Rotary solar concentrating method based on Cassegrain reflection principle

A solar concentrating and rotating technology, used in solar thermal energy, solar thermal power generation, solar thermal collectors, etc., can solve the problem of inflexible optical path receiving surface layout, achieve flexible and convenient application, compact relative position, and reduce occupied area Effect

Active Publication Date: 2014-03-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the control of the optical path and the arrangement of the receiving surface of the current existing solar energy concentration system are not flexible enough. The present invention provides a rotary solar concentration method based on the principle of Cassegrain reflection

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  • Rotary solar concentrating method based on Cassegrain reflection principle
  • Rotary solar concentrating method based on Cassegrain reflection principle
  • Rotary solar concentrating method based on Cassegrain reflection principle

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specific Embodiment approach 1

[0026] Specific implementation mode one: combine figure 1 Illustrate this embodiment, the rotary solar concentrating method based on Cassegrain reflection principle described in this embodiment, it comprises the following steps:

[0027] Step 1: Establish a rotating Cassegrain aggregation system:

[0028] Set the quadratic hyperboloid 2 and the primary paraboloid 1 to share a focal point, arrange the receiving surface 3 at the conjugate focal point of the quadric hyperboloid 2, and the focal ratio of the primary paraboloid 1 needs to be less than or equal to 0.25;

[0029] Step 2: Rotate the quadratic hyperboloid 2 of the rotating Cassegrain aggregation system around the primary paraboloid 1, and then obtain the structural parameters of the quadratic hyperboloid 2 according to the position to be set on the receiving surface 3;

[0030] Step 3: According to the structural parameters of the quadratic hyperboloid 2 obtained in step 2, under the condition that the quadratic hyper...

specific Embodiment approach 2

[0032] Specific embodiment 2: This embodiment is a further limitation of the rotating solar concentrating method based on the Cassegrain reflection principle described in the specific embodiment 1. In step 2, the quadratic hyperboloid of the rotating Cassegrain concentrating system 2 rotate around the primary paraboloid 1, and then obtain the structural parameters of the quadratic hyperboloid 2 according to the position to be set on the receiving surface 3:

[0033] First, according to the coordinates of the center position of the receiving surface 3 as (x 0 ,y 0 ), the angle of rotation of the quadratic hyperboloid 2 around the primary paraboloid 1 is α, and the α=arctan (x 0 / (f-y 0 ));

[0034] Then, determine one of a or b of the quadratic hyperboloid 2 according to actual needs;

[0035] then according to a 2 +b 2 =(x 0 2 +y 0 2 ) / 4, find the other of a or b;

[0036] According to said α, a and b at last, determine the surface equation of quadratic hyperboloid ...

specific Embodiment approach 3

[0040] Specific embodiment three: This embodiment is a further limitation of the rotary solar concentrating method based on the Cassegrain reflection principle described in specific embodiment two. In step three, the quadratic hyperboloid 2 calculated according to step two Structural parameters, under the condition that the quadratic hyperboloid 2 in the rotating Cassegrain gathering system can receive all the concentrated rays of the focus, solve the rotation angle of the quadratic hyperboloid 2 around the primary paraboloid 1 based on the principle of geometric optics The method for the maximum value is:

[0041] Calculate the maximum value α of the counterclockwise rotation angle α of the quadratic hyperboloid 2 around the first paraboloid 1 according to the following formula max :

[0042] P 2 ( cos ...

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Abstract

The invention provides a rotary solar concentrating method based on the Cassegrain reflection principle and relates to an adjustable high-power solar concentrating method. The rotary solar concentrating method is used for solving the problems of the currently existing solar concentrating systems that the light path control and the arrangement of a receiving face are not flexible enough. The method comprises the steps: establishing a concentrating system, wherein a secondary mirror and a primary paraboloid are enabled to share a focus, and the receiving face is arranged at the conjugate focus of the secondary mirror; enabling the secondary mirror to revolve around the primary paraboloid, solving the structural parameters of the secondary mirror according to a position where the receiving face is required to be arranged, and meanwhile, solving the maximum of a revolving angle of the secondary mirror around the primary paraboloid based on the principle of geometrical optics in the case that the condition that the secondary mirror can receive all concentrated light of the focus is guaranteed; adjusting the receiving face and the primary paraboloid in the range of the maximum of the revolving angle of the secondary mirror around the primary paraboloid, so as to enable the receiving face of the concentrating system to receive concentrated energy flow in real time. The secondary mirror is a hyperboloid or semi-ellipsoidal concave face. The rotary solar concentrating method is applied to solar high-power energy flow concentrating.

Description

technical field [0001] The invention relates to an adjustable solar high-power concentrating method. Background technique [0002] Solar energy resources are abundant, clean and easy to obtain, and have a wide range of application prospects. Solar concentrators converge multiple energy flows to designated locations for utilization, achieving efficient utilization and cost savings. For some solar energy utilization system fields, transferring the sun image is more conducive to the receiver to receive the concentrated energy flow, but the relative position of the receiver of the existing solar concentration system is fixed, and the real-time rotation of the receiving surface cannot be realized. Contents of the invention [0003] The object of the present invention is to solve the problem of inflexible control of the light path and arrangement of the receiving surface of the current existing solar concentrating system. The present invention provides a rotating solar concentra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B19/00G02B7/198F24J2/10F24J2/46F24S23/70
CPCY02E10/40
Inventor 夏新林孟宪龙孙创谈和平
Owner HARBIN INST OF TECH
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