RADIATION ABSORBING METAL PIPE

摘要

The invention relates to the field of solar energy usage and, particularly, to solar systems, which operate on the base of concentration of direct solar radiation. The invention proposes a radiation absorbing metal pipe intended for heating gaseous medium or gaseous-liquid mixture.;The proposed radiation absorbing metal pipe is constructed from perforated plates. These plates are provided with inclined or two-stage upright rims. The plates are stacked and sealingly joined with formation of a tubular unit.;Such tubular units with absorbing coatings of their external surfaces can be applied in following solar thermal systems: parabolic trough collectors; solar thermal collectors with usage of linear Fresnel reflectors; for a system with an array of tracking mirrors and a central receiver mounted on a tower or on the ground.

主权项

1. A radiation absorbing metal pipe intended for heating gaseous medium or gaseous-liquid mixture; said radiation absorbing metal pipe is constructed from stacked metal flat plates with perforations and inclined rims; said inclined rims of said stacked metal flat plates are sealingly joined by welding or brazing; the ends of the tubular unit fabricated from said stacked metal flat plates are sealingly joined with fittings; the external surfaces of said tubular unit and said fittings are covered with a radiation absorbing coating.