A THEORETICAL STUDY OF A THERmOSYPHON SOLAR TOWER | ||||
| ERJ. Engineering Research Journal | ||||
| Article 7, Volume 21, Issue 2, April 1998, Page 91-104 PDF (1.11 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.1998.73023 | ||||
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| Author | ||||
| A. A. El-haroun | ||||
| Mechanical Power Eng . Dept., Facluty of Engineering, Menoufia University, Egypt | ||||
| Abstract | ||||
| Thermosyphon solar tower can be used to increase the vehcit.y of air and consequently the specific power in locations with reasonable value of sdar radiation intensity when there ip a no enough area beside the tower to construct a solar collector. In this case the tower itself works as a collector. In this work the possibility of generating power by using a very high tower, haviing reciafiyula~ CLUSS section, open to the atmosphere at the top and bottolri and heated by the uur;, was studied theoretically. In this study, the eEect uf tower height, IJJW~L leugth, tower dep~h, suldr radiatiori intensity ard inlec. ~AL I~~tlgerature orr tile performance ui lie tower wab LLL vtisi;;cpL;;LZ. It was found that, the temperaf:.ure inside the tower increases by the irlcreaue in sular. radiaLir)n ia.r.Lein&.y, id& uir ierr~perature and tower height and decreases by the rise in tower length as well as in tower depth. The iibt ate vdociLy tcl tLa towex and consequently specific power was found to be x..aised by the growth in. tower height and scllar radiiitien intensity, and it is found to be decreased by the enlargement in tower length, tower depth and temperature of air at the inlet of the kower. The inlet air velocity and the specific power for tower height of 500 in were found LO La 5.2 &rid 141 times d their values ~OK 56 111 towef- height respectively. For solar radiation intensity of 1000 W/ni , the inlet air we1uc:ity anti the specific puueL a~ti cyected to Le 1.32 and 2.28 times of tiieir vdlues fur 200 W/m solar radiation intensity respectively. | ||||
| Keywords | ||||
| Solar tower; Solar turbine; T hermosyphon; solar energy; renewable energy | ||||
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