Redirigiendo al acceso original de articulo en 22 segundos...

Dynamic model of a small scale concentrating solar cooker with rock bed heat storage

Karidewa Nyeinga    
Ole J Nydal    
Denis Okello    
Eldad J.K.B. Banda    


This study presents a dynamic model for a concentrating solar energy collector with an integrated rock bed heat storage system. The model is based on numerical integration of a set of conservation equations for mass, momentum and energy of the heat carrier, the rock pebbles and the walls. The heat carrier is compressible air. Numerical solutions are implemented based on implicit time integration without iterations. Stability problems at large time steps do not occur but the accuracy is reduced. The model predicts pressure, velocity, density and temperatures of the fluid, rock bed and wall in time and along the bed. The model is validated with experimental results in a laboratory setting on temperature profiles during charging and discharging of rock bed heat storage. The intention is that the model shall serve as a computational tool for upscaling of air based concentrating solar energy systems with rock bed heat storage units.

 Artículos similares

JOAN GUIMERÀ     Pág. 57 - 66

Viet-Chinh Mai, Xuan-Bach Luu, Cong-Binh Dao, Dinh-Viet Le     Pág. 256 - 264
Most of the structures that are damaged by an explosion are not initially designed to resist this kind of load. In the overall structure of any building, columns play an important role to prevent the collapse of frame structure under blast impact. Hence,... ver más

Srikant Srivastava, P.N. Dwivedi, D.M. Vinod Kumar     Pág. 265 - 270
Fuel Flow controller based ramjet propulsion system have a flexibility to change rocket velocity depending on guidance requirement by controlling the fuel flow rate as a function of atmospheric conditions like altitude, Mach no. and angle of attack. In t... ver más

Jiayu Tang, Xiangmin Li, Jinjin Dai, Ning Bo     Pág. 374 - 382
As a challenging and highly complex problem, the trajectory planning for unmanned combat aerial vehicle (UCAV) focuses on optimising flight trajectory under such constraints as kinematics and complicated battlefield environment. An online case-based traj... ver más

Ilango Mahalingam, Chandramouli Padmanabhan     Pág. 460 - 464
Off-road vehicles achieve their mobility with the help of a track system. A track has large number of rigid bodies with pin joints leading to computational complexity in modelling the dynamic behaviour of the system. In this paper, a new idea is proposed... ver más