Fig. 1. Schematic diagram of novel trough concentrator based on same parabolic mirror rotating array

Fig. 2. Schematic diagram of solar energy concentration of mirror unit n in novel concentrator

Fig. 3. Width of focal spot of each mirror unit in concentrator varying with N

Fig. 4. M_average of novel trough concentrator varying with N

Fig. 5. Focusing energy flux distribution of novel trough concentrator under different mirror parameters. (a) d₁=100 mm; (b) range of d₁ is from 200 mm to 400 nm

Fig. 6. Nephograms of local concentration ratio distribution on surface of planar receiver under different mirror parameters. (a) N=25, d₁=100 mm, f=8000 mm; (b) N=7, d₁=300 mm, f=8000 mm; (c) N=5, d₁=400 mm, f=8000 mm

Fig. 7. Transmission trajectories of solar rays in novel trough concentrator under different mirror parameters. (a) N=25, d₁=100 mm, f=8000 mm; (b) N=25, d₁=100 mm, f=6000 mm; (c) N=5, d₁=400 mm, f=8000 mm

Fig. 8. Transmission trajectories of solar rays in novel trough concentrator under different mirror parameters when rotation radius of mirror array is not equal to focal length of mirror. (a1)(a2) N=8, d₁=400 mm, f=8000 nm, R₁=9000 mm; (b1)(b2) N=8, d₁=400 mm, f=8000 mm, R₁=7000 mm; (c1)(c2) N=5, d₁=400 mm, f=8000 mm, R₁=4000 mm

Fig. 9. Focusing energy flux distribution of new trough concentrator with different mirror rotation radii and receiver positions. (a) d₁ is 100 mm and 200 mm; (b) d₁ is 400 mm

Fig. 10. Nephograms of local concentrator ratio distribution after changing mirror rotation radius and receiver position. (a) N=8, d₁=400 mm, f=8000 nm, R₁=7000 mm, H=4350 mm; (b) N=5, d₁=400 mm, f=8000 nm, R₁=4000 mm,H=1830 mm