solar absorption chiller final senior design project materials and mechanical engineering department...
TRANSCRIPT
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SOLAR ABSORPTION CHILLER
FINAL SENIOR DESIGN PROJECT
MATERIALS AND MECHANICAL ENGINEERING DEPARTMENT
FLORIDA INTERNATIONAL UNIVERSITY
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GROUP 3
Robert MartinJuan Aristizabal Mikail Williams Dr. Andres Tremante
MEMBERS ADVISOR
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OBJECTIVE
Design a transportable air conditioning system using solar
energy and absorption chiller technology.
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MOTIVATION
Renewable energy
Abundant free source of energy: SUN!
Waste heat
Reduce carbon emissions
Reduce chlorine based refrigerants
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GLOBAL COMPONENT
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GLOBAL COMPONENTWFC-SC5 Manual (English)
Who can benefit from this project?
Environment: by reducing carbon and chlorine emissions
World-wide disaster and remote applications
Reduce global electrical consumption
Improvement and utilization of solar energy technology
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GLOBAL COMPONENTWFC-SC5 Manual (French) WFC-SC5 Manual (German)
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DESIGN PROCESS
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ASSUMPTIONSParameter Given
Heat Medium 120 °F
Heat Input 25.1 kW
Vessel Pressure 80 mm Hg
Lithium-Bromide Quality 50 %
Water Temperature 120 °F
Li-Br Temperature 168 °F
Cooling Capacity 17.6 kW
CHW Target Temperature 44 °F
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COMPONENTS SELECTION
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ABSORPTION CHILLER CYCLE
Chiller Component
Heat Transfer
(kW)Generator 25.1Condenser 20.4
Absorber 22.3Evaporator 17.6
TOTAL 85.4
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HEAT TRANSFER ANALYSIS
¿ System Component
ΔT (°F)
CP
(J/kg-K)QT
(W) (GPM)
Generator 12 4180 25100 14.3
Condenser 15 4180 20400 9.3
Evaporator 10 4180 17600 12.0
Absorber 12 4180 22300 12.7
Waste Heat Recovery 20 4180 42700 14.6
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ABSORPTION CHILLER SELECTION
YAZAKI WFC-SC5 ABSORPTION CHILLER
Cooling Capacity 5 Tons (17.6 kW)
Cooling Output: 44.6 °F Water
Heating Medium: 120 °F Water
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PUMP SELECTIONPump
Number
PowerFlow Rate Capability
(GPM)
Head Capability
(Ft)Pump to Use
HP kW
1 0.100 0.0746 14 142410 High Capacity
Circulator
2 0.082 0.061 20 5 IL-110 Inline Circulator
3 0.100 0.0746 16 6 IL-110 Inline Circulator
4 0.100 0.0746 12 162410 High Capacity
Circulator
5 0.040 0.0298 14 2 IL-007 Inline Circulator
Total 0.404 0.302
‘Taco © Pump Selection Application’
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TESTING CONDITIONS FOR EFFICIENCY
MonthGI
(Btu/ft2/day)*Month
GI (Btu/ft2/day)*
January 990 July 1500
February 1150 August 1550
March 1410 September 1300
April 1610 October 1230
May 1610 November 1010
June 1560 December 900
Ambient temperature: 95 °F
Temperature in: 110 °F
Temperature out: 120 °F* Information taken from the University of Tennessee
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SOLAR COLLECTOR SELECTION
ΔT ≈ 30 °F
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SOLAR COLLECTOR EFFICIENCY ANALYSIS
Summer Month Solar Skies
SS-16ApricusAP-30
March 66% 41%April 67% 41%May 67% 41%June 67% 41%July 66% 41%
August 67% 41%
Winter Month
Solar Skies SS-
16ApricusAP-30
January 65% 39%February 66% 40%
September 66% 40%October 66% 40%
November 65% 39%December 65% 38%
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SOLAR COLLECTOR QUANTITY
𝐸𝑖𝑛=𝐸𝑜𝑢𝑡+𝐸𝑙𝑜𝑠𝑡
𝑨𝑺𝑷=¿¿𝐸𝑖𝑛=𝐴𝑆𝑃 ∙ 𝐼𝑆 cos𝜃 𝐼
¿𝜂=
