Fan Study
Overview
Industrial fans play a vital role in ventilation, cooling, and process applications, making their performance essential for efficient plant operations. Field performance testing helps evaluate fan efficiency by measuring airflow, pressure, temperature, and electrical power consumption to identify opportunities for energy savings and improved system performance. At Limbaja Energy, we provide Industrial Fan Audit Services in Gujarat for industries across Gujarat and India. Our fan audits include the measurement of airflow, head, temperature on the fan side, and electrical motor kW input on the motor side. Air velocity is accurately measured using an anemometer, and the airflow is calculated by multiplying the air velocity by the inlet area. Our Fan Efficiency Assessment, Industrial Fan Energy Audit, and Ventilation System Energy Audit Services help optimize fan performance, reduce energy consumption, and improve the overall efficiency of industrial ventilation systems.
Formulas
Fan Static Efficiency (η) can be calculated by the formula:
- Fan Static Efficiency (η) = (Volume (m3/s) * ∆p (Total Pressure) mmWC) / (102 * Power Input to Fan Shaft in kW)
Scope of Work
Case Study: Energy conservation Measures : VFD Controlling System Instead Of Damper Controlling At Plant Mill ID Fan
| SN | Parameter | Unit | Value |
|---|---|---|---|
| 1 | Power Consumption of blower | kW | 96.5 |
| 2 | % of throttling at suction valve | % | 50.0 |
| 3 | % of saving Possible | % | 30.0 |
| 4 | Saving power | kW | 28.9 |
| 5 | Opt. Hr/day | Hr | 24.0 |
| 6 | Unit cost Rs | Rs./kWh | 8.10 |
| 7 | Annual operation Day | Day | 300.0 |
| 8 | Annual Power Saving | kWh | 208393.0 |
| 9 | Annual Monetary saving | Rs. | 1687983.5 |
| 10 | Investment | Rs. | Nil |
| 11 | Simple Payback Period | Month | Immediate |
Mill Blower Trial Data
Mill Blower Trial Data
| SN | Parameter | Unit | Regular Running | During Trial |
|---|---|---|---|---|
| 1 | Damper Position | % | 50% Close | 100% Open |
| 2 | Fan Suction Pressure Before Damper | mmWC | 231.2 | 231.2 |
| 3 | Fan Suction Pressure After Damper | mmWC | 788.800 | 286.96 |
| 4 | Fan Discharge Pressure | mmWC | 43.52 | 43.52 |
| 5 | Flow | m3/hr | 30200.0 | 30500 |
| 6 | Power | kW | 86 | 46 |
| 7 | Fan Frequency | Hz | 48.6 | 37 |
| 8 | Whizzer Frequency | Hz | 21 | 21 |
| 9 | Mill Frequency | Hz | 39 | 39 |
Mill Suction Damper 50% Throttling
Mill Suction Damper Full Open
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