A lab-scale solar reactor, equipped with a porous CeO2 structure with dual-scale porosity for CO2 and H2O splitting, has been simulated and validated using available experimental results. The valid...
{"title":"3D modelling of a solar thermochemical reactor for MW scaling-up studies","authors":"Stylianos Kyrimis, P. L. Clercq, S. Brendelberger","doi":"10.1063/1.5117693","DOIUrl":"https://doi.org/10.1063/1.5117693","url":null,"abstract":"A lab-scale solar reactor, equipped with a porous CeO2 structure with dual-scale porosity for CO2 and H2O splitting, has been simulated and validated using available experimental results. The valid...","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75225045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, a study of the effect of the plant location in the hydrogen production plant based on ceria thermochemical cycle is presented. This study consists of the analysis of the annual performance of a 1 MWth continuous hydrogen production plant in ten locations along Australia. The analysis was performed by using the model developed by the same authors and presented in SolarPACES 2017 [1]. Overall, the results showed that locating a plant in a sunny area can increase the solar-to-fuel efficiency in around 4% within the locations under investigation. Oppositely to previous works, this work demonstrates that the optical losses together with the annual DNI distribution play the most critical role into obtaining the highest possible efficiency in a solar driven hydrogen production plant.
{"title":"Effect of plant location on the annual performance of a hydrogen production plant based on CeO2 thermochemical cycle","authors":"A. Bayon, A. Calle","doi":"10.1063/1.5117683","DOIUrl":"https://doi.org/10.1063/1.5117683","url":null,"abstract":"In this work, a study of the effect of the plant location in the hydrogen production plant based on ceria thermochemical cycle is presented. This study consists of the analysis of the annual performance of a 1 MWth continuous hydrogen production plant in ten locations along Australia. The analysis was performed by using the model developed by the same authors and presented in SolarPACES 2017 [1]. Overall, the results showed that locating a plant in a sunny area can increase the solar-to-fuel efficiency in around 4% within the locations under investigation. Oppositely to previous works, this work demonstrates that the optical losses together with the annual DNI distribution play the most critical role into obtaining the highest possible efficiency in a solar driven hydrogen production plant.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75726410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We describe the design of a small thermal desalination unit for use in refugee camps or in emergency situations that might be found after natural disasters. The thermal evaporation and condenser stages are separated for higher efficiency and the process is powered by low-cost PMMA concentrating Fresnel lenses. The overall concept is explained, and the detailed design is presented. The durability of the PMMA lenses is discussed. The design is calculated to produce up to 100 litres of fresh water per day in MENA regions with DNI>700 W/m2 over 8 hours, assuming 50% efficiency. Two manufactured prototypes are to be built in Israel and deployed in Palestine and Jordan for field testing.We describe the design of a small thermal desalination unit for use in refugee camps or in emergency situations that might be found after natural disasters. The thermal evaporation and condenser stages are separated for higher efficiency and the process is powered by low-cost PMMA concentrating Fresnel lenses. The overall concept is explained, and the detailed design is presented. The durability of the PMMA lenses is discussed. The design is calculated to produce up to 100 litres of fresh water per day in MENA regions with DNI>700 W/m2 over 8 hours, assuming 50% efficiency. Two manufactured prototypes are to be built in Israel and deployed in Palestine and Jordan for field testing.
