Comparative study on parameter systems of building envelope thermal storage performance

Aiming at the problem of thermal storage performance parameter system selection for the design and performance evaluation of building envelope thermal storage, compares two thermal storage parameter systems of harmonic analysis method and conduction transfer function method based on unsteady heat transfer. Deeply discusses the similarities and differences of physical meanings and calculation methods between coefficient of heat accumulation and thermal permeability, thermal inertia index and ratio of thickness to penetration depth, violent fluctuating layer thickness and periodic penetration depth, heat absorption coefficient and thermal admittance. Presents the key parameters of thermal storage performance for outdoor and indoor heat source periodic thermal effects, respectively. Taking a composite insulation wall as an example, calculates the thermal storage performance parameters based on harmonic analysis method and conduction transfer function method respectively.