Modeling and Simulation of Phase Change Materials: Application to Building with Low Energy Consumption

Abstract

The use of phase change materials must allow storage / destocking of energy from solar or internal gains. The applications in the case of light constructions will lead to an improvement in the thermal comfort of users and a reduction in energy consumption. The use of phase change materials (PCMs) in the energy-saving walls themselves makes it possible to substitute sensible heat storage for latent heat storage which requires a much lower volume and mass for the same amount of thermal energy. The objective of this work is the study of heat transfer by conduction during a phase change, and aims on the one hand to model and simulate the phase change behavior and on the other hand to approach the mechanism of heat exchange at the solid-liquid interface. The results obtained in 2D show the temporal evolution of the temperature, the position and the speed of the solid-liquid interface.

Recognition and Simulation of Exercise Mode Based on Energy Consumption Model

“…Energy consumption in human sports is a true reflection of various sports activities, and objective, accurate, and highly repeatable energy consumption measurement method is the key to study various sports [5,6]. Accurate measurement of energy consumption, especially of physical activity, and understanding of college students' physical activity level are of great significance to guide college students' scientific exercise and formulate the recommended standard of sports load with a definite object in mind.…”