VI CDTI-NEDO JOINT WORKSHOP

Perspectives and challenges of TES for Industrial Processes

Spanish Group of Energy Storage

ANA LAZAROLeader of Thermal

Energy Storage Division

Bilbao, 23rd June 2016

#WasteHeat The Effective use of thermal energy in industry

Introduction Why? How?Perspectives

and Challenges

Conclusions

00Content

#WasteHeat The Effective use of thermal energy in industry

- I3A – Instituto de Investigación en Ingeniería de Aragón

(Aragon Institute of Engineering Research)

- INA – Instituto de Nanociencia- BIFI – Instituto de Biocomputación- IUMA – Instituto de Matemáticas y Aplicaciones- IUCA – Instituto en Ciencias Ambientales de Aragón- Instituto Mixto CIRCE- ISQCH – Instituto de Síntesis y Catálisis Homogénea- ICMA – Instituto de Ciencias de los Materiales de Aragón- ZLC – Zaragoza Logistics Center - ICE – Instituto de Ciencias de la Educación

01Introduction: Research Institutes at UNIZAR

#WasteHeat The Effective use of thermal energy in industry

- I3A – Instituto de Investigación en Ingeniería de Aragón

- INA – Instituto de Nanociencia- BIFI – Instituto de Biocomputación- IUMA – Instituto de Matemáticas y Aplicaciones

http://i3a.unizar.es/en

02Introduction: Research Institutes at UNIZAR

#WasteHeat The Effective use of thermal energy in industry

- Thermal energy storage

- HVAC

- Solar energy

- Modeling, simulation and design of thermal devices

- Modeling, simulation and design of energy systems

- Thermoeconomics, eco-efficiency and optimization

Solar cooling facility Solar Dish-Stirling

HVAC facilities

03Introduction: GITSE – Research Group & Research Areas

#WasteHeat The Effective use of thermal energy in industry

Thermal Energy Storage (TES) Why?

Fuente: http://alerce.cnice.mecd.es/

Fuente: http://alerce.cnice.mecd.es/

1

#WasteHeat The Effective use of thermal energy in industry

Charge DischargeStorage

time

a

b

c

d

Qloss Qloss Qloss

TES Systems based on 3 stages:

Thermal Storage implies Thermal Losses, so it should be any advantage to do it.

05Why Thermal Energy Storage?

#WasteHeat The Effective use of thermal energy in industry

Coupling Energy demand-availability: solar, cogeneration, free-cooling, WASTE HEAT

Taking advantage of off-peak hours (electrical tariff)

Lower nominal capacity of the equipment

Lower Energy demand

Supply assurance

Thermal inertia/Thermal protection

06Why Thermal Energy Storage?

#WasteHeat The Effective use of thermal energy in industry

Coupling Energy demand-availability: solar

TES

07Some examples

#WasteHeat The Effective use of thermal energy in industry

Coupling Energy demand-availability: solarSeasonal StorageSolar District Heating Systems

Plant FactsheetOwner: Vojens Fjernvarme, DK Location: Vojens, DenmarkStart of operation: 2012 - extension 2014 Shutdown:

Aperture area in m2: 70000 Capacity in kWth 49000Collector system: FPCStorage type: WTES Storage size in m3: 203000

http://solar-district-heating.eu

08Some examples

#WasteHeat The Effective use of thermal energy in industry

Lower nominal capacity Peak demand covered by TES

http://www.areous.com.au

09Some examples

#WasteHeat The Effective use of thermal energy in industry

How can Thermal Energy be Stored?2

#WasteHeat The Effective use of thermal energy in industry

Source: Andreas HauerEnergy Storage –Technologies & Applications

IEA Energy Storage Technology RoadmapStakeholder Engagement Workshop 2013

11TES Technologies

#WasteHeat The Effective use of thermal energy in industry

Water tanks

Solid

Underground Thermal Energy Storage

www.iftech.co.uk

1

2

3

4

5

6

7

Entrada

Salida

12Sensible

#WasteHeat The Effective use of thermal energy in industry

Huang et al. 2009

Solid-liquid phase change

Bulk (macroencapsulated) Solid-compounds PCM slurries

PCM emulsions

micro-encapsulated PCM slurries

PhaseChangeMaterial

Arkar and Medved(2005)

