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Meeting POLYCITY - Tarragona - 14/06/06

LARGE-SCALE SOLAR AIR CONDITIONING

PLANT OF CERDANYOLA

CONCEPTUAL DESIGN AND

SELECTION TECHNOLOGIES

Jesús López

POLYCITY PROJECT - CERDANYOLA DEL VALLÈS

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Meeting POLYCITY - Tarragona - 14/06/06

CONTENT

1 – Problem definition.

2 – Solar thermal technologies / Cooling technologies. Selection.

3 – Solar thermal plant design considerations

4 – Absorption / adsorption comparison study

5 – Results

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Meeting POLYCITY - Tarragona - 14/06/06

Source: ZENSOLAR / ESTIF

2000 m2

1750 kWh / m2 y1200 MWh

700 MWh

SOLAR THERMAL PLANT – Problem definition

600 kWh/m2 y

COP = 0.58

T = 70 ºC

3500 MWh

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Solar thermal collector technolo gies

Glazed flat-plateCollector (FPC)

Vacuum collector

Standard FPC

CPC collector

Evacuatedtube collector (ETC)

Direct flow-through(ETC)

Heat Pipe (ETC)

Without reflector (ETC)

Dry connection(ETC)

With reflector (ETC – CPC)

Wet connection(ETC)

IRC collector

Hot water Heating / Adsorption cooling Heating / Absorpt ion cooling

Vacuum flat-platecollector

40 ºC 60 ºC 80 ºC 100 ºC

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Cooling technologies

H2O – LiBr Single effect absorption chiller

Silica gel-water adsorption chiller

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Technical Selection

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Design considerations

Engines

Gasification

Solarplant

Abs./Ads.Chillers

Comp.Chiller

C

E

H

Engines

Engines

Gasification

Solarplant

AbsorptionChillers

Comp.Chiller

C

E

H

Engines

AdsorptionChillers

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Design considerations

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Design considerations

HOURLY SOLAR IRRADIANCE, COLLECTORS TILT = 35 º HOURLY AMBIENT TEMPERATURE

0

200

400

600

800

1000

1200

0 730 1460 2190 2920 3650 4380 5110 5840 6570 7300 8030 8760

Time (h)

W/m

2

0

10

20

30

40

50

60

ºC

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Design considerations

0

50

100

150

200

250

Janu

ary

Febru

ary

March

April

May

June

July

Agost

Septe

mberOcto

berNov

emb er

Decem

ber

0

10

20

30

40

50

Parc Tecnològic Solar-Data Temperature Meteo Station Temperature solar data

Glo

bal h

oriz

onta

l rad

iatio

n, k

W·h

/m 2

Anual Irradiation Parc tecnològic: 1550 kWh/m2 yAnual Irradiation Solar-Data: 1484 kWh/m2 y

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Abs / Ads comparison study

BUFFERSTORAGE

T36

T26

T27

T29

T28

SORPTIONCHILLER

T33

T35

T37

T38

E6Electrical energy consumed

T34

L1

F6F8 F7

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Abs / Ads comparison study

Definitions

)/m(kW·ht (t) I I) ,T ,5T( )(T Yield Heating Anual 2heat

8760

1adcollectord y∆××+=∑η

)(kW·h/mn Irradiatio Global Anual

)(kW·h/m )(T Yield Heating Anual )(T

2

2d

dcollector anual y

y=η

)T(COP )T( )(T COP dcooldcollectors anualdSolar ×= η

)/m(kW·h )(T COP )(T Yield Heating Anual )(T Yield Cooling Anual 2cooldcooldd y×=

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Meeting POLYCITY - Tarragona - 14/06/06

0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

45 55 65 75 85 95 105 115

DRIVING TEMPERATURE (ºC)

ETC-CPC-ad

ETC-ad

FPC-1-ad

FPC-2-ad

IRC-ad

CPC-ad

ETC-CPC-ab

ETC-ab

FPC-1-ab

FPC-2-ab

IRC-ab

CPC-ab

COP Ads

COP abs

Adsorption

Absorption

Thermal Plant and Cooling Performance Coeficients

SOLAR THERMAL PLANT – Abs / Ads comparison study

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Meeting POLYCITY - Tarragona - 14/06/06

0

0,1

0,2

0,3

0,4

45 55 65 75 85 95 105 115

DRIVING TEMPERATURE (ºC)

ETC-CPC-ad

ETC-ad

FPC-1-ad

FPC-2-ad

IRC-ad

CPC-ad

ETC-CPC-ab

ETC-ab

FPC-1-ab

FPC-2-ab

IRC-ab

CPC-ab

Adsorption Absorption

COP SOLAR

SOLAR THERMAL PLANT – Abs / Ads comparison study

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Meeting POLYCITY - Tarragona - 14/06/06

