TY - JOUR
T1 - Thermal performance enhancement of an evacuated tube solar collector using graphene nanoplatelets nanofluid
AU - Iranmanesh, Soudeh
AU - Ong, Hwai Chyuan
AU - Ang, Bee Chin
AU - Sadeghinezhad, Emad
AU - Esmaeilzadeh, Alireza
AU - Mehrali, Mohammad
PY - 2017
Y1 - 2017
N2 - In this study, the effect of graphene nanoplatelets (GNP)/distilled water nanofluid on the thermal performance of evacuated tube solar collector (ETSC) water heater was experimentally investigated. The mass percentage of GNP was considered at 0.025, 0.5, 0.075 and 0.1 wt%. The physical and thermal properties of the GNP nanofluids including stability, specific heat capacity, viscosity and thermal conductivity were investigated. The thermal efficiency tests on the solar collector were carried out for varying volumetric flow rate of 0.5, 0.1, and 1.5 L/min while the ASHRAE standard 93–2003 was considered to calculate the efficiency of the collector. The results indicated that the solar collector thermal efficiency gave enhancement up to 90.7% at a flow rate of 1.5 L/min when the GNP nanofluid was used as an absorption medium. The results indicated that by increasing the mass percentage of nanoparticles, thermal energy gain also increases, reaching a higher outlet temperature of the fluid when graphene nanosheets are used.
AB - In this study, the effect of graphene nanoplatelets (GNP)/distilled water nanofluid on the thermal performance of evacuated tube solar collector (ETSC) water heater was experimentally investigated. The mass percentage of GNP was considered at 0.025, 0.5, 0.075 and 0.1 wt%. The physical and thermal properties of the GNP nanofluids including stability, specific heat capacity, viscosity and thermal conductivity were investigated. The thermal efficiency tests on the solar collector were carried out for varying volumetric flow rate of 0.5, 0.1, and 1.5 L/min while the ASHRAE standard 93–2003 was considered to calculate the efficiency of the collector. The results indicated that the solar collector thermal efficiency gave enhancement up to 90.7% at a flow rate of 1.5 L/min when the GNP nanofluid was used as an absorption medium. The results indicated that by increasing the mass percentage of nanoparticles, thermal energy gain also increases, reaching a higher outlet temperature of the fluid when graphene nanosheets are used.
KW - Evacuated tube solar collector
KW - Graphene nanoplatelets
KW - Nanofluid
KW - Thermal efficiency
KW - Thermo-physical properties
UR - http://www.scopus.com/inward/record.url?scp=85024103877&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2017.05.175
DO - 10.1016/j.jclepro.2017.05.175
M3 - Article
AN - SCOPUS:85024103877
SN - 0959-6526
VL - 162
SP - 121
EP - 129
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -