Research On Heat Transfer Of Heat Sink In The TPV System

Thermal radiation can be converted into electricity though photovoltaic cells, by using the Thermo-photovoltaic (TPV) technologies. The normal system mainly contains the heat resource (combustion-system), emitters, filters, photovoltaic cells, recuperators. The potential market for TPV system is very large because of it's wide range of heat source and high conversion efficiency of heat-electricity. As the key part of the system, the bad thermal perfromance of the PV cells is a serious factor which embarrass the development of the system.In order to keep the PV cells working well and steadily under the condition with the given states, and to improve the performance of the system, the heat sink in one real TPV system is simulated, from the view of the whole structure and the working effect of the energy transfer. After the principle of the designing is introduced, the basic model of the heat sink is set up. Using the Fluent software, the influence of heat removing from some part of the heat sink is analyzed. The different precision between the results of the real-fan model and the fan-model in the Fluent is discussed. In order to get the best optional design, five different fin profiles of the radiation-shape heat sink with the same boundary is researched. According to the field synergy principle, the thermal performance is compared while changing these factors. Considering the basic thermal theory and the method of numerical compute, the TPV model with the best shape heat sink is set up. The composes such as combustion, recuperators and the heat sink is simulated with the software of Fluent, while the way of energy transfer between the emitter, filter, and the PV cell is analyzed with the Fortran software. Due to the results of the simulation, the feasibility of the heat sink and the reasonable of the TPV system is proved, which was designed in the foregoing analysis.