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Energy Recovery Devices

Global demand for clean water continues to accelerate. Safe, reliable and cost-effective desalination solutions are increasingly important to many communities. The energy-efficient and scalable design of the seawater reverse osmosis (SWRO) process makes it the leading choice for municipal and commercial water supply. Flowserve offers you energy recovery solutions that are among the most efficient and reliable in the world.

Energy is generally the biggest cost driver in any SWRO desalination facility, thereby making energy recovery equipment critical to the process. Flowserve is a world leader in the manufacture and supply of the most efficient energy recovery devices for the SWRO desalination process. Through its Calder™ brand, Flowserve offers two types of energy recovery technologies: isobaric devices and energy recovery turbines. Together they have more than 30 years of experience and have recovered more than 750 MW of energy.

In addition to minimizing your current power usage, both of these technologies help minimize the impact of future energy cost increases.


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Isobaric Devices

Energy recovery devices using isobaric technology, also called pressure or work exchangers, are the most efficient ever developed for the desalination industry. Flowserve isobaric energy recovery devices can recover 98% of the energy in the brine waste stream. The recovered energy is used to pressurize raw water, reducing the energy input required for the high pressure feed pumps by up to 60%. These units are frequently specified where the highest efficiencies and lowest OPEX are required in SWRO plants. Typically, they are used in mid- to extra-large sized projects. Flowserve has installed more than 650 units, which recover energy in excess of 330 MW.

Work Exchanger Technology

Work Exchanger Technology