation. NOx reduction by means of SCR can only take place in the mentioned temperature window, because if the temperature is too high, NH3 will burn rather than react with the NO/NO2.  At too low a temperature, the reaction rate would be too low, and condensation of ammonium sulfates would destroy the catalyst, To reduce the NOx level by up to 98%, it is necessary to make use of the SCR (Selective Catalytic Reduction) technique.

With this method, the exhaust gas is mixed with ammonia NH3 or UREA (as NH3 carrier) before passing through a layer of a special catalyst at a temperature between 300 and 400C, whereby NOx is reduced to N2 and H2O, the reactions are, in principle, the following:

 

•          4NO + 4NH3 + O2 ? 4N2 + 6H2O

•          6NO2 + 8NH3 ? 7N2 + 12H2O

 

The amount of NH3 injected into the exhaust gas is controlled by a process computer dosing the NH3 in proportion to the NOx produced by the engine as a function of the engine load. The flexibility of the electronically controlled engine can improve the emission control and operation of NOX reduction by means of water emulsion. When operating with an SCR catalyst, it is difficult to maintain the engine dynamics and the turbocharger stability at transient engine loads. With the electronically controlled engine, a faster load-up by early exhaust valve opening and late injection timing is possible; also, modulated exhaust valve timing stabilizes the turbocharger.

 

EGR system has two water injection stages, with a simple water separator unit after both. The first water injection stage involves humidification with salt water in order to ensure that there is no freshwater consumption in the second freshwater injection stage. The outlet temperature of the first stage is approximately 100oC, this stage has a single multi-nozzle injector. This system is connected to the exhaust system in the same way as the simple EGR system, but the EGR line is routed to a .bubble-bath. scrubber from the which cleans and cools the exhaust gas. the water loop in the scrubber system is cooled and monitored in a Water Treatment Skid with a filter and settling system, cleaning the used sea water.

 

Figure 5 – SCR Technology

 

The NOx production only takes place at very high temperatures (2,200°K and above), and it increases exponentially with the temperature. The EGR method is based on a reduction of the oxygen content in the cylinder charge, and the HAM method is partly based on reducing the oxygen content of the cylinder charge and partly on increasing the heat capacity of the cylinder charge by the addition of water vapor. The addition of water to the HFO by homogenization increases the viscosity, to keep the viscosity at the engine inlet at 10-15 cSt, max. 20 cSt, It is necessary to raise the temperature to more than the 150oC which is standard today (max. 170oC at 50% water) raise the fuel oil loop. 10% NOx reduction for each 10% water added, the water amounts refer to the injected amount of fuel oil

 

Figure 6 – NOx reduction performance

At increased recirculation amounts; the HC and PM emissions are reduced corresponding to the reduction of the exhaust gas flow from the engine.

 

 

 

 

 

 

Figure 7 - Typical Pressurized Fuel Oil System with Homogenizer

 

3.3 Sox technology

Annex VI to MARPOL 73/78 limits the sulfur content of MFO to 1.5% per mass and will apply in designated SECAs. The first SECA is the Baltic Sea ->enters into force on 19 May 2006.  The North Sea Area and the English Channel SECA will enter into force 22 November 2007. The geographical boundaries for these two SECAs  are defined in MARPOL 73/78. EU directive 2005/33/EC, requires ships to burn fuel oil with less than 1.5% sulfur in the North Sea SECA from 11 August 2007.) . New SECAs are expected to be adopted in the future based on certain criteria and procedures for designation of SECAs. MARPOL. Annex VI, Regulation 14 (4b) also gives the option of using an exhaust gas cleaning system (EGCS) which reduces the total SOX emissions to 6.0 g/kWh.

 

3.4 Particulate Matter Technology

Reduced sac volume in the fuel valves has greatly reduced PM emissions. Advantage brought by SAC is shown below

 

 

Figure 8 – SAC valve for injection performance

 

Alpha lubricator -This involve technology application of high-pressure electronically controlled lubricator that injects the cylinder lube oil into the cylinder at the exact position and time that optimize conventional lubrication lubricators. A parallel line is followed by the SIP (Swirl Injection Principle) lubricator, where the oil is injected prior to piston passage, thereby having the oil distributed by the air swirl. Use for marine engines and engines for power generation purposes, very low feed rates have been demonstrated, with oil consumption down to 0.5 g/bhph. By applying low oil dosage -> emission is lowered +  less cylinder oil is wasted in the engine- where it could end up in the system oil, resulting in increased TBN and viscosity.

 

Figure 9- Alpha Lubricator – Source ABS

 

Figure 10 –Particulate Matter Measure Performance - ABS

 

The picture above show the use of alpha lubricator reduces lub. Oil consumption and PM. also the filters used for dilution tunnel PM. measurements taken before and after the scrubber at 75% load and 15% recirculation

 

3.5 Impact of using new fuel

 

•         That technology will transfer sympathetically to the marine industry via availability of engines, systems and technical assistance.

