Numerical Study On The Constant Temperature Environment And Air Distribution Of Nano-Scale Measurement

This research is part of an International Cooperation Project with North Australia University and founded by National Natural Science Foundation of China under contract number: 50420120134.The environment plays an important role in high-precise Nano-Scale measurement. High-precise measurement is based on control of environment, but only measurement instruments itself needs high-precise environment, so it is very significant to design a high precise constant temperature insulated cabinet for Nano-Scale measurement.The instruments is heated when it works, it makes the environment temperature ununiformity, thus appeared some blind area of temperature or intensive air movement, it influence the result of measurement. The temperature uniformity of the working place is depending on the mechanical structure design. Besides, when reduce the temperature of inlet air flow doesn't work obviously. Plus, we can isolate the heat source and cooling it separateness.The mathematical model of the temperature field of the semiconductor refrigeration device is described on this paper, and a numerical study on the temperature profile in a semiconductor refrigeration device was carried out using this model. Numerical simulation is applied to the present thermostated containers. Then the space tempo direction in the case of the gas flows, distribution of pressure in each point, the data of three-dimensional temperature field, etc. are gained. The problems in present thermostated containers are discussed, the factor influencing current air organization and temperature field are analyzed.