Parametric analyses of energy consumption and losses in SWCC SWRO plants utilizing energy recovery devices

Farooque, A. Mohammed; Jamaluddin, A. T. M.; Al-Reweli, Ali; Jalaluddin, P.A.M.; Al-Marwani, S.M.; Al-Mobayed, Abdulsalam; Qasim, Awais

doi:10.1016/j.desal.2007.06.004

Cited by 50 publications

(18 citation statements)

References 2 publications

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“…Moreover, using ERT and PX with RO desalination improved the specific power consumption per m . These results are in agreement with those of previously published studies [21][22][23][24]. However, it is necessary to link this improvement with the additional costs related to using the ERT in the unit to get a complete picture.…”

Section: Resultssupporting

confidence: 83%

“…The power consumption of RO desalination per m 3 varies between 2.5 and 7.9 kWh/m 3 [22][23][24] and therefore reducing the energy consumption of the RO desalination technology by using an energy recovery device (ERD) could save from 1.5% to 27% of the total power consumed by high pressure pumps [23]. The three common commercial ERDS are ERT, turbochargers and isobaric pressure exchange.…”

Section: Introductionmentioning

confidence: 99%

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Exergy Analysis of a Two-Pass Reverse Osmosis (RO) Desalination Unit with and without an Energy Recovery Turbine (ERT) and Pressure Exchanger (PX)

et al. 2015

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This paper presents an exergy analysis of an actual two-pass (RO) desalination system with the seawater solution treated as a real mixture and not an ideal mixture. The actual 127 ton/h two pass RO desalination plant was modeled using IPSEpro software and validated against operating data. The results show that using the (ERT) and (PX) reduced the total power consumption of the SWRO desalination by about 30% and 50% respectively, whereas, the specific power consumption for the SWRO per m with (PX). In addition, the exergy efficiency of the RO desalination improved by 49% with ERT and 77% with PX and exergy destruction was reduced by 40% for (ERT) and 53% for (PX). The results also showed that, when the (ERT) and (PX) were not in use, accounted for 42% of the total exergy destruction. Whereas, when (ERT) and (PX) are in use, the rejected seawater account maximum is 0.64%. Moreover, the (PX) involved the smallest area and highest minimum separation work.

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Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of a Two-Pass Reverse Osmosis (RO) Desalination Unit with and without an Energy Recovery Turbine (ERT) and Pressure Exchanger (PX)

et al. 2015

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“…Moreover, using the ERT with RO desalination improved the specific power consumption per m 3 water to 5.0 kW/m 3 from 7.2 kW/m 3 . This result is in agreement with previously published studies (Dashtpour and Al-Zubaidy, 2012;Ludwig, 2010;Farooque, 2008). However, it is necessary to link this improvement with the additional costs related to using the ERT in the unit to get a complete picture.…”

Section: Ro Plant System Descriptionsupporting

confidence: 82%

“…The RO desalination power consumption per m 3 produced varies between 2.5 kWh/m 3 and 7.9 kWh/m 3 (Dashtpour and Al-Zubaidy, 2012;Farooque et al, 2008;Ludwig, 2010). Therefore, reducing energy consumption of the RO desalination technology by using ERD could save from 1.5% to 27% of the total power consumed by high-pressure pumps (Farooque et al, 2008). The three common commercial ERDs are ERT, turbocharger and isobaric pressure exchange.…”

Section: Introductionmentioning

confidence: 99%

Exergy analysis of two-pass reverse osmosis (RO) desalination with and without energy recovery turbine (ERT)

Eshoul

Agnew

Al-Weshahi³

et al. 2016

IJEX

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Abstract:The paper presents the exergy analysis of an actual two-pass RO desalination system considering the seawater solution as a real mixture and not an ideal mixture. The actual 127 ton/h two-pass RO desalination was modelled using IPSEpro software and validated against operating data. The results showed that using the energy recovery turbine (ERT) reduced the seawater RO (SWRO) desalination total power consumption by 30% and specific power consumption for SWRO per m 3 water from 7.2 kW/m 3 to 5.0 kW/m 3 . In addition, the exergy efficiency of the RO desalination improved by 49% and exergy destruction was reduced by 40%. The results also showed that the rejected seawater, when the ERT was not in use, accounted for 42% of the total exergy destruction.Keywords: RO desalination; energy recovery turbine; exergy; exergy destruction.Reference to this paper should be made as follows: Eshoul, N., Agnew, B., Al-Weshahi, M.A. and Latrash, F. (2016) 'Exergy analysis of two-pass reverse osmosis (RO) desalination with and without energy recovery turbine (ERT)', Int.

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“…The typical energy consumption in seawater reverse osmosis (RO) plants operating at 40-45% product water recovery and with energy recovery from the high pressure reject stream is currently about 3-4 kW/m 3 [21].The average power consumed by the high pressure pump in Parametric analyses of energy consumption and loss in seawater reverse osmosis (SWRO) plants using energy recovery devices is in the range 5.56-7.93 kW h/m 3 [22]. SWRO with energy recovery is assumed to consume about 5.2 kW/m 3 electrical energy [23].…”

Section: Discussionmentioning

confidence: 99%

Application of Freezing to the Desalination of Saline Water

et al. 2011

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Freezing is one of the methods used for desalination. Although different methods, like reverse osmosis and distillation, are used commercially, freezing can be used for remote areas, cold regions and for small and remote societies. We have investigated the method of crystallization by external cooling via non-direct contact for desalination of seawater. The steps used for the freezing-melting (FM) process included: crystallization (at −20 • C), separation, surface washing and melting of the samples. Three samples were taken from Boshehr beach. After three cycles of FM, the total dissolved solid (TDS) of the first sample reduced from 37,650 to 15,200, 5,059 and 1,403 mg/L, for cycles one, two and three respectively. For the second sample the TDS reduced from 40,750 to 17,884, 5,584 and 1,487 mg/L and for the third sample with from 33,351 to 15,885, 4,850 and 1,345 mg/L. This showed that after three cycles of FM, potable water can be produced.

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Parametric analyses of energy consumption and losses in SWCC SWRO plants utilizing energy recovery devices

Cited by 50 publications

References 2 publications

Exergy Analysis of a Two-Pass Reverse Osmosis (RO) Desalination Unit with and without an Energy Recovery Turbine (ERT) and Pressure Exchanger (PX)

Exergy Analysis of a Two-Pass Reverse Osmosis (RO) Desalination Unit with and without an Energy Recovery Turbine (ERT) and Pressure Exchanger (PX)

Exergy analysis of two-pass reverse osmosis (RO) desalination with and without energy recovery turbine (ERT)

Application of Freezing to the Desalination of Saline Water

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