Article
Thermodynamics
Tianxiang Hu, Trevor Hocksun Kwan, Han Zhang, Qiliang Wang, Gang Pei
Summary: This study proposes a newly shaped tube (NS-tube) to reduce the radiative heat loss of parabolic trough collector (PTC) system. The heat flux distribution and thermal efficiency are analyzed through optical simulation and heat transfer model. Results show that the thermal efficiency of NS-tube can be improved by 0.62%-4.64% compared to the original tube.
Article
Thermodynamics
Yu Qiu, Mingpan Xu, Qing Li, Yucong Xu, Jikang Wang
Summary: Improving the efficiency of the evacuated receiver in a parabolic trough solar plant significantly enhances performance. Four novel modified receivers were designed, with results suggesting that mirrors and heat-reflecting films can improve optical and thermal efficiencies. The modified receiver using only inner film and mirrors showed the highest efficiency compared to others, making it the optimal design for enhancing receiver performance.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Qiliang Wang, Honglun Yang, Mingke Hu, Jingyu Cao, Gang Pei, Hongxing Yang
Summary: This study analyzes the emissive heat loss around the parabolic trough solar receiver, proposes the concept of a negative thermal-flux region, and designs a new parabolic trough receiver with an inner radiation shield to reduce heat loss and enhance heat-collecting performance. This innovative approach shows great potential for breakthrough enhancement in the performance of parabolic trough collector systems.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Yu Qiu, Yucong Xu, Qing Li, Jikang Wang, Qiliang Wang, Bin Liu
Summary: The parabolic trough collector with a modified receiver enhanced by solar and hot mirrors can achieve higher optical efficiency compared to conventional receivers, especially under high irradiance and low temperature conditions. The addition of solar and hot mirrors can effectively improve the optical-thermal efficiency of the collector.
Article
Green & Sustainable Science & Technology
Khaled Mohamad, P. Ferrer
Summary: This study discusses an improved concept for a cavity receiver unit for Solar Parabolic Trough Collectors with the application of hot mirror coating to reduce radiant energy losses and increase efficiency. By comparing experimental and simulation results, it was found that this design has advantages in terms of heat transfer fluid temperature and efficiency at high temperatures.
Article
Multidisciplinary Sciences
Mohamed Mahran Kasem
Summary: This study presents a novel multi-objective optimization model for the design optimization of PTCs, with thermal and exergetic efficiencies being the primary performance indicators. The optimization model effectively maximizes both thermal and exergetic efficiencies, with water and helium achieving the highest optimal values, respectively.
SCIENTIFIC REPORTS
(2022)
Article
Thermodynamics
P. Ferrer, Khaled Mohamad, M. C. Cyulinyana, Victor Kaluba
Summary: In this article, design approaches to a receiver enclosed in an opaque cavity and heated by a solar parabolic trough collector are discussed. The optimization of the interaction between the cavity receiver and the solar radiation from a collector mirror is explored, which differs from conventional receivers and is essential for utilizing the benefits of using a cavity sleeve. Through simulations, different focal plane positions and the relative sizes of the receiver elements are investigated, and a focal plane close to the surface of the absorber pipe is found to have the highest efficiency at 62%. An experimental cavity receiver and parabolic trough system are then built based on the simulations, and the simulation results are validated against measured data with a maximum discrepancy of 8%. A novel method using the cooling behavior of the receiver is also applied to confirm the physical parameters through simulations.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Caiyan Qin, Jungchul Lee, Bong Jae Lee
Summary: By using a semi-cylindrical absorbing coating in the DAPTSC, both volumetric and surface absorption of solar radiation can be achieved, leading to significantly higher thermal efficiency compared to the design with a reflective coating, especially when the absorption coefficients of the nanofluids are low. This presents a new opportunity for further reducing the nanoparticle concentration in a DAPTSC.
APPLIED THERMAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Anish Malan, K. Ravi Kumar
Summary: This study investigates the impact of wind load on the stability of a large aperture parabolic trough solar collector (PTSC) and provides analysis and estimation. The findings contribute to optimizing the structural design and operational stability of solar thermal power plants.
