Solar Chimney and Power Tower Techniques for Power Production in Nasiriya City

Abstract

The solar chimney and power tower are two of modern promised energy which can develop by
low losses, simplicity and high power.
In this paper, the solar chimney and fossil fuel power tower parameters are studied by using
theoretical equations in computational fluid dynamics CFD that substituted in some computer
programs such as MATLAP and FLUENT codes with additional related expressions. Five
different models are used in this paper (Chimney height is: 12, 15, 20, 25, and 35 meter),
(Diameter of collector base is: 5, 8, 10, 15, and 20 meter). The effect of inlet collector height,
collector absorbability, solar radiation, ambient temperature, solar collector thickness and solar
collector tilt angle are studied to find the other parameters and properties such as velocity
distribution, power and efficiency of system. The erecting of power turbine is predicted by
findings the velocity distribution between the base and chimney assembly. The numerical
analysis was presented by using GAMBIT and FLUENT 6.3 to predict that high velocity at the
expansion of chimney near the center of base – chimney bond position because of low density of
air as a result to solar radiation flux (and burned gases cover collector in case of using the
chimney for combustion of gases in oil refineries).. This position is very suitable for promoting
and building the power turbine. The maximum power accumulated from these techniques is more
than (6.7×105 Watt) where the velocity is (17.5 m/s). The study concluded that it is easy work to
erect these chimney and power tower techniques closed to drilling and oil facilities in remote
areas. So, all factors were studied to coincide with previous papers in this field.