1000 Projects

The refrigeration system is playing an important role in today’s world in air cooling, food preservation etc and it has become impossible now to imagine life without refrigeration system.

 Cooling is obtained primarily by vapor compression system which uses a specific refrigerant in order to maintain the specific temperature level. Although the vapor compression system is used effectively with which engineers are trying constantly to obtain more good alternatives. This project focuses on one possible alternative.

This Department of Mechanical Engineering Project Abstract on Demonstration of Cooling Effect Using Sound Waves described about the principle of conversion of sound energy into thermal energy by using an acoustic driver system and a stack enclosed by a resonator tube and the air cooling effect is demonstrated by this system. It is an eco friendly system because this system operates in an air medium or any noble gas that does not need any refrigerants.

The project is built to demonstrate the cooling effect with the help of sound waves in a small scale. An experimental setup is demonstrated which shows the possibility to achieve a temperature difference of 10 K across the stack.

Conventional refrigerator chills items with the help of compressing and expanding chemicals which is called refrigerants. The heat is transferred from inside to the outside of the fridge for cooling the inside. Sound wave does the same job and very powerful sound wave also conducts heat. The Helium in an acoustic refrigerator is compressed in a small steel cylinder to a pressure 10 times of the Earth’s atmosphere then speaker gets blast a long unchanging note and sends sound waves vibrating by the helium-filled cylinder.

Conclusion:

This project concludes about the process of conversion of sound energy into thermal energy with the help of acoustic driver system and a stack enclosed by a resonator tube. The air cooling effect is demonstrated by this energy system.

Download Department of Mechanical Engineering Project Abstract on DEMONSTRATION OF COOLING EFFECT USING SOUND WAVES

A cryogenic rocket engine is a rocket engine which utilizes a cryogenic fuel or oxidizer that implies fuel and oxidizer are liquefied gases stored at low temperatures. These engines were important factors for ultimate success to reach the Moon by the Saturn V rocket.

American and Soviet engineers discovered that rocket engines require high mass flow rate of fuel and oxidizer to generate a thrust in which oxygen and low molecular weight hydrocarbons used as fuel and oxidizer pair. Both are in gaseous state at room temperature and pressure. If propellants stored as pressurized gases then the size and mass of fuel tanks decrease efficiency of rocket to obtained the mass flow rate.

The combination of liquid hydrogen (LH2) fuel and liquid oxygen (LOX) oxidizer is widely used which are cheaply and easily available. It has the highest entropy released by combustion if burned.

 Conclusion:

This Cryogenic Rocket Engine Hydrogen Fuel System project concludes that the cryopumps are turbo pumps which are powered through gas turbines differentiated into a bypass flow configuration or main flow configuration.

Download Cryogenic Rocket Engine Hydrogen Fuel System

The main aim of this Project Report on COST EFFECTIVENESS OF MINERAL WOOL INSULATION and PERLITE INSULATION is to have a cost effectiveness analysis of the system of the thermal insulation of the pipe lines in petrochemical plant to carry steam. The chemical plant to maintain temperature of fluids assumes importance since process performs at particular temperature.

 Heat loss through pipes prevents wrapping of pipe with mineral wool. To design an insulation system carries insulating material with economy and effectiveness equally for particular steam line.

 The project is about a thorough study of properties of the materials and to find out material that have properties and application aiming at heat conservation and ultimate economy in running. The properties and behavior of thermal insulating materials are available to the right and suitable for application. Care is taken for an account so that selected material is present without scarcity.

 Heat is a form of energy required to do several activities and heat energy also moves from one place to another and transfer to heat is different from matter to matter. There are three methods by which heat is transferred from one point to other. They are Conduction, Convection, and Radiation.

 Heat is transferred from body to body contact, by actual movement of particles, and without particles in the medium.

 Thermal insulation is a material that retards the heat flow and used as a barrier between two bodies to reduce loss of heat from hotter body into a cooler body. The functions include are Conserve energy,        Control temperature, Control transfer of energy, Retard freezing, and Control fire.

 Conclusion:

 This project concludes about the cost effectiveness of the insulation system satisfactorily. With replacement in the insulation system, heat losses and cost losses and cost of heat loss reduced considerably.

Download Project Report on Cost Effectiveness of Mineral Wool Insulation and Perlite Insulation

It is known that when the inlet air is cooler, the engine has more power. Consider aspirated, supercharged gasoline engines, and turbocharged diesels whereas supercharging increases the oxygen amount in the cylinder that supports combustion of fuel. It is expected because of atmospheric pressure with cylinder filling.

Airflow makes engines power to be more in several methods. The more air is flown through an engine, the more oxygen will be present for burning fuel. More oxygen implies that more fuel is burnt which means more power.

Nitrous oxide increases the amount percentage of oxygen effectively to have a mixture of air, nitrous oxide, and fuel. It means that more fuel is mixed into the working fluid for combustion heat, to expand the working fluid, and increase pressure in the cylinder.

When the compressed nitrous oxide is stored as a liquid in its pressurized container, it depressurizes and changes from a liquid to gas state. It cools the working fluid and an incredible amount of nitrous oxide is being used and nitrous oxide injection is used at wide open throttle.

The air throttle on a gasoline engine controls the density of the intake charge to enter into the cylinder. Increased density implies that molecules get closer together in the air. It is considered that increased air density in unconfined and confined spaces. There are two things that affect air density in the atmosphere pressure and temperature. When atmospheric pressure increases on a barometer then the density also increases and temperature remains same.

Conclusion:

The conclusion is that an engine is normally aspirated or supercharged, gas, diesel, the cooler the intake air, the better. Intercoolers are necessary for every turbo car. The intake charge temperature is important in performance of turbo vehicle and intercooler prevents compressor surge and kills turbo. Intercoolers improve efficiency and power of turbocharged application.

Download Cool Air Equals Power Turbo Intercooler Engineering Mechanical Project Report

The aim of this Construction of Test Apparatus to Identify Different Types of Wood Mechanical Project study is to recognize the wood example by inserting a nail by a hammer that is swung on the test device to insert the nail deeper into the device with a stroke. The test device made and wood specimens examined on the device. The equipment allows inserting the hammer to be managed and hence allowing constant strikes on hammer to obtain with each example.

 On noticing the depth of piercing of nails that is obtained by consistent number of blows and the resistance provided is attained by the wood practically. The hammer strikes the nail by wood structure. When the nail theoretically penetrates through, it forces the cellulose fibers that are very strong tied with lignin. Hence, these determinations of force to pierce the nail are done completely.

 The difference among softwood and hardwood includes plant reproduction. The trees reproduce seeds and seed structures are different. Hardwood trees are angiosperms and plants which form seeds with kind of covering like apple and acorn. Softwoods are gymnosperms. These plants produce seeds which fall on the ground without covering like pine trees that produce seeds in hard cones.

 Conclusion:

 The wood from various kinds of trees include various properties. For instance, Maple wood is very hard. It is simple to curve the nails to pound into the form of maple. Unlike Maple, Pine lumber is soft which can be marked with fingernails. Hence, the information of piercing of the nail can be obtained and achieved with many kinds of wood and help to recognize the wood by providing resisted forces.

Download Construction of Test Apparatus to Identify Different Types of Wood Mechanical Project