Article
Green & Sustainable Science & Technology
N. Sreenivasalu Reddy, S. Gowreesh Subramanya, K. C. Vishwanath, M. Karthikeyan, S. Kanchiraya
Summary: The experimental study shows that using a rotary receiver tube can significantly improve the performance of the parabolic trough collector, especially when increasing the friction factor. Additionally, thermal efficiency of the collector can be improved by reducing the inlet temperature and increasing the flow rate.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Multidisciplinary
Peng Liu, TingTing Ren, YanLin Ge, Wei Liu, LinGen Chen
Summary: Designing a highly-efficient parabolic trough receiver (PTR), such as a novel finned PTR with inner tube (FPTR-IT), can effectively promote the utilization of solar thermal energy and help alleviate energy crisis and environmental issues. The FPTR-IT is designed to provide different grades of thermal energy using two heat transfer fluids and has improved thermal efficiency compared to conventional PTRs. Performance evaluations show that the FPTR-IT has reduced heat loss and improved total efficiency, making it a promising solution for generating electricity and freshwater in remote arid areas or islands.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Green & Sustainable Science & Technology
Natraj, B. N. Rao, K. S. Reddy
Summary: Solar energy, an emerging technology, is increasingly utilizing concentrating power technology in solar power plants, with the structural stability of parabolic trough collectors being crucial in maintaining optical and thermal efficiencies under wind loads. The study highlights the impact of wind loads on slope deviations and the importance of yaw and pitch angles in collector design, as well as the differences in performance between collectors made of different materials.
Article
Green & Sustainable Science & Technology
Natraj, K. S. Reddy
Summary: Solar parabolic trough collectors are a mature technology, but improvements in structural stability and accuracy of reflectors and receivers are necessary. This study investigates the combined effect of thermo-structural instability on collector performance. Results show a decrease in optical efficiency and significant loss due to bending and deflection in the reflector and receiver. This research will benefit the design and monitoring of trough collectors.
Review
Thermodynamics
Tawfiq Chekifi, Moustafa Boukraa
Summary: This article presents a comprehensive review of the performance improvement research on parabolic trough collectors, with a focus on works using numerical methods. It outlines the possible further developments of these devices and identifies areas that need more attention and investigation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Mridul Sharma, Ravindra Jilte
Summary: The effect of symmetrical convex-concave corrugations on a parabolic trough solar collector's receiver pipe is investigated numerically. Twelve different geometrically configured receiver pipes with corrugations are examined, with varying corrugation pitch (4mm to 10mm) and height (1.5mm to 2.5mm). The study determines heat transfer enhancement, flow behavior, and overall thermal performance of fluid under non-uniform heat flux conditions. The presence of corrugations leads to axial whirling and vortices, enhancing heat transfer, with the receiver pipe having 8mm pitch and 2mm height giving the best results. The maximum enhancement in average Nusselt number over a smooth pipe is observed to be 28.51%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Ying-Kun Zhao, Biao Lei, Yu-Ting Wu, Rui-Ping Zhi, Wei Wang, Hang Guo, Chong-Fang Ma
Article
Thermodynamics
Xiaochen Hou, Hongguang Zhang, Tenglong Zhao, Yonghong Xu, Yaming Tian, Jian Li, Mengru Zhang, Yuting Wu
Article
Energy & Fuels
Xiong Yaxuan, Wang Zhenyu, Wu Yuting, Xu Peng, Ding Yulong, Chang Chun, Ma Chongfang
Article
Energy & Fuels
Yong Li, Yuanwei Lu, Yuting Wu, Bengt Sunden, Gongnan Xie
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2019)
Article
Energy & Fuels
Lu-lu Zou, Xia Chen, Yu-ting Wu, Xin Wang, Chong-fang Ma
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Energy & Fuels
Xia Chen, Yu-ting Wu, Lu-di Zhang, Xin Wang, Chong-fang Ma
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Thermodynamics
Jian Li, Hongguang Zhang, Yaming Tian, Xiaochen Hou, Yonghong Xu, Tenglong Zhao, Yuting Wu
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
B. Cardenas, T. R. Davenne, J. Wang, Y. Ding, Y. Jin, H. Chen, Y. Wu, S. D. Garvey
APPLIED THERMAL ENGINEERING
(2019)
Article
Energy & Fuels
Xiaoming Zhang, Yuting Wu, Chongfang Ma, Qiang Meng, Xiao Hu, Cenyu Yang
Article
Energy & Fuels
Ying Li, Xia Chen, Yuting Wu, Yuanwei Lu, Ruiping Zhi, Xin Wang, Chongfang Ma
Article
Thermodynamics
Dawen Peng, Yuanwei Lu, Cancan Zhang, Qiang Yu, Yuting Wu
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
Yuting Wu, Zhiyu Guo, Biao Lei, Lili Shen, Ruiping Zhi
Proceedings Paper
Energy & Fuels
Peng Xu, Xiaoyu Guo, Yaxuan Xiong, Yuting Wu, Chongfang Ma
INNOVATIVE SOLUTIONS FOR ENERGY TRANSITIONS
(2019)
Proceedings Paper
Energy & Fuels
Yaxuan Xiong, Zhenyu Wang, Peng Xu, Chen Hongbing, Yuting Wu
INNOVATIVE SOLUTIONS FOR ENERGY TRANSITIONS
(2019)
Article
Chemistry, Multidisciplinary
Lixia Sang, Wenming Ai, Tai Liu, Yuting Wu, Chongfang Ma