The correlation between the thermal stability and electroaffinity of a nanosolid has been explored from the perspective of surface and interface bond-order deficiency. It turns out that the coherency of an atom at the grain boundary and the portion of atoms in the skin of a nanosolid dominate the size dependence of critical temperatures ͑T C ͒ for phase transitions. The trapping potential well depression at the surface and interface not only shifts the valence density of state positively but also enlarges the electroaffinity that determines the strength of the bond. In particular, bond-nature alteration at the junction interface, or bond-nature evolution with the reduction of atomic coordination of III-or IV-A atoms, dominates the irregular T C change with the sizes of the embedded or the III-or IV-A bare nanosolids. Atoms in "superficial" or "interfacial" skins play the core role in dictating the size effect on the thermal stability and electroaffinity of a nanosolid whereas atoms in the core interior remain as they are in the bulk.

No abstract

An experimental table of the heating system of phase change heat storage is built with thermal-storage tank packaging phase change material, which transferred heat with internal fluid. The flow rate, inlet temperature, outlet temperature of internal fluid and the temperature of heat storage material are measured. The influences on the properties of heat storage system are analyzed.

The electrosorption technology for removal of chloride ion is researched by the static adsorption experiment, and various factors of the impact of the removal efficiency, combined with the removal of water quality and water treatment requirements, best adsorption conditions is identified that voltage is 5V, plate spacing is 1.0cm, adsorption time is 15min. Electrosorption technology in wastewater recycling project has certain benefits at economic, environmental and social, and have certain application value.

This paper analyzes the dynamic fault information (temperature, pressure, flow, noise, vibration etc.) in the process of operation of the air-conditioning system and establishes the simplified qualitative physical model which takes the surface air cooler as an example, and then writes out the mathematical model according to the simplified model. Finally, the paper gets some conclusions or conjecture suitable for the material object according to the research of the mathematical model.