The Experts below are selected from a list of 232137 Experts worldwide ranked by ideXlab platform

Gang Pei - One of the best experts on this subject based on the ideXlab platform.

  • Design and Optical Evaluation of a Novel Asymmetric Lens-Walled Compound Parabolic Concentrator (ALCPC) Integration with Building South Wall
    SolarLits, 2017
    Co-Authors: Qingdong Xuan, Gang Pei
    Abstract:

    Solar concentrating system is an effective way of combing solar energy with the building to satisfy the needs besides of electricity and hot water, also includes building heating, refrigeration, dehumidification, which require higher quality heat source. This paper put forward a novel static asymmetric lens-walled compound parabolic concentrator (ALCPC), which is composed of the mirror CPC and lens-walled structure, and can make full use of the total internal reflection and specular reflection. The optical performance of the ALCPC under the real Application Condition was established by software Lighttools®. Furthermore, the optimization structure by rotating the absorber away from the wall at some specific angles was also adopted for a wider scope Applications. The results showed that the ALCPC has a large acceptance angle of 59° with highest optical efficiency of around 90% for most of the incident angles and has a relatively uniform flux distribution. In addition, annual performance analysis of the ALCPC was also done for Beijing (39°54’N, 116°23’E). The ALCPC as a static concentrator would be a good solution for the building south wall integration

  • optical evaluation of a novel static incorporated compound parabolic concentrator with photovoltaic thermal system and preliminary experiment
    Energy Conversion and Management, 2014
    Co-Authors: Gang Pei, Ming Yang
    Abstract:

    Abstract Optical performance is a significant factor for concentrating photovoltaic/thermal (PV/T) system, especially when the static concentrator is under outdoor Condition, which would indicate the preliminary characteristics of the whole system. This paper put forward a novel static incorporated compound parabolic concentrator (CPC) with PV/T system, whose concentrator is composed of the mirror CPC and lens-walled structure, and can make full use of the total internal reflection and specular reflection. The theoretical model on the optical performance of the system under real Application Condition was established and the outdoor experiment was carried out to compare the simulation evaluation. The results illustrated that the difference on optical efficiency of the simulation and experimental outcome during the test is small, and maximum of it is only approximately 5%. The study obtained the optical efficiency model on the whole day of the static incorporated compound parabolic concentrator and verified the rationality of the design which provided the guarantee for the further research on the building integrated with concentrating photovoltaic/thermal (BICPV/T) system.

Ming Yang - One of the best experts on this subject based on the ideXlab platform.

  • optical evaluation of a novel static incorporated compound parabolic concentrator with photovoltaic thermal system and preliminary experiment
    Energy Conversion and Management, 2014
    Co-Authors: Gang Pei, Ming Yang
    Abstract:

    Abstract Optical performance is a significant factor for concentrating photovoltaic/thermal (PV/T) system, especially when the static concentrator is under outdoor Condition, which would indicate the preliminary characteristics of the whole system. This paper put forward a novel static incorporated compound parabolic concentrator (CPC) with PV/T system, whose concentrator is composed of the mirror CPC and lens-walled structure, and can make full use of the total internal reflection and specular reflection. The theoretical model on the optical performance of the system under real Application Condition was established and the outdoor experiment was carried out to compare the simulation evaluation. The results illustrated that the difference on optical efficiency of the simulation and experimental outcome during the test is small, and maximum of it is only approximately 5%. The study obtained the optical efficiency model on the whole day of the static incorporated compound parabolic concentrator and verified the rationality of the design which provided the guarantee for the further research on the building integrated with concentrating photovoltaic/thermal (BICPV/T) system.

Zhang Kouchi - One of the best experts on this subject based on the ideXlab platform.

  • The interface adhesion of CaAlSiN3: Eu2+ phosphor/silicone used in light-emitting diode packaging: A first principles study
    'Elsevier BV', 2020
    Co-Authors: Cui Z., Fan J., Van Ginkel H.j., Fan Xuejun, Zhang Kouchi
    Abstract:

    The CaAlSiN3:Eu2+ red phosphor and its silicone/phosphor composite are very promising materials used in the high color rendering white light-emitting diode (LED) packaging. However, the reliabilities of CaAlSiN3:Eu2+ and its composite are still being challenged by phosphor hydrolysis at high humidity Application Condition. A fundamental understanding of the interface adhesion between silicone and CaAlSiN3:Eu2+ is significant for the developments and Applications of this material. In this work, the mechanical properties of silicone/pristine CaAlSiN3:Eu2+ and silicone/hydrolyzed CaAlSiN3:Eu2+ composites are experimentally measured and compared firstly, in which both the tensile strength and Young's modulus of composite are increased after the hydrolysis reaction. Then, the first principles Density Functional Theory (DFT) calculations are used to investigate the adhesion behaviors of the silicone molecular on both the pristine and the hydrolyzed CaAlSiN3[0 1 0] at atomic level. The results show that: (1) The silicone molecular is weakly adsorbed on the pristine CaAlSiN3[0 1 0] via Van der Waals (vdW) interactions, while silicone molecular is much stronger absorbed on the hydrolyzed CaAlSiN3[0 1 0] due to the formation of hydrogen bonding at the interface; (2) The transient state calculations indicate that the sliding energy barrier of silicone on the hydrolyzed CaAlSiN3[0 1 0] is higher than that on the pristine one, as the increased adsorption energy and surface roughness. Generally, the findings in this paper can guide the phosphor selection, storage and process in LED packaging, and also assist in improving the reliability design of LED package used in high moisture Condition.

