THE VOLATILITY AND THE THERMAL STORAGE PERFORMANCE OF MONOBASIC, BINARY AND TRIATOMIC POLYALCOHOLS SYSTEMS

摘要

In this paper, the volatility of monobasic, binary and triatomic systems consisting of neopentylglycolfNPG), pentaerythritol(PE) and trihytdroxy methyl-aminomethane(TAM) were studied experimentally. In the solid-solid phase change process, the weightless rates of polyalcohols are lower and less than 5 percent, and the weightless rates of polyalcohols are zero after polyalcohols are sealed. In the solid -liquid phase change process, the weightless rates of polyalcohols are larger, and the weightless rates of polyalcohols are very small after polyalcohols are sealed. The higher the temperature of polyalcohols is, the higher the volatility Polyalcohols should be sealed in the process of thermal storage The phase change temperatures and phase change heats of monobasic, binary and triatomic systems consisting of neopentylglycol, pentaerythritol and trihytdroxy methyl-aminomethane were studied experimentally by differential scaning calorimeter(DSC) Feasibility of materials used in the building envelope was analyzed. Results can provide the basis for the application of solid-solid phase change materials in the building fields.