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Marine Boiler What Affects Its Performanceefficiency

High-Pressure Steam Cycle and Boiler Water Treatment

ULTRAMARINESM HP BWT Program • Drew Marine pioneered the "modified phosphate-pH treatment" – Utilizes disodium orthophosphate and caustic so that no "free caustic" is generated in the boiler water – Sodium to phosphate ratio is approximately 2.75:1 and provides margin of safety for good control of the program – Went into effect in the marine industry in the 1960's and has

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(PDF) DESIGN MODELING AND PERFORMANCE OPTIMIZATION OF …

The design modeling and performance optimization of marine boiler using Excel and MATLAB is aimed at designing a boiler to improve the heat transfer performance and efficiency of the boiler.

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Boiler Efficiency Improvement & Heat Loss Explained in

Boiler Efficiency Improvement Steps: After Analyzing heat losses in industrial boilers, boiler engineers or technicians can help you to increase your boiler efficiency by 6% – 10%.. Here are the few boiler efficiencies boosting steps listed below:. Complete combustion of fuel so that no unburnt is left behind is a good practice and will add to the boiler efficiency.

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Boiler Operations That Affect Efficiency (Part 2)

Boiler Operations That Affect Efficiency. (Excerpted from Steam/its generation and use, 42nd edition) In its simplest form, efficiency is the ratio of energy output to energy input, expressed as a percentage. To optimize efficiency, therefore, it is important to minimize input (fuel being a major source) and maximize output (steam production).

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Boiler feedwater - Wikipedia

Both effects will reduce the pipe's overall thermal efficiency when used as a heat exchanger. Boiler feedwater is an essential part of boiler operations. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat. After the steam is used it is then dumped to the main

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Discussion on Improving Marine Boiler Efficiency on Board

boiler, which is located in the ECR, should be checked whether it is functional or not. Marine boiler is oil-fired, high-pressure device with its own fire fighting apparatus. The crew on board should be aware of application method of local fire extinguisher (foam type). In addition, fire drill needs to be carried out periodically to prevent

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A boiler is a closed vessel | aragaw tadie - Academia.edu

A boiler is a closed vessel. LITERRATURE REVIEW 2.1 BOILER By definition, steam generator or a boiler is a closed pressure vessel in which water is heated by combustion and being converted into steam for heating purpose or as a mobile power source (Harry Jr, 1981). A boiler is also known as a tool to convert the chemical energy in the fuel to

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Classification of Marine Boilers and Uses of Steam on Ship

Mar 12, 2013 · 5) For operation of cargo oil pump on most oil tankers. 6) On steam ships, this steam is used for taking or making vacuum inside the condensers. 7) The stripper pumps are driven by the steam ships. For cargo heating on both steam and motor tankers. 9) For warming up the engine in cold areas and prior to starting.

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BOILER CHEMICAL TREATMENT | Marine Boiler-

Mar 16, 2020 · CHEMICAL TREATMENT IN BOILER SYSTEM. The main function of a boiler is to transfer energy from the form of hot gas created through fuel to convert water to steam.Hot steam or hot water is then used in the production process. Feed water often contains impurities, which interfere with performance & efficiency in boiler systems.

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Marine Boilers - Marine Engineering Knowledge Part 1

Typical boiler efficiencies range from about 90% for the best solid biomass fuel boilers to close to 95% for oil- and natural gas-fired boilers, Table 3.2. The main reason for the poorer performance of biofuels is the high moisture content of the fuel, which increases flue gas losses. Table 3.2.

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How to Destroy a Boiler -- Part 1

Oct 13, 2015 · The air vent cock is fitted at the top of the steam space of the boiler. Its purpose are-To release air from the boiler either filling the boiler water or raising the steam. To allow air to enter in the event of boiler cooling down or blowing down. ( to prevent vacuum effect) What are the safety arrangements in marine boiler ? Safety valve

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How do Boilers Work & What is their Use on Ships? - Bright

Jul 29, 2009 · In this article, we look at the construction and operation of the marine boilers found on both steam-powered and fuel oil powered ships. The steam generation process is explained and important key phrases are defined. The various uses for steam aboard ship are described, and the difference between the water tube and fire tube basic designs in explained. Learn about how marine boilers …

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Boiler Water Treatments and its purpose - DieselShip

IMPROVING BOILER EFFICIENCY BY USING AIR PREHEATER V. Mallikarjuna* N. Jashuva** B. Rama Bhupal Reddy*** Abstract: Air pre-heater is a heat transfer surface in which air temperature is raised by transferring heat from other media such as flue gas .Hot air is necessary for rapid combustion in the furnace and also for drying coal in milling plants.

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Common Steam Boiler Problems & How to Troubleshoot Repairs

One boiler problem with the water chemistry that can happen is water leaks. Improper water chemistry inside a boiler can lead to pinhole leaks in the tank, pipes or other parts of the system. Water leaks can occur anywhere in the steam system. Look for dripping around the tank or its pipes, but leaks may also occur away from the tank.

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Performance of Boiler: Effiency, Power and Heat Balance Sheet

May 12, 2020 · The performance of boiler is measured in terms of its evaporative capacity. However, the evaporative capacities of two boilers cannot be compared unless both the boilers have the same feed water temperature, working pressure, fuel and the final condition of steam.

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Corrosion Prevention in Steam Boiler Systems

Apr 25, 2016 · Corrosion Prevention in Steam Boiler Systems. The most common failure and repair issue is the damaging effects of corrosion - it is estimated that the cost of boiler repairs due to corrosion can be in the order of $50,000 to over $1m, plus cost of time off hire. Wilhelmsen insights | 25. Apr 2016. The majority of Marine steam boiler systems

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15 Ways to Increase Boiler Efficiency in Your Facility

The first Aalborg boiler (Scotch marine type) is designed and produced at Aalborg Shipyard, Denmark. In the 1960s, the number of boilers for shipyards around Europe increases. During this decade, the unique combined oil and exhaust gas boiler is designed and introduced to the market. In 1998, the first large oil-fired boiler MISSION OL is

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Common issues found on Boiler feed water like corrosion

It also increases the combustion intensity, provides faster heat release, reduces unburned carbon (UBC) in the ash, permits operation with less excess air, and increases boiler efficiency. However, increased slagging, increased NOx emissions and higher fan power consumption can also result.

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Boiler Efficiency - an overview | ScienceDirect Topics

Boiler Efficiency - an overview | ScienceDirect Topics

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MEO Oral Exam Questions on Marine Boilers

Apr 12, 2020 · 2. Common issues found on Boiler feed water due to scaling. If the inside of a boiler is scaled, there is a great risk that the boiler material will overheat, leading to tube failure. The efficiency of operation will also be adversely affected. Hardness in the feed water will usually present problems in relation to the operation of boilers.

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