# What is a parabolic collection?

## What is a parabolic collection?

A parabolic trough is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror. This solar energy collector is the most common and best known type of parabolic trough.

## What is parabolic dish collector?

A parabolic dish collector is a concentrating solar collector that is similar in appearance to a large satellite dish, but has mirror-like reflectors and an absorber at the focal point.

How do you make a parabolic surface?

The easiest way is to cut and fold a flat sheet into a parabolic dish. Then glue a layer of aluminum foil on its inner surface, for reflectivity. The flat sheet can be as cheap as cardboard. However water resistant material, such as plastic or metal, will last longer.

What does a parabolic curve look like?

In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped. The “latus rectum” is the chord of the parabola that is parallel to the directrix and passes through the focus. Parabolas can open up, down, left, right, or in some other arbitrary direction.

### How is the design of the parabolic trough collector done?

The design was done using computer-aided design and manufacturing. The results of the evaluation to determine the thermal performance of the parabolic trough collector have a maximum outlet temperature of 47.3 °C for a direct solar radiation of 783 W/m 2 at a flow rate of 0.200 L / min. demonstrative prototype.

What is a parabolic dish collector (PDC)?

Parabolic dish collectors (PDC) are composed of a concave mirror which concentrates the direct solar radiation in a single point receiver and use a two axis solar tracking system which constantly tracks the sun. M.J. Blanco, S. Miller, in Advances in Concentrating Solar Thermal Research and Technology, 2017

What is the exergy efficiency of the two parabolic collectors?

Even though exergy efficiencies of the two parabolic collectors are 55.2% and 59.95%, their contribution to overall exergy destruction is the highest with respect to other components. The HTSE system and hydrogen compression system also show high ExDF.

#### What is the structure of a solar collector?

The collector consists of a 6.7-m diameter, fully (2-axis) tracking parabolic dish, which focuses sunlight into a cavity-type absorber. The absorbed thermal energy is carried away by an organic (petroleum based) liquid, named Therminol 66. The reflector consists of a toric parabola (Fig. 10 ).

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