Measuring the energy savings

BFIs will save energy, but the exact saving must be measured. This short guide explains how thus can be done easily.

 How to measure energy savings

Perform a reference measurement – Run the motor with the BFI configured to operate as if it were directly connected to the grid.

Implement the energy-saving measure
A: Operate at a fixed but lower speed.
B: Adjust the motor’s magnetization.
C: Connect sensors to the BFIs and let them control temperature and pressure.
Measure the energy consumption again under the new conditions.
Compare the results from the reference measurement with the energy-saving scenario

Please note: Room and fan size will vary from one engine room to another. Therefore, one fixed setting may not be suitable for your setup. We always recommend running a few tests to fine-tune your solution.




Example of data

A data analysis example showing improved efficiency and reduced energy consumption. The reference measurement represents fans running at full speed, while the results demonstrate how a frequency inverter increases efficiency and lowers energy use. The report can be easily exported to a USB device.

What Beijer Electronics offers



This is included

  • BFI Frequency inverters, P2 series, with sizes selected according to ventilation motor requirements.
  • Includes PLC program for the built-in PLC in BFI inverters.
  • X3 pro/marine HMI, including system configuration and monitoring application.
  • Cable for connection from HMI to BFI
  • Start-up documentation for easy setup
  • Technical support

Tempterature and pressured controlled

  • OPTION Temperature and pressured controlled
  • External temperature and pressure sensors are not included
  • Each BFI includes 2 x 4-20mA inputs

 

What you’ll have to take care of

Your scope

  • Electrical arrangement:
    - IP 55 and IP 66 require only:
    - Motor cabling
    - Supply cabling and cable protection
    - Cable glands for supply and motor cable
  • As-built documentation
  • Testing (FAT/SAT)
  • Commissioning


EcoSmartVent engine room solution

Purchase EcoSmartVent online!

The EcoSmartVent software package for engine room ventilation with full basic functionality can be purchased online in our SmartStore, where you will also find in-depth technical information.

Link to SmartStore