Reliability analysis of Solar-Gas Hybrid Receivers for central tower plants
Silva Pérez, Manuel Antonio
Blázquez Gámez, Antonio
Ruiz Hernández, Valeriano
|Department||Universidad de Sevilla. Departamento de Ingeniería Energética
Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras
|Published in||Energy procedia, 69, 1558-1567.|
|Abstract||A novel Solar-Gas Hybrid Receiver (SGHR) that combines the function of a solar receiver and a gas boiler in a single device is
presented. This concept requires less equipment and maintenance compared to the Solar Gas ...
A novel Solar-Gas Hybrid Receiver (SGHR) that combines the function of a solar receiver and a gas boiler in a single device is presented. This concept requires less equipment and maintenance compared to the Solar Gas Hybrid (SGH) concept, in which the boiler and the solar receiver (SR) are independent devices. The economic benefit is attributed to the increased sharing of infrastructures. Additionally, it has less thermal stress, cycles and shocks, which reduce the failure risk. However, the additional benefit in the reliability of these receivers has not been analyzed so far. In this work, a mathematical model of SGHR is presented. It determines the stress in steady state which is used to estimate the allowable transient stress in order to achieve the required 30 years life design. The results show that the SGHR is exposed to lower thermal stress due to much better temperature distribution. Moreover the higher absorber heat flux of SGHR is translated in a higher mechanical stress with could jeopardizes the durability. However the reduced number of cycles and the lower thermal stress of a SGHR allows higher transient stresses than the conventional tube type solar receiver, which lead to more reliable and efficient designs.
|Cite||Setien, E., Frasquet, M., Saliou, G., Silva Pérez, M.A., Pinna, G., Blázquez Gámez, A. y Ruiz Hernández, V. (2015). Reliability analysis of Solar-Gas Hybrid Receivers for central tower plants. Energy procedia, 69, 1558-1567.|