In order to realize commercial application of solar power generation by using direct steam technology in the solar thermal power plant

it is necessary to develop an efficient and cost-effective high-temperature latent-heat thermal energy storaging(HTLHTES) system to form a complete set with it.For this

a new structure of the HTLHTES system has been put forward by using aluminium foils for strengthening its heat transfer performance

and the transient two-dimensional heat transfer process during the heat discharging period being simulated by using the Fluent software

obtaining the relationship of phase interface position

temperature distribution

liquid-phase ratio

and surface heat flux varying along with the time

as well as the total time of solidification;the parameters affecting the performance of the new HTLHTES system

such as the geometric size

the boundary condition

and heat conductivity etc.

have been studied

obtaining correlation fomulae of these parameters with the total time of solidification.Results of calculation show that the installation of aluminium foils can effectively strengthen the heat transfer performance of the said HTLHTES system.Adopting the correlation formulae presented

the performance optimization design of the new type HTLHTES system can be carried out.