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Comparative study of three different designs of a hybrid PV/T double-pass finned plate solar air heater

  • Mohammed Mossad HegazyEmail author
  • Ahmed El-Sebaii
  • Mohammed Raafat Ramadan
  • Saad Aboul-Enein
  • Abd El-Monem Khallaf
Renewable Energy and Water Sustainability
  • 20 Downloads

Abstract

In this paper, three different designs of a hybrid PV/T double-pass finned plate solar air heater (DPFPSAH) are investigated. The PV module is used to produce electricity needed to run the pump and blow the air into the solar collector. In the first design, the PV module is placed on the absorber plate of the air heater. In the second design, the PV module is placed beside the glass cover of the air heater; while, in the third one, the PV module is completely separated from the solar collector. The effects of mass flow rate of air, flow, and fan pumping powers are studied. The top losses of the third design are found to be higher than that of the first and the second designs by average values of 7.5% and 29%, respectively. The third design of the hybrid systems has the highest overall performance. The daily thermal efficiencies of the first, second, and third designs of the hybrid systems are obtained as 53%, 27%, and 64%, respectively, at mass flow rate of 0.02 kg/s.

Keywords

Hybrid PV/T system Thermal efficiency Pumping power PV module 

Nomenclature

A

Surface area (m2)

b

Width of the heater (m)

c

Specific heat (J/kg K)

d

Depth of air channel (m)

dx

Unit length (m)

Dh

Hydraulic diameter (m)

f

Friction factor

H

Height of the fin (m)

h

Heat transfer coefficient (W/m2 K)

I

Solar radiation intensity (W/m2)

k

Thermal conductivity (W/m K)

L

Length of heater (m)

\( \dot{m} \)

Mass flow rate of air (kg/s)

Nu

Nusselt number (dimensionless)

P

Power (W)

∆P

Pressure drop (N/m2)

\( \dot{Q_u} \)

Thermal output power (W)

\( \dot{Q_p} \)

Electrical output power (W)

Re

Reynolds number (dimensionless)

T

Temperature (K)

t

Thickness of the fin (m)

Ut

Top heat losses coefficient (W/m2 K)

V

Velocity (m/s)

x

Thickness of insulating material (m)

Pr

Prandtl number (dimensionless)

t

Thickness of the fin (m)

\( {\dot{Q}}_{useful} \)

Useful electrical power (W)

\( {\dot{Q}}_{NET} \)

Net available electrical power (W)

Subscript

a

Ambient

av

Average

b

Back

c

Convective

f

Fluid

g

Glass

i

Inlet

l

Lower

o

Outlet

p

Absorber plate

r

Radiative

s

Sky, side

w

Wind

u

Upper

fr

Forced convection mode

m

Module

Greek

α

Absorptivity

τ

Transmissivity

η

Efficiency

ηc

Efficiency of the solar cell (dimensionless)

ηfin

Efficiency of the fins (dimensionless)

ηT − d

Daily thermal efficiency (dimensionless)

ηE

Electrical efficiency (dimensionless)

ηoverall

Overall efficiency (dimensionless)

ηe − h

The electrohydraulic efficiency (dimensionless)

ρ

Density (kg/m3)

μ

Dynamic viscosity (kg/m s)

