Energy, Exergy Efficiency and Thermal-Electrical Production Assessment for an Active Water Heating System Using Four PV/T Module Models

In order to objectively reflect the energy utilization performance of an active water heating system (AWHS) using photovoltaic/thermal (PV/T) modules, this study proposes a new evaluation method based on energy efficiency, exergy efficiency and thermal-electrical output of a system in year-round wea...

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Bibliographic Details
Published in:Energies (Basel) 2022-12, Vol.15 (24), p.9634
Main Authors: Hoang, Viet Van, Le, Hiep Chi, Nguyen, Bao The
Format: Article
Language:English
Subjects:
active water heating system
Alternative energy sources
Analysis
Climate change
Electricity
Energy efficiency
Energy utilization
Equipment and supplies
Exergy
exergy efficiency
Experiments
Heat exchangers
Heat loss
heat-electricity output
Heating
Hot-water heating
Methods
numerical simulation
Photovoltaic power generation
photovoltaic/thermal (PV/T) module
Photovoltaics
Radiation
Solar energy
Thermodynamic efficiency
Thermodynamics
Water flow
Water heating
Water supply
Water tanks
Weather
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Summary:In order to objectively reflect the energy utilization performance of an active water heating system (AWHS) using photovoltaic/thermal (PV/T) modules, this study proposes a new evaluation method based on energy efficiency, exergy efficiency and thermal-electrical output of a system in year-round weather conditions. Four samples of PV/T modules were surveyed to compare and evaluate the effectiveness of the system, called MD1, MD2, MD3 and MD4, respectively. The simulation program was developed to suit four types of PV/T modules and MATLAB was used as the programming language. The water flow through the four PV/T module samples and the hot water tank volume were investigated for the highest exergy efficiency of the system. The final results illustrate that in the weather conditions of Ho Chi Minh City, Vietnam, the system has the highest energy efficiency, exergy efficiency and thermal output when using MD1 with 57.85%, 15.67% and 2.93 kWh/m2/day, respectively, while the system has highest electrical output when using MD3 with 0.8 kWh/m2/day. In addition, under stable conditions ignoring heat loss, MD1 has the highest thermal efficiency with 54.85% and MD3 type has the highest electrical efficiency with 13.67%.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15249634