Open AccessEFFECT OF ELECTROMAGNETIC FIELD ON THE THERMAL EFFICIENCY OF CONCENTRATED SOLAR COLLECTOR (EXPERIMENTAL STUDY)
Author(s) -
Karima E. Amori,
Dheyaa A. Khalaf,
Firas Mohammed Tuaimah
Publication year - 2022
Publication title -
the iraqi journal for mechanical and materials engineering
Language(s) - English
Resource type - Journals
eISSN - 2313-3783
pISSN - 1819-2076
DOI - 10.32852/iqjfmme.v22i1.584
Subject(s) - nanofluid , parabolic trough , materials science , heat transfer , thermal , electromagnetic field , magnetic field , ferrofluid , optics , mechanics , composite material , physics , thermodynamics , quantum mechanics
In this work, the effect of electromagnetic field on thermal performance of concentrated parabolic trough solar collector is studied experimentally. A two-axis tracking parabolic trough collector formed of a reflector (mirror tapes matrix), of (2m *1m), and an absorber copper tube (receiver) is designed. Water and water-based magnetic iron oxide (Fe3O4) nanofluid are used as heat transfer fluid in the collector. Three volume concentrations (0.3%, 0.5%, and 0.9%) of nanoparticles are investigated under a magnetic flux of (3.2, 4.3, 6.2, and 7.9*103 Gauss), which is installed at absorber inlet, middle, and exit. The three coils are connected to a DC-generator to control the electromagnetic field. The electromagnetic field effect on water flow in the absorber is found weak. A significant thermal improvement is figured when utilizing ferrofluid as a heat transfer fluid in the absorber. It is represented by higher temperature distributions in the absorber and higher solar collector efficiency compared with base fluid.