Consider a parabolic trough where the height of the reflector is identical to the height of the
Question:
Consider a parabolic trough where the height of the reflector is identical to the height of the center of the absorber, as depicted in the figure?
The concentrator width is 8 m and the absorbing tube of radius 0.5 m is centered along the focal line at a height of 2 m above the bottom of the trough. Incident sunlight hits the concentrator from a direction parallel to the line of symmetry, with an intensity of 1000 W/m2.
(a) What is the effective concentration of the concentrator?
(b) What is the acceptance angle within which all light hits the absorber??
(c) Assume that the tube carries a fluid that is heated and removes some of the incoming energy. The tube then radiates as a black body at a temperature of 150??C. Compute the net rate at which energy is collected and transferred to the fluid, for each meter of length of the trough.
Step by Step Answer:
a The effective concentration of the concentrator is 1000 Wm2 b The acceptance angle of the concentr...View the full answer
