A submersible pump (or sub pump, electric submersible pump (ESP)) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between pump and the fluid surface.
Submersible pumps push fluid to the surface as opposed to jet pumps having to pull fluids. Submersibles are more efficient than jet pumps. A submersible pump pushes water to the surface by converting rotary energy into kinetic energy into pressure energy. This is done by the water being pulled into the pump: first in the intake, where the rotation of the impeller pushes the water through the diffuser.
Submersible pump is a mechanical device used for transferring various types of fluid in different end use industries and is highly preferred for agricultural and industrial applications. Submersible pump is vertically submerged under the fluid to be transported (such as water etc.) and is driven by electric current, operating on the principle of centrifugal force. Various kinds of submersible pumps are available in the market, serving different purposes.
The Global submersible pump market is anticipated to reach USD 12.5 billion in 2023 witnessing a CAGR of 5.5% over the forecast period 2015-2023. Asia-Pacific accounted for the highest percentage share of 42% to the global market in 2014, however the market is estimated to reach USD 2.8 billion by 2016 This can be attributed to various factors such as growing urbanization, rapid growth in industrialization, increasing population and emerging economy of developing nations such as India, China and Japan.