Article
Energy & Fuels
Shuxue Mei, Xiaorui Lu, Yu Zhu, Shixue Wang
Summary: A novel configuration strategy for cogeneration systems based on SOFCs was proposed, which can adjust the system's heat-to-power ratio and improve overall performance. The study focused on the influence of circulating water utilization mode on system efficiency, and found that water cycling between the thermoelectric generator and the absorber of the absorption heat pump was the most efficient. Implementing this strategy can help expand the application scenarios of SOFC cogeneration systems to meet energy demand needs.
Article
Thermodynamics
W. Q. Li, Y. X. Li, T. H. Yang, T. Y. Zhang, F. Qin
Summary: This article proposes a thermal-energy management method based on heat pipe-assisted hybrid foam/paraffin phase change material (PCM) and thermoelectric power generator (TEG) for passive cooling, heat storage and energy harvest. The experimental results indicate that adding heat pipe can further reduce the heat-source temperature and regulate the thermoelectric energy output.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Energy & Fuels
Niti Kammuang-Lue, Chinphat Patanathabutr, Phrut Sakulchangsatjatai, Pradit Terdtoon
Summary: This research aimed to investigate the thermal characteristics of a rotating closed-loop pulsating heat pipe (RCLPHP) for integrating into rotating-type energy storage devices. The study observed the thermal characteristics from the start-up state to the post-critical state. It found that the RCLPHP exhibited temperature fluctuations in the evaporator and condenser sections during normal operation, and the internal phenomena of the working fluid resembled a slug-train. When the RCLPHP reached the critical state, the condenser section temperature subsequently decreased.
Article
Nuclear Science & Technology
Yin Zhang, Xiaoming Chai, Chenglong Wang, Simiao Tang, Dalin Zhang, Wenxi Tian, G. H. Su, Suizheng Qiu
Summary: This paper presents the principle of a heat pipe reactor and its application in an experimental device. Through steady-state experiments and CFD simulations, the heat transfer performance of heat pipes and the thermoelectric conversion efficiency of TEGs are verified.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Thermodynamics
Yang Liu, Ruowei Zheng, Tong Tian, Ji Li
Summary: A novel thermal storage heat pipe charged with phase change material and graphene nanoplatelets was designed to improve thermal management and sustainability.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Jiateng Zhao, Yucheng Dai, Zengpeng Wang, Yongheng Liu, Wang Xu, Yu Mao, Chongbo Wang
Summary: A novel embedded heat pipe was designed for electric thermal energy storage. Experimental results showed that the embedded heat pipe had good heat transfer performance and temperature uniformity. The heat storage module had a relatively uniform temperature distribution during the storage process, although there was a large radial temperature difference. In the release process, the overall temperature uniformity of the module was good. Additionally, the thermal response of the module was fast, making it potentially useful in building heating applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nuclear Science & Technology
Simiao Tang, Xiao Liu, Chenglong Wang, Dalin Zhang, G. H. Su, Wenxi Tian, Suizheng Qiu
Summary: Heat pipe cooled reactor with static conversion is gaining attention for its advantages. Xian Jiaotong University designed a 100 kW reactor called NUSTER-100. A multi-physics coupling analysis platform was established for NUSTER-100 using the finite element software COMSOL Multiphysics. The thermal-electrical coupling characteristics of the reactor were investigated under different operating conditions, revealing changes in temperature, output power, and conversion efficiency.
ANNALS OF NUCLEAR ENERGY
(2022)
Article
Thermodynamics
Noriyuki Watanabe, Takuji Mizutani, Hosei Nagano
Summary: A miniature loop heat pipe (mLHP) has been developed for cooling compact wide bandgap power semiconductors with high heat flux and high allowable operating temperature. The mLHP, consisting of an evaporator, a condenser, and transport tubes, can achieve excellent heat transfer performance using specific materials and cooling methods. The proposed steady-state numerical model is consistent with experimental results, with a relative error of 7%.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Yaohua Zhao, Yubo Wang, Zhenhua Quan, Lincheng Wang, Yuchen Zhang, Qianwen Zhang
Summary: In this paper, a novel micro heat pipe array-phase change thermal storage device (MHPA-PCTSD) with a highly rational heat transfer structure is proposed to improve the thermal storage rate. Numerical modeling and analysis show that the arrangement of the MHPA on both sides of the HTF channel (Type B) has a significant advantage over traditional arrangements, achieving better temperature uniformity and lower thermal resistance.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Wei-Wei Wang, Hong-Fei Yang, Hong-Liang Zhang, Tian-You Xu, Fu-Yun Zhao, Shi-Jing Wu
Summary: This paper explores a method of utilizing pulsating heat pipes to enhance the conversion efficiency of thermoelectric modules by effectively recovering low-grade energy and converting it into electricity. The study analyzes the effects of various factors on the performance of the PHP-TEG hybrid system and finds that heat inputs and working fluids are the key factors affecting the output voltage, while filling ratios have no effect. The slight effect of inclination angles on heat transfer and thermoelectric generation is attributed to the advantages of surface tension. Additionally, the study investigates the impact of inlet temperature and flow velocity of cooling water on thermal recovery efficiency and thermoelectric conversion performance.
Article
Energy & Fuels
Simiao Tang, Chenglong Wang, Dalin Zhang, Wenxi Tian, Guanghui Su, Suizheng Qiu
Summary: The heat pipe cooled reactor is designed to meet future energy demands with advantages such as modularity, solid state, high reliability, and passive safety. In this study, a finite element model is established to investigate the thermoelectric performance of the TEG coupled with heat pipes, and experimental validation is conducted to verify the numerical model accuracy, with a maximum simulation error within 5%. The research provides insights into the application potential of TEGs in static heat pipe cooled reactors and lays foundations for multiphysics coupling analysis of micro heat pipe cooled reactors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Jose Miguel Maldonado, David Verez, Alvaro de Gracia, Luisa F. Cabeza
Summary: This study experimentally evaluated the implementation of heat pipes in latent heat thermal energy storage systems. The results showed that heat pipe systems have faster heat transfer rates during charging processes compared to shell and tubes systems, but the low conductivity of the storing material cushioned the high heat transfer rates.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Saeed Rahmanian, Amin Shahsavar, Hossein Rahmanian-Koushkaki, Milad Setareh, Muesluem Arici
Summary: This study focuses on the effect of ultrasonic waves on the melting performance of a double-pipe latent heat exchanger system. By comparing the performance of conventional systems with and without ultrasonic waves, it was found that ultrasonic waves can decrease the melting time of the phase change material. Furthermore, the study investigates the effect of transducer position and power on thermal energy absorption.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Zhiying Song, Jie Ji, Jingyong Cai, Zhaomeng Li, Kedong Han
Summary: A novel heat pump system is proposed in this paper, with the addition of TEG in the condenser to improve the electrical and total performance of the system, while utilizing MCHP to collect heat. Experimental results show that TEG has a significant impact on system performance under low solar radiation conditions.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Chemical
Yongqing Wang, Tatiana Morosuk, Shaohui Yang, Wensheng Cao
Summary: This paper proposes a method of utilizing industrial waste heat to produce fresh water through thermal desalination, with the introduction of an ATES unit to improve energy efficiency. The system design and operating modes are described, demonstrating the application and performance of the system in various modes.