Comparison of three ways of controlling solar energy collection loops
Résumé
Loops for the collection of solar energy (including flat plate collectors, pipes, pumps and valves) are submitted to variable conditions; they should be correctly controlled to obtain positive and maximum efficiency. Three modes of control have been compared with the help of analytical and numerical models which simulate their transient behavior. They have been found almost equivalent from the thermal point of view, and choosing between them is likely to be done only on the basis of economical considerations.