Comparative Analysis of Heat Transfer Characteristics of Conical Cavity Receivers With Different Heat Transfer Fluids

doi:10.12096/j.2096-4528.pgt.21096

Abstract

Abstract:

To explore the influence of heat transfer fluids on the heat transfer characteristics of solar receivers, the heat transfer characteristics of conical cavity receivers with supercritical CO₂ and compressed air as heat transfer fluids were compared and analysed by combining ray tracing and computational fluid dynamics method. Based on numerical simulation, the effects of cone angle, fluid inlet mass flow rate and inlet temperature on heat transfer performance of receivers were discussed. The results show that under the same working conditions, the outlet temperature of compressed air is higher than that of supercritical CO₂, but the corresponding receiver thermal efficiency and system photothermal conversion efficiency are lower. For the two heat transfer fluids, the system photothermal conversion efficiencies reach the optimal values with the cone angle of 4.12°. In the range of operating parameters studied, the outlet temperature of heat transfer fluids increase linearly with the increase of inlet temperature. Once the mass flow rate exceeds 0.04 kg/s, increasing the mass flow rate has little effect on improving the photothermal conversion efficiency of the system.

Key words: solar energy, receiver, supercritical CO₂, compressed air, heat transfer characteristics

CLC Number:

TK513

Ding WANG, Yuxuan CHEN, Hu XIAO, Yanping ZHANG. Comparative Analysis of Heat Transfer Characteristics of Conical Cavity Receivers With Different Heat Transfer Fluids[J]. Power Generation Technology, 2021, 42(6): 682-689.

Figures/Tables 13

Fig.1 Schematic diagram of cavity receiver and PDC system

Fig.2 Computational domain meshing

Tab. 1 Grid independence check

网格数量	出口温度/K	绝对误差/%
2 423 370	860.40	0.24
3 598 505	861.09	0.16
4 442 491	862.60	0.00
5 630 989	862.52	—

Fig.3 Comparison and verification of heat transfer simulation results

Fig.4 Heat flux distribution on outer wall of receiver coil tube

Tab. 2 Total energy absorbed by the cavity and optical efficiency under different cone angles

ϕ/(°)	Q_ab/W	η_op/%
0	10 387	88.21
4.12	10 347	87.88
8.23	10 318	87.62
12.35	10 308	87.54
16.46	10 293	87.42

Fig.5 Variation of HTF temperature along the centerline of the tube under different cone angles

Fig.6 Variations of heat losses of the receiver with different cone angles

Fig.7 Variations of receiver thermal efficiency and system photothermal conversion efficiency with different cone angles

Fig.8 Variations of heat losses of the receiver with different inlet mass flow rates

Fig.9 Variations of HTF outlet temperature and system photothermal conversion efficiency with different inlet mass flow rates

Fig.10 Variations of heat losses of the receiver with different inlet temperatures

Fig.11 Variations of HTF outlet temperature and system photothermal conversion efficiency with different inlet temperatures

