Physics Forums » Materials and Chemical Engineering
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Join the expert discussion on Materials and Chemical Engineering topics. Includes topics on the properties of matter and its applications. Metal Production, Fabrication, Distillation, Corrosion.
Physics Forums » Materials and Chemical Engineering
1w ago
Hi!
I have been working with home-made reactor to do ambiant pressure, high temperature pyrolysis experiments that use an induction heating coil wrapped around the outside to heat the entire reactor. The contents are heated indirectly through their contact with the reactor. This worked well for...
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Physics Forums » Materials and Chemical Engineering
3w ago
I’m trying to calculate the system curve of an already existing plant, the complexity lies in having 2 different lines, each with its respective pump
1- A substance contained in a closed tank with a liquid level of 40 ft connected to pump 1.
2- a closed tank of pure water connected to pump 2...
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Physics Forums » Materials and Chemical Engineering
1M ago
First I have seen a few forums dotted about covering this subject already, however I couldn't find exactly what I was looking for so I apologise if its somewhere on here already.
I am trying to calculate the AFR value for pure ethanol.
I am only including oxygen in the category of "air" due to...
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Physics Forums » Materials and Chemical Engineering
1M ago
I’ve been trying to understand what’s the maximum mass flow that can be used in a already existing shell&tube heat exchanger.
The only information i have available is the datasheet of the heat exchanger above mentioned and the fact that we want to increase the hot fluid flow from 30 ton/h to 40...
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Physics Forums » Materials and Chemical Engineering
1M ago
Hello, assuming to keep an aluminum alloy motorcycle frame not in use, still, will the daily temperature variations cause thermal fatigue due to the continuous expansions and retractions or is the force developed by a few degrees of variations not sufficient to create microstructural dislocations ..read more
Physics Forums » Materials and Chemical Engineering
1M ago
Hello,
I am designing a centrifugal heat pump, which compresses air. I'm considering making the impeller from aluminum, probably from 7075, since the stresses rise to about 385 MPa when rotating at high speeds. The input temperature of the air is 85 degrees Celcius and output 125 degrees...
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Physics Forums » Materials and Chemical Engineering
2M ago
Hi,
In our production line we are heating h2o2 in a heater made of Alu 5083 to 150° for the disinfection of plastic bottles. After 6 months we needed to revise and clean our heater due to some sort of "limescale" formation. It only occurs at the beginning of the heater (I guess before...
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Physics Forums » Materials and Chemical Engineering
2M ago
Mumetal is a high magnetic permeability alloy. It is known any kind of mechanical deformation changes its microstructure leading to loss of superior magnetic properties. Annealing of machined parts fabricated from mumetal is standard.
I keep reading in literature, perhaps everyone getting...
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Physics Forums » Materials and Chemical Engineering
2M ago
This CuNiFer alloy pipe is used in a seawater cooling system and is electrical insulted with nearby metals; this prevents galvanic corrosion to occur since there is no contact with other metals. I've seen multiple sources that say CuNiFer is very corrosion resistance.
The pipe is still...
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Physics Forums » Materials and Chemical Engineering
2M ago
Not my issue directly, more a case of relaying the problem, but here goes.
My girlfriend works for a company that makes bioanalytical units, and is part of their validation team in particular. They’ve started running into an issue with a stainless steel solenoid valve where it is, for lack of a...
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