Optimal center height of the receiver in a 100 MW solar power tower plant

doi:10.3969/j.issn.1674-1951.2021.05.011

Abstract

Abstract:

In order to reduce the power generation cost of solar power tower plants, center heights of the receivers should be optimized for stations' efficiency improvement. The optimization method for the receiver's central height in a 100 MW solar power tower plant was investigated. The influences of the receiver's height on the quantity of heliostats and the power plant output were simulated after model construction. The height of the receiver was obtained by the minimum power generation cost method. The results show that, with the increase of the receiver's height, power generation cost will touch bottom. With a certain heat storage capacity, the power generation cost can bottom out with a receiver tower height at 220 m. By the means of optimizing receiver towers height, the investment cost can be reduced and the economy can be improved.

Key words: solar power tower plant, receiver, heliostat, solar collection field, power generation cost, heat storage

CLC Number:

TK51：TM615

GAO Song, REN Bohan, XU Jigang, XU Zhiqiang, LI Hongfei. Optimal center height of the receiver in a 100 MW solar power tower plant[J]. Huadian Technology, 2021, 43(5): 70-74.

Figures/Tables 7

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References 17

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项目名称	装机容量/MW	储热时长/h	塔高/m
美国新月沙丘电站	110	10	164
美国艾文帕电站	392 (3个模块)	—	137
西班牙Gemasolar电站	20	15	140
以色列阿沙利姆电站	121	—	240
甘肃敦煌100 MW电站	100	12	220
新疆哈密50 MW电站	50	13	183
青海德令哈50 MW电站	50	7	180

设计参数	数值
宽度/mm	11 670
高度/mm	10 080
有效反射面积比例/%	98
横向面数	7
纵向面数	5
子镜个数	35
面型弧度误差/mrad	1.25
镜面反射率/%	92
定日镜可用率/%	99
定日镜最低运行太阳高度角/（°）	15
第1环距吸热塔中心距离/m	130

塔高/m	镜面台数	不同储热时长下的年发电小时数
塔高/m	镜面台数	8 h	10 h	12 h	14 h	16 h
200	12 359	3 641	3 821	3 939	4 009	4 037
220	12 071	3 628	3 806	3 923	3 990	4 017
240	11 825	3 604	3 779	3 893	3 959	3 984
260	11 646	3 587	3 761	3 873	3 937	3 961

参数		数值
装机容量/MW		100
年利用小时数	第1年	1 320
	第2年	3 545
	第3年	3 940
发电厂用电率/%		10
修理费提存率（每5年增加0.5百分点）/%		0.8
材料费/[元·（MW·h）^-1]		12
人工费（人均6万元/年）/万元		540
材料费进项税率/%		13
修理费进项税率/%		13
售电销售税率/%		13
企业所得税率/%		25

项目	吸热器中心高度/m	定日镜台数	年发电利用小时数	储热时间/h
依托工程数据	220	11 948	3 900	12
模型得出结论	220	12 071	3 923	12