First thanks to Sailoday28 and Prex for helping me solve this problem. As I try to follow the discussion I fail to fully understand a couple of the variables used above. Therefore I would appreciate if you could explain the following variables.
Tw
dt
dx
To Sailoday28
Ref your answer 29 oct 07...
To Trashcanman
I am aware that I will not get the correct answer by ignoring radiation. Since I am trying to solve this in a general manner, very little is known on the surroundings, exept that it is cooler. Let say just say that the heat radiated from the "rod" will be a safety margin.
To...
Let's say that a small a small cylindrical rod with no insulation is welded to a large insulated vessel with temperature x. What is the solution for finding the length of the rod based on a maximum allowed temperature y at the free end of the cylinder? I have decided not to consider radiation of...
Since our scope does not include corrosion control I have to make a guess that it is there to protect the seawater piping system as well as the vessels. Why pay for all this? That is a question to which I do not have the answer.
mshimko,
Since there is a chance for galvanic corrosion, would you recommend using a non-conducting material in the gasket i.e. rubber?
Sjones,
What is your main concern at this temperature? FYI customer plans to use some kind of corrosion inhibitor (chemicals) there is also a 3mmm corrosion...
A flanged Aluminium Bronze valve is connected to a Duplex (22%cr) vessel. Our client has specified the gasket material to be Monel. The media is Seawater. The SW temperature may vary from 15degC to 45degC. Is galvanic corrosion a concern with this configuration?
Valero,
I have done as suggested by PVguy and posted this question in the Boiler and Pressure Vessel Engineering forum ref:
Code requirements for flange mounted equipment?
Anyway thanks for replying. Please find my answers to your questions below.
1. The heater does project into the vessel...
Shmulik,
The function of the vessel is to heat N2 gas. The design temperature is 375degC (707degF). I am not that familiar with the ASME VIII Code, but what is required for the vessel to become an Unfired Steam Bolier? This question might be considered a "long shot", but I thought I'll give it try.
Description
An electrical heater are to be flange mounted on a U-stamped vessel. The vessel is delivered from the fabricator without the heater installed. Therefore the heater will not be included in the certification of the vessel.
Questions
1.Does the Heater need to be U-stamped?
2.If ASME...
Description
An electrical heater are to be flange mounted on a U-stamped vessel. The vessel is delivered from the fabricator without the heater installed. Therefore the heater will not be included in the certification of the vessel.
Questions
1.Does the Heater need to be U-stamped?
2.If ASME...
What is the max recommended design temperatur for Hot Dip Galvanized components (my concern is the surface treatment not the material)? The application is A193 B16 bolts hot dip galv. for corrosion protection.
The Nitrogen gas is heated in catalytic reaction and then used on the shell side of the Heat Exchanger. The maximum content of oxygen at the tube side is 0.5%.
1. I guess the low Oxygen content and the low pressure reduces the effect of SCC?
2. What effect does oxygen content and pressure have...
The temperature on cold side inlet is 20C and the cold side outlet is 140C. The temperature on the hot side is close to 300C.
I guess you mean 625degrees Fahrenheit (329.5 Celcius)?
