DEVELOPMENT OF AN AC SYSTEM USING WASTE HEAT OF AN IC ENGINE(MECH

The refrigerating units currently used in road transport vehicle are of Vapour Compression Refrigeration system (VCRS). This system utilizes power from the engine shaft as the input power to drive the compressor of the refrigeration system, hence the engine has to produce extra work to run the compressor of the refrigerating unit utilizing extra amount of fuel. This loss of power of the vehicle for refrigeration can be neglected by utilizing another refrigeration system i,e. a Vapour Absorption Refrigeration System (VARS).

It is well known that an IC engine has an efficiency of about 35-40%, which means that only one-third of the energy in the fuel is converted into useful work and about 60-65% is wasted to environment. In which about 28-30% is lost by cooling water and lubrication losses, around 30-32% is lost in the form of exhaust gases and remainder by radiation, etc. In a Vapour Absorption Refrigeration System, a physicochemical process replaces the mechanical process of the Vapour Compression Refrigeration System by using energy in the form of heat rather than mechanical work. The heat required for running the Vapour Absorption Refrigeration System can be obtained from that which is wasted into the atmosphere from an IC engine.
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DESIGN OF PRESSURE VESSEL(MECH)

This project work deals with a detailed study and design procedure of pressure vessel. A detailed study of various parts of pressure vessels like shell, closure, support, flanges, nozzles etc. Design is carried according to rules of ASME code section VIII, Division I.

The first chapter deals with detailed study of pressure vessel i.e. the various materials used in pressure construction and temperature are mentioned .It also deals with the study of various parts like flanges, support etc. Various methods of fabrication and testing are also included.

The second chapter includes design criteria .This is followed by procedure of design, which include design shell and its components, nozzles, reinforcements etc.
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We have pleasure in introducing our new project “Rain Operated Wiper In Helmet” which is fully equipped by wiper motor. It is a genuine project which is fully equipped and designed for helmet. The rain operated wiper system is a fully automation project.
• To achieve high safety
• To increase the efficiency of the vehicle
• To reduce the vehicle accident
• To high responsibility
• Less Maintenance cost
Windshield wipers are composed of three essential parts; the blade, the arm, and the motor. The blade is a slender length of rubber that has a triangular cross section, hence the name "blade." This is the part that scrapes snow, water and ice off the windshield and is the part most prone to breakdown. The arm is the part that holds the blade against the windshield and is the mechanism by which the blade is moved back and forth by the motor. The arm usually is comprised of metal and has a hinge that allows the driver to bend the arm to change the blade. The arm is very rarely replaced.
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A cranking motor testing machine is a machine which is used to measure the torque generated by a cranking motor to start an engine. Different size of engine requires different torque to start. By this machine we can check that is a cranking motor can produce the sufficient amount of torque to start it. This machine also uses to determine the other difficulty which comes in the starting of an engine.

For example: - cranking motor is running properly but have an problem of engaging or disengaging of cranking motor gear with the flywheel gears. We can measure the power of cranking motor after repairing or maintenance of it. After maintenance we did not know that how much torque is generated by the cranking motor to start on engine and is this produced torque is sufficient of a particular engine. In this machine help us to know that it works properly or not after maintenance.

Main parts of self testing machine:

(1) Cranking motor
(2) Fly wheel
(3) Bearing & shaft
(4) Hydraulic press & hydraulic cylinder
(5) Brake drum & brake shoe
(6) Pressure gauge

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