The Experts below are selected from a list of 6687 Experts worldwide ranked by ideXlab platform

Paul Denholm - One of the best experts on this subject based on the ideXlab platform.

  • Role of Concentrating Solar Power in Integrating Solar and Wind Energy: Preprint
    2015
    Co-Authors: Paul Denholm, Mark Mehos
    Abstract:

    As wind and Solar photovoltaics (PV) increase in penetration it is increasingly important to examine enabling technologies that can help integrate these resources at large scale. Concentrating Solar Power (CSP) when deployed with thermal energy storage (TES) can provide multiple services that can help integrate variable generation (VG) resources such as wind and PV. CSP with TES can provide firm, highly flexible capacity, reducing minimum generation constraints which limit penetration and results in curtailment. By acting as an enabling technology, CSP can complement PV and wind, substantially increasing their penetration in locations with adequate Solar resource.

  • Benefits of Colocating Concentrating Solar Power and Wind
    IEEE Transactions on Sustainable Energy, 2013
    Co-Authors: Ramteen Sioshansi, Paul Denholm
    Abstract:

    We analyze the potential benefits of colocating wind and Concentrating Solar Power (CSP) plants in the southwestern U.S. Using a location in western Texas as a case study, we demonstrate that such a deployment strategy can improve the capacity factor of the combined plant and the associated transmission investment. This is because of two synergies between wind and CSP: 1) the negative correlation between real-time wind and Solar resource availability and 2) the use of low-cost high-efficiency thermal energy storage in CSP. The economic tradeoff between transmission and system performance is highly sensitive to CSP and transmission costs. We demonstrate that a number of deployment configurations, which include up to 67% CSP, yield a positive net return on investment.

  • Potential Role of Concentrating Solar Power in Enabling High Renewables Scenarios in the United States
    2012
    Co-Authors: Paul Denholm, Maureen Hand, Trieu Mai, Robert Margolis, Gregory Brinkman, Easan Drury, Matthew Mowers, C. Turchi
    Abstract:

    This work describes the analysis of Concentrating Solar Power (CSP) in two studies -- The SunShot Vision Study and the Renewable Electricity Futures Study -- and the potential role of CSP in a future energy mix.

  • Transmission Benefits of Co-Locating Concentrating Solar Power and Wind
    2012
    Co-Authors: Ramteen Sioshansi, Paul Denholm
    Abstract:

    In some areas of the U.S. transmission constraints are a limiting factor in deploying new wind and Concentrating Solar Power (CSP) plants. Texas is an example of one such location, where the best wind and Solar resources are in the western part of the state, while major demand centers are in the east. The low capacity factor of wind is a compounding factor, increasing the relative cost of new transmission per unit of energy actually delivered. A possible method of increasing the utilization of new transmission is to co-locate both wind and Concentrating Solar Power with thermal energy storage. In this work we examine the benefits and limits of using the dispatachability of thermal storage to increase the capacity factor of new transmission developed to access high quality Solar and wind resources in remote locations.

  • how thermal energy storage enhances the economic viability of Concentrating Solar Power
    Proceedings of the IEEE, 2012
    Co-Authors: Seyed Hossein Madaeni, Ramteen Sioshansi, Paul Denholm
    Abstract:

    This paper examines the economic performance and rationale of Concentrating Solar Power (CSP) with and without thermal energy storage (TES). We demonstrate that TES can increase the energy and capacity value of CSP and also show that adding TES to a CSP plant can increase its economic viability by increasing its operating revenues to the point that the capital cost of CSP can be justified.

Qianjun Mao - One of the best experts on this subject based on the ideXlab platform.

  • Numerical simulation on heat transfer characteristics of the storage tank for Concentrating Solar Power plant
    Advances in Mechanical Engineering, 2016
    Co-Authors: Qianjun Mao, Liya Zhang
    Abstract:

    Concentrating Solar Power plant coupling with energy storage is a new and emerging technology, which can solve two issues, that is, low flux density and intermittent of Solar energy. Heat transfer ...