References 18

1	史洁, 刘晓飞. 新能源功率预测算法优化研究[J]. 发电技术, 2019, 40 (1): 78- 82.
	SHI J , LIU X F . The optimization research approaches for renewable energy output forecasting[J]. Power Generation Technology, 2019, 40 (1): 78- 82.
2	童家麟, 吕洪坤, 李汝萍, 等. 国内光热发电现状及应用前景综述[J]. 浙江电力, 2019, 38 (12): 25- 30.
	TONG J L , LYU H K , LI R P , et al. Review on status and application prospect of domestic CSP generation[J]. Zhejiang Electric Power, 2019, 38 (12): 25- 30.
3	佟锴, 杨立军, 宋记锋, 等. 聚光太阳能集热场先进技术综述[J]. 发电技术, 2019, 40 (5): 413- 425.
	TONG K , YANG L J , SONG J F , et al. Review on advanced technology of concentrated solar power concentrators[J]. Power Generation Technology, 2019, 40 (5): 413- 425.
4	KASAEIAN A , KOURAVAND A , RAD M , et al. Cavity receivers in solar dish collectors: a geometric overview[J]. Renewable Energy, 2020, 169 (14): 53- 79.
5	ZOU C Z , ZHANG Y P , FALCOZ Q , et al. Design and optimization of a high-temperature cavity receiver for a solar energy cascade utilization system[J]. Renewable Energy, 2017, 103, 478- 489. DOI
6	TAN Y , ZHAO L , BAO J , et al. Experimental investigation on heat loss of semi-spherical cavity receiver[J]. Energy Conversion and Management, 2014, 87, 576- 583. DOI
7	PAVLOVIC S , LONI R , BELLOS E , et al. Comparative study of spiral and conical cavity receivers for a solar dish collector[J]. Energy Conversion and Management, 2018, 178, 111- 122. DOI
8	DAABO A M , MAHMOUD S , AL-DADAH R K , et al. Numerical investigation of pitch value on thermal performance of solar receiver for solar powered Brayton cycle application[J]. Energy, 2017, 119 (15): 523- 539.
9	QIU K , YAN L , NI M , et al. Simulation and experimental study of an air tube-cavity solar receiver[J]. Energy Conversion and Management, 2015, 103 (10): 847- 858.
10	郭缝伟. 基于MCRT和FVM方法的碟式太阳能聚光集热系统的光热转换特性数值研究[D]. 重庆: 重庆大学, 2019.
	GUO F W. Numerical study on the light-to-heat conversion characteristics of the dish-type solar energy concentrating and collecting system based on MCRT and FVM methods[D]. Chongqing: Chongqing University, 2019.
11	BENOIT H , SPREAFICO L , GAUTHIER D , et al. Review of heat transfer fluids in tube-receivers used in concentrating solar thermal systems: properties and heat transfer coefficients[J]. Renewable and Sustainable Energy Reviews, 2016, 55, 298- 315. DOI
12	LONI R , ASKARI A , SLI-ARDEH E , et al. Numerical comparison of a solar dish concentrator with different cavity receivers and working fluids[J]. Journal of Cleaner Production, 2018, 198, 1013- 30. DOI
13	陶文铨. 数值传热学[M]. 西安: 西安交通大学出版社, 2001: 128- 129.
	TAO W Q . Numerical heat transfer[M]. Xi'an: Xi'an Jiaotong University Press, 2001: 128- 129.
14	CHU S , BAI F , ZHANG X , et al. Experimental study and thermal analysis of a tubular pressurized air receiver[J]. Renewable Energy, 2018, 125, 413- 424. DOI
15	ZOU C Z , FENG H Y , ZHANG Y P , et al. Geometric optimization model for the solar cavity receiver with helical pipe at different solar radiation[J]. Frontiers in Energy, 2019, 13 (2): 1- 12. DOI
16	ZHANG Y P , XIAO H , ZOU C Z , et al. Combined optics and heat transfer numerical model of a solar conical receiver with built-in helical pipe[J]. Energy, 2020, 193, 116775. DOI
17	ZHANG Y P , Chen Y X , ZOU C Z , et al. Experimental investigation on heat-transfer characteristics of a cylindrical cavity receiver with pressurized air in helical pipe[J]. Renewable Energy, 2021, 163, 320- 330. DOI
18	BELLOS E , BOUSI E , TZIVANIDIS C , et al. Optical and thermal analysis of different cavity receiver designs for solar dish concentrators[J]. Energy Conversion and Management X, 2019, 2, 100013. DOI