𝐸𝑢𝑠𝑒𝑓𝑢𝑙
𝐸𝑖𝑛
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SOLAR COLLECTOR SELECTION
SOLAR SKIES SS-16 FLAT PLATE SOLAR COLLECTOR
Collector type: Glazed Flat Plate
Gross Area: 15.45 ft2
SRCC Efficiency Equation:
= 0.687 – 0.59833 (P/G) – 0.00192(P2/G)
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PV ANALYSIS
FIU-EC Panels
Charging Station
(5) Trials
(4) Hours each
Variable weather
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PV ANALYSIS
1 3 5 7 9 11 13 15 17 19 21 23 250
50
100
150
200
250
PV PowerTrial 4
Power Read Power In Power Out
Time Period (Hours)
Pow
er (W
)
1 3 5 7 9 11 13 15 17 19 21 23 2505
10152025303540
PV Voltages and AmperagesTrial 4
Voltage In (V) Voltage Out (V) Amps In (A) Amps Out (A)
Time Period (Hours)
Qua
ntity
Mea
sure
d
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PV PANELS SELECTION
SUPPLIER EFFIENCY COSTAnapode Solar 15.85% $2,129.13
Solar World 16.03% $2,120.00MiaSole 15.5% $2,108.27
SunPower 21.5% $2,300.00
Total Pump Power: 350 W
Design Output: 1 kW
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SYSTEM MODELING
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ABSORPTION CHILLER ANDWASTE HEAT RECOVERY COIL
ABSORPTION CHILLER HEAT RECOVERY COIL
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SOLAR PANELS
PV PANEL FLAT PLATE SOLAR COLLECTOR
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WATER STORAGE TANK AND PUMPS
80 GALLOR WATER STORAGE TANK SOLAR WATER PUMPS
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SYSTEM LAYOUT
Solar Heat
CollectorsAbsorption Chiller
Tank
AHU Recovery
Waste Heat
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PIPING LAYOUT
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PROPOSED DESIGN
Component Manufacturer Cost
Absorption Chiller Yakazi WFC-SC5 $25,000
Flat Plate Solar Collector (4) Solar Skies SS-16 $3,800
Storage Tank (80 gal) Lochnivar $2,125
Solar Pumps(5) Taco Inline
Circulators$1,500
PV Panels (3) SunPower X21-345 $2,300
Controls, Piping Varies $8,000TOTAL $41,675
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PROTOTYPE
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PROTOTYPE
Component CostSolar Evacuated Tubes $300
Piping $100PV Panels $150
Circulator Pumps $100Misc – Display/Controls/
Parts/Wiring$300
TOTAL $950
GENERATOR
ABSORBER
CONDENSER
EVAPORATOR
W.H.R
SOLAR PUMP
SOLAR WATER HEATING SYSTEM
EVACUATED TUBE DEMO
PV PANEL
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STANDARDS
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STANDARDS
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STANDARDSSystem Component Design Standard Used Standard Description Absorption Chiller:
WFC-SC5UL Listed Available Listing
NEM4 Cabinet Rating
Solar Water Heating:Solar Skies SS-16
ISO/IEC 17065 Accreditation
SRCC OG-100Operating Guidelines and
Minimum StandardsCertification #: 2011050J
Thermal Storage Tank ASME Sec. VII U
PV Panels:SunPower X21-345
UL 1703; IEC 61215; IEC 61730 Standard Tests
ISO 9001(2008); ISO 14001(2004) Quality Tests
RoHS; OHSAS 18001(2007) EHS ComplianceIEC 62716 Ammonia TestIEC 61701 Salt Spray Test
1000V PID TestCEC; UL; TUV; MCS Available Listings
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CONCLUSIONAccurate engineering analysis
Achieved goals
Provided effective renewable energy technology
Collected and recycled waste heat
Used thermal radiation to heat water and generate electricity
Intended future design
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RECOMMENDATIONS
Hybrid Panels
Increase Efficiency; Reduce Cost
Increase Portability; Reduce Size
Install absorption chiller to test
Increase PV panel efficiency
Improve thermal storage
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QUESTIONS?
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THANK YOU!