NEWS

– Electrical grid power interruptions, possible at any time, can be catastrophic.

People receiving automated residential medical care can suffer compounding injuries or die, exposing operators to severe legal and public relations consequences.

As data’s role in driving public safety and the economy increases, any degradation in its flow can leave emergency managers/first responders without critical tools and threaten business continuity.

Operators install emergency diesel generators to provide continuous power and avoid these impacts, complying with law and best practice. However, fuel contamination, typically in the forms of water, microbial growth products, and corrosion particles, is emergency power reliability’s enemy.

These can plug generators’ fuel filters, damage engines, and harm fuel systems, causing engine shutdowns at the worst times.

Fortunately, AXI International (AXI) has developed, produced, and deployed intelligent fuel management systems to minimize these events’ likelihood.

Concurrently, increasing real-estate costs and advances in data storage technology have made facility space more valuable.

Accordingly, designers seek to optimize usage in favor of revenue potential.

Specifically on the generator side, commodity-like sales for fast “plug-and-play” installations are also required to keep pace with data center demand.

One tactic used by generator manufacturers to remain competitive in this market is placing tanks and engines within the same footprint.

These belly/base tanks occupy the bottom of the generator enclosure.

Tanks often include perforated baffles to support engines’ mass and allow flow.

MULTI-POINT FLOW: THE PATH TO RELIABILITY

Posted May, 08, 2018 by E.J. Neafsey

Keeping Data in Drive

Electrical grid power interruptions, possible at any time, can be catastrophic.

People receiving automated residential medical care can suffer compounding injuries or die, exposing operators to severe legal and public relations consequences.

As data’s role in driving public safety and the economy increases, any degradation in its flow can leave emergency managers/first responders without critical tools and threaten business continuity.

Operators install emergency diesel generators to provide continuous power and avoid these impacts, complying with law and best practice. However, fuel contamination, typically in the forms of water, microbial growth products, and corrosion particles, is emergency power reliability’s enemy.

These can plug generators’ fuel filters, damage engines, and harm fuel systems, causing engine shutdowns at the worst times.

Fortunately, AXI International (AXI) has developed, produced, and deployed intelligent fuel management systems to minimize these events’ likelihood.

Concurrently, increasing real-estate costs and advances in data storage technology have made facility space more valuable.

Accordingly, designers seek to optimize usage in favor of revenue potential.

Specifically on the generator side, commodity-like sales for fast “plug-and-play” installations are also required to keep pace with data center demand.

One tactic used by generator manufacturers to remain competitive in this market is placing tanks and engines within the same footprint.

These belly/base tanks occupy the bottom of the generator enclosure.

Tanks often include perforated baffles to support engines’ mass and allow flow.

Belly/Base Tank Challenges

While an expedient solution, belly/base tanks represent a major design compromise.

In cylindrical tanks, detection-elusive water bottoms, for example, represent a relatively small volume because it occupies a part of the tank with low cross-sectional areas.

In belly/base tanks, cross-sectional area is approximately equivalent at all levels, permitting high water volumes at extremely low depths.

Given identical tank footprints, this works out to over ten times the volume of the previous cylindrical example.

This provides plenty of habitat for microbes, including species that may induce tank corrosion and consume fuel at the extensive interface.

Additionally, baffles inhibit the free flow essential to optimal fuel polishing with a single supply and return pair.

The flow path between this pair also bypasses two corners, creating potential contaminant buildup zones.

Multi-point Flow Path Solution

AXI’s patent-pending Multi-Point Flow Path (MPFP) system overcomes these challenges by transforming belly/base tanks’ geometric limitations into advantages.

It incorporates a Multi-Point Alternation Controller (MPAC) and a FPS Automated Fuel Polishing System.

The MPFP system equips each segment with a fuel polishing supply and return connection (Fig. 1), the position of each optimized for contaminant removal and tank bottom flow velocity, respectively.

This introduces much of the typical fuel polishing installation model to belly/base tanks and does so for smaller volumes, providing each segment a dedicated maximum-performance polishing loop.

Figure 1 – Cross Sectional Cut of Belly/Base Tank

PLC integration allows operators to manage their tanks to their preferences, using Override or Random mode:

  • In Override mode,the operator can activate any combination of one supply and one return valve.
  • In Random mode, the PLC chooses a supply (suction) and return (discharge) in either Pair or Non-Pair mode during operator-defined periods (Fig. 2 & 3).

In Pair mode, supply and return are within the same segment, expressing a typical yet enhanced fuel polishing installation.

The system polishes fuel one segment at a time.

Figure 2 – MPFP Pair Mode

In Non-Pair mode, supply and return are within different segments, thoroughly polishing with up to 256 unique flow paths in the maximum 16 pair option.

The system polishes fuel using one flow path at a time.

Figure 3 – MPFP Non-Pair Mode

Best of all, the MPFP system is available as a polishing system upgrade, increasing the value of your existing assets.

Set the standard in emergency power reliability – contact AXI to add MPFP to your fuel management system today!