Spiral-plate Heat Exchangers

Description The spiral-plate heat exchanger (SHE) may be one exchanger selec ted primarily on its virtues and not on its initial cost. SHEs offer high reliability and on-line performance in many severely fouling seiwices such as slurries. 

A chart to estimate the costs of ejectors for thermocompression has been developed.Approximate costs of compressors for mechanical vapor recompression also can be found. In addition, these publications contain details of cost estimation for heat exchangers. For more detailed estimation of cost of shell-and-tube exchangers, see Purohit. " Plate-and-frame and spiral-plate heat exchanger costs can be estimated using Kumana. " ... 

Design A thorough article by P. E. Minton of Union Carbide called Designing Spiral-Plate Heat Exchangers, appeared in Chemical Engineering, May 4, 1970. It covers the design in detail. Also an... 

Figure 12. Spiral plate heat exchanger, both fluids with helical flow pattern. Graham Manufacturing Company, Inc.)...

FIGURE 6.37 Schematic diagrams of spiral-plate heat exchangers (a, b) basic construction for two fluids in counterflow, (c) configured for condensation or reboiler service. 

It is improbable that these clearances will all accumulate to either the positive or negative side, so it is customary to compute heat transfer relationships on the basis of average clearances. Refer to Plate and Frame Heat Exchanger, Spiral Plate Heat Exchanger, and U-Tube Heat Exchanger. (Source N. P. Cheremisinoff, Handbook of Chemical Processing Equipment, Butterworth-Heinemann Publishers, U.K., 2000). 

Figure 11-16 Spiral plate heat exchanger. Figure 11-17 Spiral plate heat exchanger.

Minton, P. E., "Design Spiral-Plate Heat Exchangers", Chemical Engineering, May 4,... 

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