{"title":"Concentrating Fresnel lens technology for thermal desalination","authors":"C. Sansom, X. Tonnellier, P. King, H. Almond","doi":"10.1063/1.5117767","DOIUrl":"https://doi.org/10.1063/1.5117767","url":null,"abstract":"We describe the design of a small thermal desalination unit for use in refugee camps or in emergency situations that might be found after natural disasters. The thermal evaporation and condenser stages are separated for higher efficiency and the process is powered by low-cost PMMA concentrating Fresnel lenses. The overall concept is explained, and the detailed design is presented. The durability of the PMMA lenses is discussed. The design is calculated to produce up to 100 litres of fresh water per day in MENA regions with DNI>700 W/m2 over 8 hours, assuming 50% efficiency. Two manufactured prototypes are to be built in Israel and deployed in Palestine and Jordan for field testing.We describe the design of a small thermal desalination unit for use in refugee camps or in emergency situations that might be found after natural disasters. The thermal evaporation and condenser stages are separated for higher efficiency and the process is powered by low-cost PMMA concentrating Fresnel lenses. The overall concept is explained, and the detailed design is presented. The durability of the PMMA lenses is discussed. The design is calculated to produce up to 100 litres of fresh water per day in MENA regions with DNI>700 W/m2 over 8 hours, assuming 50% efficiency. Two manufactured prototypes are to be built in Israel and deployed in Palestine and Jordan for field testing.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"146 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78287017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The objective of this paper is the evaluation of trends when a power-to-heat system with electrical heaters is integrated to a molten salt solar tower to additionally charge the thermal energy storage system and to expand the capacity of the CSP plant. Therefore a techno-economic analysis was carried out considering several economical and technical boundary conditions. The results show a significant impact on the availability of excess electricity and its cost. Depending on system layout and the cost of the used electricity the overall LCOE of such plants can be reduced by up to 25%. Therefore such power-to-heat systems can offer an economic and strategic benefit to solar thermal power plants.
{"title":"Power-to-heat in CSP systems for capacity expansion","authors":"S. Giuliano, Michael Puppe, Kareem Noureldin","doi":"10.1063/1.5117589","DOIUrl":"https://doi.org/10.1063/1.5117589","url":null,"abstract":"The objective of this paper is the evaluation of trends when a power-to-heat system with electrical heaters is integrated to a molten salt solar tower to additionally charge the thermal energy storage system and to expand the capacity of the CSP plant. Therefore a techno-economic analysis was carried out considering several economical and technical boundary conditions. The results show a significant impact on the availability of excess electricity and its cost. Depending on system layout and the cost of the used electricity the overall LCOE of such plants can be reduced by up to 25%. Therefore such power-to-heat systems can offer an economic and strategic benefit to solar thermal power plants.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76515113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper describes experimental work performed at Cranfield University to investigate some of the factors that affect the soiling of glass mirrors. An experimental test rig was built and the factors tested were temperatures, particle size, relative humidity, the type of sand, and the drop height of the particles. The results showed that humidity had the largest effect on the amount of sand that stuck to the mirror. In addition whether the sand was natural or artificial also seemed to have an effect on the results, perhaps due to soluble materials.
{"title":"An experimental investigation into factors affecting the soiling of glass mirrors","authors":"P. King, C. Sansom, H. Almond, H. Abdulkarim","doi":"10.1063/1.5117667","DOIUrl":"https://doi.org/10.1063/1.5117667","url":null,"abstract":"This paper describes experimental work performed at Cranfield University to investigate some of the factors that affect the soiling of glass mirrors. An experimental test rig was built and the factors tested were temperatures, particle size, relative humidity, the type of sand, and the drop height of the particles. The results showed that humidity had the largest effect on the amount of sand that stuck to the mirror. In addition whether the sand was natural or artificial also seemed to have an effect on the results, perhaps due to soluble materials.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86811292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The development of a particle-to-sCO2 heat exchanger is a critical step toward the realization of a particle-based CSP system. In this paper, the work on the integration and future testing of a 100 kWt moving packed-bed heat exchanger prototype is reported. The device will be integrated with the falling particle receiver test loop at Sandia National Laboratories and integrated with a high-pressure sCO2 flow loop for heat rejection. A testing campaign is described including low-temperature ( 700 °C. Furthermore, the development of an sCO2 mixing Tee is described, which allows for the sCO2 flow loop to be operated at temperatures over 700 °C without requiring high-temperature heat rejection or significant amounts of high-nickel piping.The development of a particle-to-sCO2 heat exchanger is a critical step toward the realization of a particle-based CSP system. In this paper, the work on the integration and future testing of a 100 kWt moving packed-bed heat exchanger prototype is reported. The device will be integrated with the falling particle receiver test loop at Sandia National Laboratories and integrated with a high-pressure sCO2 flow loop for heat rejection. A testing campaign is described including low-temperature ( 700 °C. Furthermore, the development of an sCO2 mixing Tee is described, which allows for the sCO2 flow loop to be operated at temperatures over 700 °C without requiring high-temperature heat rejection or significant amounts of high-nickel piping.
