Tower type solar receiver with single-side longitudinal vortex optimized flow field

A tower type solar energy and longitudinal vortex generator technology is applied in the field of solar thermal utilization, which can solve the problems of high cost, poor reliability, and complex structure of heat absorption pipes, and achieves the advantages of improving temperature field, reducing circumferential temperature difference, and improving heat collection efficiency. Effect

Active Publication Date: 2017-05-31
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a tower type solar receiver with one side longitudinal vortex optimized flow field to overcome the problems of complex structure, high cost and poor reliability of existing tower type solar heat absorbing tubes

Method used

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  • Tower type solar receiver with single-side longitudinal vortex optimized flow field
  • Tower type solar receiver with single-side longitudinal vortex optimized flow field
  • Tower type solar receiver with single-side longitudinal vortex optimized flow field

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Embodiment Construction

[0033] Fig. 1 (a) is the solar flux density distribution figure of the heat-absorbing circular tube of existing tower-type solar receiver vertically, and Fig. 1 (b) is the horizontal circumference of the heat-absorbing circular tube of existing tower-type solar receiver Upward solar energy flow density distribution diagram, Fig. 1 (c) is the solar energy flow density distribution diagram in the circumferential direction of the heat-absorbing circular tube angle of existing tower type solar receiver, as shown in Fig. 1 (a)-(c), wherein, The abscissa Y is the circumferential position or angle of the heat-absorbing tube, and the ordinate X is the solar energy density on the surface of the heat-absorbing tube at the corresponding circumferential position (W / m 2 ), the direction indicated by the arrow in Figure 1(c) is the incident direction of the spot formed by the heliostat. One side of the heat-absorbing tube of the existing tower-type solar receiver receives sunlight, so that ...

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Abstract

The invention provides a tower type solar receiver with a single-side longitudinal vortex optimized flow field. The tower type solar receiver comprises a shell, a plurality of heat absorption round pipes, a plurality of longitudinal vortex generators and a supporting piece arranged at the bottom of the shell; one end of the shell is open, the other end of the shell is internally provided with the multiple heat absorption round pipes, and the size of the opening end of the shell is larger than or equal to that of the other end of the shell; a first side or a second side inside each heat absorption round pipe is provided with at least two longitudinal vortex generators, the second sides are the sides opposite to the first sides, and the first sides are the sides, close to the sunlight, of the heat absorption round pipes; and the multiple heat absorption round pipes and the multiple longitudinal vortex generators are arranged on the supporting piece, and all the heat absorption round pipes and all the longitudinal vortex generators are vertically arranged. By means of the tower type solar receiver, circumferential temperature gradients and heat stress distribution of the heat absorption round pipes can be lowered, the reliability of the tower type solar receiver is improved, the structure of the tower type solar receiver is optimized, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of solar thermal utilization, in particular to a tower-type solar receiver with a single-sided longitudinal vortex optimized flow field. Background technique [0002] At present, in the heat-absorbing tubes of the existing tower-type solar receivers, one side of the heat-absorbing tubes receives the sunlight concentrated and reflected by the heliostat, and the other side does not receive solar radiation, resulting in the heat flux density in the heat-absorbing tubes The uneven distribution makes the thermal stress distribution in the circumferential direction of the heat-absorbing pipe uneven, resulting in a decrease in the reliability of the heat-absorbing pipe. [0003] At present, the internal flow field optimization measures or the way of changing the external structure are generally used to optimize the heat absorption tube, so that the heat flux density distribution inside the heat absorption tube is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/26F24J2/46F24S10/75
CPCF24S80/00F24S10/75F24S2080/05F24S20/20Y02E10/44
Inventor 刘赟李金芳李永华
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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