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Sains Malaysiana 42(9)(2013): 1319–1325
Performance Study of Air-based Photovoltaic-thermal (PV/T) Collector with Different Designs of Heat Exchanger
(Kajian Prestasi Pengumpul Fotovoltan-terma (PV/T)
Berasaskan Udara dengan Beberapa Reka Bentuk Penyerap Haba)
Mohd. Yusof Hj. Othman*, Kamaruzzman Sopian,Baharuddin Yatim & Hafidz Ruslan
Institut Penyelidikan Tenaga Suria (SERI). Universiti
Kebangsaan Malaysia
43600 Bangi, Selangor, D.E. Malaysia
Faridah Hussain
Makmal Metrologi Kebangsaan, SIRIM Berhad, 43900 Sepang, Selangor,
D.E.Malaysia
Diserahkan: 26 November 2012/Diterima: 2 Februari 2013
ABSTRACT
Three different designs of heat exchanger, V-groove, honeycomb and
stainless steel wool had been tested to study their effectiveness in improving
the overall performance of a photovoltaic/thermal (PV/T) air base solar
collector. Heat exchangers were installed horizontally into the channel located
at the back side of the PV module. The system was tested at irradiance
of 828 W/m2 with
mass flow rate spanning from 0.02 kg/s to 0.13 kg/s. It was observed that at
mass flow rate of 0.11 kg/s, the maximum thermal efficiency of the system with
V-groove is 71%, stainless steel wool is 86% and honeycomb is 87%. The
electrical efficiency of the systems is 7.04%, 6.88% and 7.13%, respectively.
The experimental results showed that honeycomb design is the most efficient
design as heat exchanger. The design which is simple and compact is suitable
for building integration.
Keywords: Electrical efficiency; heat exchanger;
photovoltaic/thermal; thermal efficiency
ABSTRAK
Tiga penyerap haba dengan reka bentuk yang
berbeza iaitu lengkuk-V, sarang lebah dan serabut keluli tahan karat telah
diuji untuk mengkaji keberkesanannya bagi menambahbaik prestasi keseluruhan pengumpul
fotovoltan terma (PV/T) berasaskan udara. Kesemua penyerap haba
dipasang secara selari ke dalam ruang bawah modul fotovoltan. Sistem
telah diuji pada keamatan sinaran 828 W/m2 dan kadar aliran jisim udara 0.02 kg/s
hingga 0.13 kg/s. Didapati, pada kadar aliran jisim udara 0.11 kg/s, maksimum
kecekapan terma untuk sistem dengan lengkuk-V adalah 71%, sarang lebah 86% dan
serabut keluli tahan karat 87%. Manakala kecekapan elektrik
pula adalah 7.04%, 6.88% dan 7.13% masing-masing. Keputusan
uji kaji merumuskan bahawa penyerap haba berbentuk sarang lebah adalah reka
bentuk penyerap haba yang paling cekap. Reka bentuknya
ringkas dan padat serta sesuai untuk diintegrasikan ke dalam bangunan.
Kata kunci: Fotovoltan/terma; kecekapan
elektrik; kecekapan terma; penyerap haba
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*Pengarang untuk surat-menyurat; email: myho@ukm.my
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