Extend service life of existing structures and enhance performance of new ones.
FeBTUcell
Analysis, Design, Foundations
Feng Value Engineering Chart
Analysis, Design and QA Services
Analysis, Design and QA Services
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Footprint Engineering Inc. (Feng) is founded with the principal objective to decarbonize the built environment with a special focus on foundations, rehabilitation, and geotechnical.
The FeBTUcell is a unique assembly that carries potable water and operates as a Geoexchange.
The FeBTUcell is a non-load bearing structural round steel section which is sealed to the surrounding ground and installed by the piling/drilling foundation Industry. In certain situations, it can be used as a FeBTUpile which would be load bearing.
The FeBTUcell is delivered as a sealed round vessel by the foundation industry contractor and thus comes in 4 cell types: a Helical, a Micropile, a Driven Pile, and a Caisson Pre Drill pile.
Care to avoid air ensures no rust internally and pipe thickness provides many years of useful life even in corrosive soils. Since the FeBTUcell efficiency is such that a high water table is ideal, the outside of this assembly is typically under water for most of its length. Maintenance access to review external conditions at the cell head is a matter of good designer detailing.
The FeBTUcell, by Footprint Engineering Inc. (Canada), typically operates as Geoexchange in both cooling (returning warm water) and heating (returning colder water) from a heat exchanger system installed within a heated building (as per standard Geoexchange systems completed by water well drillers). A FeBTUcell program algorithm creates smart wells that turn on and off as well as vary flow rates (CFM) of the potable water in and out of the cell.
The FeBTUcell is highly conductive and is used, ideally, in areas of high water tables to increase Geoexchange efficiency, and also in its use as smart wells to avoid ground freezing and ground heating.
Typically when installed properly in 20 feet (6M) of water table, to a total depth of 60 feet (18M), the water volume will result in a COP of 5-15 under low friction/low flow 1.5 inch insulated piping. This will provide economical cost with high installation productivity rates, allowing for better project schedules and less need for mud drilling.
In high water table, a 60 ft. FeBTUcell installed by a foundation contractor can well outperform the COP of a 400 ft. deep Geoexchange over time.
Martin Halliwell, P. Eng.
President
Martin Halliwell, P. Eng.
President
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