Construction Of Gaas Condenser System And Utilization Analysis Of Solar Cell Temperature Waste Heat

In the process of electricity generation with solar photovoltaic, efficiency of electricity generation will decrease as the battery temperature rise. It will receive heat and reduce the battery temperature if the battery is cooled by liquid, which can effectively improve the efficiency of electricity generation. The way that using organic Rankine cycle for waste heat generating is better than that of several other forms of electricity generation. Therefore proposing a solution that modifying the GaAs concentrator system, and taking away the heat produced in the process of electricity generation by using refrigerants, then the heat is used for electricity generation by means of organic Rankine cycle, which improve the utilization of solar energy. In this paper the GaAs concentrator system is studied by the way of making experiment and simulation. Analyze how the working medium inlet flow and inlet temperature will affect the performance of the system. The specific work is as follows:(1)The construction of GaAs concentrator system; including the choice of the working medium; the concentrator system analysis and the choice of the condenser ways; the analysis of the cooling system and the choice of the cooling ways; the design and manufacture of solar tracking system. For the solar tracking, eight photosensitive resistances are used to collect light signal, it then was transmitted to the motor control module in which it’s used to control motor operation and realize the real-time tracking of the sun.(2) Analysis of the waste heat utilization of battery temperature for GaAs concentrator system. Establish a transfer model of GaAs concentrator system, and the simulation studies is carried out to analysis the effect of operation condition on the heat and electricity efficiency of system, as well as the distribution of physical properties of the working fluid along the cooling pipes. The results showed that the two-phase region, the dryness of working medium and the velocity and enthalpy linear growth along the cooling pipes; The thermal efficiency and electric efficiency of the system increase with the increasing of the working medium inlet flow, and decrease with the increasing of working medium inlet temperature. The thermal efficiency and electric efficiency of system are 44.57% and 23.12%, respectively, when working medium inlet temperature is 24.3℃ and the mass flow rate is 0.012 kg/s.(3)Experimental research of the waste heat utilization of battery temperature for GaAs condenser system, including dismantling module, the layout of Cooling piping, the design and produce of track stent. And the temperature and pressure of working fluid in the import and export, the water temperature of condenser, the voltage and current of two ends of the resistor are measured. Calculating the thermal efficiency and electrical efficiency of the system; Analysis of the influence of operating conditions on the system performance. The results show that the thermal efficiency and electrical efficiency of the system increase with the increasing of working medium inlet flow.