Wind effect on the performance of solid particle solar receivers with and without the protection of an aerowindow

Numerical study on combined free-forced convection heat loss of solar cavity receiver under wind environments

“…The air velocity as well as the convection heat loss reaches the maximum value when the wind direction is parallel to the receiver aperture. In addition, the wind effect on the performance of a solid particle solar receiver (SPSR) with and without the protection of an aerowindow, which is employed as the thermal storage for solar thermo-chemical hydrogen production, is investigated numerically [11]. The cavity thermal efficiencies and the exiting temperature of the solid particles have been calculated and analyzed for different wind conditions.…”

Parametric study on the performance of a solid particle solar receiver

“…Diverse chemical reaction cycles for hydrogen production are compared in scientific researches to obtain the environmentally friendly, large-scale, low cost and high efficiency process of hydrogen production (Abanades et al, 2006;Nielsen, 2005;Koroneos et al, 2004;Tan et al, 2009;Tan and Chen, 2010). The solar-driven thermo-chemical water-splitting (TCWS) cycles may be an ideal choice for hydrogen production, which requires a high temperature input to split water into hydrogen and oxygen.…”

“…The solar-driven thermo-chemical water-splitting (TCWS) cycles may be an ideal choice for hydrogen production, which requires a high temperature input to split water into hydrogen and oxygen. For example, the sulfur-iodine (S-I) cycle of hydrogen production process requires a reaction temperature of 850°C (Tan et al, 2009;Tan and Chen, 2010;Raissi, 2005, 2007). Solar central receiver systems are commonly used to concentrate the solar energy, which uses a heliostat field with large scale to reflect and focus the sunlight on a receiver located at the top of a solar tower.…”

“…Most solar receivers have an open aperture in the front to allow the concentrated sunlight to enter the cavity. However, a large amount of heat might be lost from the aperture by both convection and radiation (Tan et al, 2009;Tan and Chen, 2010). Taussig investigated the influences of a protective air-jet on solid particle solar receivers (SPRs) which reduces the convection heat loss by isolating the interiors of SPRs (Taussig, 1984).…”

“…The aerodynamic and thermal interaction between gas flow and solid particles in a three-dimensional design was investigated by Chen et al, based on the conceptual design provided by SNL (Chen et al, 2007). Tan et al conducted the investigation of wind effect on the performance of the SPRs and the protection of an aero-window formed by an air-jet (Tan et al, 2009;Tan and Chen, 2010). The development of the SPR technology has been reviewed by Tan and Chen (2010).…”