Japan Society of Civil Engineers Annual Meeting

This paper examines the velocity distribution of updraft wind inside the concentrated solar updraft-tower. According to analyses of the traditional solar updraft-tower power plant, it has been found that when the updraft moves upward, the heat energy converts into potential energy, which causes the air temperature to decrease. Thus, this paper proposes to use concentrated sunlight to supplement the lost heat of the tower for increasing buoyant force. The flow speeds inside the various types of solar updraft-towers are simulated by the CFD calculation method, and a significant increase of flow speed is confirmed.