How to calculate a vertical heat exchanger supported by a skirt?
Thread Content
There is an existing vertical heat exchanger with a length-to-diameter ratio greater than 5, supported by a skirt. How should SW6 be calculated? Is it to first use a heat exchanger for calculation and then verify it with a tower? How should the tube sheet and heat exchange tubes be considered? How to segment the calculation for towers?
Generally, such heat exchangers do not need to be calculated based on tower principles; typically, they are quite heavy and should be designed with seismic forces in mind. If calculation is indeed necessary, the heat exchange tubes and the mass of the material in use can be converted into packing for tower calculations. The filler density can be calculated by dividing the weight by the volume of that section of the heat exchange tube. This allows for an approximate addition of a particle to calculate the seismic force.
I didn’t finish speaking earlier. As for the verification of the tube sheets and tube ends, I don’t think it’s necessary, because the tube bundle is a very rigid structure; if flange connections are used, attention should be paid to the additional bending moments caused by earthquakes on the flanges. For the others, I don’t think verification is necessary unless the structure is special or extremely tall.