The Experts below are selected from a list of 24006 Experts worldwide ranked by ideXlab platform

Xudong Zhao - One of the best experts on this subject based on the ideXlab platform.

  • Applications of Solar Water Heating system with phase change material
    Renewable and Sustainable Energy Reviews, 2015
    Co-Authors: Zhangyuan Wang, Wansheng Yang, Feng Qiu, Xudong Zhao
    Abstract:

    The aim of the paper is to provide the review towards the Solar Water Heating system with phase change material. Research questions relating to the Solar Water Heating system using phase change material were analyzed in two sides, i.e., structural characterization and research methodology, followed with the brief introduction of phase change material. The opportunities for further works were identified in technical and economical aspects. The technical opportunities involved in improving characteristics of phase change material for application in Solar Water Heating system, developing novel Solar Water Heating system for integration of system components with phase change material, performing long-term, real-weather and in-situ testing for optimizing operational and structural parameters of novel system, and proposing standardization of novel system for design, manufacture, utilization and marketing. The economical opportunities were presented as in conducting economical analysis to propose cost-effective system and evaluate the feasibility in different locations of the world, and providing subsidies to promote cost-effective system. This study will help identify the potential research gaps for the improvement of the energy efficiency of the Solar Water Heating system and reduce the conventional fossil fuel consumption and carbon emission in the world. This research will also provide the guidance for the domestic and global researchers and engineers working on this area.

  • Solar Water Heating from theory application marketing and research
    Renewable & Sustainable Energy Reviews, 2015
    Co-Authors: Zhangyuan Wang, Wansheng Yang, Xudong Zhao, Xiangmei Zhang
    Abstract:

    The aim of the paper is to provide a comprehensive critical review towards the Solar Water Heating (SWH) technology in terms of its theory, application, market potential and research questions. The theoretical issues relating to the Solar Water Heating technology were illustrated in terms of the working principle, classification and associated mathematical expressions. The existing SWH production and engineering application were introduced and its future market potential was also predicted. Furthermore, research questions relating to the SWH were analysed involving (1) whole structure and individual components layout, sizing and optimisation; (2) thermal performance simulation and prediction; (3) laboratory based measurement compared against the modelling prediction; (4) dynamic performance evaluation through real time and on-site measurement; (5) energy saving, economic and environmental performance assessment, and social acceptance analyses; and (6) dissemination, marketing and exploitation strategies. Finally, the opportunities for the further works on the SWH were identified. This study will help understand the current status of the economic and technical developments, identify the barriers remaining to the existing Solar Water Heating systems, develop the potential research areas to improve the performance of the systems, establish the associated strategic plans related to the design and installation of the system and promote the Solar thermal global market. The study will contribute to achieving the China and international targets for energy saving, renewable energy utilisation, as well as carbon emission reduction in building sector.

Zhangyuan Wang - One of the best experts on this subject based on the ideXlab platform.

  • Applications of Solar Water Heating system with phase change material
    Renewable and Sustainable Energy Reviews, 2015
    Co-Authors: Zhangyuan Wang, Wansheng Yang, Feng Qiu, Xudong Zhao
    Abstract:

    The aim of the paper is to provide the review towards the Solar Water Heating system with phase change material. Research questions relating to the Solar Water Heating system using phase change material were analyzed in two sides, i.e., structural characterization and research methodology, followed with the brief introduction of phase change material. The opportunities for further works were identified in technical and economical aspects. The technical opportunities involved in improving characteristics of phase change material for application in Solar Water Heating system, developing novel Solar Water Heating system for integration of system components with phase change material, performing long-term, real-weather and in-situ testing for optimizing operational and structural parameters of novel system, and proposing standardization of novel system for design, manufacture, utilization and marketing. The economical opportunities were presented as in conducting economical analysis to propose cost-effective system and evaluate the feasibility in different locations of the world, and providing subsidies to promote cost-effective system. This study will help identify the potential research gaps for the improvement of the energy efficiency of the Solar Water Heating system and reduce the conventional fossil fuel consumption and carbon emission in the world. This research will also provide the guidance for the domestic and global researchers and engineers working on this area.

