| Titre : | Experimental and numerical analyses of a pressurized air receiver for solar-driven gas turbines (2012) |
| Auteurs : | I. Hischier, Auteur ; P. Leumann, Auteur ; A. Steinfeld, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME. Journal of solar energy engineering (Vol. 134 N° 2, Mai 2012) |
| Article en page(s) : | 08 p. |
| Note générale : | solar energy |
| Langues : | Anglais |
| Index. décimale : | 621.47 |
| Tags : | solar-driven gas turbines ; solar radiation ; numerical analysis |
| Résumé : | A high-temperature pressurized air-based receiver for power generation via solar-driven gas turbines is experimentally examined and numerically modeled. It consists of an annular reticulate porous ceramic (RPC) foam concentric with an inner cylindrical cavity-receiver exposed to concentrated solar radiation. Absorbed heat is transferred by combined conduction, radiation, and convection to the pressurized air flowing across the RPC. The governing steady-state mass, momentum, and energy conservation equations are formulated and solved numerically by coupled finite volume and Monte Carlo techniques. Validation is accomplished with experimental results using a 3 kW solar receiver prototype subjected to average solar radiative fluxes at the CPC outlet in the range 1870–4360 kW m−2. Experimentation was carried out with air and helium as working fluids, heated from ambient temperature up to 1335 K at an absolute operating pressure of 5 bars. The validated model is then applied to optimize the receiver design for maximum solar energy conversion efficiency and to analyze the thermal performance of 100 kW and 1 MW scaled-up versions of the solar receiver. |
| DEWEY : | 621.47 |
| ISSN : | 0199-6231 |
| En ligne : | http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000002021003000001&idtype=cvips&gifs=Yes&ref=no |