•         Marine craft operation in inland water operation as well as deep sea will require fuel supplied in bulk rendering the NG distribution viable

•         The use of an alternative fuel for vessel propulsion will leads to a design review of:

-         Power plant

-         associated fuel system

-         propulsion train;

•         Effectively reshaping areas such as Machinery Arrangement, Hull Form, Compartment, Cargo Deck, Payloads, Superstructure, Interior Layouts, Escape & Safety, Route Options, etc.

 

 

Figure 11 – Fuel efficiency – Source - RINA

 

3.6 Technology for new built

 

•         Alternative energy

•         Alternative fuel and dual fuel engines

•         Infusion of water mist with fuel and subsequent gas scrubbing units for slow speed engines

•         Additional firing chamber

•         Potential for gas turbine complex cycle

•         Potential for turbocharger diesel engine

•         Compound cycle with : gasified  fuel,  external compressor, combustion with pure oxygen

•         Exhaust after treatment for medium speed engines

•         Azipod

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exhaust Gas Recirculation Measure performance

 

Best Practice to meet compliance

 

•          Lloyd performed a research on exhaust gas emission assessment

•          Roll-Royce built Allen 5000 Series engine with electronics fuel injectors  that control NOx

•          Mak engine has developed a new MDS engine with reduction in NOX without fuel penalty

 

Electric Propulsion Technology

 

The overall power train efficiency with DEP is around 87-90%. Use of permanent magnets in electric generators and motors as well as general advances in semiconductor technology may improve this figure to around 92-95% in the near future. Electrical transmission will consist of three basic energy conversions:

 

-          From (rotating) mechanical energy into electrical energy: E-generator

-          From electrical energy into (rotating) mechanical energy: E-motor

-          Some form of fixed or controlled electrical conversion in between: power converter

-          Simulation, risk assessment and emission quantification are other remain supporting method for decision and selection of new systems.

Electric propulsion system require development of  the following technological areas:E-generator - The following tree gives a systematic overview of existing types whose improvement will be sought: Mechanical ==> Electrical: E-Generators

Ø       DC Generators

Ø       AC Generators

E-Motors - The following tree gives a systematic overview of existing types whose improvement will be sough: Electrical ==> Mechanical: E-motors

Ø       Driving motors

Ø       Synchronous Motor

Ø       Positioning motors

          Power converters - The following tree gives a systematic overview of existing types: Electrical ==> Electrical: power conversion or transformation

Ø       Fixed transformers

Ø       Controlled converters       

Ø       Static converters

Ø       -Inverter

 

References

 

1. IMO (2000) marine environmental protection committee 44th session available at: http: www.imo.org/meeting/44.html
2. R. A Karam and K. Z. morgan, energy and environment  cost – benefit analysis: supplement o an international journal , Georgia Institute of Technology , London, 1975 pp. 491-507.
3. N Slocombe, D. S. 1993. Environmental planning, ecosystem science, and ecosystem approaches for integrating environment and development. Environmental Management .
4. Ghai, Dharam and Jessica M. Vivian ,.Introduction., in Dharam Ghai and Jessica M. Vivian (eds.), Grassroots Environmental Action: People.s Participation in Sustainable Development, Routledge, London, 1992, pp. 1-22.
5. D. Stapersma. Diesel Engines: A fundamental approach to performance analysis, turbocharging, combustion, emissions and heat transfer. Part A: Performance analysis"; DUT wb 4408 A / R.Nl.N.C. CC 09; 1996
6. "The new concept 3-way catalyst for automotive lean-burn engine: NOx storage and reduction catalyst ", Catal. Today 27, 63-69 (1996).

7.        Henley,E.J. Kumamoto,H.,1981, Reliability Engineering and Risk Assessment. Prentice- Hall Englewood Cliff, NJ.

8.        Kristiansen, S. and Krlsen, J.E., Analysis of Causal Factors and Situation Dependent Factors. Report No. 80-1144,Dets NORSKE Veritas, Hovik, Norway.

9.        MSA, 1995, Project 366: Formal Safety Assessment: Draft Stage 1 Report. Marine Safety Agencies, Southampton, February.

1. Safety of Life at Sea Convention, 1974, consolidated edition, IMO London, 1996.
2. International Convention on the Prevention of Pollution at sea, 1973, consolidated edition, IMO London, 1997.
3. Ingemar Palsson, Gert Swenson. Formal Safety Assessment, Introduction of Modern Risk
4. Assessment into Shipping, Report 7594, Swedish National Maritime Administration, SSPA, Maritime Consulting, February 1996.

14.     Barn thijsen, 2004 Dual Fuel Electric LNG carrier Propulsion, design and operation of gas carrier ,RINA, UK

15.     Murphy, 1996]M. Murphy, Variable speed drives for marine electric propulsion, Trans IMarE, 1996, Vol 108, part 2, pp 97 – 107, [Niini, 1995], M. Niini, J. Laapio

16.     Nigel Gee,2002 Power solution  for new breed of high speed ro-Ro and Ro Pax Ferries,ship propulsion system

About the Author

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