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Northeast HVAC
News
Green Equipment Options Now Has
Twisted Green Ideas For Maximizing Geothermal Drilling.
New geothermal piping product tackles space and cost issues
of geothermal.
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The two major hurdles for a residential or commercial geothermal
HVAC installation are cost and loop drilling space. One
interesting product called the Twister (patent pending) is a
twisted pipe system created for vertical bore heat exchanger
technology. To lower the costs of geothermal HVAC installations
and increase efficiency this new product allows the concurrent
installation of four loops in a single vertical bore. Twister
also takes greater advantage of heat transfer and heat capacity
of the soil. It means less cost for the residential or
commercial geothermal installation.
The Twister’s four loops in a single bore can also reduce the
depth of the vertical boreholes; this is helpful in some of the
more densely populated areas. An example of a geothermal
installation could call for 10 kW of thermal capacity or three
tons which can mean three 300 foot vertical boreholes. As in any
geothermal job drilling the boreholes make up a substantial
portion of the job costs. Reduced costs mean increased profit or
ability to lower costs for the contractor that they can pass
onto the consumer.
The Bergen County, NJ firm, Agreenability, the innovator of
TWISTER (Twisted Pipe – Patent pending) has chosen Green
Equipment Options, Inc. to be their west coast distributor for
products. Their focus is to attack the cost and space issues
associated with geothermal installations and components for
geothermal heat pumps.
Story
continues below ↓
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Here comes the
Twister
Rob Jensen, President and CEO of Agreenability, explains that
Antonio Poccia, from Perfection HVAC installation company swears by
TWISTER and is Agreenabilities biggest fan. Perfection Contracting
consists of HVAC installation, plumbing, and service and repair, but
his main business is geothermal, so they are always on the lookout
for savings when it comes to geothermal installations. One example,
at a "Non" residence in Paramus, N.J., Perfection installed a 5-ton
geothermal system retrofit where the crew drilled only two 300-ft.
bores.
There is a potential to reduce drilling costs as much as 30% with
TWISTER. The lower the installation costs the faster the payback.
Development of TWISTER was conducted over 2 ½ years. Studies were
done in an in-situ borehole test to evaluate and compare the thermal
responses of the TWISTER design and a standard 1¼" HDPE single loop
well completion.
TWISTER uses ¾" ASTM D3035/D3350 Cell Classification 445574C SDR 11
or 13.5 HDPE (IGSHPA Requirement) pipe spirally wound around a
central 2" pipe used to guide the Tremie pipe. It is delivered on
reels or in coils, and factory prepared u-bend fittings means that
Twisted pipe heat exchangers can be slipped down the hole like a
conventional u-bend loop. As a result, there is no extra fieldwork
to install Twisted pipe systems. Twisted pipe geothermal heat
exchangers uses pipe that conforms to ASTM D3035 (sizing) and meets
or exceeds material requirements of ASTM D3350 with a Cell
Classification of 445574C; meeting or exceeding IGSHPA manuals
requirements.
Agreenability is a "green" company headquartered at the Business
Accelerator at Bergen Community College in New Jersey.
Green Equipment Options, Inc. is a geothermal wholesaler in the
northern California area and the TWISTED pipe is a great option for
installation companies to use to reduce the drilling costs.
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