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bulk density this is represented by the weight per unit volume of the refractory of gcm3. this volume includes the volume of the pores space
properties of good refractory material the requirements of refractories for different furnaces and heating places depend on the working conditions.
spelling resistance the breaking or cracking or peeling off the refractory is known as spelling. a good refractory must show a good resistance to
heat capacity heat capacity of furnace depend on1 thermal conductivity 2 specific heat and 3 specific gravity of
porosity the property of the refractory brick is the ratio of its pore volume to the total volume. the refractory material with high porosity is not
q. how can you measure the refractories and refractoriness under load of a refractory material?
emulsification emulsification can be defined as the property of oils to get intimately mixed with water easily. emulsions can be oil in water
saponification number saponification number of oil is the number of milligram of potassium hydroxide required to saponify 1 g of oil. mineral oils
pour point just as flashpoint when temperature is further lowered below cloud point of certain temperature oil becomes semi-solid and losses its flow
flash point flash point is lowest temperature at which the lubricant oil gives off enough vapours that is ignited for a moment.significance
q. discuss the significance of viscosity in lubricating oil. how the viscosity is determined by redwood
q. write short notes on cloud and pour point of lubricant.ans. cloud and pour point of lubricant when the temperature is lowered up to a
q. define flash and fire points and its determination.
q. what are the functions of a lubricant? describe the various types of
q. what are lubricants? explain properties of lubricating oil.ans. lubricants the metal to metal frictional resistance can be minimized by using
i have weekly test and online homework. how much is it to solve one question and do you help with online
Chemistry, explain how dissolving the group 4 carbonate precipitate with 6m CH3COOH,followed by the addition of extra acetic acid, establishes a buffer with a ph of approximately 5.
Chemical calculations, You are asked to prepare a solution for the lab of sulfuric acid (0.10 mol/L) from concentrated sulfuric acid (96%) with a relative specific gravity of 1.858 calculate a)the
Can you justify which is the best choice of thermometric fluid for a glass-liquid thermometer? This is best achieved by starting with a consideration of how you would expect the liquid to expand
Molecular weight of the solvent and air are 70 and 29 kg/kmol, correspondingly. Find out other data in the book and make suppositions which make sense as it applies to respective problem.
A mixture of methanol and water is to be separated in a new separation unit and you are needed to give a report detailing the design and costing of a distillation column with specifications illustra
Our packed bed reactor conducts the gas phase reaction A → R at P = 10 atm and T = 336oC and gives 90% conversion using a feed that consists of pure A.
The task for this assignment is to solve for the particle diameter (dP), in μm, at different terminal gas velocities (ut) between 0 and 1 m/s. The solution should be solved in Microsoft Excel usi
Calculate the fugacity of liquid acetone at 110 0C and 275 bar. At 110 0C the vapor pressure of acetone is 4.360 bar and the molar volume of saturated liquid acetone is 73 cm3/mole.
Draw the expected DSC graph for a semicrystalline polymer heated from 25-300°C at 5°C/min with the following properties: % crystallinty of initial sample = 25%, Heat capacity of the polymer ge