A case of study of a concentrating solar power plant with unfired Joule-Brayton cycle

Thesis Overview

<p> <b>1.0 INTRODUCTION</b></p><p><b>1.1 BACKGROUND STUDY</b>&nbsp;</p><p>The solar source, as known, is not a resource that ensures regularity of energy production; consequently, its random nature leads to the search of systems able to capture the incident energy on the terrestrial sphere in an effective and continuous manner. A particular category of systems that are suitable for this application and are currently being developed in installations at an experimental stage [1] [7], or in certain cases also commercial [2] are known as concentrating solar Brayton cycle. They are promising in term of efficiency, low emissions and limited consumption of cooling water. <br></p><p> To compensate the lack of thermal power during the clouds transient, generally in this kind of systems fuel is used by combustors to make always at nominal values the operating point. In this article the possibility of combining an innovative control system for a solar concentrator closed intercooled regenerated Brayton cycle, is analysed. Among the expected benefits of such a system, there is a good energy yield, which is almost constant regardless of the intensity of solar radiation, without the emission of greenhouse gases. This technology, in fact, avoids the use of combustors, and thus it increases the heat energy from fossil fuels, ensuring, at the same time, a large margin of regulation&nbsp;</p><p>&nbsp; Nomenclature&nbsp;</p><p> Product of heat exchange coefficient global for the exchange surface&nbsp;</p><p>Avg  Average value calculate for every months Opt&nbsp;</p><p>Opt  Optimal value i Represent the number of the month on thesum ܲ&nbsp;</p><p>P. Average pressure of the air on cycle&nbsp;</p><p>Vc  Volume control MW Molecular weight of the air&nbsp;</p><p>R  Universal constant of ideal gases&nbsp;</p><p>T  Average temperature of the air in the principal cycle&nbsp;</p><p>TIT  Temperature Intel Turbin <br></p>