TY - JOUR PB - Asian Research Publishing Network SP - 12170 AV - none N2 - This paper presents a mathematical model and discusses the influence of several convection heat transfer correlations and thermal efficiency schemes that have been commonly discussed in the literature regarding the performance of solar updraft system to choose the optimum forms conforming to the investigational result of the Spanish prototype. Hence, it is evident from the results of the study that the heat transfer coefficient correlation utilised by Kröger and Burger in 2004 was so close to the Manzanares experimental data. Also, the thermal efficiency equation used by Schlaich in 1996 is recommended to calculate the solar air heater collector's efficiency. ©2006-2016 Asian Research Publishing Network (ARPN). SN - 18196608 IS - 20 TI - Comparative critique on the performance evaluation of a solar - air heater for natural updraft solar system ID - scholars7783 EP - 12175 JF - ARPN Journal of Engineering and Applied Sciences VL - 11 Y1 - 2016/// A1 - Ismaeel, A.A. A1 - Al-Kayiem, H.H. A1 - Baheta, A.T. A1 - Aurybi, M.A. N1 - cited By 0 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994220059&partnerID=40&md5=d8624c4fd9d0df1c065d90c9c713f51a ER -