The Experts below are selected from a list of 51189 Experts worldwide ranked by ideXlab platform

Gui Yin Fang - One of the best experts on this subject based on the ideXlab platform.

  • experimental investigation on the photovoltaic thermal solar heat pump air Conditioning System on water heating mode
    Experimental Thermal and Fluid Science, 2010
    Co-Authors: Gui Yin Fang, Hainan Hu
    Abstract:

    Abstract An experimental study on operation performance of photovoltaic–thermal solar heat pump air-Conditioning System was conducted in this paper. The experimental System of photovoltaic–thermal solar heat pump air-Conditioning System was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-Conditioning System, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic–thermal (PV/T) solar heat pump air-Conditioning System reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-Conditioning System may attain 2.88 and the water temperature in water heater can increase to 42 °C. These results indicate that the photovoltaic–thermal solar heat pump air-Conditioning System has better performances and can stably work.

  • Experimental investigation on the photovoltaic–thermal solar heat pump air-Conditioning System on water-heating mode
    Experimental Thermal and Fluid Science, 2010
    Co-Authors: Gui Yin Fang, Hainan Hu, Xu Liu
    Abstract:

    An experimental study on operation performance of photovoltaic–thermal solar heat pump air-Conditioning System was conducted in this paper. The experimental System of photovoltaic–thermal solar heat pump air-Conditioning System was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-Conditioning System, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic–thermal (PV/T) solar heat pump air-Conditioning System reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-Conditioning System may attain 2.88 and the water temperature in water heater can increase to 42°C. These results indicate that the photovoltaic–thermal solar heat pump air-Conditioning System has better performances and can stably work.

  • Exergy analysis of ice storage air-Conditioning System with heat pipe during charging period
    Energy for Sustainable Development, 2010
    Co-Authors: Gui Yin Fang, Xu Liu
    Abstract:

    The ice storage air-Conditioning System with heat pipe was presented, and analytical model relating to the exergy loss amount and loss rate was developed in each component of the ice storage air-Conditioning System. Exergy analysis results of the ice storage air-Conditioning System with heat pipe were compared with those of the ice storage air-Conditioning System with ice-on-coil. The energy saving and exergy loss reduction possibilities were also analyzed and discussed. The results indicated that the exergy efficiency of the ice storage air-Conditioning System with heat pipe is 9.55% higher than that of the ice storage air-Conditioning System with ice-on-coil. The exergy loss in the condenser can be reduced by reducing thermal resistance and the temperature difference of heat transfer or utilizing exergy of heat rejected by the condenser. The exergy loss in the expansion valve is reduced through increasing supercooling temperature of the refrigerant before entering into the expansion valve or decreasing pressure difference between the condensing pressure and the evaporating pressure. ?? 2010 Elsevier Ltd.

  • Experimental investigation on performance of ice storage air-Conditioning System with separate heat pipe
    Experimental Thermal and Fluid Science, 2009
    Co-Authors: Gui Yin Fang, Xu Liu, Shuangmao Wu
    Abstract:

    An experimental study on operation performance of ice storage air-Conditioning System with separate helical heat pipe is conducted in this paper. The experimental System of ice storage air-Conditioning System with separate heat pipe is set up. The performance parameters such as the evaporation pressure and the condensation pressure of refrigeration System, the refrigeration capacity and the COP (coefficient of performance) of the System, the IPF (ice packing factor) and the cool storage capacity in the cool storage tank during charging period, and the cool discharge rate and the cool discharge capacity in the cool storage tank, the outlet water temperature in the cool storage tank and the outlet air temperature in room unit during discharging period are investigated. The experimental results show that the ice storage air-Conditioning System with separate helical heat pipe can stably work during charging and discharging period. This indicates that the ice storage air-Conditioning System with separate helical heat pipe is well adapted to cool storage air-Conditioning Systems in building. ?? 2009 Elsevier Inc. All rights reserved.

Hainan Hu - One of the best experts on this subject based on the ideXlab platform.

  • experimental investigation on the photovoltaic thermal solar heat pump air Conditioning System on water heating mode
    Experimental Thermal and Fluid Science, 2010
    Co-Authors: Gui Yin Fang, Hainan Hu
    Abstract:

    Abstract An experimental study on operation performance of photovoltaic–thermal solar heat pump air-Conditioning System was conducted in this paper. The experimental System of photovoltaic–thermal solar heat pump air-Conditioning System was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-Conditioning System, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic–thermal (PV/T) solar heat pump air-Conditioning System reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-Conditioning System may attain 2.88 and the water temperature in water heater can increase to 42 °C. These results indicate that the photovoltaic–thermal solar heat pump air-Conditioning System has better performances and can stably work.

