DESIGN, DEVELOPMENT AND TEST OF INITIAL TEST INSTALLATION Condensation HEAT TRANSFER IN HORIZONTAL SINGLE PIPE (Abstract)

Posted by drg, Siti Solekhah, Sp., Ort. on Tuesday, October 27, 2009

The phenomenon of condensation has been studied by several scientists, among them Rohsenow and Choi [1.2], he did research and analyze the phenomenon of condensation that occurs on a vertical flat plate. As a first step for further research, as well as help to learn more about this condensation phenomena (especially in a horizontal pipe that many applications), it is designed and manufactured to test the installation of relatively inexpensive, simple and easy handling. The instrument has been designed and created are then tested to see how this tool can work well and provide information about the process of condensation on a horizontal single pipe. Test results showed that the tool is functioning properly marked with the resultant number of condensate in the reservoir. The rate measured condensate reaches 0.061 ml /s.
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How to Repair Calculation of Age Fatigue Bolt

Posted by drg, Siti Solekhah, Sp., Ort. on Monday, October 26, 2009

So far, we use the Goodman diagram that can answer some of our purposes, this chart can determine the fatigue strength of a material but remain less accurate if the strength average close to or more than the price of the material elastic limit. Despite this, lack of comfort is commonly used methods not counted because the parameters that cause the failure of the deformation elastoplastis from the area where the elastic limit is exceeded (at the bottom of the screw). To improve the way these calculations, in this posting will be conducted elastoplastik analysis of strength and strain in the elastic limit area which then made the most appropriate models. To be able to support these methods, the initial study carried out relating to the nature of the material used for the bolts, the steel 35CD4. In addition the calculation is also done on the basis of local voltage using a screw element method. From these initial studies we can obtain the material elastoplastik model, then we choose a model of mechanical failure by using a continuous variable from failures associated with the number of loads cycle.
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Heat Transfer System (General Review)

Posted by drg, Siti Solekhah, Sp., Ort.

Energy in the form of heat to move from areas of higher temperature to areas of lower temperature in three ways namely conduction, convection, and radiation. Conduction heat transfer occurs in solids, heat transfer by convection occurs at the boundary between solid and fluid surfaces, and the radiation transfer occurs between two separate objects even without the intermediary of a medium.
In the radiation heat transfer, energy is transfered by electromagnetic waves in the form of photons with the smallest unit of speed equal to the speed of light. Radiation is grouped into several types, including thermal radiation, X-rays and Gamma rays.
Types of radiation in the mode of heat transfer is thermal radiation, the radiation that occurs simply because the temperatures were just objects.
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DESIGN AND MANUFACTURE OF MACHINE DOUBLE CUP SEALER

Posted by drg, Siti Solekhah, Sp., Ort.

In this time usage of plastic glass as tidiness of light food and beverage many us discover in shop and booths. Tidiness of plastic glass used many because having some excellence for example is light, durable, more economic and anti breaking. Plastic glass which many there are in marketing have various multifarious size measure and form of manner. Result of product to be tidy in plastic glass have to be closed result of the product protected from dirt, insect and dush. Where this machine function to attach plastic at plastic glass as covering with the way of warm-up. System work machine that is where pedal depressed so that its heater will go down and patch at surface of plastic glass which have been given by plastic sheet as its cover. Afterwards free pedal and heater return to position initialy. Process closing of plastic glass finish. To once produce yield two product.
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INFLUENCE OF PREHEATING FUEL TEMPERATURE TO PERFORMANCE OF DIESEL ENGINES

Posted by drg, Siti Solekhah, Sp., Ort.

Imperfect combustion process is a matter to be encountered in efforts to improve the performance of diesel engines. The process of mixing air and fuel is less well become one of the factors causing these imperfections. With the warming up of diesel fuel reached a certain temperature before entering into the high pressure pump will cause a decrease in density and viscosity of diesel fuel so that when injected into the engine fog will form the fuel pellets are more subtle that would cause the fuel mixing process and the air became more homogeneous . In addition, with higher temperatures will make the diesel burn more easily so as to compensate for the short time available for combustion at high spin. Diesel fuel heating can be used as one way to improve the combustion process so that the resulting increase in power and decrease fuel consumption optimally.
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DESIGN AND MANUFACTURE OF INDIRECT FUEL INJECTION SYSTEM FOR HONDA C90

Posted by drg, Siti Solekhah, Sp., Ort.

This research tries to design and create a fuel injection system (fuel supply system) at the Honda motorcycle engine C90 replaces the 1967 production year revenue system through the carburetor fuel he had. Injection system design mechanisms adopted indirect injection with a mechanical drive diesel engine fuel. Mixing of fuel carried in the inlet manifold (inlet manifold) made following the construction of engines, and propulsion cycle utilizing crankshaft (camshaft). Injection system components consist of: the type of fuel pumps and injectors of the Bosch Diesel engines DongTM Jiang (1-cylinder 4 was 363.25 cc), and the cam shaft, fuel pipelines at high pressure, hose lines, fuel injection pumps, air channels and throttle air flow regulator, and the inlet manifold. Test results showed that injection system is made to function at every level of engine speed.
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HISTORY OF INTERNAL COMBUSTION ENGINES

Posted by drg, Siti Solekhah, Sp., Ort. on Sunday, October 25, 2009

INTRODUCTION
One type of machine that first movers are widely used heat engines, ie engines that use thermal energy to perform mechanical work. Energy itself can be obtained by the combustion process, the process of nuclear fission fuel, etc. processes. Judging from how to obtain this thermal energy heat engine is divided into two groups, namely internal combustion engine and external combustion engine.
External combustion engine combustion process occurs outside the machine; thermal energy from the combustion of gas transferred to the machine working fluid through several walls. For example steam engine, all that is required by the machine at first leaving the combustion gas of high temperature. Heat transfer through the walls, or boilers, energy is then entered into a working fluid composed mostly of water or steam. In this process the temperature of the steam and boiler walls must be much more than the temperature of the combustion gases to prevent material damage to the boiler. High self Daengan working fluid temperature, are severely restricted by the strength of materials used.
Internal combustion engines are generally known as the motor fuel. In this group there are piston motor fuel, gas turbine systems, and transmit gas propulsion. Combustion process took place within the motor fuel itself so that the combustion gases that occur at the same time serves as a working fluid.
Motor fuel use piston inside a cylinder which is moving piston translation (and back). In the cylinder that's happened between the fuel combustion with oxygen from the air. Combustion gases produced by the process that can move the piston connecting rod (drive shaft) is connected to the crankshaft rotational motion and vice versa on the opposite crankshaft and crankshaft rotational motion causing the piston translational motion.

HISTORY OF INTERNAL COMBUSTION ENGINE
Today piston motor fuel has a very important development in human life. Almost everyone has been enjoying the resulting benefits such as motor fuel in the transportation field, lighting, agriculture and others. The birth of new talent motors a century ago the first experience ranging from Malaysian citizens who obtain fire with fast conversion path. A sfluyer in bamboo tubes developed by European scholars, starting from the experience Wige generate energy to weapons of powder by burning firecrackers in the cylinder, in the late 17th century just in 2 centuries ago, then in 1960 a French Lenoin develop gas engine .
Two years kemudin Dean Derechas (1862), creating a cycle of karma as a motor fuel out of the motor less efficient.
Then followed by Otto and Langen German nationality in 1876, creating a motor 4 does not (step), and in 1876 Nugald Clak British nationals not to create a motor 2 (step).
In the year 1892 the German Rudolf Diesel has created the engine without initial flames or without a spark ignition.
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