Heat exchange area of tubular heat exchangers
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1. Temperature rise rate: The temperature is raised from 150 degrees to 168 degrees within 25 minutes.2. Black liquor flow rate: 20.52 cubic meters per minute; the black liquor pump also has a flow rate of 20.52 cubic meters per minute, with a head of 25 meters.
3. Brief description of the medium’s properties: The density of the medium is 1.14 kilograms per cubic meter, and its pH value is 11.8.
4. Steam temperature: 198 degrees at 0.8 MPa. How can the heat exchange area be determined? I would appreciate guidance from those with expertise; the installation is vertical
Before deciding on which type of heat exchanger to use, the owner should first conduct a process calculation for the heat exchange equipment. Common types include shell-and-tube, double-pipe, and plate types; these can be calculated and compared to determine the most suitable one. Relevant books explain how to carry out these calculations; doing them manually is quite troublesome. Design institutes and those working in process development generally use heat transfer calculation software for this purpose. You can go and consult Teacher Wiseboy. @wiseboy
Shell and tube, fixed tube sheet, vertical
This post was last edited by Gu Tongjiu on 2015-6-16 at 15:25. Is the ‘night’ referred to by the original poster made from straw pulp or wood pulp? But no matter what the source of the darkness, it is necessary to avoid blockages caused by scarring at this workstation. In contrast, tubular heat exchangers have always been the most widely used. However, a few days ago some users in China adopted fully welded plate heat exchangers; such applications are not yet common, so their performance is unknown. As for the heat exchange area, the thermal conductivity, specific heat, and viscosity – in addition to density – are required to calculate it; this is also why I asked you at the beginning whether it was grass pulp or wood pulp.
Teacher Gu, they just said that the viscosity is relatively high