Evaluation of Several Types of High Temperature Heat Transfer Fluids for Concentrated Solar Power System

2018 ◽  
Author(s):  
Ye Zhang ◽  
Yuanyuan Li ◽  
Peiwen Li
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Power System ◽  
Solar Power ◽  
Concentrated Solar Power ◽  
Heat Transfer Fluids ◽  
Temperature Heat

A Novel Concentrated Solar Power System Hybrid Trough and Tower Collectors

2012 ◽  
Author(s):  
Wei Han ◽  
Hongguang Jin ◽  
Rumou Lin ◽  
Yalong Wang ◽  
Jianfeng Su
Keyword(s):  
High Temperature ◽  
Power System ◽  
Hybrid System ◽  
Thermal Efficiency ◽  
Concentration Ratio ◽  
Solar Power ◽  
Energy Resource ◽  
Concentrated Solar Power ◽  
Temperature Heat ◽  
The Individual

Global warming, fossil fuel shortage, and environment pollution are a growing concern on concentrated solar power (CSP) because of the largest amount of energy resource. Parabolic troughs and power towers are state-of-the-art commercial technologies. The primary drawbacks of current CSP technologies are low thermal efficiency and high investment cost. In the current study, a novel CSP system is proposed. This system integrates a solar parabolic trough power system and a solar tower power system. In this hybrid system the tower collectors with high concentration ratio generate high-temperature heat at 574 °C, and the trough collectors with a relative low concentration ratio generate mid-temperature heat at 390 °C. The mid-temperature heat from trough collectors generates steam up to 370 °C. The steam is then superheated and reheated by the high-temperature heat generated by the tower collectors. Compared with an individual solar trough plant, the temperatures of the primary and reheated steam are increased from individual trough plant’s 370 °C in the individual trough plant to 535 °C in the hybrid system, thus increasing the conversion efficiency from heat to power. Based on the simulation results, the annual thermal efficiency of the hybrid system can reach 15.84%, higher by 1.77 and 2.29 percentage points compared with those of the individual solar trough and tower plants. The electricity generation cost of the new system can be decreased by 7.5% to 12.4% compared with that of the individual trough or tower plants. The results obtained in the present study provide a new approach for utilizing solar energy more efficiently and more economically.

Use of metallic nanoparticles to improve the thermophysical properties of organic heat transfer fluids used in concentrated solar power

Solar Energy ◽  
2014 ◽  
Vol 105 ◽  
pp. 468-478 ◽  
Author(s):  
Dileep Singh ◽  
Elena V. Timofeeva ◽  
Michael R. Moravek ◽  
Sreeram Cingarapu ◽  
Wenhua Yu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermophysical Properties ◽  
Metallic Nanoparticles ◽  
Solar Power ◽  
Concentrated Solar Power ◽  
Heat Transfer Fluids

Review on influencing parameters in the performance of concentrated solar power collector based on materials, heat transfer fluids and design

2019 ◽  
Vol 140 (1) ◽  
pp. 33-51 ◽  
Author(s):  
Duraisamy Ramalingam Rajendran ◽  
Esakkimuthu Ganapathy Sundaram ◽  
Paulraj Jawahar ◽  
Vaithilingam Sivakumar ◽  
Omid Mahian ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Solar Power ◽  
Concentrated Solar Power ◽  
Heat Transfer Fluids ◽  
Influencing Parameters

High-Temperature Heat Transport and Storage Using LBE Alloy for Concentrated Solar Power System

2015 ◽  
Author(s):  
Jin-Soo Kim ◽  
Adrian Dawson ◽  
Robert Wilson ◽  
Kishore Venkatesan ◽  
Wesley Stein
Keyword(s):  
High Temperature ◽  
Heat Transport ◽  
Solar Power ◽  
Liquid Metals ◽  
Test System ◽  
Concentrated Solar Power ◽  
Power Cycles ◽  
Operation Temperature ◽  
Air Turbine ◽  
Temperature Heat

Liquid metals have received growing attention as a potential replacement for more conventional heat transfer fluids in concentrated solar power (CSP) systems. Owing to liquid metals high thermal conductivity, an increase in solar receiver efficiency as well as higher serviceable temperatures could enable more advanced power cycles to be integrated to the CSP system. Recently, CSIRO carried out research on a solar air turbine system which includes a demonstration of a high-temperature pressurized air receiver combined with high-temperature thermal storage. Since the operation temperature of a solar air turbine system is much higher than that of conventional CSP systems, Lead-Bismuth Eutectic (LBE) alloy was chosen for its favorable high temperature heat transport properties and relative ease of storage. The heat test apparatus consisted of a LBE-air heat exchanger, storage tanks with internal heating elements and a pumping system developed by CSIRO. During the test, approximately 1,000 kg of LBE was successfully pumped while capturing and storing approximately 35MJ of solar energy. The test successfully transferred heat from the solar air receiver to the LBE, with the temperature of stored LBE reaching over 770 °C. This paper will present the concept of the test system, design of its components, procedures and results of the test, and also lessons learnt.