{"title":"Integration, control, and testing of a high-temperature particle-to-sCO2 heat exchanger","authors":"Kevin Albrecht, M. Carlson, C. Ho","doi":"10.1063/1.5117513","DOIUrl":"https://doi.org/10.1063/1.5117513","url":null,"abstract":"The development of a particle-to-sCO2 heat exchanger is a critical step toward the realization of a particle-based CSP system. In this paper, the work on the integration and future testing of a 100 kWt moving packed-bed heat exchanger prototype is reported. The device will be integrated with the falling particle receiver test loop at Sandia National Laboratories and integrated with a high-pressure sCO2 flow loop for heat rejection. A testing campaign is described including low-temperature ( 700 °C. Furthermore, the development of an sCO2 mixing Tee is described, which allows for the sCO2 flow loop to be operated at temperatures over 700 °C without requiring high-temperature heat rejection or significant amounts of high-nickel piping.The development of a particle-to-sCO2 heat exchanger is a critical step toward the realization of a particle-based CSP system. In this paper, the work on the integration and future testing of a 100 kWt moving packed-bed heat exchanger prototype is reported. The device will be integrated with the falling particle receiver test loop at Sandia National Laboratories and integrated with a high-pressure sCO2 flow loop for heat rejection. A testing campaign is described including low-temperature ( 700 °C. Furthermore, the development of an sCO2 mixing Tee is described, which allows for the sCO2 flow loop to be operated at temperatures over 700 °C without requiring high-temperature heat rejection or significant amounts of high-nickel piping.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87910764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The use of hybrid solar thermal devices, which harness the energy from both concentrated solar radiation and combustion, is receiving growing attention due to their potential to provide a firm and dispatchable thermal energy supply while lowering the costs of energy systems and assisting the penetration of renewable energy. The Hybrid Solar Receiver Combustor (HSRC), which directly integrates the function of a solar receiver and a combustor into a single device, is a particularly promising hybrid technology. Its design allows the receiver to operate in three modes: solar-only, combustion-only and a mixed-mode (a combination of both solar and combustion). Compared with the present state-of-the-art in hybrid solar-combustion systems (which collect the thermal energy from the solar and combustion sources in separate devices and then combine them subsequently), the HSRC offers a reduction in total infrastructure (and hence capital costs), heat-exchange surface area, start-up/shut-down losses and pollutant emi...
{"title":"Performance characteristics of a hybrid solar receiver combustor utilising hydrogen or syngas","authors":"A. Chinnici, G. Nathan, B. Dally","doi":"10.1063/1.5117606","DOIUrl":"https://doi.org/10.1063/1.5117606","url":null,"abstract":"The use of hybrid solar thermal devices, which harness the energy from both concentrated solar radiation and combustion, is receiving growing attention due to their potential to provide a firm and dispatchable thermal energy supply while lowering the costs of energy systems and assisting the penetration of renewable energy. The Hybrid Solar Receiver Combustor (HSRC), which directly integrates the function of a solar receiver and a combustor into a single device, is a particularly promising hybrid technology. Its design allows the receiver to operate in three modes: solar-only, combustion-only and a mixed-mode (a combination of both solar and combustion). Compared with the present state-of-the-art in hybrid solar-combustion systems (which collect the thermal energy from the solar and combustion sources in separate devices and then combine them subsequently), the HSRC offers a reduction in total infrastructure (and hence capital costs), heat-exchange surface area, start-up/shut-down losses and pollutant emi...","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"128 S11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91546721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ricardo Conceição, A. A. Merrouni, D. Lopes, Azouzoute Alae, H. Silva, E. Bennouna, M. Collares-Pereira, A. Ghennioui