  • Recent developments in geometrical configurations of thermal energy storage for Concentrating Solar Power plant
    Renewable and Sustainable Energy Reviews, 2016
    Co-Authors: Qianjun Mao
    Abstract:

    Concentrating Solar Power plant coupling with thermal energy storage is a new and emerging technology in the renewable energy field. A multitude of research works focus on improving the performance of the Power plant for getting the higher efficiency and lower cost. Due to the poor thermal conductivity of phase change materials and complex physical/chemical heat transfer process in the storage tank, geometrical configurations of the storage tank are vital for the system's performance, thus affect the large-scale application of Concentrating Solar Power plant. This paper presents a review of geometrical configuration of thermal energy storage tank by summarizing a series of numerical, experimental and theoretical studies in the open literatures. A widespread discussion for thermal energy storage tank in future application has been proposed in the paper. The results can provide a good reference for designing, operating, and energy-saving of thermal energy storage system for Concentrating Solar Power plants.

  • Design and calculation of a new storage tank for Concentrating Solar Power plant
    Energy Conversion and Management, 2015
    Co-Authors: Qianjun Mao, Liya Zhang, Xiaoyan Liu
    Abstract:

    Abstract Concentrating Solar Power plant coupling with thermal energy storage is a popular technology during the Solar application process. A multitude of researches focus on improving heat transfer performance of the whole system for getting the higher efficiency and lower cost. In this paper, a new storage tank for Concentrating Solar Power has been designed, and the mathematical model of one-dimensional unsteady state heat conduction in cylindrical coordinates has been established and validated. Also, the charge time and the temperature of the tank have been investigated in the designing conditions based on this model. The results show that the new storage tank has a superior performance for the system in the charge period. The charge time from unsteady state to steady state heat conduction for the tank is about 9923 s. It can be found that there is a relatively good agreement of about 18.9% for the charge time between the mathematical model and the reference. The curve of the temperature versus the charge time for different thermal properties of the materials based on the model of this paper has been investigated. The results can provide a good reference for designing, operating, and energy-saving of thermal energy storage for Concentrating Solar Power plants.

Ramteen Sioshansi - One of the best experts on this subject based on the ideXlab platform.

  • Benefits of Colocating Concentrating Solar Power and Wind
    IEEE Transactions on Sustainable Energy, 2013
    Co-Authors: Ramteen Sioshansi, Paul Denholm
    Abstract:

    We analyze the potential benefits of colocating wind and Concentrating Solar Power (CSP) plants in the southwestern U.S. Using a location in western Texas as a case study, we demonstrate that such a deployment strategy can improve the capacity factor of the combined plant and the associated transmission investment. This is because of two synergies between wind and CSP: 1) the negative correlation between real-time wind and Solar resource availability and 2) the use of low-cost high-efficiency thermal energy storage in CSP. The economic tradeoff between transmission and system performance is highly sensitive to CSP and transmission costs. We demonstrate that a number of deployment configurations, which include up to 67% CSP, yield a positive net return on investment.

  • Transmission Benefits of Co-Locating Concentrating Solar Power and Wind
    2012
    Co-Authors: Ramteen Sioshansi, Paul Denholm
    Abstract:

    In some areas of the U.S. transmission constraints are a limiting factor in deploying new wind and Concentrating Solar Power (CSP) plants. Texas is an example of one such location, where the best wind and Solar resources are in the western part of the state, while major demand centers are in the east. The low capacity factor of wind is a compounding factor, increasing the relative cost of new transmission per unit of energy actually delivered. A possible method of increasing the utilization of new transmission is to co-locate both wind and Concentrating Solar Power with thermal energy storage. In this work we examine the benefits and limits of using the dispatachability of thermal storage to increase the capacity factor of new transmission developed to access high quality Solar and wind resources in remote locations.

