Precision Engineering Industries, India.

Precision Engineering Industries, India.

A Case Study : Epoch HVLS 24-ft Fan By Falco EMotors Inc.
Report No. 041420-04

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2 X

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<35 dBA

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Key Facts


  • Direct Drive PMSM Motor;
  • Lowest Weight;
  • Active Power Factor Corrected;


  • Industrial


  • India.


  1. Precision Engineering Industries in the list of top suppliers of Hand & Allied Tools in India. The supplier company is located in Faridabad, Haryana and Faridabad is one of the Hottest area in India.

  2. Precision engineering Industries Shop Shade is made of steel. Also, the shade of the shop is compact on all sides.

  3. So the ventilation of the air in the shop is not proper. The workers at the machinery in the shop are not comfortable.

  4. In summer conditions, heat stroke and heat stress can affect workers and make them uncomfortable.

  5. To make workers comfortable Precision Engineering industries decided to install HVLS fans in their shop.


  • Epoch 3.0, 24-ft 02 Fans were installed with the following specifications ;
    • Motor: Epoch 3.0;
    • Coverage Area: 30,000 Sq. Ft. (2,787 Sq. m);
    • Speed: 62 RPM;
    • Peak Power: 1.5 kW/2 hp;
  • Epoch 3.0, 24 ft fans are most popular with amazing airflow and airflow efficiency.

Site Survey

A site survey is mandatory before any HVLS fan recommendation. The survey revealed the following dimensions:

  • Total Area: 167.5 Ft X 116.6 Ft = 19,530‬ Sq. ft.
  • Floor to Ceiling Distance: 35 to 40 ft,
  • By a rule of thumb distance/1.5 gives us the approximate fan diameter.
  • In this case, we chose to go with a 24-ft fan.

Site Measurements

Fans and coverage area

Test Reports

Three test reports are collected for each fan installation as follows:

Power Consumption Report

Power consumption report captures the real as well as apparent power. Epoch HVLS fans are the only fans in the world to have active power factor correction and unity power factor. Therefore the Watts (Real Power) and VARs (the apparent power) are almost the same. The power has been captured at 23, 32, 42, 52 and 62 RPM. Power drawn at those speeds are 118, 198, 390, 722, 1050 W respectively. The chart above also shows trend lines generated using Excel for real and apparent power to take into account any measurement errors as fan power consumption can be modeled by well known equations.

Input Current Report

The input current is also measured at 12, 22, 32, 42, 52 and 62 RPM. Input current is recorded as 0.62, 0.87, 1.94, 3.18, and 4.95 A respectively. The input voltage varied from 230 to 240 V during the measurement.

Air Flow Report.

The airflow is measured from the center of the fan and is recorded at every 3-ft distance. Values were recorded upto 30-ft from the center of the fan. The values were respectively, 190, 260, 310, 400, 420, 490, 460, 390, 360, and 335 ft/min at distances of 3,6,9,12,15,18,21, 24, 27, and 30-ft respectively.

Finished Installation

This is the video of the finished installation.