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Mihai BĂICEANU, Master’s Student
Tiberiu CATALINA, Associate Professor
Experimental and simulation performance
investigation of a hybrid PV/T solar panel
About me
EFdeN - Mechanical Coordinator and Project Engineer Participation at SolarDecathlon DUBAI 2018
2nd world place on Construction and Engineering
2nd world place on Comfort Conditions
ASHRAE Student Branch TUCEB - President
UTCB – Master’s Student, Energy Efficiency of Building Systems
2017-2018 – UTCB Student of the Year
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Why solar energy?
Directive 2009/28/EC of the European Parliament - to increase
the share of all kinds of energy from renewable sources in the building
sector the overall EU target for Renewable Energy Sources consumption by
2030 has been raised to 32% !!
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
COMMISSION RECOMMENDATION (EU) 2016/1318 of 29 July 2016
on guidelines for the promotion of nearly zero-energy buildings and best
practices to ensure that all new buildings are nearly zero-energy buildings
Law 372/2005 accompanied by O.G. nr. 13/2016
Objectives of the study
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
PV/T
panel
PV panel
Experimental campaign of the energy efficiency of PV/T solar panels and
comparison with standard PV
Simulation study on the implementation of PV/T on nZEB
buildings – study case
Experimental methodology
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
• Same external conditions (location, tilt and orientation, irradiance, weather conditions etc) for both simple PV and PV/T panels
• Multiple research equipment's used for the experimental campaign
• 1 minute sampling time, with the data-logger: ambient temperature, PV/T
water inlet temperature, PV/T outlet temperature, PV/T temperature on the
back of the cell, PV temperature on the back of the cell, horizontal solar irradiance.
Experimental stand
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
DURING THE EXPERIMENTAL CAMPAIGN SOUTH
Experimental set-up
Experimental stand
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
• PV Analyzer IV-400 data acquisitions
• Solar PV and PV/T panels, circulation pump, water tank
• ALMEMO data acquisition
Experimental results Horizontal irradiance over time Collector temperature over time
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Solar global horizontal irradiance measured every 1 min with the pyranometer
Temperature sensors on the back of the solar cells
Experimental results Electrical power output over time Thermal power output of PV/T over time
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
The overall electricity production of the PV/T is 10.1% higher (827 Wh compared to 751 Wh).
The total thermal energy output during the day was 2.1 kWh.
Thermographic study
Time: 11:15 Average PV/T temperature: 31oC Average PV temperature: 47.3oC Solar irradiance: 706 W/m2
Ambient temperature: 19oC
Time: 11:45 Average PV/T temperature: 33.7oC Average PV temperature: 51oC Solar irradiance: 751 W/m2
Ambient temperature: 19.2oC
Time: 12:45 Average PV/T temperature: 38.5oC Average PV temperature: 56.3oC Solar irradiance: 835 W/m2
Ambient temperature: 21.8oC
Time: 13:45 Average PV/T temperature: 40.7oC Average PV temperature: 57oC Solar irradiance: 824 W/m2
Ambient temperature: 21.2oC
Time: 15:15 Average PV/T temperature: 38oC Average PV temperature: 54.3oC Solar irradiance: 672 W/m2
Ambient temperature: 21oC
Time: 15:45 Average PV/T temperature: 35.4oC Average PV temperature: 50.2oC Solar irradiance: 595 W/m2
Ambient temperature: 20.8oC
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Measurements, every 30 minutes
TESTO Infrared Camera
IR Software for image analysis
PV/T solar panel
much colder up to 16.5 oC – logical
increase of electric production
Thermographic study
• whole panel – 33.7oC • zone 1 – 27.1oC
• zone 2 – 38.6oC • zone 3 – 38.1oC
• Temperature not uniform
because of the water inlet
and outlet and the electrical connections
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Objectives of the simulation phase – Study case
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
The scope of the simulation study is to asses whether the
implementation of hybrid photovoltaic/thermal panels is
viable from a technical standpoint, considering electrical energy production, total electricity and gas
consumption and global efficiency
SOLAR HOUSE EFDEN SIGNATURE
House EFdeN Signature
• Represented Romania at SDME 2018 Dubai
• Designed for the Middle Eastern climate
• Incorporates passive strategies • nZEB building • Modular, built in 15 days
• LEED certification undergoing
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Evaluation of loads
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
3D SIMULATION MODEL HEATING/DWH and ELECTRICAL ENERGY CONSUMPTION
The electrical annual consumption of 6000 kWh
7800 kWh total heating energy demand
Systems simulation
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Systems simulation
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
The PV’s have 250W maximum power output, there are 32 modules (8 kW installed power), placed horizontally. The solar thermal panel has a 2.33 m2 absorber area, placed horizontally.
A – Glazed flat plate solar thermal collector B – Photovoltaic panels, polycrystalline
The PV/T collectors are also polycrystalline, but with 240W maximum power output. Because of the space provided by removing solar thermal collectors, in situation 2 there are 36 PV/T modules, placed horizontally.
C – Hybrid PV/T solar collectors
Systems simulation
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
The output parameters of the simulations study are:
electrical energy production of the system, solar
fraction, total (electricity and fuel) consumption and the global efficiency of the
system.
Figure 14 – Electrical energy produced by the system
Systems simulation
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
Figure 16 – Global efficiency of the systems Figure 15 – Total energy (electricity and gas) consumed by the system
The system total energy consumption (gas and electricity) is 11168 kWh/year, while for the second situation with the PV/T it is 9926 kWh/year, a significand drop of 11.1%.
Conclusions
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
The PV was hotter than the PV/T by an average of 5oC on the back of the collector
and by an average 16.5oC on the front face.
IV 400 Analyzer for PV/T and standard PV I-V electric curves every 30 minutes
Better electric energy production by 10%
Production of thermal energy in the same time !!
Conclusions
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
The simulation study showed that PV/TIt produced 5.2% more electrical energy,
while the total consumption of the system (fuel and electricity) dropped by a
significant 11.1%. Simulations are a good way to perform
parametric studies for different type of nZEB buildings
• PV/T are cheaper by 45% compared to a PV + Thermal
solar panel • Lower carbon manufacturing
emissions – better life cycle • More space on the roofs ! • Lower payback times
Future research work
Experimental and simulation performance investigation of a hybrid
PV/T solar panel
• Improvements of the PV/T collector by integrating phase changing materials (phase changing temperature of 55oC)
• Better thermal inertia of the panel with an increase of thermal production • Other experimental campaigns (comparison with mono-silicium panels,
cost analysis, carbon life cycle) • Patent at OSIM can represent a future plan
Mihai BĂICEANU, Master’s Student
Tiberiu CATALINA, Associate Professor
Thank you for your attention !
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