Soiling is a factor of major importance regarding any solar energy conversion technology, as in Photovoltaic (PV) panels and, namely, in concentrated solar power (CSP), since scattering due to particle deposition severely reduces the mirror’s reflectance. Concerned with this problem, a collaboration between the Renewable Energies Chair, University of Evora, Portugal and the Institut de Recherche en Energie Solaire et Energies Nouvelles, Morocco, was created to investigate and compare soiling in mirrors in both locations. This research enables the comparison between particle deposition effects in the two climates, crucial to implement mitigation measures. Southern Portugal and Northern Africa have considerable potential for future CSP installations, which makes this study relevant from an economical point of view, as it may influence the maintenance procedures and expected energy production of such CSP plants.Soiling is a factor of major importance regarding any solar energy conversion technology, as in Photovoltaic (PV) panels and, namely, in concentrated solar power (CSP), since scattering due to particle deposition severely reduces the mirror’s reflectance. Concerned with this problem, a collaboration between the Renewable Energies Chair, University of Evora, Portugal and the Institut de Recherche en Energie Solaire et Energies Nouvelles, Morocco, was created to investigate and compare soiling in mirrors in both locations. This research enables the comparison between particle deposition effects in the two climates, crucial to implement mitigation measures. Southern Portugal and Northern Africa have considerable potential for future CSP installations, which makes this study relevant from an economical point of view, as it may influence the maintenance procedures and expected energy production of such CSP plants.
{"title":"A comparative study of soiling on solar mirrors in Portugal and Morocco: Preliminary results for the dry season","authors":"Ricardo Conceição, A. A. Merrouni, D. Lopes, Azouzoute Alae, H. Silva, E. Bennouna, M. Collares-Pereira, A. Ghennioui","doi":"10.1063/1.5117760","DOIUrl":"https://doi.org/10.1063/1.5117760","url":null,"abstract":"Soiling is a factor of major importance regarding any solar energy conversion technology, as in Photovoltaic (PV) panels and, namely, in concentrated solar power (CSP), since scattering due to particle deposition severely reduces the mirror’s reflectance. Concerned with this problem, a collaboration between the Renewable Energies Chair, University of Evora, Portugal and the Institut de Recherche en Energie Solaire et Energies Nouvelles, Morocco, was created to investigate and compare soiling in mirrors in both locations. This research enables the comparison between particle deposition effects in the two climates, crucial to implement mitigation measures. Southern Portugal and Northern Africa have considerable potential for future CSP installations, which makes this study relevant from an economical point of view, as it may influence the maintenance procedures and expected energy production of such CSP plants.Soiling is a factor of major importance regarding any solar energy conversion technology, as in Photovoltaic (PV) panels and, namely, in concentrated solar power (CSP), since scattering due to particle deposition severely reduces the mirror’s reflectance. Concerned with this problem, a collaboration between the Renewable Energies Chair, University of Evora, Portugal and the Institut de Recherche en Energie Solaire et Energies Nouvelles, Morocco, was created to investigate and compare soiling in mirrors in both locations. This research enables the comparison between particle deposition effects in the two climates, crucial to implement mitigation measures. Southern Portugal and Northern Africa have considerable potential for future CSP installations, which makes this study relevant from an economical point of view, as it may influence the maintenance procedures and expected energy production of such CSP plants.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88938213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Baeyens, Huili Zhang, Weibin Kong, P. Dumont, G. Flamant
The solar horizontal bubbling fluidized bed concept developed within the SOLPART research project can be used as a solar receiver-reactor. This application offers a considerable industrial potential, as illustrated in the paper further to different experiments and industrial contacts. The most demanding application is the calcination of limestone, either as pure calcite, or as 85% mix in cement raw meal. The decomposition temperature exceeds 850 °C (nearly the application limits of refractory steel alloys). Other calcinations (e.g. dolomite, gypsum, phosphate rock, meta-kaolin, clays, etc.) are less demanding since occurring at a lower calcination temperature and with an endothermic reaction heat that is significantly lower than the reaction heat of CaCO3, which is therefore considered as a relevant test case.The solar horizontal bubbling fluidized bed concept developed within the SOLPART research project can be used as a solar receiver-reactor. This application offers a considerable industrial potential, as illustrated in the paper further to different experiments and industrial contacts. The most demanding application is the calcination of limestone, either as pure calcite, or as 85% mix in cement raw meal. The decomposition temperature exceeds 850 °C (nearly the application limits of refractory steel alloys). Other calcinations (e.g. dolomite, gypsum, phosphate rock, meta-kaolin, clays, etc.) are less demanding since occurring at a lower calcination temperature and with an endothermic reaction heat that is significantly lower than the reaction heat of CaCO3, which is therefore considered as a relevant test case.
