What's a marine diesel generator?
The type of generator specially designed to be used aboard ships and also on inland waterway vessels is the marine diesel generator. It is a typical diesel generator, but with additional equipment and modifications to cope with the tough marine environment while being able to meet special requirements for maritime applications. A vessel diesel generator is designed for supplying electrical power to a ship's propulsion system, lighting, and other electrical systems while at sea. They are also meant to operate under a wide range of climatic conditions such as exposure to salt water, vibration, and salty air.
The diesel generator sets usually have a compact form, so they are suited to installation in narrow spaces on board ships. Additionally, they are often equipped with additional technologies such as soundproof enclosures, vibration damping, and redundant cooling systems to name a few. Selecting the right marine diesel generator to meet your ship's specific requirements and use will be of paramount importance, so it is recommended that you seek advice from an expert on Marine Diesel generators in order to select the most suitable set for your particular needs.
In order to provide electrical power to various boat systems and accessories, a large proportion of recreational vessels of more than 28 feet 8 inches in length, as well as work vessels of all sizes, carry marine generators. In circumstances where the main engines are stopped or shore power has been interrupted, such as anchored at sea, it is useful to be able to rely on a Marine Electric Power Unit while not necessarily necessary. The alternative energy source reduces battery power consumption considerably and uses significantly less fuel than a conventional engine.
Like any motor generator, a typical marine engine is fueled by either diesel or gasoline. A diesel boat normally comprises a diesel power generator, a gasoline-powered vessel, and a gasoline engine. A power generator on board a boat will normally be connected to the vessel's engine line, which means that it would not require its own special fuel tank for space consumption. There is some excitement in marine circles these days regarding the emergence of efficient and clean-burning hydrogen-powered boat generators. The only disadvantage to a hydrogen-powered marine generator at present is locating a fueling station to provide the hydrogen fuel.
Marine generators have a number of sizes and are generally measured by the amount of electrical current that each creates, kilowatts being one thousand watts. In comparison to larger, leisure or working ships such as luxury yachts, fishing vessels, ferry boats, and harbor tours which can often be equipped with generator capacities exceeding 25 kW on board, smaller recreational craft may need only three kilowatts. To calculate the energy use of all appliances, instruments, and systems expected to be powered by a generator, it is well recommended that boat owners considering an electric generator consult with their yacht's manufacturer so as to determine what kind of marine electrical generator should be chosen.
Because it is designed and built to cope with moisture and corrosion problems that may occur in a sea environment, Marine Generators are different from ordinary household or industrial generators. In addition, most cruise generators do not require a self-contained cooling system for which there is no need to constantly pump seawater into the generator core; hydraulic pumps keep them cool.
What are the main parts of a diesel generator?
Diesel generators are made up of three main components:
1. Engine: The engine is the power source for the generator, converting the energy from the burning of diesel fuel into mechanical energy. Because of their high fuel efficiency and reliability, diesel engines have become the common engine for generators.
2. Alternator: It is the responsibility of an alternator to convert mechanical energy produced by a vehicle's propulsion system to electric energy. For the purpose of producing AC electrical power, alternators are usually using electromagnetic induction.
3. Control panel: The monitoring and controls of the operation of the generator system shall be carried out by the control panel. The system is made up of various instruments and devices, e.g. voltage meters, circuit breakers, or start-stop controls. With its high fuel efficiency and reliability, diesel engines are widely applied for the production of generators.
Other components, including fuel tanks, exhaust systems, and cooling systems to a certain extent, are also typically part of an engine package comprising these three main components. The special components and design of generator sets shall be determined, depending on your application and energy requirements, and in order to identify the most appropriate generator set for your particular needs it is recommended that you consult a power generation expert.
What are the marine diesel generators' uses?
To produce power for cargo ships, boats, cruises, ferries, commercial vessels, and appliances of all kinds from kitchen equipment to electric propulsion systems, diesel plants are a good choice for both seaborne transport and tourism. Marine diesel engines are an appropriate choice of propulsion for use on board a vessel because electrical systems and power generation in the maritime sector need reliable, stable resources capable of operating with good efficiency even during rough working conditions.
What's the length of time a diesel generator lasts?
Depending on some factors such as the following, the life expectancy of a diesel generator may differ widely:
- Use: The lifetime of the generator can be affected by its frequency of use as well as the load it is subjected to. The lifespan of generators that run more frequently at high loads may be shorter than those that are used less often.
- Maintenance: The life of the generator can be extended when it is kept regularly and properly maintained. It is advisable to maintain the generator in good condition with regular oil changes, checks, and tightening of connections as well as cleaning of filters for air and fuel.
- Quality: its life can also be affected by the quality of the generator components and production. A quality component and an excellent generator usually last longer or are manufactured more with lower quality material, compared to one component that is produced poorly or by low-quality materials.
