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Logarithmic Mean temperature Difference is used to measure the Heat transfer rate in double pipe heat exchanger. The rate of heat transfer is got from the formula - Q = U.A.LMTD . U= Heat Transfer Co-efficient A= Heat Transfer Surface Area LMTD= Mean Temperature Difference LMTD is the logarithmic temperature difference between the hot and cold fluids passing through the each ends of heat

Electrochemical Machining (ECM) is based upon Faraday's law of electrolysis. Faraday's law states that the the mass of a metal altered by the electrode is proportional to the quantity of electrical charges transferred to that electrode. In ECM the removal of metal is controlled by the anodic dissolution in the electrolyte. In ECM - The workpiece acts as the anode The tool act as cathode.

Aluminotherrnic welding is commonly known as Thermit welding. As a subset, these processes use the heat from highly exothermic chemical reactions of solid, particulate materials (or, occasionally, solid particles and a gas) to produce melting and joining, also called coalescence, between metals. Most often, the reactants employed are oxides with low heats of formation and metallic reducing

Catalytic Converters Catalytic converter is a way of treating exhaust gases. These convert harmful pollutants into harmless gases. A catalyst is a material that causes chemical change without entering into chemical reaction. In effect the catalyst encourages to react with each other. For example, in the HC/CO catalytic converter, the catalyst encourage5 the HC to unite with oxygen to produce

Automobile engineering is an indispensable part of Mechanical Engineering. Many mechanical engineering students study this discipline only get themselves acquainted with this subject. Most of the students choose Mechanical Engineering to get themselves familiar with the mechanism of automobile. Automobile Engineering Books are must for those students. Proper guidance from teachers is of course

The purpose of this article is to create a list of mechanical engineering books for the core courses of Mechanical Engineering. There are a number of books available for the meticulous study of Mechanical Engineering subjects. If we were able to study all the books of ME core courses then it would have been great ! But sadly it is not possible. And most of the times it is not possible to buy all

Bernoulli's Equation states that - For an incompressible liquid (density constant) which is flowing in a continuous stream; the total energy remains the same for all the particles, when the particle is moving from one point to another point. Mathematical expression of Bernoulli's equation: P1/w + (v2 )1/2g + z1 = P2/w +( v2)2 /2g + z1 = constant Here P1 , P2 = Pressure at points 1

The energy from the sun reaching the earth per day ranges from about 600 Btu (British Thermal Unit) / square feet for Northern Europe to about 2000 Btu/square feet for arid regions near the equator. More energy from sun strikes the earth in one hour than all energy consumed on the planet in a year! A summer day’s sun at noon provides a square, meter of land with a power input almost a kilowatt.

Introduction: Definition of Solar Concentrators: Solar Concentrator is a device which concentrates the solar energy incident over a large surface onto a smaller surface. The concentration is achieved by the use of suitable reflecting or refracting elements, which results in a increased flux density on the absorber surface compared to that existing on the concentrator aperture. In order to

This post provides the description and analysis of different types of solar air heaters used in space heating and drying purposes. The Solar air heaters have the following advantages over other solar heat collectors. Solar Air Heater Advantages The need to transfer heat from working fluids to another fluid is eliminated as air is being used directly as the working substance. The system

Variables needed for getting dimensionless groups In most of the fluid phenomena the following variables may be important - Length. L - Acceleration due to gravity, g - Mass density, ρ

Similitude in Fluid Mechanics There are a lot of advantages of dimensional analysis and similitude in fluid mechanics. With the application of dimensional analysis and similitude or laws of similarity, number of experiments can be reduced. Costs can be reduced by doing experiments with models of the full size apparatus. Performance of the prototype can be predicted from tests made with model.

Thermodynamics if basically a science of energy. And the definition of energy varies from situation to situation. But in general we can say that energy is the cause of all changes. And this energy situation cannot be explained without thermodynamic laws. And the first law of thermodynamics is the expression which defines the principle of conservation of energy. According to the law of

What is hydroelectric power (facts) ? Let’s start with the hydroelectric power definition: In hydroelectric power plants, the potential energy of water is converted into mechanical energy which runs a generator. Hydraulic power is a naturally available renewable energy source. Power of a hydroelectric power station is given as:

What are renewable energy sources ? Renewable Energy Sources refers to the sources which are not at risk of being finished. They are replaced naturally. At present times it seems that the use of renewable sources are inevitable because the non - renewable energy sources are getting scarce. The non-renewables like coal, crude oil. nuclear sources, natural gas, wood fuels, shale oil are almost

Hello my fellow science lovers and Mechanical Engineers. Today I am gonna solve an example problem of Fluid Mechanics or Fluid Power (Fluidics) using Very Important Moody Diagram. Before you start to look at the problem you can have a look at the following post - How to Use Moody Diagram Problem Solving Using Moody Diagram Problem - A Hydraulic oil has the kinematic viscosity of 50

Main Components of Nuclear Power Plant The main components of Nuclear Power Plant are – Nuclear fuel Nuclear Fuel is fissionable element or nuclei. They should undergo nuclear fission by nuclear bombardment. They should be able to sustain the nuclear chain reaction. Examples of Nuclear fuels are U233 , U235 , Pu239 . The percentage of different Uranium isotopes in the

Different Energy Sources This diagram will show you the different types Energy Sources - Energy Units and Conversions In SI method the unit of energy is Joule (J). In CGS unit dyne-cm (equals to 10-7) In British Unit - foot pound force (ft-lbf) Other units are British Thermal Unit (BTU) 1 BTU - 1055 Joule . Kilowatt hour (kWh) 1 kWh = 3.6 x 106 J = 3.6 MJ. Calorie . 1

The CI engine combustion process is extremely complex − It depends on the characteristics of the fuel the design of the engine's combustion chamber and fuel-injection system the engine's operating conditions The process is an unsteady, heterogeneous,three-dimensional combustion process. Some important consequences of diesel combustion are as follows: Injection

Similitude Applied to Engine Design For a new design the number, and, therefore, the size, of cylinders to be used for a given power output is an extremely important decision In practice, the greatest differences in cylinder design are caused by the differing requirements of various types of service. Within each service category, however, a surprising degree of similitude in cylinder design