How to choose a pump that matches the industrial chiller

How to choose a pump that matches the industrial chiller

In the process of producing and assembling the chiller, the chiller factory needs to pay attention to and determine the accessories, not only the so-called key components such as compressors, evaporators, and condensers, but also some seemingly unimportant components, such as water pumps. ! Let’s take a look at what basis does the chiller factory have for choosing water pumps?

For the chiller, the most important data of the water pump is the head and flow rate. The specific number is determined according to the chilled water flow rate of the chiller. To determine this data, it is necessary to determine the cooling capacity of the chiller. The cooling capacity is determined according to the model specifications of the chiller produced by the chiller factory or the data provided by the customer during customization. Therefore, the choice of the water pump is based on it. It is not random guessing and random choice. Random selection and replacement of the water pump may cause it to not match the chiller, and there are many problems!

　　 Specifically, how should the pump determine the flow rate?

We know that in the chiller, there are two flow data of chilled water and cooling water. The flow rate of the water pump must be greater than the flow rate of the chilled water and chilled water. The specific flow rate of the water pump can be reversed, or through the chiller factory at the beginning Check the specifications of the selected model when manufacturing the chiller.

Like the flow rate of a chiller, if you want to know the head data, or how the chiller factory needs to choose which pump head when manufacturing the chiller, it must be determined by the rated data of the chiller, or it can be reversed. Push: According to the specific length of the pipeline, the chiller system, and the resistance of the water system the water pump has to face, add a certain percentage to this data, and you can get how much head a water chiller needs a pump. Generally speaking , Choose the big or not the small.

　　 The head of the water pump is more difficult to calculate relative to the flow rate, because in addition to the impact of the flow on the head of the water pump, the components of the chiller system, the length of the pipe and even the water flow speed will all have an impact on the head of the water pump.

The water flow speed is related to the diameter of the pipe, and the water flow resistance of each part of the chiller will also have corresponding data. Add all the data that can affect the pump lift, and add some additional resistance that is not in the calculation. Then the pump head can be finally determined.

　　 If you want to calculate a more accurate pump head, it is very complicated. It is recommended to choose a large one instead of a small one, so that the pump flow and head parameters cannot meet the requirements of industrial chillers.