Energy modeling software has been
used to compare INVERTER-driven VRF split-systems with other types
of systems, applying the design conditions for several major U.S.
cities. The outcome? VRF systems were consistently 25% or more
efficient than traditional systems.
Most fixed-speed compressors in
traditional HVAC systems only operate at 0% and 100%; in other
words, fixed-speed compressors are either off or on, wasting energy
when partial-load conditions prevail. And even if you have a
traditional system with 2 or 3 stages, it doesn't compare to the
full-range variable capacity of the inverter-driven system that
fully supports part-load operation.
In comparison, INVERTER compressors
ramp up quickly, providing the energy necessary to achieve the
cooling or heating demand of the zone. Then, working in tandem with
system controls and sensors, the INVERTER compressor varies its
speed to maintain the desired comfort level. Thus, the system
performs at only the minimum energy levels necessary and does not
waste electricity when partial-load conditions are present, which
is 97% of the time in most locations.
The industry is beginning to
recognize part-load operations-part-load systems are now being
rated with a new procedure yielding an Integrated Energy Efficiency
Ration (IEER) rating. This is a great improvement over the IPLV
(Integrated Part Load Value) method. To obtain IEER ratings, the
systems are tested at four different capacity levels and outdoor
temperature conditions to provide a very accurate part-load
measure. IEER will be the gold standard for part-load systems in
the near future, and Mitsubishi Electric Cooling & Heating VRF
systems, with the INVERTER technology, are designed to be among the
best.
Mitsubishi Electric Cooling &
Heating VRF and smaller split systems also save energy through
zoning capabilities; INVERTER-driven VRF systems can be sized and
designed to adjust for a building's solar gain and the changing
seasons. And certain VRF systems have the ability to simultaneously
operate in cooling and heating-using the building's own environment
to save energy. These systems, also called heat recovery systems,
use a branch circuit (BC) controller to control energy. The BC
controller can remove energy from one zone that doesn't need it,
and apply it to a different zone that does. The BC controller
performs all the work, bypassing the compressor unit and saving
electricity. Click on the "Zoned Comfort" link for more
information.
Energy Efficient HVAC Design
Energy modeling software has been
used to compare INVERTER-driven VRF split-systems with other types
of systems, applying the design conditions for several major U.S.
cities. The outcome? VRF systems were consistently 25% or more
efficient than traditional systems.
Most fixed-speed compressors in
traditional HVAC systems only operate at 0% and 100%; in other
words, fixed-speed compressors are either off or on, wasting energy
when partial-load conditions prevail. And even if you have a
traditional system with 2 or 3 stages, it doesn't compare to the
full-range variable capacity of the inverter-driven system that
fully supports part-load operation.
In comparison, INVERTER compressors
ramp up quickly, providing the energy necessary to achieve the
cooling or heating demand of the zone. Then, working in tandem with
system controls and sensors, the INVERTER compressor varies its
speed to maintain the desired comfort level. Thus, the system
performs at only the minimum energy levels necessary and does not
waste electricity when partial-load conditions are present, which
is 97% of the time in most locations.
The industry is beginning to
recognize part-load operations-part-load systems are now being
rated with a new procedure yielding an Integrated Energy Efficiency
Ration (IEER) rating. This is a great improvement over the IPLV
(Integrated Part Load Value) method. To obtain IEER ratings, the
systems are tested at four different capacity levels and outdoor
temperature conditions to provide a very accurate part-load
measure. IEER will be the gold standard for part-load systems in
the near future, and Mitsubishi Electric Cooling & Heating VRF
systems, with the INVERTER technology, are designed to be among the
best.
Mitsubishi Electric Cooling &
Heating VRF and smaller split systems also save energy through
zoning capabilities; INVERTER-driven VRF systems can be sized and
designed to adjust for a building's solar gain and the changing
seasons. And certain VRF systems have the ability to simultaneously
operate in cooling and heating-using the building's own environment
to save energy. These systems, also called heat recovery systems,
use a branch circuit (BC) controller to control energy. The BC
controller can remove energy from one zone that doesn't need it,
and apply it to a different zone that does. The BC controller
performs all the work, bypassing the compressor unit and saving
electricity. Click on the "Zoned Comfort" link for more
information.
