The efficiency of the pump is the key to whether the power is completely converted to mechanical energy:
1.Water pump in the coil, the power will heat, it shows that a part of the electric power can be consumed by the coil resistance.
2.The pump has bearings, and the bearings are a lot of friction, the friction will consume energy.
3.The pump should be core rules of the circle, but because now the production level is limited, there is no perfect round objects, so the core because of centrifugal action to produce mechanical loss
4.There are a lot of pumps are at room temperature, when the level of environmental temperature changes, will affect the resistance of the coil, this change will also lead to the consumption of electrical energy
Several factors affecting the efficiency of clear water pump:
1.Water pump itself is the most fundamental efficiency of the impact. Under the same working conditions of the pump, the efficiency may be a difference of more than 15%.
2.The running condition of the water pump is lower than the rated condition of the pump, the pump efficiency is low and the energy consumption is high.
3.Motor efficiency in the use of basic remain unchanged. Therefore, it is important to choose a high efficiency motor.
4.The influence of the water pump efficiency is mainly related to the design and manufacture quality. Pump selected, the late management of small.
5.Hydraulic loss, including hydraulic friction and local resistance loss. After running a certain period of time, the impeller and guide vanes inevitably lead to the surface abrasion, the hydraulic loss increases, the hydraulic efficiency is reduced.
6.Water pump volume loss, also known as leakage losses, including the impeller seal ring, the class, the axial force balance between the three kinds of leakage loss. Volume efficiency is not only related to the design and manufacture, but also with the management of the late. After running for a certain period of time, due to the friction between the components, the gap increases, the volume efficiency decreases.
7.As the filter cylinder block, intake and other causes of pipeline centrifugal pump and idling.
8.Water pump before the start, the staff do not pay attention to the centrifugal pump start the preparatory work before the heating pump, plate pump, infusion pumps and other basic operating procedures are not complete, often caused by pump cavitation, causing the pump noise, vibration, low pump efficiency.
General water pump is designed to obtain the highest efficiency, that is, the hydraulic structure parameters of the water pump is the best combination of the highest efficiency. Other pumps, such as the special requirements of the pump its efficiency is not likely to exceed the same period of time the water pump efficiency. Other pump efficiency is lower than the main reason for the water pump is the widening of their flow channels. The value of the efficiency decrease is mainly related to the extent of the broadening. Other pump flow channels are widened to prevent obstruction.
