Civil Engineering Reference
In-Depth Information
A lower-cost design option is to have two compressors, each capable of
providing 50% to 70% of the total required flow. In this scenario, fleets
typically select two identical compressors because they will have the same
maintenance procedures and spare parts. This option allows the main
compressor to run until the demand for fuel requires the second compressor to
start.
Compressor Enclosures
Photo from Marathon Technical Services, NREL 30345.
This CNG station was built with three storage vessels and has space on the concrete
slab to add more storage vessels in the future.
Some compressors are protected from inclement weather to prevent
premature wear and reliability issues. A shelter can be constructed around the
compressor, or the compressor can be enclosed in a box. Canopy shelters
provide ample space to perform maintenance on the compressor but may not
provide full protection from rain and snow. Enclosures are transportable,
require less space than a canopy, provide good weather protection, and reduce
compressor noise. However, there is very little room to perform maintenance
on enclosed compressors. Basic compressor enclosures add approximately
10% to the cost of the compressor.
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