The Experts below are selected from a list of 5055 Experts worldwide ranked by ideXlab platform

Uendo Lee - One of the best experts on this subject based on the ideXlab platform.

  • quasi equilibrium thermodynamic model with empirical equations for air Steam Biomass Gasification in fluidized beds
    Fuel Processing Technology, 2014
    Co-Authors: Youngil Lim, Uendo Lee
    Abstract:

    Abstract Gasification is one of the most promising technologies for converting Biomass into a fuel. This study presents a simple and practical Biomass Gasification model based on thermodynamic equilibrium to find effective operating conditions of the air–Steam Gasification system in fluidized-beds. The carbon conversion fraction empirically obtained was involved in a global Gasification reaction. Two empirical equations as the non-equilibrium factor expressing the deviation from equilibrium were derived as the function of the equivalence ratio ( ER ) from 43 experimental data sets of various operating conditions and different feedstocks. One energy balance was also solved for determining the Gasification temperature ( T ). After the producer gas composition with respect to ER and Steam to Biomass ratio ( SBR ) was obtained from the air–Steam Biomass Gasification (ASBG) model, process performances such as lower heating value, heat efficiency, net heat efficiency, and H 2 /CO molar ratio were evaluated. An effective operating area was suggested from the contour plot of the process performances with respect to ER and SBR in the auto-thermal Gasification temperature from 700 to 830 °C.

  • Quasi-equilibrium thermodynamic model with empirical equations for air–Steam Biomass Gasification in fluidized-beds
    Fuel Processing Technology, 2014
    Co-Authors: Youngil Lim, Uendo Lee
    Abstract:

    Abstract Gasification is one of the most promising technologies for converting Biomass into a fuel. This study presents a simple and practical Biomass Gasification model based on thermodynamic equilibrium to find effective operating conditions of the air–Steam Gasification system in fluidized-beds. The carbon conversion fraction empirically obtained was involved in a global Gasification reaction. Two empirical equations as the non-equilibrium factor expressing the deviation from equilibrium were derived as the function of the equivalence ratio ( ER ) from 43 experimental data sets of various operating conditions and different feedstocks. One energy balance was also solved for determining the Gasification temperature ( T ). After the producer gas composition with respect to ER and Steam to Biomass ratio ( SBR ) was obtained from the air–Steam Biomass Gasification (ASBG) model, process performances such as lower heating value, heat efficiency, net heat efficiency, and H 2 /CO molar ratio were evaluated. An effective operating area was suggested from the contour plot of the process performances with respect to ER and SBR in the auto-thermal Gasification temperature from 700 to 830 °C.

Haifeng Wu - One of the best experts on this subject based on the ideXlab platform.

  • thermodynamics analysis of a novel Steam air Biomass Gasification combined cooling heating and power system with solar energy
    Applied Thermal Engineering, 2020
    Co-Authors: Haifeng Wu, Jie Zheng, Bosheng Su
    Abstract:

    Abstract In order to mitigate inherent intermittency of solar energy and satisfy the energy demands, a novel Steam/air Biomass Gasification combined cooling, heating and power system with solar energy is proposed in this work. In the system concentrated solar energy collected with dish optical configuration is used to generate high temperature Steam, which acts as a Gasification agent to drive the Biomass Gasification. When solar radiation intensity is lower than the design point (the maximum in whole year), the hybrid Steam/air Biomass Gasification model is conducted for continuous syngas production. Syngas based chemical energy is released for trigeneration in a distributed system. The reaction kinetics models of Steam-Biomass Gasification using solar energy are developed and the thermodynamics performances of the system are numerical investigated. Under the designate conditions, the primary energy efficiency reaches 51.34%. Based on the local weather data, the off-design performances of the system and the annual energy-saving potential are evaluated. Compared with the reference system that combines a conventional air Biomass Gasification trigeneration system and a solar dish/Stirling engine system, the new system has remarkable advantage in thermal performances. An economic analysis is conducted to evaluate the technical feasibility of the proposed system. This research provides a promising method for the efficient utilization of Biomass and solar energy.

Bosheng Su - One of the best experts on this subject based on the ideXlab platform.

  • thermodynamics analysis of a novel Steam air Biomass Gasification combined cooling heating and power system with solar energy
    Applied Thermal Engineering, 2020
    Co-Authors: Haifeng Wu, Jie Zheng, Bosheng Su
    Abstract:

    Abstract In order to mitigate inherent intermittency of solar energy and satisfy the energy demands, a novel Steam/air Biomass Gasification combined cooling, heating and power system with solar energy is proposed in this work. In the system concentrated solar energy collected with dish optical configuration is used to generate high temperature Steam, which acts as a Gasification agent to drive the Biomass Gasification. When solar radiation intensity is lower than the design point (the maximum in whole year), the hybrid Steam/air Biomass Gasification model is conducted for continuous syngas production. Syngas based chemical energy is released for trigeneration in a distributed system. The reaction kinetics models of Steam-Biomass Gasification using solar energy are developed and the thermodynamics performances of the system are numerical investigated. Under the designate conditions, the primary energy efficiency reaches 51.34%. Based on the local weather data, the off-design performances of the system and the annual energy-saving potential are evaluated. Compared with the reference system that combines a conventional air Biomass Gasification trigeneration system and a solar dish/Stirling engine system, the new system has remarkable advantage in thermal performances. An economic analysis is conducted to evaluate the technical feasibility of the proposed system. This research provides a promising method for the efficient utilization of Biomass and solar energy.

