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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

Experimental and simulation performance investigation of a ... · Experimental methodology Experimental and simulation performance investigation of a hy brid PV/T solar panel Same

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Page 1: Experimental and simulation performance investigation of a ... · Experimental methodology Experimental and simulation performance investigation of a hy brid PV/T solar panel Same

Mihai BĂICEANU, Master’s Student

Tiberiu CATALINA, Associate Professor

Experimental and simulation performance

investigation of a hybrid PV/T solar panel

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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

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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

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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

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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.

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Experimental stand

Experimental and simulation performance investigation of a hybrid

PV/T solar panel

DURING THE EXPERIMENTAL CAMPAIGN SOUTH

Experimental set-up

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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

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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

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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.

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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

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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

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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

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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

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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

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Systems simulation

Experimental and simulation performance investigation of a hybrid

PV/T solar panel

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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

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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

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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%.

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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 !!

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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

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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

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Mihai BĂICEANU, Master’s Student

Tiberiu CATALINA, Associate Professor

Thank you for your attention !