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Thermal spelling: The breaking or cracking or peeling off the refractory is known as spelling. A good refractory must show a good resistance to thermal spelling. Thermal spelling can be decreased by minimizing the development of internal stress by:
(1) Using refractory with high porosity, good thermal conductivity and low coefficient of expansion.
(2) Avoiding sudden temperature changes.
(3) Proper furnace design
Colebrook equation is used to find a friction factor, f , in a pipe flow as given by: where ? and Re are the roughness ratio and Reynolds number respectively. Considering
1. Wastewater leaving the ACME cheese factory must be neutralized to a pH between 6.8 and 7.2. Citric acid is available to decrease pH and sodium hydroxide is used to increase pH.
Location and layout : Note the location of the lab with respect to the rest of the building. Is the location satisfactory for efficient functioning? You can study the layout well
PROCEDURE : Visit any two labs of your choice (Botany/Zoology/Physics/Chemistry) of your study centre and consult the lab technician or senior laboratory supporting staff and com
concequence of sludge and slag formation in boiler
Q. What are lubricants? Explain properties of lubricating oil. Ans. Lubricants: The metal to metal frictional resistance can be minimized by using certain suitable substanc
MECHANICAL design for evaporator
Identify a major process equipment or operation in your work environment which has the highest risk and develop a detailed report on 1) process hazard analysis (PHA) and 2) HZOP to
Distinguish between intrinsic and extrinsic semiconductor. In intrinsic semiconductors, the conduction is because of the intrinsic processes characteristics of the crystal, wit
Formulas for determining temporary and permanent hardness
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