  • Solar Water Heating from theory application marketing and research
    Renewable & Sustainable Energy Reviews, 2015
    Co-Authors: Zhangyuan Wang, Wansheng Yang, Xudong Zhao, Xiangmei Zhang
    Abstract:

    The aim of the paper is to provide a comprehensive critical review towards the Solar Water Heating (SWH) technology in terms of its theory, application, market potential and research questions. The theoretical issues relating to the Solar Water Heating technology were illustrated in terms of the working principle, classification and associated mathematical expressions. The existing SWH production and engineering application were introduced and its future market potential was also predicted. Furthermore, research questions relating to the SWH were analysed involving (1) whole structure and individual components layout, sizing and optimisation; (2) thermal performance simulation and prediction; (3) laboratory based measurement compared against the modelling prediction; (4) dynamic performance evaluation through real time and on-site measurement; (5) energy saving, economic and environmental performance assessment, and social acceptance analyses; and (6) dissemination, marketing and exploitation strategies. Finally, the opportunities for the further works on the SWH were identified. This study will help understand the current status of the economic and technical developments, identify the barriers remaining to the existing Solar Water Heating systems, develop the potential research areas to improve the performance of the systems, establish the associated strategic plans related to the design and installation of the system and promote the Solar thermal global market. The study will contribute to achieving the China and international targets for energy saving, renewable energy utilisation, as well as carbon emission reduction in building sector.

Xiaoling Cao - One of the best experts on this subject based on the ideXlab platform.

  • Experimental Investigation on Performance Comparison of Solar Water Heating-Phase Change Material System and Solar Water Heating System
    Energies, 2019
    Co-Authors: Liangliang Sun, Nan Xiang, Yanping Yuan, Xiaoling Cao
    Abstract:

    Phase change material can be used as heat transfer fluid in the Solar Water Heating system, which is the latest way to improve thermal efficiency. In this paper, graphene composite paraffin emulsion is used as heat transfer fluid in a Solar Water Heating-phase change material (SWH-PCM) system. By comparing with the traditional Solar Water Heating (SWH) system, the thermal performance characteristics of SWH-PCM system have been investigated experimentally. The SWH-PCM system has higher heat storage than the SWH system. The heat storage of SWH-PCM system and SWH system all increase with the increase of Solar irradiance, while the thermal efficiency has the opposite trend. The flow rate has a greater influence on the thermal efficiency of SWH-PCM system than that of the SWH system. With the flow rate of 200 L/h, the thermal efficiency of SWH-PCM system is 14.21% higher than that of the SWH system. In summary, the SWH-PCM system is a promising Solar Water Heating system with high heat storage and thermal efficiency.

T. Balusamy - One of the best experts on this subject based on the ideXlab platform.

  • performance improvement in Solar Water Heating systems a review
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: S. Sadhishkumar, T. Balusamy
    Abstract:

    Abstract Solar energy is free, environmentally clean, and therefore it is accepted as one of the most promising alternative energy sources. The effective use of Solar energy is hindered by the intermittent nature of its availability, limiting its use and effectiveness in domestic and industrial applications especially in Water Heating. Conversion of Solar energy into thermal energy is the easiest and most used method. The efficiency of Solar thermal conversion is around 70% but Solar electrical direct conversion system has an efficiency of only 17%. Solar Water Heating systems are mostly suited for its ease of operation and simple maintenance. Many research papers revealed that the improvement on thermal efficiency of Solar Water Heating systems resulted in techniques to improve the convection heat transfer. Solar Water Heating systems are classified into two broad categories as passive and active systems. Passive techniques have been used to improve the convective heat transfer. The techniques like insertion of twisted tapes and its geometry, etc., play a vital role to improve the performance of Solar Water Heating systems. This review paper summarizes the previous works on Solar Water Heating systems with various heat transfer enhancement techniques include collector design, collector tilt angle, coating of pipes, fluid flow rate, thermal insulation, integrated collector storage, thermal energy storage, use of phase change materials, and insertion of twisted tapes. This paper also discussed the methods to optimize and simulate the Solar Water Heating systems to understand flow and thermal behavior in Solar collectors that would lead to the improvement of the thermal performance of Solar collectors.

