Numerical simulation of geothermal energy from dry hot rocks with gravity heat pipe

Abstract Dry-hot rock is a kind of new geothermal energy with abundant storage. At present, the extraction dry-hot mainly through artificial fracturing mass by injecting water as working fluid. The heat extracted heat-carrying medium.This paper combines super-long gravity pipe rock, and buries carbon dioxide in Then, feasibility extracting from 2500m studied numerical simulation.The storage equivalent to porous continuous medium model. temperature field distribution, pressure distribution velocity were simulated Fluent software analyze evaporation condensation process liquid refrigerants pipes at different times.Through simulation, it concluded that vapor 80°C can be obtained outlet overlength pipe, flow rate about 2m/s. scheme feasible.