{"title":"Solar thermal treatment of non-metallic minerals: The potential application of the SOLPART technology","authors":"J. Baeyens, Huili Zhang, Weibin Kong, P. Dumont, G. Flamant","doi":"10.1063/1.5117682","DOIUrl":"https://doi.org/10.1063/1.5117682","url":null,"abstract":"The solar horizontal bubbling fluidized bed concept developed within the SOLPART research project can be used as a solar receiver-reactor. This application offers a considerable industrial potential, as illustrated in the paper further to different experiments and industrial contacts. The most demanding application is the calcination of limestone, either as pure calcite, or as 85% mix in cement raw meal. The decomposition temperature exceeds 850 °C (nearly the application limits of refractory steel alloys). Other calcinations (e.g. dolomite, gypsum, phosphate rock, meta-kaolin, clays, etc.) are less demanding since occurring at a lower calcination temperature and with an endothermic reaction heat that is significantly lower than the reaction heat of CaCO3, which is therefore considered as a relevant test case.The solar horizontal bubbling fluidized bed concept developed within the SOLPART research project can be used as a solar receiver-reactor. This application offers a considerable industrial potential, as illustrated in the paper further to different experiments and industrial contacts. The most demanding application is the calcination of limestone, either as pure calcite, or as 85% mix in cement raw meal. The decomposition temperature exceeds 850 °C (nearly the application limits of refractory steel alloys). Other calcinations (e.g. dolomite, gypsum, phosphate rock, meta-kaolin, clays, etc.) are less demanding since occurring at a lower calcination temperature and with an endothermic reaction heat that is significantly lower than the reaction heat of CaCO3, which is therefore considered as a relevant test case.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78484570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
New heat transfer and storage media offer for solar tower systems a much broader temperature range. Higher temperatures allow the integration of steam power cycles with increased efficiency. The present study evaluates modular solar tower plants using solid particles as heat transfer medium (HTM), allowing temperatures up to 1000°C. In a parameter study the influence of upper and lower HTM temperature on levelized cost of electricity (LCOE) is evaluated. The results show a significant impact of the HTM temperature selection, mainly governed by the HTM temperature difference. A high temperature difference results in reduced LCOE. The most important factors for this reduction are the cost decrease of particle inventory, storage containment, and particle steam generator. This decrease is partially offset by an increase in heliostat field and tower cost. The results indicate that the use of solid particles for high efficiency steam power cycles offers unique advantages due to the wide temperature range of the particles.
{"title":"Solar tower system temperature range optimization for reduced LCOE","authors":"R. Buck, S. Giuliano","doi":"10.1063/1.5117522","DOIUrl":"https://doi.org/10.1063/1.5117522","url":null,"abstract":"New heat transfer and storage media offer for solar tower systems a much broader temperature range. Higher \u0000temperatures allow the integration of steam power cycles with increased efficiency. The present study evaluates modular solar tower plants using solid particles as heat transfer medium (HTM), allowing temperatures up to 1000°C. In a parameter study the influence of upper and lower HTM temperature on levelized cost of electricity (LCOE) is evaluated. The results show a significant impact of the HTM temperature selection, mainly governed by the HTM temperature difference. A high temperature difference results in reduced LCOE. The most important factors for this reduction are the cost decrease of particle inventory, storage containment, and particle steam generator. This decrease is partially offset by an increase in heliostat field and tower cost. The results indicate that the use of solid particles for high efficiency steam power cycles offers unique advantages due to the wide temperature range of the particles.","PeriodicalId":21790,"journal":{"name":"SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73908966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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