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Analysis of the causes of large power consumption of aerator
As a key equipment in aquaculture, the energy consumption cost of aerators often accounts for 20% -30% of the total cost of aquaculture. Many farmers report that electricity bills remain high, which is usually related to factors such as improper equipment selection, unreasonable operation mode, and inadequate maintenance. To reduce energy consumption, it is first necessary to understand the real reason why aerators consume electricity.
Common types of aerators include impeller type, waterwheel type, jet type, and microporous aerator type, and their power and aerating efficiency vary. For example, a 1.5kW impeller type aerator consumes about 1.5 degrees of electricity per hour. If it runs for 8 hours a day, it is 12 degrees of electricity a day, 360 degrees a month, which is a lot of money a year. But through scientific management, the electricity bill can be reduced by 30% -50%.
5 ways to reduce the energy consumption cost of aerators
1. Precise selection: match power on demand
Many farmers tend to choose high-power aerators for insurance, but this will cause waste. The correct approach is to choose according to pond area, water depth, breeding density and dissolved oxygen demand. Generally, it is recommended that each kilowatt of aerobic capacity cover 1-2 mu of water surface, but you need to consult a professional for details.
For example, for a 5-acre shrimp pond, if the breeding density is medium, a 3kW aerator can be used to meet the demand. If 5kW is used, not only will the initial investment be high, but the daily electricity bill will also increase by about 40%. Therefore, when selecting a model, be sure to calculate the maximum oxygen demand and choose the appropriate power.
2. Optimize running time: avoid peak electricity prices
Many areas implement peak-to-valley electricity prices, with high electricity prices during the day and low electricity prices at night. Oxygenators can be arranged to operate at night or during low electricity prices as much as possible to reduce electricity costs. At the same time, the running time should be flexibly adjusted according to factors such as weather, water temperature, and breeding density.
For example, in the hot summer weather, the dissolved oxygen is low during the day, and the aerator needs to be turned on more; while in the cool weather or the later stage of breeding, the running time can be reduced. Using a timer or an intelligent control system, the switch can be precisely controlled to avoid unnecessary waste.
3. Regular maintenance: maintain optimum condition
The aging of equipment and the accumulation of dirt will reduce the efficiency of oxygenation, resulting in increased energy consumption. For example, after the impeller is covered with scale, the agitation capacity decreases, the motor load increases, and the power consumption increases. Therefore, it is essential to regularly clean the impeller, check the bearings, lubricate the motor, and replace the worn parts.
It is recommended to check it every half month and maintain it thoroughly once a month. At the same time, pay attention to the aging of the wire to avoid the risk of leakage. A well-maintained aerator can increase the oxygen efficiency by more than 20%, thereby reducing the unit energy consumption.
4. Rational layout: improve oxygenation efficiency
The installation location and quantity of the aerator directly affect the aerating effect. If the layout is unreasonable, the dissolved oxygen in some areas is insufficient, and it can only be compensated by extending the running time, wasting electricity. The correct way is to install the aerator in the area with the lowest dissolved oxygen, such as the center of the pond or dead ends, and consider the direction of water flow to distribute the dissolved oxygen evenly.
For large water surfaces, a combination of multiple low-power aerators can be used instead of a single high-power one, which not only ensures uniform oxygen addition, but also facilitates flexible control.
5. Use frequency conversion technology: intelligent adjustment
The variable frequency aerator can automatically adjust the speed according to the amount of dissolved oxygen, reduce the speed when the dissolved oxygen is sufficient, and increase the speed when the dissolved oxygen is insufficient, so as to achieve energy saving. Although the initial investment is high, in the long run, the power saving effect is significant, usually saving 30% -50% of electricity bills.
For example, a variable frequency aerator runs at full speed when low dissolved oxygen, and runs at a reduced speed when high dissolved oxygen, with an average power of only 60% of the rated, and the electricity saved in one year can make up for the difference in equipment price. In addition, it can also be matched with an Internet of Things system to remotely monitor dissolved oxygen and electricity consumption, and further optimize the operation strategy.
Other energy-saving tips
Auxiliary power supply using solar or wind energy
If the farm has light or wind conditions, you can consider installing solar panels or wind turbines to provide part of the power for the aerator and reduce the dependence on the grid. Although the initial investment is large, it can reduce electricity bills in the long run and be green.
conjugated biological oxygenation
By planting aquatic plants and cultivating beneficial algae, dissolved oxygen in water can be naturally increased and the running time of the aerator can be reduced. But pay attention to controlling the density to avoid excessive oxygen consumption at night.
Frequently Asked Questions
How long is it appropriate to operate the aerator every day?
It is generally recommended to open for 2-3 hours at noon on sunny days and 1-2 hours in cloudy mornings. Continuous rainy or high temperature weather can be appropriately extended. But the specifics need to be adjusted according to the monitoring results of dissolved oxygen.
How to determine whether the aerator is overloaded?
If the motor heats up severely, the noise increases, or the ammeter reading exceeds the rated value, it may be overloaded. Immediately check whether the impeller is wound and the bearing is damaged.
Does the variable frequency aerator really save electricity?
Yes, the variable frequency aerator adapts to the demand for dissolved oxygen by adjusting the speed, avoiding long-term operation at full load, and the power saving effect is obvious, but it needs to be set up correctly and maintained regularly.
summarize
To reduce the power consumption cost of aerators, it is necessary to start from various aspects such as selection, operation, maintenance, layout and technology upgrade. Through precise selection, optimization of running time, regular maintenance, rational layout and the use of frequency conversion technology, electricity expenditure can be significantly reduced and breeding efficiency can be improved. It is recommended that farmers formulate energy-saving plans according to their own conditions and continuously monitor the effect.
If your aerator has a serious power consumption problem, you may wish to try the above methods, or consult professional technicians to tailor energy-saving strategies. Energy saving and consumption reduction, start now!
