Performance enhancement of the photovoltaic cells system by using the pneumatic routers
Solar photovoltaic modules are of immense benefits to ordinary people in terms of independent energy solutions and conventional fuel savings. However, due to the inherent drawback of lower efficiencies per unit area, these technologies adoption rates are very slow and face resistance from dome...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2021
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/4131/1/24p%20AYAD%20JASIM%20JABER.pdf http://eprints.uthm.edu.my/4131/2/AYAD%20JASIM%20JABER%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/4131/3/AYAD%20JASIM%20JABER%20WATERMARK.pdf |
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| Summary: | Solar photovoltaic modules are of immense benefits to ordinary people in terms of
independent energy solutions and conventional fuel savings. However, due to the
inherent drawback of lower efficiencies per unit area, these technologies adoption rates
are very slow and face resistance from domestic consumers for widespread acceptance.
Thus, solar photovoltaic thermal hybrid technology was suggested, producing
electrical and thermal output from the same unit area. Unfortunately, the lower
individual efficiencies of the PV/T collector compared to their individual technologies
hinders the potential advantages of this hybrid technology. This is due to the low solar
energy absorption and high thermal resistance between the PV cell and the cooling
medium. This study aims to develop a novel photovoltaic thermal collector to evaluate
PVT performance using three rib configurations with pneumatic guiding devices. This
thereby reduced thermal resistance and improved performance using different angles
to increase system efficiency and reduce thermal losses resulting from increased
temperature. The channel was developed and designed in the new model in three
phases to study the improvement of heat transfer. The first phase is to test the
simulation of the pneumatic routers numbers in the ribs, while the second phase is to
test the simulation of the ribs numbers in the channel. Simulation analysis was
conducted using 3D simulation by ANSYS-Fluent software to determine the optimum
design of configurations in terms of the airflow channel. The results best from the
simulation test indicate that the PVT complex with seven polygons and five vectors
was the best design. The simulation results are shown in a combined PVT efficiency
of 70.86 % and electrical PVT efficiency of 11.22% with a mass flow rate of 0.17 kg/s
and solar irradiance of 1000 W /m². In the third phase, three different angles were
chosen for pneumatic routers tested experimentally to determine the best angle. All
configurations were set and tested experimentally outdoor under the Iraq climatic
conditions to ASHRAE standard at different air mass flow rates. Experimental results of a PV inboard consisting of pneumatic ribs and angle guides
with highest daily performance and electrical and thermal efficiency at angle guides
of 30 ° compared to 45 ° and 15 ° and an empty PVT collector tube at air mass flow
rate of (0.08- 0.17) kg/s. A good agreement was obtained when the 3D simulation and
experimental results were compared. It was the average difference in the outlet air
temperatures obtained in the numerical and experimental results from 6.18 % to
6.47 % and of the electrical and thermal efficiency from 5.25 % to 6.37 % respectively |
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