Youngil Lim - One of the best experts on this subject based on the ideXlab platform.

  • quasi equilibrium thermodynamic model with empirical equations for air Steam Biomass Gasification in fluidized beds
    Fuel Processing Technology, 2014
    Co-Authors: Youngil Lim, Uendo Lee
    Abstract:

    Abstract Gasification is one of the most promising technologies for converting Biomass into a fuel. This study presents a simple and practical Biomass Gasification model based on thermodynamic equilibrium to find effective operating conditions of the air–Steam Gasification system in fluidized-beds. The carbon conversion fraction empirically obtained was involved in a global Gasification reaction. Two empirical equations as the non-equilibrium factor expressing the deviation from equilibrium were derived as the function of the equivalence ratio ( ER ) from 43 experimental data sets of various operating conditions and different feedstocks. One energy balance was also solved for determining the Gasification temperature ( T ). After the producer gas composition with respect to ER and Steam to Biomass ratio ( SBR ) was obtained from the air–Steam Biomass Gasification (ASBG) model, process performances such as lower heating value, heat efficiency, net heat efficiency, and H 2 /CO molar ratio were evaluated. An effective operating area was suggested from the contour plot of the process performances with respect to ER and SBR in the auto-thermal Gasification temperature from 700 to 830 °C.

  • Quasi-equilibrium thermodynamic model with empirical equations for air–Steam Biomass Gasification in fluidized-beds
    Fuel Processing Technology, 2014
    Co-Authors: Youngil Lim, Uendo Lee
    Abstract:

    Abstract Gasification is one of the most promising technologies for converting Biomass into a fuel. This study presents a simple and practical Biomass Gasification model based on thermodynamic equilibrium to find effective operating conditions of the air–Steam Gasification system in fluidized-beds. The carbon conversion fraction empirically obtained was involved in a global Gasification reaction. Two empirical equations as the non-equilibrium factor expressing the deviation from equilibrium were derived as the function of the equivalence ratio ( ER ) from 43 experimental data sets of various operating conditions and different feedstocks. One energy balance was also solved for determining the Gasification temperature ( T ). After the producer gas composition with respect to ER and Steam to Biomass ratio ( SBR ) was obtained from the air–Steam Biomass Gasification (ASBG) model, process performances such as lower heating value, heat efficiency, net heat efficiency, and H 2 /CO molar ratio were evaluated. An effective operating area was suggested from the contour plot of the process performances with respect to ER and SBR in the auto-thermal Gasification temperature from 700 to 830 °C.

Jie Zheng - One of the best experts on this subject based on the ideXlab platform.

  • thermodynamics analysis of a novel Steam air Biomass Gasification combined cooling heating and power system with solar energy
    Applied Thermal Engineering, 2020
    Co-Authors: Haifeng Wu, Jie Zheng, Bosheng Su
    Abstract:

    Abstract In order to mitigate inherent intermittency of solar energy and satisfy the energy demands, a novel Steam/air Biomass Gasification combined cooling, heating and power system with solar energy is proposed in this work. In the system concentrated solar energy collected with dish optical configuration is used to generate high temperature Steam, which acts as a Gasification agent to drive the Biomass Gasification. When solar radiation intensity is lower than the design point (the maximum in whole year), the hybrid Steam/air Biomass Gasification model is conducted for continuous syngas production. Syngas based chemical energy is released for trigeneration in a distributed system. The reaction kinetics models of Steam-Biomass Gasification using solar energy are developed and the thermodynamics performances of the system are numerical investigated. Under the designate conditions, the primary energy efficiency reaches 51.34%. Based on the local weather data, the off-design performances of the system and the annual energy-saving potential are evaluated. Compared with the reference system that combines a conventional air Biomass Gasification trigeneration system and a solar dish/Stirling engine system, the new system has remarkable advantage in thermal performances. An economic analysis is conducted to evaluate the technical feasibility of the proposed system. This research provides a promising method for the efficient utilization of Biomass and solar energy.

  • Thermodynamics analysis of a novel Steam/air Biomass Gasification combined cooling, heating and power system with solar energy
    Applied Thermal Engineering, 2020
    Co-Authors: Qibin Liu, Zhang Bai, Gengxin Xie, Jie Zheng
    Abstract:

    Abstract In order to mitigate inherent intermittency of solar energy and satisfy the energy demands, a novel Steam/air Biomass Gasification combined cooling, heating and power system with solar energy is proposed in this work. In the system concentrated solar energy collected with dish optical configuration is used to generate high temperature Steam, which acts as a Gasification agent to drive the Biomass Gasification. When solar radiation intensity is lower than the design point (the maximum in whole year), the hybrid Steam/air Biomass Gasification model is conducted for continuous syngas production. Syngas based chemical energy is released for trigeneration in a distributed system. The reaction kinetics models of Steam-Biomass Gasification using solar energy are developed and the thermodynamics performances of the system are numerical investigated. Under the designate conditions, the primary energy efficiency reaches 51.34%. Based on the local weather data, the off-design performances of the system and the annual energy-saving potential are evaluated. Compared with the reference system that combines a conventional air Biomass Gasification trigeneration system and a solar dish/Stirling engine system, the new system has remarkable advantage in thermal performances. An economic analysis is conducted to evaluate the technical feasibility of the proposed system. This research provides a promising method for the efficient utilization of Biomass and solar energy.