Banki-Mitchell Cross Flow Turbine Design Worksheet

[sailawayrb]

Thought that there might be others that may one day want to build one of these (illustrative photo attached) too.  The attached Excel design worksheet that I created for this project works for both English and Metric units and pretty much calculates everything one requires to design and build a cross flow turbine.  It also validates the design is acceptable and provides warnings as required.  I also attached one of the key references used to develop this worksheet.  A well crafted design/build should produce a turbine with about 75-80% efficiency...and across a wide range of flow rate.  Coupling a cross flow turbine to a low RPM, high efficiency (+90%) PMG (e.g., like those used for wind turbines), provides a reliable, low maintenance means of generating power 24/7/365.

Cheers,
Bob B.

[sailawayrb]

Updated an improved Excel spreadsheet.

Cheers,
Bob B.