  • how thermal energy storage enhances the economic viability of Concentrating Solar Power
    Proceedings of the IEEE, 2012
    Co-Authors: Seyed Hossein Madaeni, Ramteen Sioshansi, Paul Denholm
    Abstract:

    This paper examines the economic performance and rationale of Concentrating Solar Power (CSP) with and without thermal energy storage (TES). We demonstrate that TES can increase the energy and capacity value of CSP and also show that adding TES to a CSP plant can increase its economic viability by increasing its operating revenues to the point that the capital cost of CSP can be justified.

  • the value of Concentrating Solar Power and thermal energy storage
    IEEE Transactions on Sustainable Energy, 2010
    Co-Authors: Ramteen Sioshansi, Paul Denholm
    Abstract:

    This paper examines the value of Concentrating Solar Power (CSP) and thermal energy storage (TES) in a number of regions in the southwestern United States. Our analysis shows that TES can increase the value of CSP by allowing more thermal energy from a CSP plant's Solar field to be used, allowing a CSP plant to accommodate a larger Solar field, and by allowing CSP generation to be shifted to hours with higher energy prices. We analyze the sensitivity of this value to a number of factors, including the optimization period, price and Solar forecasting, ancillary service sales, and dry cooling of the CSP plant, and also estimate the capacity value of a CSP plant with TES. We further discuss the value of CSP plants and TES net of capital costs.

  • Value of Concentrating Solar Power and Thermal Energy Storage
    2010
    Co-Authors: Ramteen Sioshansi, Paul Denholm
    Abstract:

    This paper examines the value of Concentrating Solar Power (CSP) and thermal energy storage (TES) in four regions in the southwestern United States. Our analysis shows that TES can increase the value of CSP by allowing more thermal energy from a CSP plant?s Solar field to be used, by allowing a CSP plant to accommodate a larger Solar field, and by allowing CSP generation to be shifted to hours with higher energy prices. We analyze the sensitivity of CSP value to a number of factors, including the optimization period, price and Solar forecasting, ancillary service sales, capacity value and dry cooling of the CSP plant. We also discuss the value of CSP plants and TES net of capital costs

Junjie Yan - One of the best experts on this subject based on the ideXlab platform.

  • Steam generation system operation optimization in parabolic trough Concentrating Solar Power plants under cloudy conditions
    Applied Energy, 2020
    Co-Authors: Anming Wang, Jiping Liu, Zhang Shunqi, Ming Liu, Junjie Yan
    Abstract:

    Abstract Parabolic trough Concentrating Solar Power with indirect thermal energy storage, as a promising application of Solar energy, has been widely used in Concentrating Solar Power plants. The exergy efficiency of thermal energy storage system and plant parasitic Power consumption could change under cloudy conditions when the thermal oil distribution was adjusted to the live steam branch and reheat steam branch. However, the operating condition optimization of steam generation system has received insufficient attention. This study designed a detailed fixed-Power-supply model of parabolic trough Concentrating Solar Power plants to optimize the operation strategies under various conditions. The parametric constraints, which worked on the optimization, were investigated under various direct normal irradiation values. Simulation results indicated that the low reheat steam temperature, thermal oil mass flow rate of the live steam branch, and live steam pressure reduced the molten salt temperature at the discharging exchangers and plant parasitic Power consumption. The distribution mode of preferentially satisfactory distribution of reheat steam branch demand had low molten salt consumption and high exergy efficiency of thermal energy storage. The molten salt consumptions under optimal conditions were 0.98%–13.68% lower than the consumption under original conditions with the decreasing direct normal irradiation from 300 W/m2 to 210 W/m2.

