scholarly journals Comparative Study of Conventional and Water Circulating-Heat Sink Cooling Base Thermoelectric Generator System for Optimum Solar Thermal Waste Heat Recovery

2021 ◽  
Vol 25 (4) ◽  
pp. 503-509
Author(s):  
A. Yusuf ◽  
M.H. Ali
Keyword(s):  
Power Generation ◽  
Heat Sink ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Thermal Power ◽  
Solar Thermal ◽  
Circulating Water ◽  
Solar Thermal Power ◽  
Solar Thermal Power Generation

A novel technique for waste heat recovery in solar thermal power generation is investigated through experimentation and  systematically presented. Power generation using Thermoelectric Generator (TEG) is a promising technique in waste heat recovery application. In this topology, TEG array is directly attached to the back of the solar Photovoltaic panel (model AP-AM15) to receive the transmitted heat at the back of the PV panel as waste heat. More so, a circulating water-heat sink is attached to the TEG cold side to improve the temperature gradient. Base on Seebeck effect, the TEG directly converts the temperature difference into electricity. The experimental result shows that efficiency between the range of 2.1% and 4.7% for the conventional cooling system while the output power approximately ranges between 0.05W and 0.47W, the circulating water-heat sink technique has efficiency ranging between 2.9% and 10.3% with output power between the range of 0.10W and 2.2W. The daily average increase in efficiency was found to be 263.76%. This shows that the daily average power is improved by a factor of 2.6376 with the water circulating water-heat sink technique. This is an indication of waste heat recovery from the solar thermal power generation.

scholarly journals Comprehensive Research on Application and Optimization of Heat Storage Technology Under Different Industrial Demand: Based on Medium and Low Temperature

2020 ◽  
Vol 9 (2) ◽  
pp. 27
Author(s):  
Zhenrui Zhang
Keyword(s):  
Power Generation ◽  
Thermal Energy ◽  
Heat Storage ◽  
Waste Heat ◽  
Thermal Power ◽  
Solar Thermal ◽  
Storage Technology ◽  
Solar Thermal Power ◽  
Heat Storage Materials ◽  
Solar Thermal Power Generation

<p>Heat storage technology is one of the key technologies in the field of solar thermal power generation and cogeneration. It uses heat storage materials as the media to store solar thermal energy, industrial waste heat, low-grade waste heat and other kinds of thermal energy, and release it when needed, so as to solve the mismatch between energy supply and demand. This paper introduces the classification and characteristics of heat storage technology, analyzes the research progress of heat storage technology in the fields of solar thermal power generation, heat storage materials and industrial drying, and forecasts the development trend of heat storage technology in the future. The results indicate that heat storage technology is beneficial to improve industrial production efficiency, broaden industrial energy conservation and emission reduction ideas, and has a great application prospect under the continuous improvement of practitioners with innovative spirit.</p>

Possibility of solar thermal power generation technologies in Nigeria: Challenges and policy directions

2019 ◽  
Vol 29 ◽  
pp. 24-41 ◽  
Author(s):  
Daniel Akinyele ◽  
Olubayo Babatunde ◽  
Chukwuka Monyei ◽  
Lanre Olatomiwa ◽  
Adebunmi Okediji ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermal Power ◽  
Solar Thermal ◽  
Solar Thermal Power ◽  
Thermal Power Generation ◽  
Solar Thermal Power Generation

Central Receiver System Solar Power Plant Using Molten Salt as Heat Transfer Fluid

2008 ◽  
Vol 130 (2) ◽  
Author(s):  
J. Ignacio Ortega ◽  
J. Ignacio Burgaleta ◽  
Félix M. Téllez
Keyword(s):  
Heat Transfer ◽  
Power Generation ◽  
Molten Salt ◽  
Thermal Power ◽  
Solar Thermal ◽  
Heat Transfer Fluid ◽  
Solar Thermal Power ◽  
Central Receiver ◽  
Spanish Legislation ◽  
Solar Thermal Power Generation

Of all the technologies being developed for solar thermal power generation, central receiver systems (CRSs) are able to work at the highest temperatures and to achieve higher efficiencies in electricity production. The combination of this concept and the choice of molten salts as the heat transfer fluid, in both the receiver and heat storage, enables solar collection to be decoupled from electricity generation better than water∕steam systems, yielding high capacity factors with solar-only or low hybridization ratios. These advantages, along with the benefits of Spanish legislation on solar energy, moved SENER to promote the 17MWe Solar TRES plant. It will be the first commercial CRS plant with molten-salt storage and will help consolidate this technology for future higher-capacity plants. This paper describes the basic concept developed in this demonstration project, reviewing the experience accumulated in the previous Solar TWO project, and present design innovations, as a consequence of the development work performed by SENER and CIEMAT and of the technical conditions imposed by Spanish legislation on solar thermal power generation.

scholarly journals Modelling and control of solar thermal power generation network in smart grid

2021 ◽  
Vol 25 (4 Part B) ◽  
pp. 2861-2870
Author(s):  
Ruilian Wang ◽  
Zichao Zhang ◽  
Xinxu Wei
Keyword(s):  
Power Generation ◽  
Dynamic Response ◽  
Pid Control ◽  
Heat Storage ◽  
Storage System ◽  
Thermal Power ◽  
Solar Thermal ◽  
Proportional Integral ◽  
Solar Thermal Power ◽  
Solar Thermal Power Generation

The thermal storage system is an essential part of the trough solar thermal power generation system. Due to the strong randomness, intermittency, and volatility of solar energy resources, to further improve the system?s overall reliability to meet the needs of variable operating conditions, the paper optimizes the control strategy of the trough solar heat storage system. Taking the molten salt heat storage medium in the oil/salt heat exchanger, the core equipment of the heat storage system, as the critical research object, the article adopts proportional, integral, and differential (PID) control theories. It builds the system in the MATLAB/Simulink simulation environment mathematical model. We use the critical proportionality method to determine many critical parameters in the control system, tune the proportional coefficient, integral time, and other physical quantities in the PID controller, and analyze the proportional control, proportional-integral control, PID controls the respective dynamic response characteristics of these three different control systems. The simulation and comparative analysis results show that: compared with the other two control methods, PID control can effectively weaken the heat storage system oscillation caused by external disturbance, its dynamic response speed is faster, the adjustment time is shorter, and it can meet the requirements of operational stability. The paper adopts PID control, which reduces the control difficulty of the trough solar heat storage system and improves the adaptability to changes in external meteorological resources. The research results have particular guiding significance at the academic and engineering levels.

scholarly journals Modelling and simulation of solar thermal power generation network

2021 ◽  
Vol 25 (4 Part B) ◽  
pp. 2905-2912
Author(s):  
Bowen Wang
Keyword(s):  
Power Generation ◽  
Total Energy ◽  
Thermal Power ◽  
Energy System ◽  
Solar Thermal ◽  
Generation System ◽  
Solar Thermal Power ◽  
Power Generation System ◽  
Thermal Power Generation ◽  
Solar Thermal Power Generation

In the smart grid context, the article combines SEGS-VI solar thermal power station parameters to establish a solar thermal power generation system model. The thesis is based on the First and Second laws of thermodynamics. It uses the white box model analysis method of the energy system to calculate the solar thermal power generation system-concentrating and collecting subsystem, heat exchange subsystem, and power subsystem to obtain the subsystems dissipation of each process. Finally, the article uses the white box model analysis of the total energy system to treat the subsystems as white boxes, and connects them to form a white box network, makes a reasonable evaluation of the energy consumption status of the total energy system, and finds the weak links in the energy use process of the system. Provide a basis for system energy saving.

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