Our first rating systems were manual, using log/log, paper systems, which evolved through the mainframe era, the personal computer era, and finally have evolved into an internet service.
SPIRALX has collected over 75 years of empirical data as well as thousands of specification sheets from numerous vendors, for natural gas, engine jacket water, ethylene glycol, lube oil, compressed air, amine, steam, as well as for several other fluids prevalent in the oil and gas industry. Expertise ranges from 18" to 168" diameter fan units cooling engine jacket waters, natural gas, lube oils, and compressed air. Manufacturing expertise includes A.S.M.E. Section XIII box headers, as well as slab headers. The rating programs are designed to include 5/8" to 1 1/2" O.D. tubing with aluminum wrapped on fins that are either smooth, or slit, such as those used by Air X Changers, ACE, and Air X Hemphill. Tube gauges range between 8 and 20 bwg.
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