Danfoss Energy Recovery Device

iSave 21 Plus and iSave 40

The iSave 21 PLUS and iSave 40 consists of an isobaric pressure exchanger , a high-pressure positive displacement booster pump and an electric motor

Both of the designs ensure lubrication of the moving parts by the fluid itself.

All parts included are designed to provide long service life with a constant high efficiency and minimum service required.

The vane pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the driving shaft – enabling flow control.

The electric motor provides speed control of both the pressure exchanger and the high pressure booster pump on the same shaft – preventing overspin/overflushing.

The iSaves need a VFD that allows the motor to apply a constant torque from low speed to maximum speed.

iSave 21 Plus

is a powerful ERD for smaller plants with a water capacity of 110 to 350 m3 per day. iSave 21 Plus is designed for high reliability, low maintenance and reduced lifecycle costs.

The iSave 40

consists of an isobaric pressure exchanger, a high-pressure positive displacement booster pump and an electric motor. Max. differential pressure: 5 barg/72 psig. Speed : 600 – 1200 rpm.

Certifications

 
Danfoss Official Website