First, calculate the hydraulic power of the pump

There is a specific formula that can calculate the power of any pump, but to understand it, it is necessary to analyze its different components. The problematic formula is as follows:

Power = (pump flow x pump pressure)/performance

The meaning of each element, as knowing this is essential for applying it.

Ii. Flow

The number of kilograms of product to be pumped per unit time. The running curve of the pump is usually calculated at 20° and the density of water is 1 kg/l. Therefore, the most common ways of expressing flow are liters per second (l/s), liters per minute (l/min), or cubic meters per hour (m3/h).

Three, pump pressure

The pump must provide a pressure that is the sum of three factors: geometric height, pressure drop, and spearhead.

The geometric height is the height difference between the pump point and the drainage point. If the fluid is to rise, it is positive; However, if the emission point is low, the value will be negative. This is because gravity will help, and it will be cheaper for the pump to do the job.

The pressure drop is caused by friction between the fluid and various components of the installation itself, such as filters or valves. This loss will depend on the flow rate, pipe diameter and the material from which the pipe is made. Therefore, depending on the type of installation, there will be rules to determine the minimum and maximum traffic that can be supported.

Finally, the spearhead refers to the pressure of the fluid as it leaves the pipe.

4. Performance

In the formula analyzed, the total performance of the centrifugal pump is formed by a combination of three different performance types: hydraulic, mechanical, and electrical.

In this case, hydraulic pressure is the power loss occurring in the pump stator. Machinist, on the other hand, refers to the amount of power lost in different transmission elements, such as the universal joints of a screw pump.

Finally, the electric force will be the performance of the motor itself. This is usually about 98%.

5. Perform calculations

Once we have analyzed the different elements that affect the power calculation, we can express the set mathematically:

P = Gravity * Q* H/(eg * 450) = Q* H/(eg * 450)

It is the same as the previous formula, but decomposed into all elements. So, P is power, expressed in horsepower. Gravity, on the other hand, will take 1 as the general value.

Q should be the mass flow rate expressed in liters per minute (l/min). H, for its part, would be an Israeli-Palestinian expression of pressure. The number 450 is the conversion factor for obtaining horsepower. In the end, the number of signs is going to be the total yield.

Fluid model This formula will therefore be used for all centrifugal pumps, regardless of model or installation type. Only the internal characteristics of the pump concerned and its installation should be considered.

The above content describes how to identify the right power to choose the right oneKNOLLKono centrifugal pumpThe problem. In addition, Shenzhen Oudejie Technology specializes in selling new imported KNOLL centrifugal pumps, and promises to sell products are new imported products, while providing our customers with quotation, selection, product information and other services.