Cooling by Sunshine- 1 -Solar Solution Centre

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ConcentratedSolar

Energy

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Cooling by Sunshine- 2 -Solar Solution Centre

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Solar – a range of options

� CSP (steam raising solar power with mirrors):� power towers� parabolic trough� linear Fresnel

� Flat plate PV� crystalline, thin film

� CPV – Fresnel lens, parabolic mirror, linear Fresnel mirrors

Cooling by Sunshine- 3 -Solar Solution Centre

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A NEW SOLAR ENERGY COLLECTOR TECHNOLOGY

�Breakthrough solar collector from HelioDynamics

�Makes heat hotter, quicker,

�Makes power more cheaply

Cooling by Sunshine- 4 -Solar Solution Centre

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HD SOLAR COLLECTOR RANGE

HD10

HD16

Cooling by Sunshine- 5 -Solar Solution Centre

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APPLICATIONS

� Building air-conditioning,

� District cooling,

� Industrial heat and cooling,

� Desalination,

� Power generation,

� Water pumping.

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Benefits

� Decouple the timing of projects from availability of the power grid or gas network

� Visibly meet green targets

� Reduce business exposure to future energy price spikes

Cooling by Sunshine- 7 -Solar Solution Centre

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HOW SOLAR COOLING WORKS

� Solar collectors capture sun’s energy to make high temperature heat

� Absorption chillers cool buildings

� Cooling towers and/or boreholes discard both heat flows

Warmwater

(35 C)

Cooling(10 C)

Heat(180 C)

Absorption

chiller

Solar

collectors

Cooling

tower

Warmair

(50 C)

Boreholes

Cooling by Sunshine- 8 -Solar Solution Centre

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Solar desalination

�Technology options:� Heat for Multi-stage flash distillation

(MSF)� Power and heat for multi-effect

distillation (MED) – 2 power options� District cooling and low temperature

MED� Power for Reverse Osmosis (R-O)

Cooling by Sunshine- 9 -Solar Solution Centre

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THE SOLAR BREAKTHROUGH

Hotter –

� intensely focused light

� captured efficiently

� high temperatures for efficient

cooling - 180 C

�Steam or pressurised water

Cooling by Sunshine- 10 -Solar Solution Centre

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THE SOLAR BREAKTHROUGH

Faster –

� low thermal mass heats up

quickly – (10-30 min, full sun)� essential for effective cooling

Cooling by Sunshine- 11 -Solar Solution Centre

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THE SOLAR BREAKTHROUGH

Cheaper –� thin flat glass mirror� light structure, yet stiff and

strong�mass production, simple

assembly� tough against hail, high winds,

sand and dust, ultraviolet

Cooling by Sunshine- 12 -Solar Solution Centre

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SOLAR ECONOMIES

�M.East has land and sun

� 75% of power is for air-

conditioning

� Local solar air-conditioning or

district cooling, or solar electricity.

Cooling by Sunshine- 13 -Solar Solution Centre

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HD500.e CPV – next year

� €2.60 /We installed.

� Higher kWh/kWe than flat

plate PV

� Solar farms and

distributed generation

� 16 kWe peak modules

Cooling by Sunshine- 14 -Solar Solution Centre

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HD economics

0

100

200

300

400

500

0 50 100 150 200

Energy yield per unit area - kWh/m2/y

Capital cost of energy

production - €c/(kWh/y)

HD - Solar Power

Flat-plate PV

Andasol-1Parabolic Trough

SESDish Stirling

PS – 10Power Tower

Takes up more land More compact

Lower cost

Cooling by Sunshine- 15 -Solar Solution Centre

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SOLAR PROJECT EXAMPLE

� 10,000 sq m building, � 1,000 workers in building,� 1 MW of cooling� 2-effect absorption chiller� 0.85 MW solar field,� Cost ~ €3m installed� Solar plan area-

� 4,000 sq m� distance up to 500 m

Cooling by Sunshine- 16 -Solar Solution Centre

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Real world – Abu Dhabi outputs(~65% of peak capacity due to haze)

UAE HD16 daily energy v degree days+ load constant

-

200.00

400.00

600.00

800.00

1,000.00

1,200.00

01/0

1/20

0501

/02/

2005

01/0

3/20

0501

/04/

2005

01/0

5/20

0501

/06/

2005

01/0

7/20

0501

/08/

2005

01/0

9/20

0501

/10/

2005

01/1

1/20

0501

/12/

20051

0 W

h/d

ay/k

W,

Deg

ree-h

ou

rs/d

ay

Cooling by Sunshine- 17 -Solar Solution Centre

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Implications

� Cooling loads do not reduce due to lower sunlight

� In summer peaks, loads can increase during periods of lower sun

� Storage is important – especially cold water storage

� Ideally store ‘cold’ for several days

� Ice storage requires lower COP ammonia chillers (potential safety issue)

� Fuel or grid back-up required if no without storage.

Cooling by Sunshine- 18 -Solar Solution Centre

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Case study – office, design phase

� 5 blocks of 1,000 sq m of office space

� 4,100 sq m rental space –rapid build

� 2 stories

� 720 person occupancy

� Central 150 RT 2-effect chiller, fed by steam from 10 6-module arrays of HD16

� More than half load in summer is dehumidification of 10 l/p/s make-up air

� 2-effect chiller dehumidifier appears more economic than desiccant wheel.

� Propane and grid ‘back-up’

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Key design factors

�Building orientation

�Roof hard points for mounting

�Personnel access

�Steam line routing

�Architectural design

Cooling by Sunshine- 20 -Solar Solution Centre

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www.heliodynamics.com