3D Printing

3D printing involves building a three dimensional object from a computer aided design model by successively adding materials layer by layer on top of each other using a 3D printing machine. Within the last decade 3D printing usage has increased dramatically that this technique is now used for industrial applications such as building apartments and…

Air Compressor

An air compressor is a device used to compress atmospheric air taken in through inlet valves and compressed to a high pressure, the compressed air being used for various purposes such as cleaning, spray painting, pneumatic operations, starting the main engine, etc. Air compressors force air into a tank, increasing its pressure. When the tank…

Sonar

Sonar or Sound Navigation Ranging is a technology which involves the use of sound to detect vessels and other objects underwater or on the surface to aid navigation and avoid collisions. Sonar are of two types: active sonar and passive sonar. Active sonar emits pulses of sounds and listen to echoes from other vessels or…

Refrigeration

Refrigeration is defined as the science of providing and maintaining temperature below that of atmospheric temperature. It means continuous extraction of heat from a body which is already below atmospheric temperature. Refrigeration involves cooling a space, substance or system to lower its temperature or maintain that temperature below its ambient temperature. Energy in the form…

Stern Tubes

The stern tube is a hollow tube located at the lower stern part of the ship carrying the tail shaft and connecting it to the propeller,bearing for the tail shaft, lubrication arrangement and sealing arrangement. The propeller shaft or tail shaft is supported in a stern tube bearing. The bearing being at the end of…

Deep Submergence Rescue Vehicles

A Deep Submergence Rescue Vehicle or DSRV is a marine vessel used for rescuing crew from downed submarines and other clandestine missions. These are specialized vessels that require highly skilled professionals to operate these vessels and successfully carry out complex rescue missions. There are a number of countries that operate DSRVs with different designations for…

Heat Exchangers

Heat exchangers are devices used to transfer heat between two or more fluids. They are used for both heating and cooling processes. The fluids may be separated by a solid wall to prevent mixing or may be in direct contact. They are widely used in refrigeration, chemical/ petrochemical processing plants, power stations, refineries and sewage…

Generators.

A generator is a device that converts mechanical energy to electrical energy. The energy generated is used to power our everyday activities in homes, factories, ships. These generators are driven by prime movers such as steam turbines, gas turbines, internal combustion engines or hand cranks which drive the generators to produce electricity. Generators provide nearly…

Steam Turbines.

A steam turbine is a mechanical device that converts thermal energy from steam into mechanical energy. The steam generated from the boiler is heated to a very high temperature and pressure before it passes over the turbines at high speeds. The steam strikes the turbine blades at high speeds causing it to rotate on a…

Hydrogen Fuel Cells.

A fuel cell is a device that converts stored chemical energy into electrical energy. Hydrogen fuel cells utilize hydrogen gas and oxygen gas as fuel. The products of the reaction are water, electricity and heat. This is a stark contrast to internal combustion engines, coal fired power plants and nuclear power plants which all produce…