Minimizing the Cosine Loss in a Solar Tower Power Plant by a Change in the Heliostat Position and Number
Mahmoud Sh. Mahmoud1, Ahmed F. Khudheyer2, Qusay J. Abdul-Ghafoor3

1Mahmoud Sh. Mahmoud, Mechanical engineering department, engineering College Al-Nahrain University, Baghdad, Iraq.
2Ahmed F. Khudheyer, department, Mechanical engineering department, engineering College Al-Nahrain University, Baghdad, Iraq.
3Qusay Jihad Abdul Ghafoor, Mechanical engineering department University of technology, Baghdad, Iraq.
Manuscript received on January 26, 2020. | Revised Manuscript received on February 05, 2020. | Manuscript published on February 30, 2020. | PP: 2302-2304 | Volume-9 Issue-3, February 2020. | Retrieval Number: C5643029320/2020©BEIESP | DOI: 10.35940/ijeat.C5643.029320
Open Access | Ethics and Policies | Cite | Mendeley
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (

Abstract: Concentrating Solar Power (CSP) focuses sunlight in order to use the heat energy of the sun. In a central receiver system configuration, many mirrors (heliostats) individually track the sun and reflect the concentrated solar energy onto a receiver on top of a tower. The receiver contains the working fluid which is heated by the concentrated solar radiation. The useful energy that absorbed by the water flows through the receiver in solar tower plant depending on the angle between the solar rays and the position of heliostat in the region of work. Heliostat will reflect the incident solar radiation in the direction of the receiver founded in the top of the tower, in order to get a maximum incident solar radiation on the heliostat reflection area. Because of the cosine factor loss effect due to the sun position is variable along the day from sunrise to sunset, which must be in a minimum value, therefore an automated tracking system with dual axes as a control system with sensors had been built and used to stay the sunrays incident on the receiver, and enable the heliostat to flow the sun where it was.
Keywords: Cosine losses, Solar energy, Tower power plant, Heliostat position.