  • The interface adhesion of CaAlSiN3: Eu2+ phosphor/silicone used in light-emitting diode packaging: A first principles study
    'Elsevier BV', 2020
    Co-Authors: Cui Z., Fan J., Van Ginkel H.j., Fan Xuejun, Zhang Kouchi
    Abstract:

    The CaAlSiN3:Eu2+ red phosphor and its silicone/phosphor composite are very promising materials used in the high color rendering white light-emitting diode (LED) packaging. However, the reliabilities of CaAlSiN3:Eu2+ and its composite are still being challenged by phosphor hydrolysis at high humidity Application Condition. A fundamental understanding of the interface adhesion between silicone and CaAlSiN3:Eu2+ is significant for the developments and Applications of this material. In this work, the mechanical properties of silicone/pristine CaAlSiN3:Eu2+ and silicone/hydrolyzed CaAlSiN3:Eu2+ composites are experimentally measured and compared firstly, in which both the tensile strength and Young's modulus of composite are increased after the hydrolysis reaction. Then, the first principles Density Functional Theory (DFT) calculations are used to investigate the adhesion behaviors of the silicone molecular on both the pristine and the hydrolyzed CaAlSiN3[0 1 0] at atomic level. The results show that: (1) The silicone molecular is weakly adsorbed on the pristine CaAlSiN3[0 1 0] via Van der Waals (vdW) interactions, while silicone molecular is much stronger absorbed on the hydrolyzed CaAlSiN3[0 1 0] due to the formation of hydrogen bonding at the interface; (2) The transient state calculations indicate that the sliding energy barrier of silicone on the hydrolyzed CaAlSiN3[0 1 0] is higher than that on the pristine one, as the increased adsorption energy and surface roughness. Generally, the findings in this paper can guide the phosphor selection, storage and process in LED packaging, and also assist in improving the reliability design of LED package used in high moisture Condition.Electronic Components, Technology and Material

Cui Z. - One of the best experts on this subject based on the ideXlab platform.

  • The interface adhesion of CaAlSiN3: Eu2+ phosphor/silicone used in light-emitting diode packaging: A first principles study
    'Elsevier BV', 2020
    Co-Authors: Cui Z., Fan J., Van Ginkel H.j., Fan Xuejun, Zhang Kouchi
    Abstract:

    The CaAlSiN3:Eu2+ red phosphor and its silicone/phosphor composite are very promising materials used in the high color rendering white light-emitting diode (LED) packaging. However, the reliabilities of CaAlSiN3:Eu2+ and its composite are still being challenged by phosphor hydrolysis at high humidity Application Condition. A fundamental understanding of the interface adhesion between silicone and CaAlSiN3:Eu2+ is significant for the developments and Applications of this material. In this work, the mechanical properties of silicone/pristine CaAlSiN3:Eu2+ and silicone/hydrolyzed CaAlSiN3:Eu2+ composites are experimentally measured and compared firstly, in which both the tensile strength and Young's modulus of composite are increased after the hydrolysis reaction. Then, the first principles Density Functional Theory (DFT) calculations are used to investigate the adhesion behaviors of the silicone molecular on both the pristine and the hydrolyzed CaAlSiN3[0 1 0] at atomic level. The results show that: (1) The silicone molecular is weakly adsorbed on the pristine CaAlSiN3[0 1 0] via Van der Waals (vdW) interactions, while silicone molecular is much stronger absorbed on the hydrolyzed CaAlSiN3[0 1 0] due to the formation of hydrogen bonding at the interface; (2) The transient state calculations indicate that the sliding energy barrier of silicone on the hydrolyzed CaAlSiN3[0 1 0] is higher than that on the pristine one, as the increased adsorption energy and surface roughness. Generally, the findings in this paper can guide the phosphor selection, storage and process in LED packaging, and also assist in improving the reliability design of LED package used in high moisture Condition.