[1]	Nan TU, Jiachen LIU, Jing XU, Jiabin FANG, Yanhua MA. Performance Analysis of Heat Storage and Release Process for a Shell-and-Tube Phase Change Heat Exchanger [J]. Power Generation Technology, 2024, 45(3): 508-516.
[2]	Xiaowen WANG, Nan TU, Jiabin FANG, Xiaoqun LIU, Chiyu WANG, Jiachen LIU. Simulation of Optical Performance for a Solar Cavity Receiver Arranged With Spiral Tubes [J]. Power Generation Technology, 2023, 44(2): 221-228.
[3]	ABD-HAMID Mohamed, Longyu XIA, Gaosheng WEI, Liu CUI, Chao XU, Xiaoze DU. Performance Analysis of Photovoltaic/Thermal Hybrid System Integrated With Phase Change Heat Storage Materials [J]. Power Generation Technology, 2023, 44(1): 53-62.
[4]	Yingfeng LI, Tao ZHANG, Heng ZHANG, Peng CUI, Zaiguo FU, Zhongliang GAO, Qi GENG, Zhihan LIU, Qunzhi ZHU, Hexing LI, Meicheng LI. Efficient and Comprehensive Photovoltaic/Photothermal Utilization Technologies for Solar Energy [J]. Power Generation Technology, 2022, 43(3): 373-391.
[5]	Yao XIAO, Wenze NIU, Gaosheng WEI, Liu CUI, Xiaoze DU. Review on Research Status and Developing Tendency of Solar Photovoltaic/Thermal Technology [J]. Power Generation Technology, 2022, 43(3): 392-404.
[6]	Kaiyun ZHENG. Study on Supercritical CO₂ Cycle Coal-fired Power Generation System for Low Temperature Scenario [J]. Power Generation Technology, 2022, 43(1): 126-130.
[7]	Lu DING, Xinyue XIAO, Zhengwen XI, Wenhan HUA. Simulation Calculation and Influence Analysis of High Altitude Wind Speed in Different Directions of Tower Solar Energy Receiver [J]. Power Generation Technology, 2021, 42(6): 707-714.
[8]	Li XU, Feihu SUN, Jun LI, Qiangqiang ZHANG. Experimental Analysis of the Influence of Flow Rate on Heat Transfer Characteristics of Parabolic Trough Solar Collector [J]. Power Generation Technology, 2021, 42(6): 665-672.
[9]	Kai XUE, Yihan WANG, Heng CHEN, Gang XU, Jing LEI. Thermodynamic Performance Analysis of a Parabolic Trough Solar-assisted Biomass-fired Cogeneration System [J]. Power Generation Technology, 2021, 42(6): 653-664.
[10]	Canghong ZHANG, Nan TU, Jiabin FANG. Study on Thermal Stress of Water/Steam Solar Absorber Tubes Under Unilateral Non-uniform Heat Flux Boundary Conditions [J]. Power Generation Technology, 2021, 42(6): 699-706.
[11]	Chunxu DU, Yancheng MA, Yanquan WANG, Jihao XIE, Jinkai LIU, Yuanwei LU. Development of Molten Salt Electric Heating Control System Based on Monitor and Control Generated System and Programmable Logic Controller [J]. Power Generation Technology, 2021, 42(6): 727-733.
[12]	Kaiyun ZHENG. Study on Cold End Temperature Optimization of Supercritical CO₂ Cycle [J]. Power Generation Technology, 2021, 42(2): 261-266.
[13]	Zheyang ZHANG,Xing JU,Xinyu PAN,Yu YANG,Chao XU,Xiaoze DU. Photovoltaic/Concentrated Solar Power Hybrid Technology and Its Commercial Application [J]. Power Generation Technology, 2020, 41(3): 220-230.
[14]	Kexun LI,Mingzhu ZONG,Gaosheng WEI. Overview of Geothermal Power Generation and Joint Power Generation With Other New Energy Sources [J]. Power Generation Technology, 2020, 41(1): 79-87.
[15]	Yaowang LI,Shihong MIAO,Binxin YIN,Shixu ZHANG,Songyan ZHANG. Optimal Dispatch Model for Micro Integrated Energy System Considering Multi-carrier Energy Generation Characteristic of Advanced Adiabatic Compressed Air Energy Storage [J]. Power Generation Technology, 2020, 41(1): 41-49.