Monitoring Dryer Operation; Notes On Specific Operating Situations - Parker Zander WVM Series Operating Manual

Monitoring dryer operation

Notes on specific operating situations

Parallel operation of several plants
The standard configuration comprises one compressor and one dryer. Please
contact the manufacturer if you plan a plant differing from this configuration.
Part-load dryer operation
The dryer provides optimum performance at high loads. This is the case if the
operating parameters match or slightly fall below the specified values.
Dryer performance can degrade if the dryer often operates at part-load. Dryer
performance increases as soon as the load is raised.
Part-load operation can occur

due to too low flow rates (< 30 % of rated value),

by operating the plant with predried air (i.e. the relative humidity of supply
compressed air is below 30% RH),

due to an operating pressure that is higher than the rated pressure,

due to a compressed air temperature that is much lower than the rated
temperature,

if several of the above conditions apply.
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