<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Thermal performance study of a multi-pass solar air heating collector system for drying of Roselle (Hibiscus sabdariffa)"^^ . "This article presents a study on the performance of a forced convective multi-pass solar air heating collector (MPSAHC) system assisted with granite as a sensible energy storing matrix. Experimental drying of Roselle was carried out in August 2015 at Solar Energy Research Site of Universiti Teknologi PETRONAS, Malaysia (4.385693° N and 100.979203 S). The present investigation was conducted under the daily average relative humidity, solar irradiance, ambient temperature and wind speed of 64.5, 635.49 Wm�2, 32.24 °C, and 0.81 ms�1, respectively. An average drying rate of 33.57 g (kg m2 h)�1 was achieved while the system optical efficiency, collector efficiency, drying efficiency and moisture pickup efficiency of 70.53, 64.08, 36.22 and 66.95 were obtained, respectively. MPSAHC dryer was 21 h faster with fair color retention when compared to open sun drying approach (OSDA) that was conducted together under the same weather condition. Techno economic analysis reflected a payback period of 2.14 years. However, drying efficiency could be improved if the inlet air humidity can be controlled to favor drying operation. © 2016"^^ . "2017" . . "113" . . "Elsevier Ltd"^^ . . . "Renewable Energy"^^ . . . "09601481" . . . . . . . . . . . . . . . . "M.H."^^ . "Ruslan"^^ . "M.H. Ruslan"^^ . . "K."^^ . "Habib"^^ . "K. Habib"^^ . . "B.B."^^ . "Saha"^^ . "B.B. Saha"^^ . . "M.W."^^ . "Kareem"^^ . "M.W. Kareem"^^ . . . . . "HTML Summary of #9295 \n\nThermal performance study of a multi-pass solar air heating collector system for drying of Roselle (Hibiscus sabdariffa)\n\n" . "text/html" . .