TY  - JOUR
AV  - none
N1  - cited By 42
SP  - 281
TI  - Thermal performance study of a multi-pass solar air heating collector system for drying of Roselle (Hibiscus sabdariffa)
SN  - 09601481
PB  - Elsevier Ltd
EP  - 292
N2  - 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 Wmâ??2, 32.24 °C, and 0.81 msâ??1, respectively. An average drying rate of 33.57 g (kg m2 h)â??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
KW  - Drying; Economic analysis; Hemp; Humidity control; Investments; Solar energy; Wind
KW  -  Medicinal herb; Multi-pass; Payback periods; Performance; Roselle
KW  -  Collector efficiency
KW  -  economic analysis; energy efficiency; heating; herb; performance assessment; renewable resource; solar power; thermal power; wind velocity
KW  -  Hibiscus sabdariffa
ID  - scholars9295
Y1  - 2017///
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019598968&doi=10.1016%2fj.renene.2016.12.099&partnerID=40&md5=82beef1a3f3a124a273a45755b01d4ce
A1  - Kareem, M.W.
A1  - Habib, K.
A1  - Ruslan, M.H.
A1  - Saha, B.B.
JF  - Renewable Energy
VL  - 113
ER  -