A heat exchanger is a device used to transfer heat, usually to transfer heat from one fluid to another without them mixing. A heat exchanger usually consists of a number of parallel pipes in which one fluid flows through the pipe and another fluid flows through the outside of the pipe. In this way, heat can be transferred from one fluid to another for heating or cooling purposes. Heat exchangers are widely used in many industries, such as chemical, pharmaceutical, food processing, air conditioning and heating systems, etc.
Heat exchanger usually consists of the following components:
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How to make the pump energy-saving measures (1) use the right type of pipeline centrifugal pump The correct calculation of pipeline flow and lift, and make the selected pump rated flow and lift equal to or slightly greater than the required flow and lift Centrifugal pump to work in high efficiency area. Centrifugal pump flow, lift the greater the amount of surplus, the lower the efficiency of work.
　　
How to make the pump energy-saving measures (2) to reduce the resistance of the pipeline to reduce the required lift pipeline From the Bernoulli equation we can see, the pump head required for the pipeline.
　　
The first term (Z2-Z,) and the second term is determined by the working conditions, the third is determined by the pump structure, can not be free to change. To reduce the required pump head day, you can only consider from the fourth bi. Feasible measures to reduce the resistance of the pipeline are: appropriate to increase the diameter of the pipe: to avoid the installation of unnecessary valves, gauges, etc .; pipe as far as possible to go straight, less turning; the use of smooth inner surface of the pipe; Debris and scaling and so on.
　　
Pipeline resistance decreased, then the pump head required for the pipeline also decreased, thus reducing the pump power consumption.
　　
How to make the pump energy saving measures (3) to improve the structure of the impeller to improve impeller work capacity to improve the structure of the pump body to reduce the loss of fluid energy within the centrifugal pump. The purpose of improving the structure of the impeller is to improve the flow state of the liquid in the impeller, to ensure stable flow, no eddy current, impact loss and friction loss to a minimum. In theory, the more the impeller blades, the smaller the blade thickness, the efficiency of the impeller to work on the liquid will be higher. However, the more vanes, the narrower the flow passage area of ​​the liquid in the impeller, the greater the resistance when the fluid passes through the impeller: the smaller the blade thickness, the lower the blade strength, the more susceptible to damage and the harder it is to manufacture. The idea of ​​solving this problem lies in: In the case of normal use, it is necessary to ensure that there is sufficient flow path impeller area, but also an appropriate increase in the number of leaves.
　　
Centrifugal pump internal leakage and unevenness of the pump housing surface is also a cause of energy loss. To this end, we must promptly replace the wear and tear of the population seal ring to reduce internal leakage. Grind the runner to make the runner diversion surface smooth and reduce the hydraulic loss in the pump. Remove pump sand, stone, cast iron residue and other obstructions.
　　
How to make the pump energy-saving measures (4) reduce the impeller diameter, Sheng Sheng lower impeller speed When the pump flow and head greater allowance, and no smaller and more suitable pump available, you can use turning the impeller to reduce the impeller OD method, or reduce the impeller speed to achieve the pump shaft power to reduce the purpose of reducing power consumption. After the outer diameter of the impeller is cut or the impeller speed is reduced, the pump shaft power drops rapidly.
　　
It should be suggested that, after cutting or reducing the speed of the impeller, the motor with smaller power should be replaced due to the reduced shaft power. Otherwise, it is difficult to achieve the purpose of saving energy.
　　
In addition, the strict implementation of centrifugal pump assembly technology requirements, to maintain good centrifugal pump performance, enhance routine maintenance, timely replacement of excessive wear parts, but also an important measure of energy saving centrifugal pump.
1. Heat exchange pipe: Pipe used to transfer heat, usually made of metal materials, such as copper, stainless steel, etc.
2. Heat exchange surface: A surface used to transfer heat, usually consisting of metal sheets or pipes. The greater the surface area, the higher the heat transfer efficiency.
3. Housing: Housing, usually made of metal or plastic, used to secure heat exchange pipes and surfaces.
4. Seals: Seals used to prevent media leakage, usually made of rubber or silicone rubber.
5. Support: A support used to support a heat exchanger, usually made of steel or cast iron.
6. Import and export pipes: pipes used for medium entry and exit, usually made of metal or plastic.
7. Cleaning hole: A hole used to clean the inside of the heat exchanger, usually located on the upper or side of the heat exchanger.
8. Insulation layer: Insulation layer used to keep the temperature of the heat exchanger stable, usually made of glass wool or polyurethane foam.
In the production or selection, how to make the pump energy-saving and how to make the centrifugal pump energy-saving measures are the following points.