Saturday, December 28, 2019
Types and Characteristics of Compressors - 622 Words
The compressor is the main key components of the air-conditioning unit, hence considered the heart of a refrigerating system. There are four main types of rotary compressors: rotary vane compressors, scroll compressors, wobble plate compressors and swash plate compressors that are used in automotive conditioning units. Each type of these compressors carries with its inherent operational characteristics. For example, in comparison with other rotary types, scroll compressors exhibit high performance, low noise and small vibration, but are difficultly to manufacture and have complex structure (Akazawa et al., 1996; Yi and Qian, 2008) . For further improvement in the air conditioning and refrigeration system, many researchers focus on the Improvement of the compressor unit; In particular, developing a new compressor technology. A new compressor will indeed be a great effort to further improve the general performance of the air conditioning system. Most of the vehicle air conditioning systems use the type of reciprocating compressor. One could say that the popularity of reciprocating mechanism is the result of their well-known compression concept which has been applied also in the internal combustion engine. The rotary compressor has proven durability and high efficiency for automotive applications while offering smaller form factor at the same time (Chang, 1983). Besides their good reliability and efficiency, rotary compressors developments have resulted in simpler structure andShow MoreRelatedSupercharged Bike Engine and Its Simulation1408 Words à |à 6 Pagessupercharging is to increase the increase the amount of air intake in an engine by making use of a compressor. This compressor is also called a supercharger. A supercharger works by increasing the pressure or density of air supplied to an engine, which allows for burning of more fuel per cycle by the engine because of the increased oxygen with the increased amount of a ir being supplied to the engine. The compressor takes in the air from the atmosphere at atmospheric pressure, and if the carburetor is connectedRead MoreCharacteristics Of Early Warning Of Equipment Chain Gas Pipeline Essay921 Words à |à 4 Pages3.1. Characteristics of early warning of equipment chain in gas pipeline 3.1.1 Characteristics of early warning problem (1) Time sequence Early-warning is the process that warning system addresses alarm information to managers in time before emergency [15, 16]. It is indistinguishable and unexplainable to deal with early warning signals and complex questions for most methods. Not only does accidents evolvement rely on current condition, but also on regular historical changes in conditions, becauseRead MoreStages Of Axial Flow Compressor1267 Words à |à 6 Pagesthrough a stage in axial flow compressor A stage is a pair of rotating airfoil and stationary airfoil in an axial flow compressor. As the air passes through the rotating airfoil (also called a blade or rotor), its velocity increases. High velocity air then passes through the stationary airfoil (also known as the stator or just vanes) where it is retarded converting the kinetic energy due to velocity increase into static pressure. f) Reasons for twisting axial flow compressor rotor blades The rotor bladesRead MorePerformance Evaluation of Rotary Vane Compressor Using Oil Separator in Car AC System1121 Words à |à 4 Pages9 CHAPTER 1: ââ¬Å"PERFORMANCE EVALUATION OF ROTARY VANE COMPRESSOR USING OIL SEPARATOR IN CAR A/C SYSTEMâ⬠1. INTRODUCTION One of the primary functions of an automobile climate control system is to provide the desired cooling and stabilize cabin temperatures to comfortable levels in hot climatic conditions. With the increasing demand for more energy efficient systems and thermal comfort in automobiles, the automobile AC system needs to be optimized to deliver the required cooling performance with minimumRead More1. Introduction. 1.1. Definitions Of Crude Oil And Refining.1630 Words à |à 7 Pagesprocesses are to separate the crude oil into different fractions or saleable components, to shift the original component ratio and properties to meet the customerââ¬â¢s demand and to remove impurities to improve quality of product. 1.2. Crude oil characteristics Crude density is commonly measured by API gravity as it provides a relative measure of crude oil density. The higher the API number, the lighter the crude. Crude oil is classified as light 34, medium 24 ââ¬â 26, or heavy 24. Sulfur content measuresRead MoreEssay Types of Turbines1080 Words à |à 5 Pagesindustry and home use. There are three main types of turbines which are wind, steam, and gas turbine (refer to Figure 1 in Appendix 1). First type of turbine is the gas turbine. It is referred as combustion turbine to transform fuel into a valuable energy in the form of mechanical revolving shaft or an aircraftââ¬â¢s high velocity thrust. A combustion turbine comprises of a gas generator segment and power conversion region. The generator segment consists of a compressor, combustion chamber, and turbine, excerptingRead More Assessment of Product: The Refrigerator Essays1264 Words à |à 6 Pagesdimensions can be categorized as this Performance Performance in simple terms is how well a product caters to the basic operational characteristics. Refrigerator is a home appliance which is expected to keep the foods inside the compartment at sufficient temperature to stop the growth of bacteria. In the Modern-day there are mainly five types of refrigerators Top freezer refrigerators, bottom freezer refrigerators, French door refrigerators, Side by side refrigerators and multi door refrigeratorsRead MoreNatural Gas Transmission Pipeline Network System Essay3439 Words à |à 14 Pagessource of energy in world is natural gas (NG) and is due to its environment friendly characteristics. The distance between the resources and the place where it is needed is usually far apart. It is more economical to transport natural gas by pipeline compared to Liquefied Natural Gas (LNG) for short distance. In transmission pipeline network system (TPNS), gas flow through various devices such as regulators, compressors, and valves. Through TPNS, the g as pressure reduces result of the friction with pipeRead MoreMonitoring Performance And The Conditions Of Machines1201 Words à |à 5 Pagesis to minimize unplanned maintenance of machinery as well as improves the reliability and safety. In recent year, wired online condition monitoring (CM) systems have been applied in many industrial machines. Because the systems relies on different types of cables for field applications, the installation, the maintenance and cost become the major obstacles of their wide applications [2],[3]. Remote condition monitoring allows the collection and transmission of machine data remotely without disturbingRead MoreAircraft Instruments System Reviewer1449 Words à |à 6 Pagesdifferential between the pitot, of ram air pressure and the static pressure of the air surrounding the aircraft. BOURDON TUBE ââ¬â type of pressure-indicating mechanism used in most oil pressure and hydraulic pressure gages. -Consists of a sealed, curved tube with an elliptical cross section. ABSOLUTE PRESSURE ââ¬â measured from zero pressure or vacuum. RIGIDITY IN SPACE ââ¬â characteristic of a gyroscope that prevents its axis of rotation tilting as the earth rotates. This is used by directional gyros and gyro
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