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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
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