Heat storage experiment and numerical simulation of heat exchange tube in heat receiver

Heat storage experiment of heat exchange tube is an important step to research the Solar Dynamic Power System. The molten salt LiF-CaF₂ is selected as thermal storage material in heft exchange tube. The total time of the experiments was 2511 minutes. The experiments consist of different balanced-orbit and transition modes. The canisters surface temperatures and gas outer temperature were measured. The enthalpy method was used to calculate the phase change process and the thermal model of heat exchange tube experiment was established. The temperatures of outer surfaces of heat exchange tube, the gas exit temperature and liquid PCM fraction in experiment parameters were calculated. The numerical calculations were agreements with the experiment results.