ENERGY CONSERVATION

COMPRESSED AIR AUDITS

Embarking on a journey toward energy savings begins with embracing simple, cost-effective solutions. More often than not, these straightforward approaches provide substantial returns on your energy-saving investments.

It’s common for companies to gravitate towards high-tech solutions, overlooking simpler, less costly alternatives, only to find the return on investment (ROI) less than satisfying.

Here’s a breakdown of the analysis levels we offer:

System Review (1 to 2 days):

  • Engage with facility personnel to pinpoint issues, challenges, and areas of concern.
  • Collect data on compressor models, control methods, and their locations within the facility.
  • Review hours of operation, energy costs (demand, peak, and off-peak), current discharge pressure, and minimum required system pressure.
  • Log data on compressors and pressures to establish a baseline of system demand dynamics.
  • Deliver a comprehensive report on findings.

System Assessment (2 to 3 days):

  • Includes all components of a System Review.
  • Conduct a walk-through and evaluation of demand-side issues such as:
    • High volume users in inappropriate applications.
    • Areas sensitive to low pressure.
    • Air leaks.
  • Provide a detailed report on findings.

System Audit (3 to 7 days):

  • Incorporates all elements listed in System Review and System Assessment.
  • Data log compressors, monitor pressure, and when feasible, airflow throughout the system while analyzing complete system dynamics.
  • Evaluate compressor control set-points, list all drying & filtering equipment by size, type, and location.
  • Assess dryer load factors, inlet and outlet pressure, total pressure drop, and fluctuations.
  • Catalog Receivers — size, location, dry or wet, primary or secondary pressures.
  • Detail Condensate Drains — listing all by type and location, noting bypasses and ease of maintenance check.
  • Examine the distribution system, including piping layout, size & type, whether looped or branched.
  • Quantify air-consuming equipment, noting pressure & flow requirements.
  • Identify energy reduction opportunities and system improvement benefits.
  • Submit a comprehensive written report of findings and recommendations.

A Word on “Free” Audits:

Occasionally, a compressed air salesperson might offer a free audit, employing data loggers on your compressors, and then presenting a report showcasing significant energy savings potential with a Variable Speed Drive (VSD) compressor.

However, tread with caution. These so-called free audits often exaggerate savings and serve as a sales tool for promoting VSD Compressors. Their “free” nature is subsidized by the potential sale of a VSD compressor. If offered a free audit, challenge them to provide a guarantee on the projected savings.

Remember, the value of what you receive is often reflected in what you pay for it!

COMPRESSED AIR METER: A Gateway to Savings

Monitoring is the first step towards conservation. This principle applies seamlessly to your utilities like gas, water, and electricity, each of which you measure using meters. So, why should compressed air, a vital utility, be any different? Especially considering that it takes 8 units of electrical energy to create a single unit of compressed air. Now, with a modest investment under a thousand dollars, you can keep tabs on your compressed air usage!

Did you know? Up to 25-35% of energy load is expended during idle runs without producing any air. This statistic highlights the potential savings that lie within your grasp.

Decoding Energy Costs:

Understanding your annual electricity costs is fairly straightforward with this simple formula:

Annual Electricity Cost =
bhp×0.746×hours×cost÷motor 

Example:
Let’s consider a 200 hp compressor with a 95% efficient motor, operating 4160 hours per year at an electricity cost of $0.10/kWh.

200 \times 0.746 \times 4160 \times 0.10 \div 0.95 = $65,334 \text{ per year}

With a compressed air meter in place, you’re not just measuring usage; you’re paving a path towards significant energy savings. Take the helm of your utility management today by monitoring your compressed air—the results might just blow you away!

Energy