SU1081389A1 - Solar electric station - Google Patents

Abstract

A SOLAR ELECTRIC POWER STATION, containing installed in several rows orientable heliostats, reflecting solar radiation on the receiver, characterized in that, in order to increase efficiency and simplify the process of orienting the heliostats, between the heliostats and the receiver are installed at an angle of 5-20. foclines or focons with a parametric angle to one another, and the angle between the normals to the heliostats, located in the outermost rows, is equal to a pair of the metric angle.

Description

one

The invention relates to the conversion of solar energy into electrical energy, in particular to the design of solar power plants with concentrators.

A solar power plant is known, containing heliostats installed in several rows, reflecting solar radiation on the receiver. The beam from all heliostats is collected at the receiver and the radiation concentration is equal to the number of heliostats in the Cl power station.

A disadvantage of the known power station is the great complexity of the manufacture and operation of the receiver installed on the farm at a high altitude, in addition, the low utilization rate of the heliostato area and the receiver surface. During the movement of the sun, only part of the heliostats are used in the morning, afternoon and evening hours.

The purpose of the invention is to increase the efficiency and simplify the process of orienting heliostats.

The goal is achieved by the fact that between the heliostats and the receiver are set at an angle of 5-20 one to another foclines or focons with a parametric angle of 10-30 °, and the angle between the normals to the heliostats located in the extreme rows is equal to

parametric angle.

I

Figure 1 shows a schematic diagram of a solar power plant; Fig. 2 is an optical circuit; Figure 3 shows the optical scheme of the solar power plant for the rising sun; 4 is the same for the sun at the zenith.

The solar power plant contains installed in several rows 1-8 oriented heliostats 9 reflecting solar radiation on the receiver 10. Between the heliostats 9 and the receiver 10 are installed at an angle ft «5–20 one to another foclines I1 and 12 with a parametric angle U 10-30 °, and the angle between the normals n and n, j to the heliostats 9, located in extreme rows 1 and 8, is equal to the parametric angle y.

The choice as an additional reflecting device of the focline or focon is determined by the type of receiver.

Heliostats 9 are installed in several rows in the direction from the west.

892

facing east on the mountainside and oriented south. The receiver 10 is located in the focal region at the exit of the foclines, the length of which is equal to one of the dimensions of the heliostats.

FIG. 2-4, the following angles are indicated: 9 — the angle between the normal to the midplane plane and the direction of radiation from the heliostat to the focklin; oi and o (.j2 angles, respectively, between normal p and n and horizontal plane; - height of the sun above the horizon.

Angle between normals and the direction of radiation reflected from the geostat to the focline is equal to ", and the angle between the normal n and the direction of the radiation reflected to the focline is equal to

From the optical scheme of the solar power plant for the rising sun (FIG. 3) it follows that

, -, If

    b

Similarly, from the optical scheme l of the sun at the zenith (FIG. 4), it follows that

- (GU, p

; o6,

2 2 -Y

PP normal operation of the power plant is necessary to ensure that

Solar power works as follows.

Solar radiation falls on heliostats 9, which direct a concentrated converging beam to the foclines 11 and 12. At the same time, the radiation is re-concentrated by the foclines P and 12 and falls on the radiation source 10

Installing foclines with a parametric angle of 0-30 ° at an angle to one another equal to / J 5-20 allows increasing the concentration of solar energy on the surface of the receiver or reducing the area of heliostats while maintaining the concentration. In this case, the total area of heliostats can exceed the area of mid-locks of foclines by 2-200 times.

Partial transfer of the function of a concentrator in the form of a field of heliostats to a fixed concentrator in the form of a focli

Claims (1)

A SOLAR POWER PLANT containing orientable heliostats installed in several rows, reflecting solar radiation on the receiver, characterized in that, in order to increase the efficiency and simplify the process of orienting the heliostats, between the heliostats and the receiver are installed at an angle of 5-20 °. one to the other foclines or focons with a parametric angle of 10-30 °, and the angle between the normals to the heliostats located in the extreme rows is equal to the parametric angle.