The purpose of testing was to make a comparison of power consumption between the range of different manufacturer air pumps models listed in the attached report. These pumps are typically on 24hrs a day aerating your sewage treatment plant or tank so any change in energy efficiency soon adds up.
This compressor testing was done on the “100” rated series from each manufacturer, i.e. rated at 100 litres per minute at the rated depth for each blower. The achieved airflow from each compressor does vary so this efficiency data should very much be taken in the context of the other requirements, for example a 100 blower from one company may produce as much throughput at your required depth as an 80 blower from a different company.
Please feel free to get in touch if you need a hand working out what is right for your tank aeration.
The septic tank / sewage treatment system air compressors listed were tested for power consumption under normal operating conditions with the air outlet restricted to produce a 100mbar pressure at the air outlet. Power consumption measurements were made at both 230V and 240V, from cold and again when hot after the pumps had been operated to achieve steady state temperature as representative of continuous usage.
The highest power consumption results were achieved when the pumps were hot at 240V. The 100mbar pressure was achieved using a manually adjusted valve and pressure measured using the client supplied pressure gauge KI1.6 which was verified against laboratory pressure gauge N715.
For the purpose for comparison, the results from the 240V testing are considered to be the most representative of the mains supply in the United Kingdom.
Measured power consumption at 240V in Watts (W) with 100mbar air outlet pressure restriction
It is worth noting that the rated power usage for the air compressors was in all instances less than the actual power consumption, up to 23% higher in one instance.