Modeling of Direct Steam Generation in Parabolic Trough Solar Collectors

The process of direct steam generation was studied in this work within a parabolic trough solar collector in order to generate electricity. The study was based on the equations of a two phase flow to study heat transfer in the collector's tube. The study showed a possibility to reach an effective model to study the performance of this type of solar collectors which will aid in the understanding of the working principle of power plants and to research further towards new control strategies of solar power plants or towards the hybridization with other types of power plants.

Choosing the Optimal Economic Size of the Batch Closed Digester Providing with Solar Energy During Thermophilic Anaerobic Digestion

This research aims to study the effect of the digester size on its thermal requirements in order to reach the optimal economic size to him. Where were studied a batch closed digester with solar collector, where he was measuring a thermal requirements at the same ambient conditions with the change of the size of this digester, in order to note the relative change of the heat requirements, and to get the optimal size that requires the least amount of energy in thermophilicanaerobic digestion.