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Spelling resistance: 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.
petrolium
heat exchanger would be difficult to model
Bulk density: This is represented by the weight per unit volume of the refractory of (g/cm 3 ). This volume includes the volume of the pores space, therefore, higher the bulk dens
Free Electron theory of metals This theory tells that, metals conduct electricity due to the presence of free electrons in it. The outermost shells of metal atoms will be loose
A shell-and-tube Heat exchanger with one shell exceed and two tube passes si to be designed to condense 3900 kg/hr of steam at 1 atm. Steam may be suppose to enter the shell side a
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.
Applications of permanent magnets a - Applications based on attraction or repulsion forces b - Applications based on Faraday's induction law c- Application based on Lor
nerve cell reproduces
Materials used for DC applications are: Iron and low-carbon steels (maximum carbon 0.05 %) • Iron-Nickel alloys (Permalloy) • Iron-Cobalt alloy (Permendur)
Hardness is 160 ppm and flow rate is 40 m3/hr ,I want to know the amount resin quantity required.Please give me a solution with details.
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