Double flow channel open-type solar heat absorber having porous plate arrangement

摘要

The present invention relates to a dual-passage open-type solar heat absorber having a porous plate array, and more particularly, to a dual-passage open-type solar heat absorber which is formed in a form of a rectangular-shaped container in order to increase a contact area with collected sunlight and easily extend in a lateral direction or in a form of a circular-shaped container which is advantageous when a pressure is applied thereto, and which includes a main body formed in a formed of a rectangular or circular-shaped container by using a three-layered tube to form a dual passage therein so that heat is prevented from being lost through an outer wall.

主权项

1. A dual-passage solar heat absorbing system comprising:
a porous plate array; an absorber for absorbing a solar energy from solar heat using heliostat collectors; a heat-exchange medium in the absorber being heated by the solar energy; wherein the heated heat-exchange medium generates steam for generating electricity;
the absorber comprising:
a side wall formed with a three-layered tube having, an inner tube having an inner side surface and an outer side surface, an intermediate tube having an inner side surface and an outer side surface and an outer tube having an inner side surface and an outer side surface, said inner, intermediate and outer tubes having a rectangular or circular shape and overlapping each other,wherein the outer side surface of the inner tube and the inner side surface of the intermediate tube are spaced apart from each other to form an inner passage, the outer side surface of the intermediate tube and the inner side surface of the outer tube are spaced apart from each other to form an outer passage, and the inner and outer passages communicate with each other through front ends thereof;a plurality of through-holes formed in a side surface of a rear portion of the inner tube;a front finish plate disposed at a front end of the side wall and coupled to ends of the inner and outer tubes to close a front end of the three-layered tube;a rear finish plate for closing a rear end of the side wall;an inner finish plate for closing an inside of the inner tube at a position spaced to the front finish plate from the rear finish plate by a predetermined distance;a collection space formed between the inner finish plate and the rear finish plate, such that the inner passage and the collection space communicate to transmit the heat-exchange medium, wherein the plurality of through-holes formed in the side surface of the rear portion of the inner tube are disposed in the collection space;an inlet tube coupled to the rear finish plate to communicate with the outer passage to transmit the heat-exchange medium; and an outlet tube coupled to the rear finish plate to communicate with the collection space.