Basics

The knowledge of engineering materials and their properties is of great importance for a design engineer. A design engineer must be familiar with the effects which the manufacturing processes and heat treatment have on the properties of the materials. The engineering materials are mainly classified as: 1. Metals and their alloys, such as iron, steel,…

Heat treatment: Heat treatment is used to control heating and cooling of the metals to change the properties and also to improve the performance or to enable processing. For example: Heat treatment is the method of hardening of a piece of hydrocarbon steel rod. After heating the rod when it turns to red heat, and…

S.no Centrifugal Compressors Axial Flow Compressors 1 In centrifugal compressors air flows radially in the compressor In Axial flow compressors air flows parallel to the axis of shaft 2 Low maintenance and running cost High maintenance and running cost 3 Low starting torque is required Requires high starting torque 4 Not suitable for multi staging Suitable…

Incorrect casting product design is one of the reasons why you end up producing faulty casting components. The communication language between casting product design engineer and casting component manufacturer is casting drawing. The following five tips will help you in designing a good casting product and in preparing a correct casting drawing: ●      1. Deciding parting line: The parting…

In the concurrent design and analysis of parts, accompanying testing, and field usage, predictive failure assessment is critical for success.  This phase links existing or potential load environment scenarios with empirical performance.  In terms of FEA consulting, I have been fortunate enough to work on U.S. Army development programs to evaluate and implement analysis techniques considering improved product…

During the suction stroke the atmospheric air must be entered into the engine cylinder. Then the suction pressure must be below the atmosphere air. At the start of the suction stroke the piston speed is less, hence less air will enter into the cylinder. Then the difference between the atmosphere pressure and the suction pressure…

§  Fuels are any material that store potential energy in forms, which upon burning in oxygen liberates heat energy. §  Calorific value of fuel is the total quantity of heat liberated when a unit mass or volume of fuel is completely burnt. §  Higher or gross calorific value (HCV) in the total amount of heat produced when a…

Comparison between Fire Tube and Water Tube Boiler can be done in 14 aspects. Those aspects are operating pressure, passage of material type in tubes, rate of steam generation, handling of load fluctuation, floor area requirement, efficiency, operator skills, design, maintenance cost are listed below in the tabular form. S.No Fire tube boiler Water tube boiler 1 In Fire-tube…

In an air-cooling system, the outer surface of the cylinder and cylindrical head in reciprocating engine is cooled by air flowing over them. To increase the heat transfer rate from the surface, the metallic fins are cast on the cylinder and cylinder head. These fins increases the heat transfer area and thereby heat transfer rate. Air cooling…

Liquid Nitrogen (77 K boiling point) is one of the important cryogen in liquid state and which is used for precooling medium to produce liquid Helium and Hydrogen. Liquid Nitrogen is also used to improve the cold and cryo working of metal in metallurgical field. It is also used to cool and store the foods, tissues, blood….