A line-focused solar furnace(LSF) operated by the Institute of Electrical Engineering(IEE), with power over 30 kW and peak concentration ratio exceeding 100, has been constructed in Yanqing, Beijing, to support more possible solar thermal experiments. In this paper, the approach for the optical design and the preliminary configuration of the facility are described in detail. Using the validated Monte Carlo ray tracing(MCRT) method, the parameters of the main components are determined as follows: the concentrator is a parabolic trough with the aperture of 11.983 m and height of 4.645 m; two sets of heliostats operate collaboratively to fully illuminate the concentrator for sufficient working hours all year round. The LSF's working performance is evaluated on two kinds of receiver surface. The results on a typical day indicate its great potential for the various applications.

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