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Energy recovery

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... brine depending on its end-use and the inter-stage salinity thereof. While dealing with disposal scenario some of the pertinent alternatives are energy saving, footprint area available, statutory regulations, recovery. Extraction of salts by solar evaporation is widely practiced in arid climate ...
Desalination 139 (2001)

This paper traces the history of large-scale work-exchanger energy recovery systems from early concepts; the first seawater reverse osmosis application in 1975; through the present state of the art. Work-exchange ...
Desalination 138 (2001)

The subject of energy recovery for seawater membrane desalination has been in a constant state of flux for all of the years since the inception of the concept of usin ...
Desalination 125 (1999)

... suitable for use in remote areas. Operation at variable-flow allows the uncertainty and variability of the wind to be accommodated without need of energy storage. Batteries, which are common in stand-alone systems, are avoided and water production is dependent on the instantaneous wind speed. A model... models, identified through laboratory testing. Performance predictions are presented and discussed. Keywords: Wind power; Reverse osmosis; Energy recovery; Seawater desalination; Renewable energy 1. Introduction There is no need to dwell on the importance of energy in the daily life of modern societ ...
Desalination 153 (2002)

... Energy Recovery, Inc.’s Big Rotor Pressure Exchanger is the result of over 100 years of technology development. Work exchanger devices developed fo ...
Desalination 165 (2004)

... and it is identified that the most promising configuration is a reverse osmosis (RO) plant utilising a pressure exchanger-intensifier for energy recovery. A numerical model of the RO plant with a pressure exchanger-intensifier is developed that shows that a specific energy consumption o ...
Desalination 220 (2008)

A small-scale seawater reverse-osmosis system with excellent energy efficiency is presented. The system promises to deliver up to 460 l/h of potable water, from seawater (at 40,000 ppm), while consuming less than... significant loss of efficiency — the specific energy consumption remains near to 3.5 kWh/m3. The keys to these impressive figures are the energy recovery provided by the Clark pump, from Spectra Watermakers Inc., and the use of a variable water recovery ratio control algorithm, developed by CREST.
Desalination 153 (2002)

... for their high water production cost that reaches the value of 15–20 h/m3. This high water production cost is mainly due to the high energy requirements (10–20 kWh/m3) that accounts for around 60–70% of the operating and maintenance cost and that is due to the fact that majority of... 60–70% of the operating and maintenance cost and that is due to the fact that majority of the small autonomous PV-SWRO do not contain energy recovery devices (ERDs). Another reason for the high water production cost is the need of solar batteries to achieve a constant pressure and flow rate fo ...
Desalination 221 (2008)

A new pressure exchanger (PX) device transfers the energy from the concentrate stream directly to the feed stream. This direct, positive displacement approach results in a net transfer efficiency of over... from operating plants that have been retro-fitted using these new devices. There has been a recent proliferation of commercially available energy recovery devices based on the positive displacement direct pressure exchange approach. This increased interest is driven by the fact that the technolog ...
Desalination 153 (2002)

Taking three examples of plants with brine concentrators, we analyse energy consumption of existing and projected systems. This includes plants using Turbocharger boosting system, Turbocharger boosting with additional... plants using Turbocharger boosting system, Turbocharger boosting with additional Impulse turbine and Impulse turbine acting as boosting and recovery system. Energy consumption of the high pressure systems and the high pressure pumps are compared. Sites analysed are Curaçao and a 7,000 m³/ ...
Desalination 138 (2001)

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