Assuming that the solution depth would never go below 4 feet, this coil would function properly. If the installation had to be along the 3-ft wall, a coil with 13.7 sq ft of surface area and dimensions of 36.5 wide by 24 inches long (Table V) could be used. The coil would be installed along the 10-ft wall of the tank. It, too, has slightly more than the required 12.06 sq ft.Īlthough both coils will fit,we selected the 13.7-sq-ft coil which offers the best combination of performance and economy. Moving further down the chart you find a coil of 13.7 sq ft with a width of 12.5 inches and a length of 72 inches. Using data found in Table V, you can determine that a coil width of 18.5 inches and a length of 48 inches provides 13.2 sq ft of surface area. In sizing heat transfer coils it is important to select the configuration with the smallest width and longest length compatible with tank size to provide the best heat distribution.
Considering each possibility, the coil would need to be sized to fit within an area that is 3 × 4 ft or one that is 10 × 4 ft. For this example, the tank walls are 3-ft wide and 10-ft long, and the solution is 4-ft deep. Before determining the length and width of the coil, measure the length of the tank wall and the solution depth.
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