ϕ

Dimensionless quantity

Notes

References

  1. Alfegi M, Sopian K, Othman M, Bin Yatim B (2008) Experimental investigation of single pass, double duct photovoltaic thermal (PV/T) air collector with CPC and fins. Am J Appl Sci 5(7):866–871CrossRefGoogle Scholar
  2. Armand P, Wouagfack N, Ngankou AL, Djongyang N, Tchinda R (2019) Electrical and exergy analysis of a simple pass photovoltaic – thermal (PV / T) air heater with slats under weather conditions of the Far Nord Region, Cameroon. Adv Appl Sci 4(2):41–51CrossRefGoogle Scholar
  3. Daughery R, Franzini J, Finnemore E (1989) Fluid mechanics with engineering applications. McGraw Hill, p 293Google Scholar
  4. Fan W, Kokogiannakis G and Ma Z (2019). Optimisation of life cycle performance of a double-pass photovoltaic thermal-solar air heater with heat pipes. Renew Energy 138:90–105CrossRefGoogle Scholar
  5. Gao W, Lin W, Liu T, Xia C (2007) Analytical and experimental studies on the thermal performance of cross-corrugated and flat-plate solar air heaters. Appl Energy 84(4):425–441CrossRefGoogle Scholar
  6. Griggs E, Sharifabad F (1992) Flow characteristics in rectangular ducts. ASHRAE Trans 98:116–127Google Scholar
  7. Guo C, Ji J, Sun W, Ma J, He W, Wang Y (2015) Numerical simulation and experimental validation of tri-functional photovoltaic/thermal solar collector. Energy 87:470–480CrossRefGoogle Scholar
  8. Hegazy A (2000a) Comparative study of the performances of four photovoltaic/thermal solar air collectors. Energy Convers Manag 41:861–881CrossRefGoogle Scholar
  9. Hegazy A (2000b) Thermohydraulic performance of air heating solar collectors with variable width, flat absorber plates. Energy Convers Manag 41:1361–1378CrossRefGoogle Scholar
  10. Ho C, Yeh H, Cheng T, Chen T, Wang R (2009) The influences of recycle on performance of baffled double-pass flat-plate solar air heaters with internal fins attached. Appl Energy 86:1470–1478CrossRefGoogle Scholar
  11. Hussain F, Othman M, Yatim B, Ruslan H, Sopian K, Anuar Z (2015) An improved design of photovoltaic/thermal solar collector. Sol Energy 122:885–891CrossRefGoogle Scholar
  12. Ibrahim A, Othman M, Ruslan M, Mat S, Sopian K (2011) Recent advances in flat plate photovoltaic/thermal (PV/T) solar collectors. Renew Sust Energ Rev 15(1):352–365CrossRefGoogle Scholar
  13. Jin G, Ibrahim A, Chean Y, Daghigh R, Ruslan H, Mat S, Othman M, Sopian K (2010) Evaluation of single-pass photovoltaic-thermal air collector with rectangle tunnel absorber. Am J Appl Sci 7(2):277–282CrossRefGoogle Scholar
  14. Joshi A, Tiwari A, Tiwari G, Dincer I, Reddy B (2009) Performance evaluation of a hybrid photovoltaic thermal ( PV / T ) ( glass-to-glass ) system. Int J Therm Sci 48:154–164CrossRefGoogle Scholar
  15. Kim J, Park S, Kim J (2014) Experimental performance of a photovoltaic-thermal air collector. Energy Procedia 48:888–894CrossRefGoogle Scholar
  16. Kostic L, Pavlovic T, Pavlovic Z (2010) Optimal design of orientation of PV/T collector with reflectors. Appl Energy 87:3023–3029CrossRefGoogle Scholar
  17. Kumar R, Chand P (2017) Performance enhancement of solar air heater using herringbone corrugated fins. Energy 127:271–279CrossRefGoogle Scholar
  18. Nahar A, Hasanuzzaman M, Rahim N (2017) Numerical and experimental investigation on the performance of a photovoltaic thermal collector with parallel plate flow channel under different operating conditions in Malaysia. Sol Energy 144:517–528CrossRefGoogle Scholar
  19. Ong K (1995) Thermal performance of solar air heaters: mathematical model and solution procedure. Sol Energy 55:93–109CrossRefGoogle Scholar
  20. Ooshaksaraei P, Sopian K, Zaidi SH, Zulkifli R (2017) Performance of four air-based photovoltaic thermal collectors configurations with bifacial solar cells. Renew Energy 102:279–293CrossRefGoogle Scholar
  21. Shan F, Tang F, Cao L, Fang G (2014) Comparative simulation analyses on dynamic performances of photovoltaic-thermal solar collectors with different configurations. Energy Convers Manag 87:778–786CrossRefGoogle Scholar
  22. Solanki S, Dubey S, Tiwari A (2009) Indoor simulation and testing of photovoltaic thermal (PV/T) air collectors. Appl Energy 86:2421–2428CrossRefGoogle Scholar
  23. Su D, Jia Y, Huang X, Alva G, Tang Y, Fang G (2016) Dynamic performance analysis of photovoltaic – thermal solar collector with dual channels for different fluids. Energy Convers Manag 120:13–24CrossRefGoogle Scholar
  24. Swinbanck W (1963) Long wave radiation from clear skies. Q J R Meteorol Soc 89:338Google Scholar
  25. Yeh H, Ho C, Hou J (2002) Collector efficiency of double-flow solar air heaters with fins attached. Energy 27(8):715–727CrossRefGoogle Scholar
  26. Yusof M, Othman H, Yatim B, Sopian K, Nazari M, Bakar A (2017) Performance analysis of a double-pass photovoltaic/thermal ( PV/T ) solar collector with CPC and fins. Renew Energy 30:2005–2017Google Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2020

Authors and Affiliations

  • Mohammed Mossad Hegazy
    • 1
    Email author
  • Ahmed El-Sebaii
    • 1
  • Mohammed Raafat Ramadan
    • 1
  • Saad Aboul-Enein
    • 1
  • Abd El-Monem Khallaf
    • 2
  1. 1.Department of Physics, Faculty of ScienceTanta UniversityTantaEgypt
  2. 2.Department of Basic ScienceMisr Higher Institute for Engineering and TechnologyMansouraEgypt

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