Brochure

Manifold
compressors
Enhancing part-load efficiency
with staged modulation
The number of compressors running
at any one time can be adapted to
building occupancy and demand
levels. This improves cooling efficiency
and reduces energy use. Energy
Savings on running costs
with the widest portfolio for
superior part-load efficiency
Reduce CO
2
emissions and energy consumption to get to the energy efficiency standards:
Danfoss provides three options to help OEM customers meet the challenge
Superior part-load efficiency
with Danfoss IDVs
A/W Chillers with 2 trio circuits 3x25TR
Reduced yearly power demand (kWh)
170.000
150.000
130.000
110.000
90.000
70.000
385 kW unit
Europe
150 TR unit
North America
DSH Scrolls with IDVsScrolls without IDVs
-6%
-4%
performance is further enhanced with
Danfoss IDV technology. In other terms,
the benefits for the running costs of this
type of system include:
• Up to 12 steps of capacity modulation
for precise load-matching capabilities
(trio in 4 circuits)
• high part-load / seasonal efficiency
Our even and uneven manifold
configurations up to 150TR in one
circuit offer wide staged capacity
modulation. For example, a system
with six manifold compressors in two
circuits offers capacity modulation
from 17% to 100%. This enables higher
part-load efficiency compared to screw
technology in a system of equivalent
capacity. Danfoss IDV technology,
implemented in the 7.5-50 ton range
of the fixed-speed Danfoss Scrolls DSH
and Danfoss inverter Scrolls, further
enhances energy efficiency under part
load conditions.
Yearly Power demand in kWh
DSH DSH