| Source problem and accompanying environment problem are important problems the entire world faced with. They directly influence the implement process of sustainable development strategy of human society in the future. Along with our country's innovation going on wheels, national economy progresses steadily and vigorously and people's standard of living improves in great extent. However, the problem on insufficiency of source providing, exorbitant exploitation, low efficiency using and serious waste more and more stands out, and turns into a disadvantageous factor that restricts our country's economy development and society progress. In order to solve this problem, our country has issued many policies. Especially in the field of electric power producing and providing, the "cut peak and fill vale" policy is instituted. It means making the electric power price in vale period only as 1/2～1/5 as that in peak period, to encourage user make use of the vale electric power, so that relieve the strained situation in peak period, change the complexion that electric power lacks in peak period and leaves unused in vale period. This precludes a good prosperity for exploiting technology of air-conditional heat-storing and energy conservation. As the pivotal device in air-conditional heat-storing system, the importance on research and manufacture of heat-storing bed is self-evident. Making a heat-storing bed with merits such as small volume, large quantity of stored heat, high efficiency in heat storing and releasing, long using life-span, low cost and making expediency will bring about significant economic benefit, environmental benefit and society benefit.This study is a part of the subject from Beijing Science Institution. The subject is study and manufacture on new kind of air-conditional heat-storing equipment( subject number: H020520010120). Our subject group make a new kind of phase change material as the study object, according to numerical calculating theory, numerical heat conduction, calculating fluid dynamics and phase-change energy storing theory, find a suitable numerical calculating method for solving the subject's study object, make use of this method in computer simulation analysis for heat engeering characteristics of heat-storing bed, provide reference base for mastering the influence of heat storing and releasing characteristics of heat-storing bed, flow characteristic of fluid media ,and geometric characteristic of heat-storing bed in heat storing and releasing process, and design, optimism, evaluating for heat-storing bed. The study method and process is as follows:Firstly establish a one-dimensional model, compare the calculated results with the experiment data, demonstrates the correctness of the compute model and compute method. Subsequently make an analysis on the situation some factors influencing the heat storing and releasing efficiency of the one-dimensional model. The one-dimensional model with small diameter sphere typed heat-storing unit and one-dimensional model with long-thin cylinder heat-storing unit are calculated respectively, get the changing relation of temperature field and heat storing and releasing quantity with time, study on the heat storing and releasing process, characteristics and law, get universal law from it. Compare the two model's calculated results are find that the heat storing and releasing efficiency of the former is higher than that of the latter. Using two-dimensional heat conducting differential equation to depict the heat-storing unit region, get the two-dimensional model of heat-storing bed. The two-dimensional model with plate-shaped heat-storing unit placed on end and two-dimensional model with cylinder heat-storing unit placed on end are calculated. The characteristics in the process of heat storing and releasing and the influence induced by accretion of cylinder's diameter are analyzed thoroughly. Finally use the segment liner interpolation method to simulate the complex relation between specific heat and temperature, and calculate the two...
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