- Environment: The lifespan of the generator can also be influenced by the environment in which it is used. The lifespan of a generator may be shortened by exposure to extremes in temperature, moisture, and dust.
Generally, a diesel generator is able to provide between 10 and 15 years of reliable service while some generators have known that they can remain well beyond this period with the right maintenance and care. In order to ensure that the generator lasts for as long as possible, careful attention must be paid to the manufacturer's instructions on maintenance and use of the unit and regular inspection and servicing by a competent technician.
How long can a diesel generator run continuously in a day?
Several factors such as the size of the generator set, the load to be supplied, and the capacity of the fuel tank are also important for the continuous operation of a diesel engine. The standard big diesel generator unit is capable of operating for up to 24 hours without interruption, and it must usually be refueled after 8 to 12 hours of continuous operation. However, depending on the size of the engine set, the load it is carrying, and its fuel capacity, there will be no real running time. Depending on the size of the fuel tank and load requirement, smaller portable diesel generator sets may have a shorter continuous running time which usually ranges from 4 to 8 hours.
It is important to remember that the engine, generator, and other components are subject to a great amount of stress during continuous operation for long periods. The frequent maintenance and repair of the generator equipment shall be a prerequisite for ensuring its reliability and effective operation, and it is recommended to consult with an electrical engineering expert when determining the best operational practices in your particular set of generators.
GETTING MARINE DIESEL GENERATORS
When selecting a new marine diesel generator based on the right power needs of the vessel, maintaining an existing marine diesel generator, or executing a repower of a marine diesel generator that’s still seaworthy, it’s crucial to get the details right to never lose power while on the water.
When selecting a maritime diesel generator, it is typically the identification of the vessel's kW requirements that poses the initial obstacle. For example, a push boat will require power to several computers, lighting, an air compressor, cooling systems, TVs, or anything else which could be used as ancillary electronics. For the buyer, breaking individual power requirements for each of these applications may help to improve his or her understanding of the ship's energy needs. In most cases, the person familiar with the vessel will have a good idea of its needs, but it is always a good idea to consult with the supplier on the choice of a marine diesel generator with the correct kW output.
Because their current generation set is not functioning as efficiently as it can, several ship owners are turning to generator re-powering instead of total replacement. High fuel consumption is often addressed by re-powering. Most times, older marine diesel generators can not match the efficiency offered by a generation set with more modern components.
It might also be possible for your generator to comply with existing EPA emission standards through repowering. A repower option may be the most cost-effective means of compliance when your vessel is operating in an area with stricter emission standards. Marine diesel generator repowers can reduce fuel consumption and emissions. Repowers often deliver the added benefits of less downtime and cost savings as well. If you suspect your marine generator isn’t running as efficiently as it could be, discussing a repower with your gen set provider could be a good option, as long as the provider has staff familiar with the parts, service, and repair that a repower requires.
Marine generator in Dubai UAE
One of the members of Marine Generators is that it works with 3000 minutes and it is also possible to reduce. It can also be a water cooler. The design of the generators is very small because they do not need to cool the air around them. Marine Land generators are used for sailing. These types of generators are very light, quiet and widely used. It is designed to be placed inside a soundproof capsule to protect against vibration and noise. When the generators are not installed properly, they do not show any action. The presence of generators is very necessary in recreational trips. In such a way that they are made so compact that they create the least space inside the ship.
Marine power generation
Marine power generation can be done on ships by diesel, shaft, or steam generators. For ports, shipyards, and inland structures, offshore power is used from the power source of onshore power plants. Unlike onshore, the ship's generator has neutral insulation points, meaning that its neutral is not attached to the hull. This is done to ensure that all the necessary machinery is up and running, even if there is a ground fault. Ships operating in international waters generally have a 3-phase DC power supply with a 440V neutral insulation system. Ships such as RORO, passengers, etc., which require a large amount of electricity, are installed with high voltage generators in the range of 3KV to 11KV. On land, the frequency of power supply can be 50 or 60 Hz, depending on the different parts of the world. On ships, 60 Hz is accepted as the standard method, which helps hundreds of engines on a ship run at higher speeds, even if they are smaller. The power supply, which is 440 volts, is reduced to 220 volts or 110 volts for lights and low-power signal equipment using a transformer. All of the ships' electrical equipment is similar to land but has been upgraded to withstand the harsh atmosphere of the sea and the moving ship to withstand the humid environment, high temperatures, salty and corrosive atmospheres, vibration, and so on.
Parts of the Marine Power System
Different parts of the marine power system
Electric ships on board can be divided into five specific systems:
- Generator system
- Main Switchboard System
- Emergency Switchboard System
- Distribution system
- Generator System
The generator system consists of an alternator and a driver for the alternator, which can be a diesel engine or a steam engine.
