Page 41 - VSD_Brochure_31102023

HVAC DRIVES

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Premier HVAC control
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ABB HVAC drives are ideal for
all your HVAC applications,
such as air-handling units, 3
chillers, and cooling towers. 2
They are suitable for use in a
wide range of facilities from
residential and commercial
buildings to hospitals, data
centres, airports and tunnels.
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1 Cooling tower 2 Chiller 4 Chilled and hot water 6 Air handling unit
circulator pumps
Cools down the condenser Chills water or other • Mechanical resonance
water. liquid to cool down and speeds can be avoided. Circulate water (or other liquid) between Supplies, mixes, cleans, humidifies/
• The drive controls the speed of dehumidify the indoor air. • Maximum speed is not heating coil and boiler or cooling coil and dehumidifies, heats/cools air.
multiple fans simultaneously to • The drive controls the speed limited by nominal supply chiller. • Drives can be used to:
achieve high energy savings, of the compressor for better frequency. • The cooling and heating loads vary a lot – Control the speed of supply and return
while optimising the installation energy efficiency. • Less stress to supply over time. Speed controlled circulator fans
cost. • By-pass valves can be network as high inrush pumps make sure that an adequate – Eliminate mechanical stress
avoided currents can be avoided amount of heating or cooling is distributed – Avoid fan resonance
• Less mechanical stress as with VSD controlled start in the building. – Control the speed and efficiency of the
there are less starts and optimising the installation • Soft start and stop of the pump reduces rotary heat exchangers
stops, and they are soft. cost. hydraulic stress on pipelines and valves. – Control the dampers
– Monitor AHU condition including filter
clogging, fan belts and heating coil
freeze
3 Condenser water pump 5 Boiler
• ABB HVAC drives’ override mode secures
Circulates water between the cooling tower and the chiller. Heats up the water for building heating/ drive operation in case of fire.
• Energy savings can be achieved with variable frequency drives that adjust pump domestic hot water supply.
speed to the cooling load. • The drive controls the burner fan to adjust
the amount of combustion air to the
heating load.

40 | Variable Speed Drives Variable Speed Drives | 41
Variable Speed Drives | 41
40 | Variable Speed Drives