Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.apenergy.2019.113328 |
Coupling supercritical carbon dioxide Brayton cycle with spray-assisted dry cooling technology for concentrated solar power | |
Sun, Yubiao; Duniam, Sam; Guan, Zhiqiang; Gurgenci, Hal; Dong, Peixin; Wang, Jianyong; Hooman, Kamel | |
通讯作者 | Sun, Yubiao ; Dong, Peixin |
来源期刊 | APPLIED ENERGY
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ISSN | 0306-2619 |
EISSN | 1872-9118 |
出版年 | 2019 |
卷号 | 251 |
英文摘要 | Supercritical carbon dioxide (sCO(2)) based Brayton cycle integrated with concentrated solar power applications is a promising technology to exploit solar energy for electricity production. To reduce the energy cost of this solar power plant, spray-assisted dry cooling technology is developed, which makes electricity more affordable for isolated and arid regions. However, pure dry cooling technology suffers from low efficiency under high ambient conditions and a spray cooling system has been proposed to address this problem. Due to the high cost and great complexity, experimental test of a designed spray cooling system on a natural draft dry cooling tower is never reported. Here a spray cooling system consisted of multiple nozzles was tested on a 20 m high experimental tower. This is, to our knowledge, the world's first attempt to practice spray enhancement of NDDCT at full scale. It is found that the introduced spray cooling can effectively precool the inlet hot air and consequently reduce the circulating water exit temperature. The promising application of this new technology in solar power plants was firstly revealed by integrating the tower into a 1 MW concentrated solar thermal sCO(2) Brayton cycle. As spraying water flowrate increases, cooling tower dissipates more waste heat, lowering the compressor inlet temperature and consequently improving the efficiency of thermal cycle. Power cycle simulations also show that cycle efficiency can be higher than 40.5% at the optimal circulating water flow rate, i.e., 4-5 kg/s, depending on the sCO(2) flow rate. |
英文关键词 | Natural draft dry cooling tower Spray cooling system Water evaporation Heat capacity Solar energy Concentrated solar power Supercritical CO2 Brayton cycle |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000497966300041 |
WOS关键词 | WATER SPRAY ; INLET AIR ; PERFORMANCE ; MEDIA ; SIMULATION ; TOWERS |
WOS类目 | Energy & Fuels ; Engineering, Chemical |
WOS研究方向 | Energy & Fuels ; Engineering |
EI主题词 | 2019-10-01 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/310238 |
作者单位 | Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia |
推荐引用方式 GB/T 7714 | Sun, Yubiao,Duniam, Sam,Guan, Zhiqiang,et al. Coupling supercritical carbon dioxide Brayton cycle with spray-assisted dry cooling technology for concentrated solar power[J],2019,251. |
APA | Sun, Yubiao.,Duniam, Sam.,Guan, Zhiqiang.,Gurgenci, Hal.,Dong, Peixin.,...&Hooman, Kamel.(2019).Coupling supercritical carbon dioxide Brayton cycle with spray-assisted dry cooling technology for concentrated solar power.APPLIED ENERGY,251. |
MLA | Sun, Yubiao,et al."Coupling supercritical carbon dioxide Brayton cycle with spray-assisted dry cooling technology for concentrated solar power".APPLIED ENERGY 251(2019). |
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