Experimental Study of Concentrated Solar Power on Heat Feed Water Heaters in Steam Power Plants in Iraq

Abstract

For generating power, solar energy is counted a good exporter. Iraq is located in a hot zone
with latitude from 32 degree N to 36 degree N. In Iraq, the average solar radiation is about 7
kilowatt hours / day.
In this work, central receiving tower was used to obtain steam using the available solar energy
in summer and winter. To heat the feed water heater of South Baghdad Electrical Steam Power
Plant, steam utilization for this purpose. In the project, manufacturing the central receiver
tower, which is consisting of 150 mirrors fixed upon 75 manual tracking heliostats arranged for
utilization the solar radiation concentrated on the central receiving tank (CRT). Pipes systems
were used for hot water or steam exits from receiver. In this study, the central receiver tank
(0.5m*1m) was filled with 157 liter of water. The experimental work was run for one year
from June 2015 – May 2016. The outlet temperature of water from central tower receiver was
steam for (July and August 2015) and hot water with high temperature for other months of the
year. The results obtained from our system, solar shares for heating the feed water heater of
South Baghdad Electrical Steam Power Plant up to 1.86 % and an annual average of 1.03%.
Temperature, power concentration factor and system efficient are greatly influenced by the
number of heliostats used. A sample of calculations is used to evaluate the mathematical data
of hot water and steam temperatures obtained from this study. These values are approximate
with experimental data when compared together.