Thermo-economic analysis of solar thermal power cycles assisted MED-VC (multi effect distillation-vapor compression) desalination processes

详细信息    查看全文

• 作者：M.A. Sharaf^a ; ^{swazy20@hotmail.com"" rel=""nofollow} ; A.S. Nafey^a ; Lourdes Garc&#xed ; a-Rodr&#xed ; guez^b ; ¹ ; ^{lourdesg@esi.us.es"" rel=""nofollow}
• 关键词：Thermo-economic ; Multi effect distillation ; Solar organic cycles ; Thermal and mechanical vapor compressions ; SDS software package
• 刊名：Energy
• 出版年：2011
• 出版时间：May 2011
• 年：2011
• 卷：36
• 期：5
• 页码：2753-2764
• 全文大小：1608 K

文摘

Solar power assisted different techniques of MED-VC (multi effect distillation-vapor compression) processes is thermo-economically analyzed and evaluated. In this work, two techniques of solar power cycles are considered to power on MED-PF-TVC, MVC (multi effect distillation thermal and mechanical vapor compressions). In the first technique, the developed solar thermal power is directly transmitted from the solar collector field via boiler heat exchanger unit toward the steam ejector of the MED-PF-TVC process. In the second technique, the electrical power generated from the SORC (Solar Organic Rankine Cycle) is used to power on the vapor compressor of the MED-PF-MVC process. The comparison is implemented according to the operation of PTC (parabolic trough collector) with Toluene organic oil and Water working fluids (2nd technique). Therminol-VP1 HTO (Heat Transfer Oil) is considered across the solar field and water is considered for boiler heat exchanger (1st technique). A case study is performed according to 4545 m³/day of distillate product. As a result, reducing the value of compression ratio with increasing the evaporator’s numbers would reduce the specific power consumption, solar field area, and thermo-economic costs. Also it is clear that the operation of steam ejector would increase the gain ratio instead of increasing the evaporator’s numbers.