Study and simulation of heat storage tank of solar heating system with seasonal heat storage

Establishes a mathematical model of solar heating system with seasonal heat storage, and analyses the energy balance relationship of this system. Takes water as heat storage medium, installs an underground tank with seasonal heat storage, and simulates and calculates the performance of the heat storage tank. Analyses the relationships between thickness of external thermal insulation layer and heat release, thickness of external thermal insulation layer and heat dissipation rate, tank capacity and heat loss, tank capacity and heat dissipation rate. Obtains the parameters of the heat storage tank with low heat dissipation rate and acceptable cost. The thermal insulation thickness is 200 mm to 300 mm, and the water tank capacity is 500 m3 to 2 000 m3.