title: Heat-stop structure design with high cooling efficiency for large ground-based solar telescope.
abstract: A heat-stop is one of the most important thermal control devices for a large ground-based solar telescope. For controlling the internal seeing effect, the temperature difference between the heat-stop and the ambient environment needs to be reduced, and a heat-stop with high cooling efficiency is required. In this paper, a novel design concept for the heat-stop, in which a multichannel loop cooling system is utilized to obtain higher cooling efficiency, is proposed. To validate the design, we analyze and compare the cooling efficiency for the multichannel and existing single-channel loop cooling system under the same conditions. Comparative results show that the new design obviously enhances the cooling efficiency of the heat-stop, and the novel design based on the multichannel loop cooling system is obviously better than the existing design by increasing the thermal transfer coefficient.
authors.forename: Yangyi
authors.initials: Y
authors.lastname: Liu
authors.forename: Naiting
authors.initials: N
authors.lastname: Gu
authors.forename: Changhui
authors.initials: C
authors.lastname: Rao
authors.forename: Cheng
authors.initials: C
authors.lastname: Li