By: Murray Nottle

Murray Nottle — Thu, 25 Aug 2016 02:56:57 +0000

Cascade is the least efficient method of sequencing compressors on their own pressure settings.
Centred is a better approach.
For systems without a variable capacity ( VSD or variable geometry) compressor, any sequence should have the smallest compressor trimming the system. This is the most efficient, maximises the life and minimises the maintenance costs on bigger compressors.
For systems with 3-4 compressors on line, it can be more efficient for the system to have the smallest machine modulating rather than having it cycling load/unload. This is because it minimise the average pressure on the fully loaded machines ( which would be higher if the trim machine was cycling load/unload).

By: How do I control multiple compressors, Part 1?

How do I control multiple compressors, Part 1? — Wed, 24 Aug 2016 15:07:25 +0000

[…] This is a simple question with a complicated answer. It depends on the type of compressors you have and what your goals are in terms of energy efficiency and pressure control. This first blog post deals with small reciprocating compressors; as for the control of screw compressors, we will save for part 2. […]

Comments on: How do I control multiple compressors, Part 2?

By: Murray Nottle

By: How do I control multiple compressors, Part 1?