In this article we will discuss about the measurement of exhaust gas constituents by two methods: 1. Conventional Method and 2. Modern Methods. The exhaust gas analysis is performed to determine the constituents of various components of gases in the exhaust gas. The analysis is important for determining the air fuel ratio, excess air, combustion products and unburnt components. There [...]
List of Steam Boilers: Types, Parts and Operation! 1. Lancashire Boiler: A Lancashire boiler was first used by about 1840 and is a development of the Cornish pattern. They are still used in considerable numbers in industry, principally on account of their simplicity of design together with reliability and freedom from maintenance costs for repairs and tube renewals which are [...]
In this article we will discuss about:- 1. Introduction to Fluidized Bed Combustion Boilers 2. Pulverized Coal Firing System Used in FBC Boilers 3. Classification 4. Thermal Efficiency 5. Advantages. Contents: Introduction to Fluidized Bed Combustion Boilers Pulverized Coal Firing System Used in FBC Boilers Classification of Fluidized Bed Combustion (FBC) Boilers Thermal Efficiency of FBC Boiler Advantages of FBC [...]
In accordance with the Indian boiler Regulations the following mounting should be fitted to boiler: Two safety valves, two water level indicators, a pressure gauge, a steam stop valve, a feed check valve, a blow off cock, an attachment for inspector's test gauge, a man hole and mud holes or sight holes. Boiler of Lancashire and Cornish type should be [...]
In this article we will discuss about the construction and working of various boilers with diagram. Construction of Lancashire Boilers: The modern Lancashire boilers are dish ended and welded pattern at least for higher pressures, instead of the older flat ended riveted type. The dish ended construction reduces the tendency of bulging of the end plates and therefore it does [...]
Most of the boilers are fitted with accessories. They either increase the efficiency of the boiler plants or help in their working. The following accessories are attached to a modern boiler: Boiler Accessory # 1. Economizers: The greatest item of heat loss in a boiler plant is the heat carried away in the flue gases up the chimney or stack. [...]
There are different types modern high boilers used: 1. La Mont Boiler 2. Benson Boiler 3. Loeffler Boiler 4. Schmidt-Hartmann Boiler 5. Velox Boiler. Type # 1. La Mont Boiler: The La Mont boiler is a first forced circulation boiler introduced by La Mont in 1925. This boiler is water tube type. The water circulation and schematic location of different [...]
The following article will guide you about how to calculate boiler efficiency by indirect method. Definition of Boiler Efficiency: The boiler efficiency is defined as the ratio of heat actually used for producing steam in a certain period to the heat supplied in the furnace during the same period. Both quantities being measured in the same units. The boiler efficiency [...]
The following article will guide you about: How much Air is Required for Complete Combustion? Stoichiometric Air-Fuel Ratio: The stoichiometric air-fuel ratio can be defined as ratio of amount air required for complete combustion of 1 kg of fuel. It is also called as chemically correct air-fuel ratio. If the combustion is complete then and then only maximum heat is [...]
In this article we will discuss about:- 1. Rotary Vane Compressor 2. Screw Compressor 3. Roots Blower (Lose Type). Rotary Vane Compressor: Rotary Vane compressor is also called as 'sliding vane compressor'. It consists of a rotor eccentrically housed in the casing. Rotor has several radial slots in it, each housing a spring loaded vane. These vanes are made of [...]