  • Experimental investigation on the photovoltaic–thermal solar heat pump air-Conditioning System on water-heating mode
    Experimental Thermal and Fluid Science, 2010
    Co-Authors: Gui Yin Fang, Hainan Hu, Xu Liu
    Abstract:

    An experimental study on operation performance of photovoltaic–thermal solar heat pump air-Conditioning System was conducted in this paper. The experimental System of photovoltaic–thermal solar heat pump air-Conditioning System was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-Conditioning System, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic–thermal (PV/T) solar heat pump air-Conditioning System reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-Conditioning System may attain 2.88 and the water temperature in water heater can increase to 42°C. These results indicate that the photovoltaic–thermal solar heat pump air-Conditioning System has better performances and can stably work.

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

  • The Energy Consumption Investigation of the Hotel Central Air-Conditioning System and the Research of Energy Saving Measures
    Advances in Manufacturing Science and Engineering, Pts 1-4, 2013
    Co-Authors: J.-j. Ni, L. Tao, Xu Liu, Jianghong Wu, K. Zhang, Yong Wang, Min Li
    Abstract:

    Through to investigation on present situation of the Changzhou Changrui Hotel air Conditioning System energy consumption, by analysis the energy consumption, the power consumption of hotel central air-Conditioning System charge 58% of the total electric, accounted for a large proportion. So we should take the necessary measures to reduce the expenses of air Conditioning System energy consumption. According to the analysis of data on the survey, we put forward some particular energy-saving measures of central air-Conditioning System of the hotel, including strengthening the building envelope insulation, energy saving technology of doors and windows, measures of roof energy saving, setting reasonable indoor temperature, adopting frequency control air-Conditioning, reuse waste heat of the central air-Conditioning, using the condensation water of central air Conditioning to make-up water and reducing temperature of cooling tower, and drying the fresh air independently.

  • Experimental investigation on the photovoltaic–thermal solar heat pump air-Conditioning System on water-heating mode
    Experimental Thermal and Fluid Science, 2010
    Co-Authors: Gui Yin Fang, Hainan Hu, Xu Liu
    Abstract:

    An experimental study on operation performance of photovoltaic–thermal solar heat pump air-Conditioning System was conducted in this paper. The experimental System of photovoltaic–thermal solar heat pump air-Conditioning System was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-Conditioning System, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic–thermal (PV/T) solar heat pump air-Conditioning System reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-Conditioning System may attain 2.88 and the water temperature in water heater can increase to 42°C. These results indicate that the photovoltaic–thermal solar heat pump air-Conditioning System has better performances and can stably work.

  • Exergy analysis of ice storage air-Conditioning System with heat pipe during charging period
    Energy for Sustainable Development, 2010
    Co-Authors: Gui Yin Fang, Xu Liu
    Abstract:

    The ice storage air-Conditioning System with heat pipe was presented, and analytical model relating to the exergy loss amount and loss rate was developed in each component of the ice storage air-Conditioning System. Exergy analysis results of the ice storage air-Conditioning System with heat pipe were compared with those of the ice storage air-Conditioning System with ice-on-coil. The energy saving and exergy loss reduction possibilities were also analyzed and discussed. The results indicated that the exergy efficiency of the ice storage air-Conditioning System with heat pipe is 9.55% higher than that of the ice storage air-Conditioning System with ice-on-coil. The exergy loss in the condenser can be reduced by reducing thermal resistance and the temperature difference of heat transfer or utilizing exergy of heat rejected by the condenser. The exergy loss in the expansion valve is reduced through increasing supercooling temperature of the refrigerant before entering into the expansion valve or decreasing pressure difference between the condensing pressure and the evaporating pressure. ?? 2010 Elsevier Ltd.

  • Experimental investigation on performance of ice storage air-Conditioning System with separate heat pipe
    Experimental Thermal and Fluid Science, 2009
    Co-Authors: Gui Yin Fang, Xu Liu, Shuangmao Wu
    Abstract:

    An experimental study on operation performance of ice storage air-Conditioning System with separate helical heat pipe is conducted in this paper. The experimental System of ice storage air-Conditioning System with separate heat pipe is set up. The performance parameters such as the evaporation pressure and the condensation pressure of refrigeration System, the refrigeration capacity and the COP (coefficient of performance) of the System, the IPF (ice packing factor) and the cool storage capacity in the cool storage tank during charging period, and the cool discharge rate and the cool discharge capacity in the cool storage tank, the outlet water temperature in the cool storage tank and the outlet air temperature in room unit during discharging period are investigated. The experimental results show that the ice storage air-Conditioning System with separate helical heat pipe can stably work during charging and discharging period. This indicates that the ice storage air-Conditioning System with separate helical heat pipe is well adapted to cool storage air-Conditioning Systems in building. ?? 2009 Elsevier Inc. All rights reserved.

