How Do Temperature Affect Pump Selection?

How temperature affects pump selection
Do you know that temperature is a key factor in pump selection? It includes the temperature of the process medium and the environment of installation. Understanding these will ensure that you choose the right pump structure and material, and the most important thing is to select the right pump.

Temperature
Temperature refers to the heat present in a gas, liquid or solid. In the selection of the pump, we need to consider both the atmospheric temperature and the temperature of the pumping medium.

Temperature and pressure
Temperature not only affects the stability and efficiency of operation, but also affects the pressure of the pump delivery system. When the temperature of the gas approaches zero, it becomes a liquid, and as the temperature continues to increase, the pressure of the gas also increases. Different media generate pressure in different ways, before we design a system for pumping and conveying media, must be considered the connection between temperature change and pressure, If this is not considered, and the pump selector is not aware of how gasses will respond to temperatures within the system, faults can occur costing the business time, money, and production.

Zero degree environment
When the pump is installed or moved outdoors and the temperature drops overnight, the fluid medium inside the pump may freeze or solidify. When the pump is restarted, parts may be damaged. When selecting pump, we need considered the install environment, heating jackets may be required to maintain a consistent temperature within the pump or insulation. Consistent to avoid freezing or solidification of the fluid medium.

How temperature affects your pump
The material of pump selection, corrosion can occur depending on the temperature, high temperature liquid has more corrosive action against the material than those at lower temperature liquid. Therefore, is important to check the chemical compatibility of material at the temperature be for selecting a pump.

Pump Component Selection
As the temperature of the liquid medium increases, heat will be transferred to the entire pump system, including the internal shaft, bearings or bearings on the motor. Long-term operation may lead to shortened service life; therefore, the selection of parts also needs to consider temperature resistance level.

Changes in fluid viscosity
Temperature will affect the viscosity change of the liquid medium during the pumping process, for example, honey when heated becomes runny, therefore, it is necessary to understand how temperature change's liquid medium viscosity during pumping, and ensure that the correct pump is selected.

Part expansion and contraction
Under high temperature or low temperature, the parts will expand or contract at different speeds. When selecting the pump, it is also necessary to consider the use of high temperature or low temperature resistant parts to ensure the stability of the pump during operation.

Keep the heat ot maintaining low temperature
Under certain operating application conditions, the medium needs to maintain a certain temperature to keep the medium flowing. The system design can consider using a jacket type pump to achieve this, or use proper insulation to maintain a low temperature.

NPSH net positive suction head (NPSH)
When designing the pumping system, the temperature and vapor pressure of the fluid need to be considered to ensure that the pump has the correct NPSHa.