  • The interface adhesion of CaAlSiN3: Eu2+ phosphor/silicone used in light-emitting diode packaging: A first principles study
    'Elsevier BV', 2020
    Co-Authors: Cui Z., Fan J., Van Ginkel H.j., Fan Xuejun, Zhang Kouchi
    Abstract:

    The CaAlSiN3:Eu2+ red phosphor and its silicone/phosphor composite are very promising materials used in the high color rendering white light-emitting diode (LED) packaging. However, the reliabilities of CaAlSiN3:Eu2+ and its composite are still being challenged by phosphor hydrolysis at high humidity Application Condition. A fundamental understanding of the interface adhesion between silicone and CaAlSiN3:Eu2+ is significant for the developments and Applications of this material. In this work, the mechanical properties of silicone/pristine CaAlSiN3:Eu2+ and silicone/hydrolyzed CaAlSiN3:Eu2+ composites are experimentally measured and compared firstly, in which both the tensile strength and Young's modulus of composite are increased after the hydrolysis reaction. Then, the first principles Density Functional Theory (DFT) calculations are used to investigate the adhesion behaviors of the silicone molecular on both the pristine and the hydrolyzed CaAlSiN3[0 1 0] at atomic level. The results show that: (1) The silicone molecular is weakly adsorbed on the pristine CaAlSiN3[0 1 0] via Van der Waals (vdW) interactions, while silicone molecular is much stronger absorbed on the hydrolyzed CaAlSiN3[0 1 0] due to the formation of hydrogen bonding at the interface; (2) The transient state calculations indicate that the sliding energy barrier of silicone on the hydrolyzed CaAlSiN3[0 1 0] is higher than that on the pristine one, as the increased adsorption energy and surface roughness. Generally, the findings in this paper can guide the phosphor selection, storage and process in LED packaging, and also assist in improving the reliability design of LED package used in high moisture Condition.Electronic Components, Technology and Material

Fan J. - One of the best experts on this subject based on the ideXlab platform.

  • The interface adhesion of CaAlSiN3: Eu2+ phosphor/silicone used in light-emitting diode packaging: A first principles study
    'Elsevier BV', 2020
    Co-Authors: Cui Z., Fan J., Van Ginkel H.j., Fan Xuejun, Zhang Kouchi
    Abstract:

    The CaAlSiN3:Eu2+ red phosphor and its silicone/phosphor composite are very promising materials used in the high color rendering white light-emitting diode (LED) packaging. However, the reliabilities of CaAlSiN3:Eu2+ and its composite are still being challenged by phosphor hydrolysis at high humidity Application Condition. A fundamental understanding of the interface adhesion between silicone and CaAlSiN3:Eu2+ is significant for the developments and Applications of this material. In this work, the mechanical properties of silicone/pristine CaAlSiN3:Eu2+ and silicone/hydrolyzed CaAlSiN3:Eu2+ composites are experimentally measured and compared firstly, in which both the tensile strength and Young's modulus of composite are increased after the hydrolysis reaction. Then, the first principles Density Functional Theory (DFT) calculations are used to investigate the adhesion behaviors of the silicone molecular on both the pristine and the hydrolyzed CaAlSiN3[0 1 0] at atomic level. The results show that: (1) The silicone molecular is weakly adsorbed on the pristine CaAlSiN3[0 1 0] via Van der Waals (vdW) interactions, while silicone molecular is much stronger absorbed on the hydrolyzed CaAlSiN3[0 1 0] due to the formation of hydrogen bonding at the interface; (2) The transient state calculations indicate that the sliding energy barrier of silicone on the hydrolyzed CaAlSiN3[0 1 0] is higher than that on the pristine one, as the increased adsorption energy and surface roughness. Generally, the findings in this paper can guide the phosphor selection, storage and process in LED packaging, and also assist in improving the reliability design of LED package used in high moisture Condition.

  • The interface adhesion of CaAlSiN3: Eu2+ phosphor/silicone used in light-emitting diode packaging: A first principles study
    'Elsevier BV', 2020
    Co-Authors: Cui Z., Fan J., Van Ginkel H.j., Fan Xuejun, Zhang Kouchi
    Abstract:

    The CaAlSiN3:Eu2+ red phosphor and its silicone/phosphor composite are very promising materials used in the high color rendering white light-emitting diode (LED) packaging. However, the reliabilities of CaAlSiN3:Eu2+ and its composite are still being challenged by phosphor hydrolysis at high humidity Application Condition. A fundamental understanding of the interface adhesion between silicone and CaAlSiN3:Eu2+ is significant for the developments and Applications of this material. In this work, the mechanical properties of silicone/pristine CaAlSiN3:Eu2+ and silicone/hydrolyzed CaAlSiN3:Eu2+ composites are experimentally measured and compared firstly, in which both the tensile strength and Young's modulus of composite are increased after the hydrolysis reaction. Then, the first principles Density Functional Theory (DFT) calculations are used to investigate the adhesion behaviors of the silicone molecular on both the pristine and the hydrolyzed CaAlSiN3[0 1 0] at atomic level. The results show that: (1) The silicone molecular is weakly adsorbed on the pristine CaAlSiN3[0 1 0] via Van der Waals (vdW) interactions, while silicone molecular is much stronger absorbed on the hydrolyzed CaAlSiN3[0 1 0] due to the formation of hydrogen bonding at the interface; (2) The transient state calculations indicate that the sliding energy barrier of silicone on the hydrolyzed CaAlSiN3[0 1 0] is higher than that on the pristine one, as the increased adsorption energy and surface roughness. Generally, the findings in this paper can guide the phosphor selection, storage and process in LED packaging, and also assist in improving the reliability design of LED package used in high moisture Condition.Electronic Components, Technology and Material