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Midwest HVAC News
Demand Response Feature
Added to the Digi-RTU™ Developed by Bes-Tech, Inc.
 Bes-Tech,
Inc., an energy efficiency technology company headquartered in
Omaha, Nebraska, is proud to announce a Demand Response option for
HVAC rooftop units. This unique Demand Response feature is a
function within Bes-Tech’s APPA award winning Digi-RTU rooftop HVAC
optimization technology. The Demand Response feature accepts the
Demand Response load limit factor signal from any third party’s
Demand Response controller. The Digi-RTU supports a range of load
limiting options: 0 - 100% by modulating the speed of the RTU’s
compressor(s) and supply fan. This provides building owners and
utility companies, flexibility in the DR programs they participate
in and provide. This also makes the installation of the Digi-RTU
eligible for DR utility incentives.
The Digi-RTU is an aftermarket control package designed to optimize
rooftop units, matching space load with the rooftop output. Rooftop
air conditions are the largest percentage of energy cost for
commercial and industrial buildings. Interest in making these units
run more efficiently is significant to building owners and utility
providers. The Digi-RTU has been installed on a variety of buildings
that include: offices, manufacturing, distribution centers, retail,
and government. Benefits of the Digi-RTU are:
➢ Reduce the electricity demand up to 60%
➢ Reduce the electricity consumption up to 60%
➢ Demand Response single enabled
➢ CO2 based demand control
➢ Communicates with BAS systems and stand-alone thermostat
Based on the Pacific Northwest National Laboratory (PNNL1) four
areas of advanced controls for rooftop units, the Digi-RTU is the
only product on the market that addresses each area to maximize
electricity consumption and Demand Reduction. The Digi-RTU
integrates the rooftop’s economizer, modulates the supply fan,
modulates the compressor speed, and regulates indoor air CO2 levels.
By intercepting heating and cooling calls, the Digi-RTU’s patented
technology modulates the compressor and fan speeds to match the
space requirements.
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“The Digi-RTU is
already in a class of its own and the addition of the Demand
Response feature further sets it apart from other HVAC
optimization strategies. Modulation is the key to overall energy
reduction and by managing both the compressor and supply fan the
Digi-RTU is the solution of all climates,” said Bruce Geary,
Vice President at Bes-Tech, Inc.
The Digi-RTU was awarded the American Public Power Association’s
Energy Innovator Award in 2011.
About Bes-Tech
Bes-Tech is a leader in energy efficient building systems
technologies. The company was founded on proven scientific
engineering processes and technologies that reduce peak energy
demand, minimize energy usage, and maximize energy efficiency.
We actively work to lower the carbon footprint of the built
environment.
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