  • Performance improvement in Solar Water Heating systems—A review
    Renewable and Sustainable Energy Reviews, 2014
    Co-Authors: S. Sadhishkumar, T. Balusamy
    Abstract:

    Abstract Solar energy is free, environmentally clean, and therefore it is accepted as one of the most promising alternative energy sources. The effective use of Solar energy is hindered by the intermittent nature of its availability, limiting its use and effectiveness in domestic and industrial applications especially in Water Heating. Conversion of Solar energy into thermal energy is the easiest and most used method. The efficiency of Solar thermal conversion is around 70% but Solar electrical direct conversion system has an efficiency of only 17%. Solar Water Heating systems are mostly suited for its ease of operation and simple maintenance. Many research papers revealed that the improvement on thermal efficiency of Solar Water Heating systems resulted in techniques to improve the convection heat transfer. Solar Water Heating systems are classified into two broad categories as passive and active systems. Passive techniques have been used to improve the convective heat transfer. The techniques like insertion of twisted tapes and its geometry, etc., play a vital role to improve the performance of Solar Water Heating systems. This review paper summarizes the previous works on Solar Water Heating systems with various heat transfer enhancement techniques include collector design, collector tilt angle, coating of pipes, fluid flow rate, thermal insulation, integrated collector storage, thermal energy storage, use of phase change materials, and insertion of twisted tapes. This paper also discussed the methods to optimize and simulate the Solar Water Heating systems to understand flow and thermal behavior in Solar collectors that would lead to the improvement of the thermal performance of Solar collectors.

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

  • Applications of Solar Water Heating system with phase change material
    Renewable and Sustainable Energy Reviews, 2015
    Co-Authors: Zhangyuan Wang, Wansheng Yang, Feng Qiu, Xudong Zhao
    Abstract:

    The aim of the paper is to provide the review towards the Solar Water Heating system with phase change material. Research questions relating to the Solar Water Heating system using phase change material were analyzed in two sides, i.e., structural characterization and research methodology, followed with the brief introduction of phase change material. The opportunities for further works were identified in technical and economical aspects. The technical opportunities involved in improving characteristics of phase change material for application in Solar Water Heating system, developing novel Solar Water Heating system for integration of system components with phase change material, performing long-term, real-weather and in-situ testing for optimizing operational and structural parameters of novel system, and proposing standardization of novel system for design, manufacture, utilization and marketing. The economical opportunities were presented as in conducting economical analysis to propose cost-effective system and evaluate the feasibility in different locations of the world, and providing subsidies to promote cost-effective system. This study will help identify the potential research gaps for the improvement of the energy efficiency of the Solar Water Heating system and reduce the conventional fossil fuel consumption and carbon emission in the world. This research will also provide the guidance for the domestic and global researchers and engineers working on this area.

  • Solar Water Heating from theory application marketing and research
    Renewable & Sustainable Energy Reviews, 2015
    Co-Authors: Zhangyuan Wang, Wansheng Yang, Xudong Zhao, Xiangmei Zhang
    Abstract:

    The aim of the paper is to provide a comprehensive critical review towards the Solar Water Heating (SWH) technology in terms of its theory, application, market potential and research questions. The theoretical issues relating to the Solar Water Heating technology were illustrated in terms of the working principle, classification and associated mathematical expressions. The existing SWH production and engineering application were introduced and its future market potential was also predicted. Furthermore, research questions relating to the SWH were analysed involving (1) whole structure and individual components layout, sizing and optimisation; (2) thermal performance simulation and prediction; (3) laboratory based measurement compared against the modelling prediction; (4) dynamic performance evaluation through real time and on-site measurement; (5) energy saving, economic and environmental performance assessment, and social acceptance analyses; and (6) dissemination, marketing and exploitation strategies. Finally, the opportunities for the further works on the SWH were identified. This study will help understand the current status of the economic and technical developments, identify the barriers remaining to the existing Solar Water Heating systems, develop the potential research areas to improve the performance of the systems, establish the associated strategic plans related to the design and installation of the system and promote the Solar thermal global market. The study will contribute to achieving the China and international targets for energy saving, renewable energy utilisation, as well as carbon emission reduction in building sector.