Many ships are equipped with a shaft generator, which uses the rotation of the ship's main engine to start the alternator and generate additional power.
The electricity generated by these offshore generators is transmitted to the main panel using a busbar. To connect power from the generators to these panels, there is no wiring inside the main and emergency electrical panels on the ships. All high voltage and high current systems are connected by a load bus.
Main switch system
The main panel is considered the distribution center of the ship's electrical system, which receives electricity from the generator and distributes it to the electricity consumption throughout the ship. It provides power to all major ship machinery at 440 volts.
Part of the main panel is provided with a 220V power supply via a step-up transformer. This includes bridge equipment, navigation lights, radio communication equipment, and more. The power supply uses an auxiliary panel to charge the battery, which is used for emergency lights.
Emergency switchboard system
An emergency generator must always be active after the main generator has failed. This emergency generator starts automatically and supplies power to the emergency switchboard.
All emergency equipment is connected to the emergency switchboard. The emergency switchboard is also divided into 440 volts and 220 volts and provides suitable machinery and equipment.
The distribution system comes after the panel and consists of the following items
- Distribution boxes: These boxes are enclosed and made of metal to supply power to local parts of the ship's machinery.
- Engine start boxes: There are hundreds of engines that run several mechanical machines on a ship. Each group of engines is supplied with engine start boxes containing their "on and off" keys along with safety devices. Local meters for amps and temperature are installed on the start panel.
- Shore connection boxes: When the ship is in a port with emission control requirements or during the drying process when the ship's generator cannot operate, the shore force is used to start the ship's machinery. The beach panel is provided, which is usually located near the entrance of the residence or the shelter station to easily accept Kabul beach supply.
Lighting distribution board
The electrical lighting distribution panel provides lighting systems, housing systems, small heating appliances, circuits, and motors of 1/4 hp or less. Emergency shut-off panels: To protect machinery and ship personnel, various emergency shut-off panels are provided at various locations to shut down machinery and equipment in an emergency. The main purpose of installing a distribution system is to have an operational, warning, and safety console for individual or group machines. Power is supplied through circuit breakers to large auxiliary machines at high voltage. Miniature circuit breakers and circuit breakers are used for smaller power supplies.
The working principle of the offshore generator
The generator works on the principle that when a magnetic field changes around a conductor, a current is induced in the conductor. The generator consists of a fixed set of conductors wrapped in coils on an iron core. This is known as a stator. A rotating magnet called a rotor rotates inside the stator to generate a magnetic field. This field cuts through the conductor and creates an EMF or induced electromagnetic force because the mechanical input causes the rotor to rotate. The magnetic field is generated by induction (in a brushless alternator) and by a rotor coil that is energized by DC through sliding rings and brushes.
Marine power system safety
The safety of marine electrical systems includes protecting people from electric shock and damage to machinery due to electrical failure. For the safety of machines, depending on the size and power of the equipment, relays, circuit breakers or fuses can be used to prevent overcurrent or overheating of electrical equipment. Temperature gauges, engine speeds, direction indicators, ammeters, etc. are various devices that are used locally to monitor the performance of machines or electrical equipment and to understand the general health of machines.
marine generator offshore
Generators are engines that are used in all industries and include different types. It can be said that their main job is to convert combustible materials into electrical energy. The good thing about these engines is that they can ignite the material without the need for electricity. Of course, as we said, different types of these engines have different applications and facilities, which you should choose according to the conditions. For example, gas-burning diesels are used in some places. But the topic of this article is the marine diesel generator, which is one of the most important types of diesel generators. In the following, we will introduce you to how to buy, price, use and thousands of other things about this marine engine.
What is a marine generator?
As the name of this product suggests. It clearly tells us that its use is in sea and ship. This engine solves the ship's electrical problems and is considered a kind of electricity generator. No matter what vessel you have in mind, from commercial to pleasure vessels, everyone needs a marine diesel generator to prevent power outages and related problems.
marine generatore oil and gas
Marine diesel generators are a special and specialized category of power generators, products from this family are used in medium ships, pleasure ships and marine projects such as oil platforms and offshore equipment. These diesel generators can work in special marine conditions, and there are special problems due to weather conditions, such as high humidity, high temperature, corrosion of parts due to the presence of salt, etc. . . It has been solved in the best way.
In recreational boats and marine vessels, the electricity produced by this family of diesel generators is directly transferred to electric motors to provide propulsion power and all advanced navigation systems are also powered by this means. In marine, oil and offshore facilities, these equipments play their role as generators of electrical energy in the best way by complying with high standards. The engineering masterpiece of this family of diesel generators is cooling, which is sometimes done directly with sea water.