Understanding Vibration and Noise Reduction in Mechanical Systems

Vibration and noise are common challenges in mechanical systems, affecting performance, safety, and comfort. Whether in automotive engines, industrial machinery, or household appliances, excessive vibration and noise can lead to structural damage, reduced efficiency, and an unpleasant user experience. This article explores the causes of vibration and noise, their impact, and the engineering techniques used…

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Construction and Working of domestic refrigerator

Evaporator is a heat exchanger which removes the heat from stuffs or foods to be cooled by evaporating (Evaporation condition: BP < Evaporation temperature) the low pressure liquid refrigerant while passing through it. At low pressure, Boiling Point (BP) of refrigerant is low, well below room temperature, thus when exposed to room temperature, liquid refrigerant starts evaporating…

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Why compression ratio of petrol engine is kept low compared to diesel engine?

What is the need of high compression ratio? Today every machine is expected to give higher efficiency. When we talk about petrol engine and diesel engine whose thermal efficiency is directly related to ‘compression ratio’. That means if we want to achieve higher thermal performance in terms of efficiency, we should provide high compression ratio for both the engine….

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Making More Efficient Combustion Engines

Improving internal combustion engine efficiency is a prime concern today. Engineers have devised many methods like turbocharging, cam-less engines, direct fuel injection, VIT, regenerative braking, etc. In this article we discuss the factors limiting the efficiency of ICE and ways to increase it. Increasing Efficiency ●      There is a lot of concern nowadays about the efficiency…

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What is Rocket Propulsion?

This article will review the basic characteristics of rocket propulsion, including the application of Newton’s Third Law of Motion, types of propellants, forces acting on rockets during flight, and more. ●      A rocket is an object that is propelled by the ejection of expanding gases that have been generated from propellants, and that does not depend…

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Why cooling capacity unit of domestic refrigerator and Air Conditioner (AC) is different?

Have you ever wondered ? Why capacity of domestic refrigerator and Air Conditioner (AC) is different though both are refrigeration system? What is the basic difference between them with respect to the cooling capacity? The capacity of domestic refrigerator is normally rated in ‘Litre’. Litre actually a unit of volume and it is also applicable to the domestic refrigerator…

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What will be the change in room temperature if door of refrigerator kept open?

Ans: NO, Rather, temperature of the room will increase over the time, not instantly. Why? To understand this, let us first understand the working of domestic refrigerator. It contains four different equipment namely compressor, condenser, capillary tube and evaporator and it also has refrigerant or working fluid/medium which continuously circulating through all these four different equipment to…

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