Combined Heat and Power Solar Combined Heat and Power Solar

CHaPSCHaPS SystemSystemat Bruce Hallat Bruce Hall

JJohn ohn SmeltiSmeltinknkAustralian National UniversityAustralian National University

Canberra ACTCanberra ACT

Rockingham 20kW ArrayRockingham 20kW ArrayAug 2000Aug 2000

BackgroundEarlier Concentrator work resulted in a large scale 2 axis concept

1998 Spring Valley test site

1995 Single Trough

CHAPS system is fullyCHAPS system is fully integratedintegratedCollector Area 300mCollector Area 300m22

Student Accommodation

90 Residents

4 storey building

Self Contained Apartments

CHaPSCHaPS: : Bruce HallBruce Hall--Packard WingPackard Wing

Combined Heat And Power Solar SystemCombined Heat And Power Solar System

Characteristic SpecificationNumber of Mirrors 136Total aperture Area 297 m2

Total Solar Cell Area 6.8 m2

Geometric Concentration 38 xNominal DCpeak Output 32 kWNominal Heat Outputpeak 160 kW

CHAPS CollectorsCHAPS Collectors8 Parabolic Reflectors8 Parabolic Reflectors17 Mirror Panels17 Mirror Panels24 24 metresmetres longlong

1 mm

1 mm

0.1 mm

Low Iron Glass

Silver Mirror

Fusible Film

Galv Steel

Mirror Construction

GOML mirrors by ANU

collector is able to tilt through 180collector is able to tilt through 180°° to follow the sunto follow the sun

Collector OperationCollector Operation

Mounted Directly to Building StructureMounted Directly to Building StructureComply with Building CodesComply with Building Codes

CHAPSCHAPS –– Tracking ControlTracking Control

Motor Interface Drivers

Microprocessor controllerPositions 8 collectorsAccurate to 0.1o

Developed by ANU

InverterInverter-- Power Solutions AustraliaPower Solutions Australia

Collectors Grid Connectedthrough PSA InverterInput 525 VDC @ 76 AmpsOutput 240 Vac 50Hz

Battery Backup for Tracking

Plant Room EquipmentPlant Room Equipment

Solar Pump 1

Pump 3 from HWSHeat Exchanger–HWS to room heating

Heat Exchanger-Solar to HWS

Accumulator

Pump 2 to HWS

SolahartSolahart Hot Water StoreHot Water Store

One of Two BanksTotal Capacity6000 litres

OvertemperatureOvertemperature ControlControl

Flow diverted through Flow diverted through RadiatorRadiators s At At 8080°°CC

3 way Valve operated by BMS

Cell Performance @ 30 sunsCell Performance @ 30 sunsIV curv es of cell130-46

-24

-18

-12

-6

00.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80

V oltage (V )

Cur

rent

(A)

25 degrees C

65 degrees C

T Voc Isc Vmp Imp Pow er Eff( oC) (V) (A) (V) (A) (W ) (%)25 0.73 20.0 0.61 19.2 0.8 11.8 20.165 0.67 20.4 0.54 19.2 0.77 10.4 17.8

FF

Receiver Performance at STCReceiver Performance at STC

CHaPS Prototype

M o d u le A 9 8 5 4 m m 1 9 t h De c 2 0 0 5

-2 5 .0

-2 0 .0

-1 5 .0

-1 0 .0

-5 .0

0 .00 .0 5 .0 1 0 .0 1 5 .0 2 0 .0

V o l ta g e (V )

Cur

rent

(A)

Summary Results

Voc (V) Isc (A) Vmp (V) Imp (A) FF Pout (W ) Eff (%)

17.7 19.3 13.3 16.3 0.63 216 13.1%

RectificationRectificationSeveral faults were encountered and Several faults were encountered and

rectified during commissioningrectified during commissioningPivot mount interferencePivot mount interferenceCable durabilityCable durabilityGuide sheave seizureGuide sheave seizureRefit temperature sensorsRefit temperature sensorsSundry leaksSundry leaksActuator noiseActuator noiseBMS CalibrationBMS CalibrationBMS InterfaceBMS InterfaceCollector tracking calibrationCollector tracking calibration

Collector Temperature

0

10

20

30

40

50

60

70

23/01/06 15/03/06Date

OC

C 1

C 2

C 3

C 4

C 5

C 6

C 7

C 8

CHaPS System Performance 22 Feb 06

0

10

20

30

40

50

60

70

0:04 3:04 6:04 9:04 12:04 15:04 18:04 21:05

Tim e

OC

Cold s ide Tank Temp

Ambient

SP-1

SP-2

Tank Sup Temp

Tank Ret Temp

Col Sup Temp

Col Ret Temp

Lessons learnedLessons learnedInstallation has been successfully Installation has been successfully

completedcompletedFull scale projects provide a Full scale projects provide a complete experiencecomplete experienceChallenge to produce large quantity Challenge to produce large quantity of cells in university laboratoryof cells in university laboratoryBig advantage to have easy access Big advantage to have easy access to the first systemto the first system

Combined Heat And Power Solar Combined Heat And Power Solar SystemSystem

For more informationFor more information see: see: solarsolar..anu.edu.auanu.edu.au