Open AccessPerformance Evaluation of Absorber Rod Type Solar Air Collector
Author(s) -
Zainab Saberi,
Ahmad Fudholi,
Zahari Ibarahim,
Kamaruzzaman Sopian
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/268/1/012073
Subject(s) - intensity (physics) , air mass (solar energy) , mass flow rate , radiant intensity , materials science , volumetric flow rate , thermal , heat transfer , solar energy , mass flow , radiation , optics , mechanics , thermodynamics , physics , electrical engineering , boundary layer , engineering
Solar air collector is a device that collects heat energy from the sun where the solar energy is converted to heat energy. A good solar air collector is when it can absorb maximum heat and can reduce as minimum as heat loss possible. In this study, a solar air collector device has been designed and constructed by attaching aluminium rod of 210 pieces with height 2 cm on the absorber plate to increase the heat transfer surface area. Apart from that, fin also built in airway to increase transfer of heat from plate absorber to air flow. There are 4 parameter of intensities value and mass flow rate is changed in this experiment which are 101.5 W/m 2 , 302.4 W/m 2 , 530.6 W/m 2 and 720.0 W/m 2 while for the mass flow rate is 0.0236 kg/s, 0.0340 kg/s, 0.0452 kg/s and 0.0584 kg/s. The aim of this study was to investigate the effect of mass flow rate and the solar intensity in improving the efficiency of thermal solar collectors. The results showed that the efficiency is between 57.2% to 77.4%. Maximum thermal efficiency mass flow rate recorded at 0.0584 kg/s with radiation intensity of 530.6 W/m 2 . Changes in temperature, ΔT are decreased when mass flow rate is increased which 19.0°C to 1.2°C is depending on the solar radiation intensity.