Thermal Performance Improvement of Solar Parabolic Dish System Using Modified Spiral Coil Tubular Receiver

Figure 3

Streamlines of flow through coil of (a) three convolutions, (b) four convolutions, (c) five convolutions, and (d) velocities of streamlines at different positions of coil with varying number of convolutions.

(a)

(b)

(c)

(d)