The United States Office of Naval Research and Ocean Pacific Technologies (OPT) are working to develop and test new energy recovery and pumping technologies aimed at improving the efficiency of smaller and medium sized SWRO systems. OPT has developed a new hybrid design termed an axial piston-pressure exchanger (AP-PX) pump. The AP-PX is a combination axial piston pump (APP) and pressure exchanger (PX) machine. Axial piston pumps and pressure exchangers both use an axial piston design, where a cylindrical rotor/drum with longitudinal ducts/bores rotates around a central axis. The new AP-PX design capitalizes on these similarities to create a high efficiency pump and isobaric energy recovery device in a single machine that eliminates the need for extraneous booster pumps, flow controls and other auxiliary equipment. This paper will present detailed descriptions of this new technology and development program. A detailed analysis of the technologies benefits and drawbacks will also be provided. In addition, operational data from alpha prototypes will be published.
This presentation is available to AMTA Members only.
- John MacHarg
- Ocean Pacific Technologies
- AMTA Biennial Conference, Las Vegas, NV
- Biennial Conference
- Seawater Desalination (d) Energy Recovery Options, United States Office of Naval Research, Ocean Pacific Technologies (OPT), Axial piston pumps, pressure exchangers. axial piston-pressure exchanger (AP-PX) pump