Vacuum Effect on the Performance of Solar Air Collector with Micro-Channel Absorber Plate
In this study, the effect of vacuum with micro-channel technique on solar air collector performance is investigated experimentally. Vacuum space reduces the loss of heat for the absorption plate by conduction and thus improves the solar collector performance. It has been demonstrated that the solar collector is evacuated to 0.1 bar of pressure for absorber-to-cover spacing of 4cm. An absorber plate was manufactured from Aluminum metal with 30 rectangular micro-channels (length 0.9, width 0.004, height 0.0008 m) is constructed with measurements facilities of velocity, temperature and differential pressure. The tests are carried out indoor using solar simulator. Results showed that the performance of solar collector increases with vacuum about 2-5% than gained with non-vacuum utilizing a micro-channel absorber plate-black surface.
How to Cite
The author assigns to Engineering and Technology Journal with full title guarantee, all copyrights, rights in the nature of copyright, and all other intellectual property rights in the article throughout the world (present and future, and including all renewals, extensions, revivals, restorations and accrued rights of action). The Author represents that he/she is the author and proprietor of this Article and that this Article has not heretofore been published in any form. The Author warrants that he/she has obtained written permission and paid all fees for use of any literary or illustration material for which rights are held by others. The author agrees to hold the editor(s)/publisher harmless against any suit, demand, claim or recovery, finally sustained, by reason of any violation of proprietary right or copyright, or any unlawful matter contained in the submitted article.