http://www.rubitherm.eu

http://www.rubitherm.eu

13Latent

#WasteHeat The Effective use of thermal energy in industry

Thermochemical

Sorption storage

adsorption

absorption

Chemical storage

14Thermo Chemical

#WasteHeat The Effective use of thermal energy in industry

Mobile Sorption Storage System for Industrial Waste Heat Utilisation

Industrial Waste heat TES

District Heating and Cooling

15TES Technologies: examples not in-situ

#WasteHeat The Effective use of thermal energy in industry

Perspectives and challenges of TES for Industrial Processes

3

#WasteHeat The Effective use of thermal energy in industry

#WasteHeat The Effective use of thermal energy in industry

Application requirements

• Power

• Storage capacity

• Charging temperature

• Discharging temperature

Material selection

• Stored Energy

• Heat conductivity

• Corrosion/Compatibility with encapsulation

• Resistance to thermal cycles

18Perspectives of TES for Industrial Processes

#WasteHeat The Effective use of thermal energy in industry

CHALLENGES

for Industrial

Applications

Materials

Storage Density

Temperature range

Costs

Heat exchanger

Power

Compactness

System Integration

Load management

Waste Heat Recovery

Charging/discharging strategies

19Challenges of TES for Industrial Processes

#WasteHeat The Effective use of thermal energy in industry

0

10

20

30

40

50

60

70

80

6 8 10 12 14 16 18 20 22 24 26

Sto

rage

den

sity

[kW

.h/m

3]

Temperature [oC]

6kW

·h/m

3

4oC

55kW

·h/m

3

PCM

Water

20Materials: Storage Density

#WasteHeat The Effective use of thermal energy in industry

21Materials Latent Heat Storage

#WasteHeat The Effective use of thermal energy in industry

N. Yu, R.Z. Wang, L.W. Wang, Sorption thermal storage for solar energy, Progress in Energy and Combustion Science, Volume 39, Issue 5, 2013, 489-514

22Materials Thermochemical Storage

#WasteHeat The Effective use of thermal energy in industry

Mac

roen

cap

sula

ted

PC

Mvo

l:60

%

23Heat exchangers Energy density: Latent Heat Storage

#WasteHeat The Effective use of thermal energy in industry

Ground

Sensible-solid

Sensible-water

PCM

Ice

Thermo-chemical

24Technology Readiness Levels (TRL)

#WasteHeat The Effective use of thermal energy in industry

IRENA, TES technological brief, January 2013

25Typical parameters of TES systems

#WasteHeat The Effective use of thermal energy in industry

Conclusions4

#WasteHeat The Effective use of thermal energy in industry

The storage of thermal energy can replace heat and cold production from fossil fuels, reduce CO2 emissions

and lower the need for costly peak power and heat production capacity.

In Europe, it has been estimated that around 1.4 million GWh per year could be saved— and 400 million tonnes

of CO2 emissions avoided—in the building and industrial sectors by more extensive use of heat and cold

storage.

Industrial waste heat recovery can be achieved by TES providing the required thermal energy demand in-

situ or at other sites by mobile TES under development.

TES is the most adequate Energy Storage technology to couple intermittent thermal energy sources to

thermal energy demand. Efficiency losses in energy transformation are avoided.

Industrial by-products and waste material may have a potential use as storage materials.

Thermal Energy Division of the Spanish Group of Energy Storage (cross-cutting Technology for Technological

Platforms) gathers research and development capacities on Storage Materials, TES System and TES integration to face

the described challenges

27Conclusions

THANK YOU

どうも有難う御座います

ESKERRIK ASKO

GRACIAS

Ana Lazaro

ana.lazaro@unizar.es

For further information