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Describe three steps that can be used to identify a material?
Conduct a visual inspection to identify physical properties such as color, texture, and shape. Use simple tests like measuring density, conducting magnetism tests, or assessing thermal conductivity. Employ advanced techniques such as spectroscopy, X-ray diffraction, or chromatography to analyze the material's composition and structure.
What is an emission spectra used for?
An emission spectrum is used to identify elements present in a sample by measuring the specific wavelengths of light emitted when the atoms are excited. This can be helpful in areas such as astronomy, chemistry, and material science for determining the composition of a substance.
What is the thermal conductivity of galvanized sheet?
The thermal conductivity of galvanized sheet metal can vary depending on its composition and thickness, but typically ranges from 15 to 43 W/m·K. This means that it has moderate to high thermal conductivity, allowing heat to transfer easily through the material.
What is Li2SiO3?
Li2SiO3 is lithium metasilicate, a compound composed of lithium, silicon, and oxygen. It is often used in ceramics and as a nuclear material due to its favorable properties such as high thermal stability and low thermal expansion.
Why is hard water not used in a boiler?
Sea water, as from oceans, is salty. If used in a boiler the salt will deposit as scaling, which is a bad thing. It's also more corrosive, so the boiler and all associated pipework will rust out faster.
Where is natural calcined fire clay used?
Natural Cancained clay is used for making refractory bricks and shapes.But it find best and cheap use in the boiler of thermal power plants as a bed material. Because here it does not required any benification or calcination. you have to only to make grains (iron free) of required sizes which is directly used in the boiler of a thermal power plant as a bed material
What material used in boiler tube in indian power plant?
Usually Alloy steel is used, copper and brass are also used as boiler tube materials
What is the use of economiser in boiler?
The economizer is used to raise feedwater temperature up to nearly the temperature of the boiler to avoid thermal shock and improve the boiler's efficiency. Every 11 degrees Fahrenheit increase in feedwater temperature yields a 1% increase in boiler efficiency.
What is the thermal stress equation used to calculate the stress induced in a material due to changes in temperature?
The thermal stress equation used to calculate stress induced in a material due to temperature changes is given by: ET where: thermal stress E Young's modulus of the material coefficient of thermal expansion T change in temperature
What is thermal risistance?
Thermal resistance is a measure of a material's ability to resist the flow of heat through it. It is used to quantify how well a material can insulate against heat transfer. A lower thermal resistance value indicates better thermal insulation properties.
What criterion is used for any metal to be used as coking material?
More Thermal Conductivity
What are refractive materials?
The material which is used in furance; boiler; fuse; regenerators;etc are called refractive materials.
What does thermal waves mean?
Thermal waves refer to the fluctuations in temperature within a material or medium that propagate as waves. These waves are related to changes in the thermal properties of the material, such as thermal conductivity or heat capacity, and can be used in various scientific and engineering applications to measure or analyze thermal characteristics.
What is platen superheater?
it is a low pressure heater used in the boiler system in the thermal power plants to convert the saturated steam into super heated steam.
What is A material that conducts thermal energy as well is a thermal?
A material that can conduct thermal energy as well as be used as a thermal insulator is ceramic. Ceramics have low thermal conductivity, making them good insulators, while some ceramics like Silicon Carbide have good thermal conductivity, making them suitable for use in heat sinks and other thermal management applications.
Why water is only used for produce the steam in boiler?
only water is used in boilers to reduce the cost. and if other liquid like petrochemicals will be used than the cost will be more and there will be the higher risk because if the boiler bursts than it will cause more damage than water boiler.
Why does not use other material instead of steel for concrete work?
Because of the thermal compactablity of the steel the material is used in concrete
