What does the specification BIU900-4.0/4.0-215-6.0/25-2I, with B=200, mean?
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This post was last edited by hlq_118 on 2010-3-2 at 11:14; the specifications are BIU900-4.0/4.0-215-6.0/25-2I, with B=200, and it’s a single bow plate. What does B=200 mean?
A U-tube heat exchanger with a nominal diameter of 900 mm, a nominal pressure of 4.0 MPa, a heat exchange area of 215 m2, a tube length of 6 m, an outer diameter of the tubes of 25 mm, and 2 tube passes. B might be the distance from the baffle to the shell
This post was last edited by vic001 on 2010-3-2 22:12. The specifications are BIU900-4.0/4.0-215-6.0/25-2I, with B=200; it is a U-tube heat exchanger featuring an elliptical head tube box. The nominal diameter of the cylinder is 900, with a design pressure of 4.0 MPa for both the tubes and the shell; the heat exchange area is 215 square meters. The length of the heat exchange tube is 6 meters, and its outer diameter is 25 millimeters. 2 pipe banks, baffle spacing of 200mm. (Process designers often specify the baffle spacing in this way; it’s common sense.)
There is one unit with the specifications BIU900-4.0/4.0-215-6.0/25-2I, B=350, but this specification of 350 isn’t listed in the standards!
The spacing between baffle plates should be calculated based on the flow rate, velocity, and properties of the material. According to regulation 151, this spacing must be at least 1/5 of the inner diameter of the shell, and also at least 50 mm, depending on the maximum inner diameter of the shell. I don’t think it’s necessary to standardize baffles; specific calculations based on individual cases are required to determine them.
The specifications are BIU900-4.0/4.0-215-6.0/25-2I, with B=200, and it is a single bow plate. What does B=200 mean? To add to what was said earlier, the “I” refers to the primary tube bank specified in Regulation 151. “B=200” denotes the spacing between baffle plates; that’s indeed how it’s used, and it might be considered an unwritten rule.
The answer upstairs was very detailed; I’ve learned from it
Refer to the JB/T4717-92 standard
It seems that the main parameters of the entire container can be found in JB/T4717-92