EVALUATION OF A SPRING/FALL-MARECO

摘要

One problem associated with solar energy is that the heating demand is largest during the winter, while the solar supply is largest during the summer. In order to contribute to the space heating during spring and fall, a relatively large collector area is needed. This will, however, increase the risk of overheating during the summer. To avoid this problem, a special collector, the "Spring/Fall-MaReCo", has been constructed. The purpose of a MaReCo is to reduce the costs for solar energy by using internal reflectors. The collector consists of a parabolic reflector trough with a bifacial absorber fin. The shape of the reflector affects the collector performance and the Spring/Fall-MaReCo is designed to suppress the energy output during the summer. In this way a larger collector area can be installed in order to increase the solar fraction of the system without causing overheating. The paper presents results from the collector evaluation.