  • Thermodynamic and economic analyses of a parabolic trough Concentrating Solar Power plant under off-design conditions
    Applied Thermal Engineering, 2019
    Co-Authors: Anming Wang, Ming Liu, Junjie Yan, Xiaoqu Han, Jiping Liu
    Abstract:

    Abstract As Concentrating Solar Power technologies progressively move to maturity, large-scale Concentrating Solar Power plants have elicited increasing attention. The thermodynamic simulation and economic analyses of a 50 MW parabolic trough Concentrating Solar Power plant in northwest China were conducted in the present work. The effects of meteorological conditions, including direct normal irradiance and ambient temperature, on the off-design performances were investigated by simulation calculations. Furthermore, economic and sensitive analyses were conducted based on the annual simulation. Results show that the back-pressure of air-cooled condenser fluctuated with both ambient temperature and Power generation. The Power generation of summer and autumn days would decrease by 0.53–1.38 MW for the rise of condenser back-pressure. The clouds mainly affected the molten salt level of hot tank in thermal energy storage. In the economic analysis, with the decrease of the feed-in tariff from 16.6 ₵/kWh to 8.6 ₵/kWh, the maximum total net income dropped from 6.65 M$ to 2.43 M$. The optimal design condenser back-pressure rose from 5.0 kPa to 5.5 kPa. Moreover, the optimal design back-pressure of air-cooled condenser was not sensitive to the cloud effect in certain range, but the total net income had a sharp drop from 7.37 M$ to 4.95 M$.

Jiping Liu - One of the best experts on this subject based on the ideXlab platform.

  • Steam generation system operation optimization in parabolic trough Concentrating Solar Power plants under cloudy conditions
    Applied Energy, 2020
    Co-Authors: Anming Wang, Jiping Liu, Zhang Shunqi, Ming Liu, Junjie Yan
    Abstract:

    Abstract Parabolic trough Concentrating Solar Power with indirect thermal energy storage, as a promising application of Solar energy, has been widely used in Concentrating Solar Power plants. The exergy efficiency of thermal energy storage system and plant parasitic Power consumption could change under cloudy conditions when the thermal oil distribution was adjusted to the live steam branch and reheat steam branch. However, the operating condition optimization of steam generation system has received insufficient attention. This study designed a detailed fixed-Power-supply model of parabolic trough Concentrating Solar Power plants to optimize the operation strategies under various conditions. The parametric constraints, which worked on the optimization, were investigated under various direct normal irradiation values. Simulation results indicated that the low reheat steam temperature, thermal oil mass flow rate of the live steam branch, and live steam pressure reduced the molten salt temperature at the discharging exchangers and plant parasitic Power consumption. The distribution mode of preferentially satisfactory distribution of reheat steam branch demand had low molten salt consumption and high exergy efficiency of thermal energy storage. The molten salt consumptions under optimal conditions were 0.98%–13.68% lower than the consumption under original conditions with the decreasing direct normal irradiation from 300 W/m2 to 210 W/m2.

  • Thermodynamic and economic analyses of a parabolic trough Concentrating Solar Power plant under off-design conditions
    Applied Thermal Engineering, 2019
    Co-Authors: Anming Wang, Ming Liu, Junjie Yan, Xiaoqu Han, Jiping Liu
    Abstract:

    Abstract As Concentrating Solar Power technologies progressively move to maturity, large-scale Concentrating Solar Power plants have elicited increasing attention. The thermodynamic simulation and economic analyses of a 50 MW parabolic trough Concentrating Solar Power plant in northwest China were conducted in the present work. The effects of meteorological conditions, including direct normal irradiance and ambient temperature, on the off-design performances were investigated by simulation calculations. Furthermore, economic and sensitive analyses were conducted based on the annual simulation. Results show that the back-pressure of air-cooled condenser fluctuated with both ambient temperature and Power generation. The Power generation of summer and autumn days would decrease by 0.53–1.38 MW for the rise of condenser back-pressure. The clouds mainly affected the molten salt level of hot tank in thermal energy storage. In the economic analysis, with the decrease of the feed-in tariff from 16.6 ₵/kWh to 8.6 ₵/kWh, the maximum total net income dropped from 6.65 M$ to 2.43 M$. The optimal design condenser back-pressure rose from 5.0 kPa to 5.5 kPa. Moreover, the optimal design back-pressure of air-cooled condenser was not sensitive to the cloud effect in certain range, but the total net income had a sharp drop from 7.37 M$ to 4.95 M$.