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

  • A review on phase change cold storage in air-Conditioning System: Materials and applications
    Renewable and Sustainable Energy Reviews, 2013
    Co-Authors: X Q Zhai, X. L. Wang, T. Wang, R Z Wang
    Abstract:

    This paper reviews the previous work on phase change cold storage for air-Conditioning Systems focusing on two aspects including phase change materials (PCMs) and applications. Besides the studies on phase change cold storage devices, the typical air-Conditioning Systems with cold storage are also reviewed, namely the solar air-Conditioning System with cold storage, latent cooling storage and transport System and mixed cold storage air-Conditioning System. Moreover, the problems with respect to compatibility, heat transfer enhancement, phase change properties of composite PCMs, etc., are discussed for further investigation. ?? 2013 Elsevier Ltd.

  • design and performance of a solar powered air Conditioning System in a green building
    Applied Energy, 2008
    Co-Authors: X Q Zhai, R Z Wang, J Y Wu
    Abstract:

    A solar-powered adsorption air-Conditioning System was designed and installed in the green building of Shanghai Research Institute of Building Science. The System contained 150Â m2 solar collectors and two adsorption chillers with nominal refrigeration capacity of 8.5Â kW. Based on performance characteristics of the adsorption chiller, the operation mode of the solar-powered air-Conditioning System was optimized by maintaining a phase shift of 540Â s between the two adsorption chillers. Thereafter, the whole System realized stable operation by the balance of heat consumption and refrigeration output. From June to August of 2005, the solar-powered air-Conditioning System continuously ran between 9:00 and 17:00. The operation performance of the System under representative working condition showed that the average refrigeration output of the solar-powered air-Conditioning System was 15.3Â kW during an 8Â h operation and the maximum value exceeded 20Â kW. Solar fraction for the System in summer was 71.7%, which corresponded to the designed cooling load (15Â kW). Compared with the ambient temperature, it was deduced that solar radiant intensity had a more distinct influence on the performance of solar-powered air-Conditioning System.

X Q Zhai - One of the best experts on this subject based on the ideXlab platform.

  • A review on phase change cold storage in air-Conditioning System: Materials and applications
    Renewable and Sustainable Energy Reviews, 2013
    Co-Authors: X Q Zhai, X. L. Wang, T. Wang, R Z Wang
    Abstract:

    This paper reviews the previous work on phase change cold storage for air-Conditioning Systems focusing on two aspects including phase change materials (PCMs) and applications. Besides the studies on phase change cold storage devices, the typical air-Conditioning Systems with cold storage are also reviewed, namely the solar air-Conditioning System with cold storage, latent cooling storage and transport System and mixed cold storage air-Conditioning System. Moreover, the problems with respect to compatibility, heat transfer enhancement, phase change properties of composite PCMs, etc., are discussed for further investigation. ?? 2013 Elsevier Ltd.

  • design and performance of a solar powered air Conditioning System in a green building
    Applied Energy, 2008
    Co-Authors: X Q Zhai, R Z Wang, J Y Wu
    Abstract:

    A solar-powered adsorption air-Conditioning System was designed and installed in the green building of Shanghai Research Institute of Building Science. The System contained 150Â m2 solar collectors and two adsorption chillers with nominal refrigeration capacity of 8.5Â kW. Based on performance characteristics of the adsorption chiller, the operation mode of the solar-powered air-Conditioning System was optimized by maintaining a phase shift of 540Â s between the two adsorption chillers. Thereafter, the whole System realized stable operation by the balance of heat consumption and refrigeration output. From June to August of 2005, the solar-powered air-Conditioning System continuously ran between 9:00 and 17:00. The operation performance of the System under representative working condition showed that the average refrigeration output of the solar-powered air-Conditioning System was 15.3Â kW during an 8Â h operation and the maximum value exceeded 20Â kW. Solar fraction for the System in summer was 71.7%, which corresponded to the designed cooling load (15Â kW). Compared with the ambient temperature, it was deduced that solar radiant intensity had a more distinct influence on the performance of solar-powered air-Conditioning System.