Experimental Study of Hygroscopy of Single and Different Mixtures of MgCl2, KCl, NaCl, ZnCl2 for Application As Heat Transfer Fluids in CSP

2018 ◽  
Author(s):  
Xiaoxin Wang ◽  
Qichao Hu ◽  
Gil-Pyo Kim ◽  
Xiankun Xu ◽  
Peiwen Li ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Molten Salts ◽  
Ambient Air ◽  
Treatment Method ◽  
Concentrated Solar Power ◽  
Molten Chloride ◽  
Heat Transfer Fluids ◽  
Temperature Heat ◽  
Chloride Salts ◽  
Trace Water

Eutectic molten chloride salts by MgCl2, ZnCl2, KCl, and NaCl are considered as promising high temperature heat transfer and thermal storage fluid in concentrated solar power (CSP) systems. However, chloride salts MgCl2 and ZnCl2 are water affinity, so they can absorb water from surroundings easily. This will increase the corrosion of metals when the molten salts stay with metals at high temperatures. Our study also found that the presence of trace water in the solid salt caused vapor pressure of the molten salts increase. The current work presents studies about the kinetic processes of water absorption and removal from single and different mixture of NaCl, KCl, MgCl2 and ZnCl2 salts. The process of water uptake from ambient air and removal through heating are measured quantitatively. Water removal from molten salts through sparging with argon gas was employed as a further treatment method.

scholarly journals Assessment of Solar Power Tower Driven Ultra Supercritical Steam Cycles Applying Tubular Central Receivers With Varied Heat Transfer Media

2009 ◽  
Author(s):  
Cs. Singer ◽  
R. Buck ◽  
R. Pitz-Paal ◽  
H. Mu¨ller-Steinhagen
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Cost Reduction ◽  
Power Plants ◽  
Reduction Potential ◽  
Solar Power ◽  
Liquid Metals ◽  
Specific Investment ◽  
Temperature Heat ◽  
Electricity Costs

In commercial power plant technology, the market introduction of ultra supercritical (USC) steam cycle power plants with steam parameters around 350bar and 720°C is the next development step. USC steam cycles are also proposed to decrease the levelized electricity costs of future solar power towers due to their highly efficient energy conversion. A 55% thermal efficiency with decreased specific investment costs is within the potential of USC steam cycles. The required process parameters can be achieved using nickel based alloys in the solar receiver, the tubing and other plant components. For solar tower applications, appropriate high temperature heat transfer media (HTM), high temperature heat exchangers and storage options are additionally required. Using the current development for molten salt power towers (Solar Tres) as a reference, several tower concepts with USC power plants were compared. The ECOSTAR methodology provided by [1] was applied for predicting the cost reduction potential and the annual performance of these power tower concepts applying tubular receivers with various HTM. The considered HTM include alkali nitrate salts, alkali chloride salts and liquid metals such as a Bi-Pb eutectic, tin or sodium. For the assessment, an analytical model of the heat transfer in a parametric 360° cylindrical, tubular central receiver was developed to examine the receiver characteristics for different geometries. The sensitivity of the specific cost assumptions for the levelized electricity costs (LEC) was evaluated for each concept variation. No detailed evaluation was done for the thermal storage, but comparable costs were assumed for all cases. The results indicate a significant cost reduction potential for the liquid metal HTM processes.

scholarly journals Containment materials for liquid tin at 1350 °C as a heat transfer fluid for high temperature concentrated solar power

Solar Energy ◽  
2018 ◽  
Vol 164 ◽  
pp. 47-57 ◽  
Author(s):  
Yunshu Zhang ◽  
Ye Cai ◽  
SungHwan Hwang ◽  
Gregory Wilk ◽  
Freddy DeAngelis ◽  
...  
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Solar Power ◽  
Heat Transfer Fluid ◽  
Concentrated Solar Power ◽  
Liquid Tin
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