Performance of Solar Air Collector-Thermoelectric Hybrid System

International Conference on Sustainable Energy and Green Technology 2018

能源学;生态环境科学

Ewe, W.E.^1 ; Fudholi, A.^1 ; Yen, C.H.^1 ; Asim, N.^1 ; Sopian, K.^1

Solar Energy Research Institute, National University of Malaysia, Malaysia^1

关键词: Electrical efficiency;    Mass flow rate;    Maximum temperature;    Overall efficiency;    Performance testing;    Solar air collector;    Stand -alone;    Thermal efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/268/1/012071/pdf
DOI  :  10.1088/1755-1315/268/1/012071

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Solar collectors are technologies which using sunlight to collect heat energy. In this study, solar air collector-thermoelectric hybrid systemis designed and constructed. Performance testing is conducted in the lab. The size of this hybrid system is 97.5 × 59 × 12 cm. The manipulating factor is the mass flow rate which is fixed at 0.033, 0.0385, 0.044, 0.0495 and0.055 kg/s. The intensity of solar radiation is set at 700 W/m2. Maximum temperature change (To -Ti) reaches 7.5 °C while maximum temperature change (Tback - Thollow) reaches 16.7 °C. Maximum thermal efficiency of this hybrid system reaches 79.0% at the highest mass flow rate of 0.055 kg/s. The maximum electrical efficiency reaches 5.3% at the lowest mass flow rate of 0.033 kg/s. Maximum overall efficiency reaches 79% at the highest mass flow rate. The hybrid system has better thermal efficiency than a stand-alone solar air collector. Due to the increased overall efficiency, the proposed hybrid system is anticipated to promote wider application of thermoelectric hybrid system.