Multi-layered and multi-dimensional suitability evaluation of tubular daylight guidance systems

Aimed at the promotion of tubular daylight guidance systems, a set of multi-layered and multi-dimensional methods for suitability are explored in this paper. Among them, "Multi-layered" refers to the staged evaluation based on different types of influencing factors, and "multi-dimensional" refers to technology performance, economic benefit, and human satisfaction, considering different concerns of national standards, developers, and user groups. The three layers in this method are 1) preliminary evaluation based on the pre-requisites for technology application, 2) single-dimensional evaluation based on demand and 3) comprehensive evaluation based on multi-dimensional suitability. In layer 1, screening principles and screening methods are formulated; in layer 2, the weight of the evaluation index is obtained by the binary comparative analysis method based on the expert questionnaire, and the evaluation result is given by the scoring method; and in layer 3, the TOPSIS (Technique for Order reference by Similarity to an Ideal Solution) is used to obtain the queueing index value, and the weights are calculated by combining subjective and objective methods. The final evaluation is obtained by the linear weighted sum method and exponential evaluation baseline method. The tubular daylight guidance systems in a teaching building of a university in Tianjin were taken as an analysis case to demonstrate the application of this method. The results indicate that the weighted final evaluation value of the case is 0.16 and the application of case is "relatively appropriate". This approach achieves the multi-dimensional evaluation of the suitability of tubular daylight guidance systems and makes the evaluation more reasonable.