Abstract:
This research aimed to study the suitable operation of the two types of photovoltaic
thermal (PVT) modules such as the crystal line type with absorbed area of 1.96 m[superscript2] and the
amorphous type with absorbed area of 1.69 m[superscript2]. The experiments were set up at the Rajamangala
University of Technology Thanyaburi Pathum-Thani Thailand (latitude 14.04 and longitude
100.73). In order to compare the thermal and photovoltaic efficiencies, the experiments were tested
with the water mass flow rate of 0.01 , 0.02 and 0.03 kg/s respectively.
The experiments were tested during daytime with the solar radiation between 600-800
w/m2 and the water outlet temperature of 29-60℃. The result shown that the thermal efficiency and
photovoltaic efficiency were depended on the water mass flow rate. The suitable conditions for both
PVT used 0.03 kg/s of the water mass flow rate. The crystal line type had the thermal and
photovoltaic efficiency of 44.46 % and 13.86 % respectively, which were higher than those of the
amorphous type with 35.43% and 11.50 % respectively.
This result could be applied to control the suitable operation condition of both PVT
types. Not only, it has the highest electrical efficiency, but also it can be applied for hot water
applications as well.