The Experts below are selected from a list of 11070 Experts worldwide ranked by ideXlab platform

Nathan P Siegel - One of the best experts on this subject based on the ideXlab platform.

  • computational fluid dynamics modeling of gas particle flow within a solid particle solar receiver
    Journal of Solar Energy Engineering-transactions of The Asme, 2007
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three-dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid-particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two-band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray-tracing algorithm. Two kinds of solid-particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the gas velocity, temperature, particle solid volume fraction, particle outlet temperature, and cavity efficiency.

  • cfd modeling of gas particle flow within a solid particle solar receiver
    Solar Energy, 2006
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray tracing algorithm. Two kinds of solid particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver. Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the particle and gas velocity, temperature, particle solid volume fraction, and cavity efficiency.Copyright © 2006 by ASME

Huajun Chen - One of the best experts on this subject based on the ideXlab platform.

  • computational fluid dynamics modeling of gas particle flow within a solid particle solar receiver
    Journal of Solar Energy Engineering-transactions of The Asme, 2007
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three-dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid-particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two-band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray-tracing algorithm. Two kinds of solid-particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the gas velocity, temperature, particle solid volume fraction, particle outlet temperature, and cavity efficiency.

  • cfd modeling of gas particle flow within a solid particle solar receiver
    Solar Energy, 2006
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray tracing algorithm. Two kinds of solid particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver. Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the particle and gas velocity, temperature, particle solid volume fraction, and cavity efficiency.Copyright © 2006 by ASME

Hsuantsung Hsieh - One of the best experts on this subject based on the ideXlab platform.

  • computational fluid dynamics modeling of gas particle flow within a solid particle solar receiver
    Journal of Solar Energy Engineering-transactions of The Asme, 2007
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three-dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid-particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two-band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray-tracing algorithm. Two kinds of solid-particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the gas velocity, temperature, particle solid volume fraction, particle outlet temperature, and cavity efficiency.

  • cfd modeling of gas particle flow within a solid particle solar receiver
    Solar Energy, 2006
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray tracing algorithm. Two kinds of solid particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver. Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the particle and gas velocity, temperature, particle solid volume fraction, and cavity efficiency.Copyright © 2006 by ASME

Yitung Chen - One of the best experts on this subject based on the ideXlab platform.

  • computational fluid dynamics modeling of gas particle flow within a solid particle solar receiver
    Journal of Solar Energy Engineering-transactions of The Asme, 2007
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three-dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid-particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two-band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray-tracing algorithm. Two kinds of solid-particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the gas velocity, temperature, particle solid volume fraction, particle outlet temperature, and cavity efficiency.

  • cfd modeling of gas particle flow within a solid particle solar receiver
    Solar Energy, 2006
    Co-Authors: Huajun Chen, Yitung Chen, Hsuantsung Hsieh, Nathan P Siegel
    Abstract:

    A detailed three dimensional computational fluid dynamics (CFD) analysis on gas-particle flow and heat transfer inside a solid particle solar receiver, which utilizes free-falling particles for direct absorption of concentrated solar radiation, is presented. The two-way coupled Euler-Lagrange method is implemented and includes the exchange of heat and momentum between the gas phase and solid particles. A two band discrete ordinate method is included to investigate radiation heat transfer within the particle cloud and between the cloud and the internal surfaces of the receiver. The direct illumination energy source that results from incident solar radiation was predicted by a solar load model using a solar ray tracing algorithm. Two kinds of solid particle receivers, each having a different Exit Condition for the solid particles, are modeled to evaluate the thermal performance of the receiver. Parametric studies, where the particle size and mass flow rate are varied, are made to determine the optimal operating Conditions. The results also include detailed information for the particle and gas velocity, temperature, particle solid volume fraction, and cavity efficiency.Copyright © 2006 by ASME

Robert E. Kohn - One of the best experts on this subject based on the ideXlab platform.

  • avoidance costs and the entry Exit Condition on polluting firms
    Scottish Journal of Political Economy, 1997
    Co-Authors: Robert E. Kohn
    Abstract:

    When marginal environmental damages increase with emissions, it is said to be a problem for entry and Exit that the marginal firm pays more in Pigouvian taxes than the actual damages it causes. Accordingly it is sometimes assumed that over the range of an individual firm's emissions, marginal environmental damages are approximately constant. When avoidance costs are added to environmental damages, however, the inequality may be reversed so that the assumption of constant marginal damages may aggravate rather than eliminate the alleged problem.

  • Do We Need the Entry-Exit Condition on Polluting Firms?
    Journal of Environmental Economics and Management, 1994
    Co-Authors: Robert E. Kohn
    Abstract:

    Abstract Given that marginal pollution damage increases with emissions, a polluting firm′s total Pigouvian tax payments will exceed the total damage that it causes. There is a long-standing concern in the environmental economics literature that this disparity could force a polluting firm to shut down even though its net social product is positive. However, such a problem exists only in a partial equilibrium analysis. In a conventional general equilibrium model with standard neoclassical, price-coordinated firms, the fact that Pigouvian taxes exceed total damages is as normal a phenomenon as producer or consumer surplus.