Article
Energy & Fuels
Ting Chen, Anping Wan, Qiang Zuo, Zipeng Tang, Yunchan Shin, Jiahong Fu, Luoke Hu
Summary: A combined cooling system of adsorption cooling system and ice slurry thermal energy storage is proposed to improve the performance and power output of a conventional combined cycle power plant (CCPP). A simplified model is developed to predict the CCPP power output under different inlet air temperatures, which is verified with practical operational data. The power outputs and economic analyses of CCPP-CombC with different cooling energy storage scales are evaluated. For the present CCPP, AdCS with a maximum cooling capacity of 6000 kW and ISTES with 600 GJ of cooling energy storage completely cover the cooling demand of the CCPP. The net profit of the CCPP-CombC increases first and then decreases, with the maximum net profit appearing when the cooling energy storage is 500 GJ.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Feng Zhang, Junbin Zhou, Gaoliang Liao, E. Jiaqiang, Mingye You, Chenxu Yang
Summary: Waste heat recovery is an efficient way to reduce fuel consumption and carbon dioxide emissions. In shipboards, recovering gas turbine exhaust can provide power and cooling. Combined cooling and power systems (CCPs) integrating sCO2 power cycle with tCO2 refrigeration cycle are considered competitive and promising. This study proposes a novel CCP based on two traditional CCPs and analyzes its performance through parametric analyses, optimizations, and exergy analyses. The results show that the proposed system can significantly improve net power output while maintaining comparable refrigeration capacity and total product unit cost, and reduce exergy destructions compared to traditional systems.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Pietropaolo Morrone, Mario Amelio, Angelo Algieri, Diego Perrone
Summary: The aim of the research was to evaluate the energy performance of different combined cycle configurations fueled by natural gas and lignocellulosic biomass. Based on the results, the BIFRCC system was found to be the most suitable option with high biomass efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Anping Wan, Jie Yang, Ting Chen, Jiayong Huang
Summary: The proposed CCPP-AdCS with a maximum cooling capacity of 6000 kW is able to achieve the largest desorption and cooling capacity at 60 degrees Celsius. Compared to traditional CCPP, CCPP-AdCS can significantly improve power output and has higher energy efficiency increment.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Shukun Wang, Lu Zhang, Chao Liu, Zuming Liu, Song Lan, Qibin Li, Xiaonan Wang
Summary: This study proposed a novel combined cooling, heating, and power system structure and discussed its techno-economic-environmental performance through comparative analysis, parametric study, and multi-objective optimization. The optimal results revealed the system's performance metrics, and a comparative study found that the proposed system structure exhibited excellent thermodynamic performance but worse economic performance compared to alternative integrated systems.
Article
Energy & Fuels
Christopher Olkis, Stefano Brandani, Giulio Santori
Summary: The study demonstrates that utilizing ultra low temperature heat released by steam power plants, combined with adsorption desalination and reverse electrodialysis technology, can reduce thermal pollution and generate electricity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Multidisciplinary
Emir Huseyin Ozder, Haci Mehmet Alakas, Evrencan Ozcan, Tamer Eren
Summary: This study focuses on staff scheduling problems in a natural gas combined cycle power plant, where a constraint programming model has been developed to improve scheduling efficiency and make the process more effective.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Simone Braccio, Nolwenn Le Pierres, Nicolas Tauveron, Bertrand Chandez, Hai Trieu Phan
Summary: The integration of an expander in an absorption machine allows for simultaneous cooling and electricity production, harnessing low-temperature heat sources more efficiently than separate cycles. However, there are very few experimental studies on this technology. A pilot plant with a single stage ammonia water absorption chiller was developed to gain a deeper understanding of the interactions between power and cooling production.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Sehyeok Lee, Dohoon Kim, Honggeun Ha, Min Soo Kim
Summary: This study proposes a novel pressure recovery system, integrated with multi-stage feedwater fuel preheaters, to improve the efficiency of combined cycle power plants connected to natural gas supply stations. Preheating the fuel to 350 degrees C reduces fuel consumption by 2.06% while maintaining the gas turbine inlet temperature. Furthermore, implementing pressure recovery and fuel preheating concurrently increases the efficiency by an additional 0.163%p.
Article
Thermodynamics
Nguyen Phan, Hosei Nagano
Summary: Two miniature loop heat pipes with novel hybrid evaporator structures were developed for cooling electronic devices. These structures ensure good heat conduction and low heat leak, improving the thermal performance of the heat pipes.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Green & Sustainable Science & Technology
Feng Zhang, Fang Lei, Gaoliang Liao, E. Jiaqiang
Summary: This paper proposes a novel geothermal combined cooling and power system and conducts comprehensive analyses and optimizations. The results show that the system outperforms the traditional absorption refrigeration cycle in terms of thermodynamic and exergoeconomic performance.
Article
Thermodynamics
Yu Yao, Lingfeng Shi, Hua Tian, Xuan Wang, Xiaocun Sun, Yonghao Zhang, Zirui Wu, Rui Sun, Gequn Shu
Summary: This study proposes a combined cooling and power cycle (CCP) system using CO2-based mixtures to achieve multi-mode transformations for diverse cooling and power demands. The results show that CO2/R32 mixture is recommended for its superior output capacity, adjustability, and lower investment cost. Compared to traditional CO2 systems and standalone refrigerators, the CCP system using CO2/R32 can achieve significant power and cooling enhancements.
Article
Energy & Fuels
G. Ramkumar, Najamussahar H. Mulla, Chirag Vibhakar, M. Tamilselvi, S. Boopathi, Ngangbam Phalguni Singh, S. Gomathi, V. Mohanavel, Ravishankar Sathyamurthy
Summary: Energy storage can improve the imbalance in solar to electric power ratios in a Combined Heating, cooling and power system. However, it also adds complexity to the operational efficiency of the device. This paper presents a unique tri-generation method based on the Trans-critical Brayton cycle and carbon dioxide energy storage, and optimizes its operations.
Article
Thermodynamics
Muhammad Reshaeel, Adeel Javed, Ahmad Jamil, Majid Ali, Mariam Mahmood, Adeel Waqas
Summary: The study focuses on optimizing the configuration of an organic Rankine cycle for waste heat recovery. The results show that the double stage reheated organic Rankine cycle outperforms other configurations and leads to an increase in power output and improved efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Muhammad Kashif Shahzad, Yaqi Ding, Yongmei Xuan, Neng Gao, Guangming Chen
Summary: A new multifunctional hybrid open absorption system is proposed to utilize waste heat for heating, dehumidification, and cooling applications. The system can provide heating capacity, recover water, and achieve cooling capacity efficiently through waste heat recovery and heat exchange.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)