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- #Principle of ship construction how to#
- #Principle of ship construction install#
- #Principle of ship construction free#
Related Read: General Overview of Central Cooling System on Ships The main engine cooling freshwater cooler and the main engine lube oil cooler have conventionally been circulated with seawater, which apparently passes through the tubes of the cooler. The cooling liquid or the liquid to be cooled could then leak out and will hence be visible preventing any intermixing or contamination.
#Principle of ship construction free#
The other side of the tube plate, which is not fixed is free to move and has seals on either side of a safety expansion ring. Gaskets are fitted between the tube plates and the shell similarly, between the tube plate and the end cover to cater to the leakages from the cooler. The coolers could either be single pass or double pass exhibiting the flow of cooling liquid. The shell is enclosed with water chambers which surround the tube plates completely.
#Principle of ship construction how to#
Related Read: How to do Maintenance of Marine Heat Exchangers on Ships? The tubes are secured in the tube plate by bell mouthing and expansion. The cooling liquid passes through the tubes which are sealed on either end into the tube plate. There are two end plates which are sealed on both the sides of the shell and a provision is made at one end to cater for the expansion. In this heat exchanger, the complete shell is fitted with a tube stack or commonly known as the shell.
#Principle of ship construction install#
Shell and tube type heat exchanger is extremely economical to install and easy to clean however, the frequency of maintenance is higher than other types. This is the most popular type design with a shell accompanying several tubes and the flow of liquid to be cooled is mainly through tubes, whereas the secondary liquid flows over the tube inside the shell. The types of exchangers are mainly defined by their construction and are as follows: Almost all the systems onboard ship depends on heat exchanger where the fluid is either cooled or heated. The type of heat exchanger used for a particular usage depends on the application and requirement. Actually this boiler is just opposite of fire tube boiler where hot gasses are passed through tubes which are surrounded by water.Different types of heat exchangers are used onboard a ship.
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This is the basic definition of water tube boiler. What is a Water Tube Boiler?Ī water tube boiler is such kind of boiler where the water is heated inside tubes and the hot gasses surround them. The steam received from fire tube boiler is not very dry.As the water and steam are in same vessel the very high pressure of steam is not possible.As the water required for operation of the boiler is quite large, it requires long time for rising steam at desired pressure.The disadvantages of fire tube boilers include. Fluctuation of steam demand can be met easily.The advantages of fire tube boilers include.
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As steam is produced, the pressure of the boiler developed, in that closed vessel. The fuel (normally coal) burnt below these horizontal drum and the combustible gasses move to the rear from where they enter into fire tubes and travel towards the front into the smoke box.ĭuring this travel of gasses in tubes, they transfer their heat into the water and steam bubbles come up. Fuel (generally coal) is burnt in a furnace and hot gasses are produced.
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The boiler is essentially a closed vessel inside which water is stored. The basic working principle of boiler is very very simple and easy to understand. Boilers (or more specifically steam boilers) are an essential part of thermal power plants. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, such as cooking, water or central heating, or boiler-based power generation. Disadvantages of Water Tube Boiler What is a Steam Boiler?Ī boiler (also known as a steam boiler) is a closed vessel in which fluid (typically water) is heated.