Numerical Simulation on Heat Transfer from Envelope of the Underground Engineering

Whether the results of the dynamic heat flux from the underground engineering envelope are accurate, may influence the accuracy of calculating the transient heat load and could affect the initial cost and actual operation of the air conditioning system in the underground engineering. Based on the mathematical modeling of heat transfer in the underground engineering envelope, the influence of the model dimension, boundary condition on the soil surface, initial temperature of the soil, the adiabatic distances far from the envelope and the heat transfer coefficient between the envelope surface and the indoor air, the heat transfer mechanism of the underground engineering envelope was studied in terms of the building structure, style of the envelopes and the difference of the locations. For providing the analysis basis to simplified calculation of heat transfer in the underground engineering envelope.