solar cooling installation uwc & desert mountain ... · uwc tampines, singapore. 29.09.2014 4...

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Solar cooling installation UWC & Desert Mountain Highschool, AZSolar cooling installation UWC & Desert Mountain Highschool, AZ

Inga Doemland, S.O.L.I.D. Asia Energy Services Pte Ltd. (Singapore)

Christian Holter

Inga Doemland, S.O.L.I.D. Asia Energy Services Pte Ltd. (Singapore)

Christian Holter

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Solar Cooling & Hot Water

for School Campus

Solar Panels:

3900 m² / 2.73 MW

LiBr absorption chiller:

1470 kW

Operation started: 2011

ESCo- System

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ContentsContents

• Performance of the solar cooling plant in 2013

• Singapore weather 2013

• TRNSYS simulation vs. reality in 2013

• System improvements based on simulation– Variable speed drives cooling water circuit

– Additional collector area – various orientations

• Performance of the solar cooling plant in 2013

• Singapore weather 2013

• TRNSYS simulation vs. reality in 2013

• System improvements based on simulation– Variable speed drives cooling water circuit

– Additional collector area – various orientations

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UWC Tampines, SingaporeUWC Tampines, Singapore

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PERFORMANCE OF THE SOLAR

COOLING PLANT IN 2013

PERFORMANCE OF THE SOLAR

COOLING PLANT IN 2013

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Solar heat input to the cooling and domestic hot water systemSolar heat input to the cooling and domestic hot water system

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Electricity consumptionElectricity consumption

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Deviation from reality Deviation from reality

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Qsolar Qhw Qchw QDHW Pel SPFel

Operation

hours

2013

real

1566

MWh

1406

MWh

949

MWh

143

MWh

151

MWh6.3 2046 h/a

Base -7.3% -4.8% -2.8% 1.4% -3.8% 6.5 2020 h/a

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SYSTEM IMPROVEMENTS BASED

ON SIMULATION

SYSTEM IMPROVEMENTS BASED

ON SIMULATION

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Electricity savings due to cooling water circuit improvementsElectricity savings due to cooling water circuit improvements

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Increase of cooling generation due to additional collector areaIncrease of cooling generation due to additional collector area

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Change of the SPF due to additional collector areaChange of the SPF due to additional collector area

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Desert Mountain High School, USADesert Mountain High School, USADesert Mountain High School, USADesert Mountain High School, USA

Solar Panels: 5,000 m² � 3.5 MW

Cooling load: 500 tons /1750 kW

In operation since 2014


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solar cooling installation uwc & desert mountain ... · uwc tampines, singapore. 29.09.2014 4...

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