100

200

300

400

500

600

700

45 50 55 60 65 70 75 80 85 90 95 100 105 110 115

ºC

kWc/

m2

ETC-CPC-ad

ETC-ad

FPC-1-ad

FPC-2-ad

IRC-ad

CPC-ad

ETC-CPC-ab

ETC-ab

FPC-1-ab

FPC-2-ab

IRC-ab

CPC-ab

Adsorption

Absorption

Cooling yield

kWh

c/m

2 ySOLAR THERMAL PLANT – Abs / Ads comparison study

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Meeting POLYCITY - Tarragona - 14/06/06

Economic cost

SOLAR THERMAL PLANT – Abs / Ads comparison study

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Meeting POLYCITY - Tarragona - 14/06/06

Economic cost

SOLAR THERMAL PLANT – Abs / Ads comparison study

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Meeting POLYCITY - Tarragona - 14/06/06

0,8

1

1,2

1,4

1,6

1,8

2

45 50 55 60 65 70 75 80 85 90 95 100 105 110 115

Millions

DRIVING TEMPERATURE (ºC)

€

ETC-CPC-ad

ETC-ad

FPC-1-ad

FPC-2-ad

IRC-ad

CPC-ad

ETC-CPC-ab

ETC-ab

FPC-1-ab

FPC-2-ab

IRC-ab

CPC-ab

Adsorption Absorption

Economic cost: Total Investment Cost

SOLAR THERMAL PLANT – Abs / Ads comparison study

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Meeting POLYCITY - Tarragona - 14/06/06

0,6

0,8

1

1,2

1,4

1,6

1,8

2

45 50 55 60 65 70 75 80 85 90 95 100 105 110 115

Millions

DRIVING TEMPERATURE (ºC)

€

ETC-CPC-ad

ETC-ad

FPC-1-ad

FPC-2-ad

IRC-ad

CPC-ad

ETC-CPC-ab

ETC-ab

FPC-1-ab

FPC-2-ab

IRC-ab

CPC-ab

Adsorption Absorption

SOLAR THERMAL PLANT – Abs / Ads comparison studyEconomic cost: Total investment cost with innovation subsidies

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Results

Adsorption system

440000 €

Solar field 560000 €

I.D.A.E. subsidy

200000 €

Innovation subsidy

237650 €

Own economic resources 562350 €

TOTAL INVESTMENT COST

FINANCING

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Results

BUFFERSTORAGE

T36

T26

T27

T29

T28

ADSORPTIONCHILLER

T33

T32

T35

T37

T38

E6Electrical energy consumed

T34

L1

F6F8 F7

1956 m2

1.37 MW

Parameter Unit Value Gross collector area m2 1956 Number of flat plate collectors - 762

Collector Type - Selective flat plate collector

Collector gross area m2 2.567 Optical efficiency coefficient (c0) 0.69 Linear loss coefficient (c1) W/ m2 K 2.61 Quadratic loss coefficient (c2) W/ m2 K2 0.0098 Tilt angle º 35 Operation temperature solar collector ºC 70 Specific cost (incl. 20% installation cost)

€ / m2 281

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Results

THERMAL / COOLING POWER 1956 m2 Top adsorption = 65 ºC

0200400600800

1000120014001600180020002200

0 730 1460 2190 2920 3650 4380 5110 5840 6570 7300 8030 8760

Time (h)

kW

Irradiance Thermal power Cooling power

Irradiation: 3350 MWhThermal yield: 1250 MWhCooling yield: 700 MWh

Equivalent Anual OperatingHours = 1167 h

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Results

BUFFERSTORAGE

T36

T26

T27

T29

T28

ADSORPTIONCHILLER

T33

T32

T35

T37

T38

E6Electrical energy consumed

T34

L1

F6F8 F7

Parameter Unit Value Volume m3 5 Maximum storage temperature ºC 100 Material - Cast Iron Specific cost € / m3 500

5 m3

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Results

BUFFERSTORAGE

T36

T26

T27

T29

T28

ADSORPTIONCHILLER

T33

T32

T35

T37

T38

E6Electrical energy consumed

T34

L1

F6F8 F7

ADSORPTION SYSTEM Mycom ADR-80

Parameter Unit Value

Nominal thermal capacity kW 468

Maximum thermal capacity kW 658

COP - 0.60

Nominal chilling capacity kW 281

Maximum chilling capacity kW 395

Number of Units - 2

936 kWt

562 kWc

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Meeting POLYCITY - Tarragona - 14/06/06

SOLAR THERMAL PLANT – Future tasks

• Simulation of the whole solar cooling system (solar collectors, adsorption chiller, cooling tower).

• Selection of the hydraulic scheme and control strategy.

• Coupling with the distring heating and district coolingnetworks.

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Meeting POLYCITY - Tarragona - 14/06/06

Thank you for your attention.