Combined geothermal heat and pressure retarded osmosis as a new green power system

Henrik Tækker Madsen; Thomas Bruun Hansen; Takahito  Nakao; Shohei Goda; Erik Gydesen Søgaard

doi:10.1016/j.enconman.2020.113504

Combined geothermal heat and pressure retarded osmosis as a new green power system

Henrik Tækker Madsen, Thomas Bruun Hansen, Takahito Nakao, Shohei Goda, Erik Gydesen Søgaard^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

15 Citations (Scopus)

Abstract

SaltPower is the name of a new renewable energy system. The system uses brine with high contents of salts to make an osmotic pressure that can become converted into electricity by help of turbines and generators. We present the principle of the energy system, the setup of a 20 kW pilot plant and laboratory investigations for the selection of a membrane that can resist the high pressure which can be up to 70 bar. The osmotic power system can be applied together with an already existing geothermal plant where hot water from the underground is used for district heating purposes. Alternatively, it could be applied where salt is extracted from salt domes and many other sources of salt. Levelized Cost of Electricity (LCOE) is calculated on the osmotic power system when it is connected to a geothermal plant. The calculated value is competitive with other technologies creating electrical power.

Translated title of the contribution	Kombineret geotermisk varme og trykhæmmet osmose som et nyt grønt elsystem
Original language	English
Article number	113504
Journal	Energy Conversion and Management
Volume	226
ISSN	0196-8904
DOIs	https://doi.org/10.1016/j.enconman.2020.113504
Publication status	Published - 2020

Keywords

Draw solution
Electricity generation
LCOE
Osmotic power
RO membrane
SaltPower

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title = "Combined geothermal heat and pressure retarded osmosis as a new green power system",

abstract = "SaltPower is the name of a new renewable energy system. The system uses brine with high contents of salts to make an osmotic pressure that can become converted into electricity by help of turbines and generators. We present the principle of the energy system, the setup of a 20 kW pilot plant and laboratory investigations for the selection of a membrane that can resist the high pressure which can be up to 70 bar. The osmotic power system can be applied together with an already existing geothermal plant where hot water from the underground is used for district heating purposes. Alternatively, it could be applied where salt is extracted from salt domes and many other sources of salt. Levelized Cost of Electricity (LCOE) is calculated on the osmotic power system when it is connected to a geothermal plant. The calculated value is competitive with other technologies creating electrical power.",

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AU - Tækker Madsen, Henrik

AU - Hansen, Thomas Bruun

AU - Nakao, Takahito

AU - Goda, Shohei

AU - Søgaard, Erik Gydesen

PY - 2020

Y1 - 2020

N2 - SaltPower is the name of a new renewable energy system. The system uses brine with high contents of salts to make an osmotic pressure that can become converted into electricity by help of turbines and generators. We present the principle of the energy system, the setup of a 20 kW pilot plant and laboratory investigations for the selection of a membrane that can resist the high pressure which can be up to 70 bar. The osmotic power system can be applied together with an already existing geothermal plant where hot water from the underground is used for district heating purposes. Alternatively, it could be applied where salt is extracted from salt domes and many other sources of salt. Levelized Cost of Electricity (LCOE) is calculated on the osmotic power system when it is connected to a geothermal plant. The calculated value is competitive with other technologies creating electrical power.

AB - SaltPower is the name of a new renewable energy system. The system uses brine with high contents of salts to make an osmotic pressure that can become converted into electricity by help of turbines and generators. We present the principle of the energy system, the setup of a 20 kW pilot plant and laboratory investigations for the selection of a membrane that can resist the high pressure which can be up to 70 bar. The osmotic power system can be applied together with an already existing geothermal plant where hot water from the underground is used for district heating purposes. Alternatively, it could be applied where salt is extracted from salt domes and many other sources of salt. Levelized Cost of Electricity (LCOE) is calculated on the osmotic power system when it is connected to a geothermal plant. The calculated value is competitive with other technologies creating electrical power.

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DO - 10.1016/j.enconman.2020.113504

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JO - Energy Conversion and Management

JF - Energy Conversion and Management

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ER -

Combined geothermal heat and pressure retarded osmosis as a new green power system

Abstract

Keywords

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