presentación de powerpoint · parabolic trough plants based on solar two molten-salt power tower...

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Innovative Technology Solutions for Sustainability

Solar thermal electric technology with thermal energy storage

New Mexico

27 August, 2014

ABENGOA

Hank Price, P.E.

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Engineering and construction

• Power plants, ethanol

• Process plants, desalinization

• T&D

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Concession-type infrastructures

• Solar,

• transmission lines,

• desalination,

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Industrial production

• Biofuels

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Abengoa’s business is structured around three activities

Energy Environment

We perform these three activities in two high-growth sectors

Our business

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Abengoa Solar Development

Europe

693 MW

Middle East & Africa

400 MW

U.S.A.

560 MW

Towers: Steam Accumulator PS10: 11 MWe saturated steam 0.5 hrs

PS20: 20 MWe saturated steam 0.5 hrs

Khi: 50 MWe superheated steam, 2 hrs

Troughs: Indirect Molten-Salt Solana: 280 MWe, 6hrs

KaXu: 100 Mwe, 3 hrs

Xina: 100 Mwe, 5 hrs

Ashelim: 110 Mwe, 6 hrs

Towers: Direct Molten-Salt Atacoma 1: 110 MWe, 17.5 hrs

Thermal Energy Storage

Copyright © Abengoa Solar, S.A. 2014. All rights reserved. 4

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R&D makes cost reductions a reality

Copyright © Abengoa Solar, S.A. 2013. All rights reserved

Molten salt tower

Superheated tower

DSG trough loops

Solugas tower Oil trough

Molten salt storage

Stirling dishes

PV lab

HCPV

PS20

PS10

Abengoa Sanlucar test facility – Seville, Spain

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Dispatchable solar power meeting the needs of utilities

Solana: The worlds largest parabolic trough solar power plant 280 MWe with 6 hours of thermal energy storage

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July

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Relative Value of Generation Trough Plant w/6hrs TES Solar Radiation

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Relative Value of Generation Trough Plant w/6hrs TES Solar Radiation

Solar Plant With Storage vs. Utility System Load

Solar Plant Dispatch Profiles

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Cold Salt Tank Hot Salt Tank

Cold salt

pump

Hot salt

pump

Immersion heater

(typical of 4)

Immersion heater

(typical of 4)

Oil-to-salt heat

exchanger (typical of 6)

Distribution

ring header

Distribution

ring header

Cooing air pipes

(typical of 24)

Cooing air pipes

(typical of 24)

1.0 m

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(typical of 4)

Vent valve

(typical of 3) Nitrogen

transfer line

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storage tank

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control valve

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(typical of 2)

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maintenance

gantry crane

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Indirect 2-tank molten-salt design for parabolic trough plants

Based on Solar Two molten-salt power tower experience. Uses oil to salt heat exchangers to transfer energy to and from storage

U.S. DOE Solar Two 1994

Indirect 2-tank TES configuration used for non-Abengoa parabolic trough plants in Spain

TES for Parabolic Trough Plants

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Improved heat exchanger design Alfa Laval plate and frame heat exchanger

Reduces the number of separate salt heat exchangers

Reduces salt valves and piping

Reduces pressure drop through heat exchangers,

Improves temperature approach between salt and HTF

All salt equipment located above tanks for emergency drain back.

Long-shafted molten-salt pumps mounted above tank

Recirculation system for HTF & TES freeze protection & improved TES start-up

Abengoa TES Technology

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R&D Pilot plan Commercial project

TES (Thermal Energy Storage)

stage-0 stage-1 stage-2 stage-3 stage-4

R&D in molten salts

R&D collaboration

CDTI grant

O&M

Lessons learned

Applied in Solana

6h of storage

10 Copyright © Abengoa Solar, S.A. 2012. All rights reserved

R&D path to Commercialization of Thermal Energy Storage

Solana

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Collector Type: Abengoa E2 Parabolic Trough Collector (5.75m x 125m)

Heat Transfer Fluid: Therminol VP-1

Solana Power Station

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Solar Field Size: 2,200,000 m2

Land Area: 3 square miles, formerly agriculture


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Plant Size: 280 MW gross generation, 2 x140 MW turbines, ~250 MW net after station parasitic loads


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Thermal Energy Storage (TES): 6 hours of full load operation 2-tank, indirect, molten-salt TES

Six parallel TES trains


Arial View of Solana

15 Power Block and TES is located at the center of the solar field

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Aerial view of the Power Block.

TES

Unit #2 Unit #1

HTF Area


Solana Generating Station TES System

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Temporary melting system and salt storage

Cold Salt #1

#2

#3

#4

Hot Salt

#5

#6

Salt / oil heat exchanger

TES System

• Capacity = 6 hours @ 280 MWe

• ~4470 MWht

Molten-Salt

• 60:40 mix of sodium and potassium nitrate

• 135,000 tons of salt

• Freeze point of 435°F

• dT ~ 180°F

Storage Tanks

• 12 x 2.9 Million Gallon Tanks

• Diameter = 122 feet

• Max level = 32 feet

• 6 Hot and 6 cold salt tanks

Heat Exchanger

• Alfa Laval Plate Frame

• Duty: 6 @ 745 MWt

• Dry Weight 350 tons/ea

Copyright © Abengoa Solar, S.A. 2014. All rights reserved.

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Cloudy Day, 1 Turbine, Summer APS Profile

Clear Day, 1 Turbine, Winter APS Profile Clear Day, 24 / 7 Op., Summer APS Profile

Solana Generating Station


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Molten-Salt Tower

• Location: Antofagasta region in Chile • Technology: Molten-salt tower

• Tower: 250 m tall (including receiver) • Solar Field: 10,600 ASUP heliostats (140 m2 ) • 17.5 hours of thermal energy storage • 110 MWe gross power Rankine steam turbine (superheated steam at 550ºC and 130 bar)

• Baseload operation: 24 hour operation to supply power to local mines. • Due to the size of storage, solar and turbine operation are largely independent.

• Construction to begin in 2014, operation to begin in 2017

Baseload Solar Power

Abengoa Solar’s Cerro Dominador MS tower project in Chile ASUP 140 heliostat

Abengoa Solar’s MS Tower Pilot Project

Electric Energy Storage Capital Cost $/kWhe

Efficiency Life Notes

Batteries:

Near-term DOE goal1 $250 75% 4000 cycles

Long-term DOE goal1 $150 80% 5000 cycles

Thermal Energy Storage:

Oil trough indirect (NREL2)

$212 93% >30 years Solana in operation validates cost and performance.

(1,500 MWhe, 250MWe)

MS tower direct TES (NREL2)

$66 99% >30 years Chile MST project under construction. Cost and

performance consistent with NREL assumptions

(1750 MWhe, 100 MWe)

DOE Sunshot Goal for CSP1

$30 95% 30 years

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Notes: 1) U.S. DOE, Grid Energy Storage, December 2013 2) NREL, SAM Default Assumptions, 2014

Energy Storage Comparison


Solar Thermal Electricity

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• Renewable, Dispatchable, Price Stability • Green aspects of solar power • Flexibility of natural gas • Price stability of coal

• Thermal Energy Storage • Proven – delivering dispatchable power in the U.S. today • Scalable and cost effective • Performance does not degrade with time or cycling • Newer advanced technologies lead to improved cost and

performance.

ABENGOA Innovative technology solutions for sustainability

Hank Price

[email protected]

Thank you

presentación de powerpoint · parabolic trough plants based on solar two molten-salt power tower...

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