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Integration of Solar Process Heat into an Existing Thermal Desalination Plant in Qatar

Dieckmann, Simon and Krishnamoorthy, Ganesh and Aboumadi, Mahmoud and Pandian, Yuvaraj and Dersch, Jürgen and Krüger, Dirk and Al-Rasheed, Abdulsattar and Krüger, Joachim and Ottenburger, Ulrich (2015) Integration of Solar Process Heat into an Existing Thermal Desalination Plant in Qatar. In: Solar PACES 2015. 21st SolarPACES Conference, 13.-16. Sep. 2015, Kapstadt, Südafrika.

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Abstract

The water supply of many countries in the Middle East relies mainly on water desalination. In Qatar, the water network is completely fed with water from desalination plants. One of these power and desalination plants is located in Ras Abu Fontas, 20 km south of the capital Doha. The heat required for thermal desalination is provided by steam which is generated in waste heat recovery boilers (HRB) connected to gas turbines. Additionally, gas fired boilers or auxiliary firing in the HRBs are used in order to decouple the water generation from the electricity generation. In Ras Abu Fontas some auxiliary boilers run 24/7 because the HRB capacity does not match the demand of the desalination units. This paper contains the techno-economic analysis of two large-scale commercial solar field options, which could reduce the fuel consumption significantly. Both options employ parabolic trough technology with a nominal saturated steam output of 350 t/h at 15 bar (198°C, 240 MW). The first option uses direct steam generation without storage while the second relies on common thermal oil in combination with a molten salt thermal storage with 6 hours full-load capacity. The economic benefit of the integration of solar power depends mainly on the cost of the fossil alternative, and thus the price (respectively opportunity costs) of natural gas. At a natural gas price of 8 US-$/MMBtu the internal rate of return on equity (IRR) is expected at about 5%.

Item URL in elib:https://elib.dlr.de/98948/
Document Type:Conference or Workshop Item (Speech)
Title:Integration of Solar Process Heat into an Existing Thermal Desalination Plant in Qatar
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dieckmann, Simonsimon.dieckmann (at) dlr.deUNSPECIFIED
Krishnamoorthy, GaneshQatar Electricity and Water CompanyUNSPECIFIED
Aboumadi, MahmoudQatar Electricity and Water CompanyUNSPECIFIED
Pandian, YuvarajSolarliteUNSPECIFIED
Dersch, Jürgenjuergen.dersch (at) dlr.deUNSPECIFIED
Krüger, DirkDirk.Krueger (at) dlr.deUNSPECIFIED
Al-Rasheed, AbdulsattarQatar Electricity and Water CompanyUNSPECIFIED
Krüger, JoachimSolarlite GmbHUNSPECIFIED
Ottenburger, UlrichAl Nasr Holding Co. WLLUNSPECIFIED
Date:16 October 2015
Journal or Publication Title:Solar PACES 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Entsalzung, Solarthermie, Solarenergie, Solar, CSP
Event Title:21st SolarPACES Conference
Event Location:Kapstadt, Südafrika
Event Type:international Conference
Event Dates:13.-16. Sep. 2015
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Line-Focusing Systems (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Linienfokussierende Systeme
Deposited By: Dieckmann, Simon
Deposited On:04 Nov 2015 13:44
Last Modified:31 Jul 2019 19:55

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