Air Refrigeration System: Definition, Types, Advantages & Disadvantages

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What is Air Refrigeration System? An air refrigeration system is a type of refrigeration system that uses air as the working fluid to transfer heat and achieve cooling. In these systems, air undergoes a thermodynamic cycle involving compression, cooling, expansion, and heating to accomplish the removal of heat from a particular space or substance. There …

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Actual Vapour Compression Cycle: Definition, Working, Advantages, Disadvantages, Applications

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What is Actual Vapour Compression Cycle? The actual vapor compression cycle refers to the real-world operation of a vapor compression refrigeration or air conditioning system, taking into account various factors that deviate from the theoretical ideal cycle. Unlike the theoretical vapor compression cycle, which assumes perfect and reversible processes, the actual cycle considers the practical …

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Dulong’s formula for H.C.V and L.C.V?

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Dulong’s formula is a mathematical equation used to estimate the Higher Calorific Value (HCV) and Lower Calorific Value (LCV) of a fuel based on its elemental composition. The formula relates the calorific values to the percentages of carbon (C), hydrogen (H), sulfur (S), and oxygen (O) present in the fuel. The equation for estimating HCV …

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What is Thermodynamic Process in Gases?

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What is Thermodynamic Process in Gases? A thermodynamic process in gases refers to the transformation of a gas from one state to another, involving changes in temperature, pressure, volume, and internal energy. These processes are governed by the laws of thermodynamics and are essential for understanding and analyzing the behavior of gases in various physical …

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Calorific Value of Fuel: Definition, Units, Formula, Types, Applications, Advantages

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What is Calorific Value of Fuel? Calorific value, also known as heating value or energy content, is a measure of the energy released during the combustion of a substance. It quantifies the amount of heat energy produced per unit of the substance. Calorific value is typically expressed in units like joules per kilogram (J/kg) or …

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Units of Refrigeration or Rating for Refrigeration

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What is Units of Refrigeration? The unit of refrigeration is a measure of the cooling capacity provided by a refrigeration system. The two most common units used to express refrigeration capacity are the ton of refrigeration and the watt. These units of refrigeration capacity are essential in describing the performance and efficiency of refrigeration systems. …

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Air Refrigeration Cycles: Definition, Types, Working, Advantages, Disadvantages

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What is Air Refrigeration Cycles? An air refrigeration cycle is a thermodynamic cycle that describes the process of cooling air to lower its temperature. It is commonly used in air conditioning and refrigeration systems to maintain comfortable temperatures in buildings or preserve perishable goods. The cycle involves the compression, cooling, expansion, and heating of air. …

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Polytropic Process: Definition, Examples, Applications, Advantages & Disadvantages

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What is Polytropic Process? A Polytropic process is a thermodynamic process in which the relationship between pressure (P) and volume (V) can be expressed by the equation: P⋅Vn=constant Here, n is the polytropic exponent, which can take on different values depending on the specific conditions of the process. The polytropic process is a generalization that …

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Top 10 Automobile Engineering Interview Questions & Answers (updated 2024)

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1. How does an automotive gas turbine differ from a conventional internal combustion engine? In an automotive gas turbine, also known as a gas turbine engine, the combustion process occurs continuously and at a constant pressure. This is in contrast to a conventional internal combustion engine, where combustion happens in discrete cycles at varying pressures. …

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Air Refrigeration Cycle: Definition, Advantages, Disadvantages & Limitations

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What is Air Refrigeration Cycle? The air refrigeration cycle is a thermodynamic cycle used in air refrigeration systems to provide cooling or refrigeration. It operates on the principle of removing heat from a specified space or substance, typically referred to as the refrigerated space, and rejecting that heat to the surroundings. While the air refrigeration …

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