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Energy Saving Solutions Saving energy for the pump motor

Saving energy for the pump motor

Pic12909Today the problem of energy saving are in place in all production systems and remains the top priority. Whereas most of the energy consumption is to give the engine power, thus saving energy issues for the engine is very important.

In this section we will present the technology to save energy for the pump motor.

To solve this problem we derived from the following basic principles:

According to the theory of hydraulics, engine shaft power P, Q flow rate, fluid pressure H are related by the following equation:

P = K * H * Q /?

Where K is a constant? is performance.

Relationship of parameters on the engine speed as follows:

Q1/Q2 = N1/N2
H1/H2 = (N1/N2) 2
P1/P2 = (N1/N2) 3

N1 curves in the figure above shows the relationship between pressure flow Q with Q when the rotational speed of the fan on the motor shaft does not change. Curve 2 represents the resistance characteristic of the pipe (valve fully open). Suppose the fan is designed to operate most effectively at point A, then save the output Q is 100%. Motor shaft power is P1 = Q1 * H1, corresponding to a square area of A-H1-O-Q1.

When the flow of output reduction, assuming 70% down to Q2 at the request of the technology, resistance of the pipeline can be increased by adjusting the valve. When the resistance characteristic of the pipeline to curve 3, and the system operates at point B instead of A's original. We can see increased pressure and power on the motor shaft is calculated by the area of the B-H2-O-Q2. Thus very little power reduction compared to the original.

If using the inverter to adjust the fan speed on the motor shaft, fan speed curve can be reduced to N2. While at the same volume output Q2, the pressure in the pipeline is significantly down on the shaft H3 and engine capacity also decreased markedly, by area of the C-H3-O-Q2.

So when using the inverter will bring about a clear energy consumption of the engine.
Based on the above principle, the inverter 110 of CHV INVT been specially designed with the ability to save energy used mainly for pumps. Line inverter can be applied to all kinds of different liquid pumps, capable of automatically adjusting the liquid flow rate and pressure in different working stages, thus saving considerable power consumption.

CHV 110 when using the inverter, the inverter can automatically change the speed and flow of the liquid under the current working status of the system. Based on the value placed on speed and pressure of the flow, variable speed adjusts to suit the load in different working stages, thus saving the maximum power consumption while ensuring the pump operation is stable and accurate.

Also when using CHV inverter 110, can be applied only to soft start the motor, increasing the ratio of the engine COSF.

The fundamental characteristic of CHV 110
- Ability to restrict flow, can withstand up to 180% current overload in the 30s, ensuring the ability to function normally when the heat load.
- Automatic restart after fault sources, ensuring the continuity and productivity of the system.
- The effect of energy saving from 25% to 60%.
- Have all the protection functions such as protection of low voltage, high voltage protection, over current protection, phase protection error.
- Cooling system independent, efficient, good dust.
- compact size, stable, easy to install, user friendly interface.
This line of variable frequency was applied successfully in many different applications with different types of engines

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