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本文采用不定常常维热传导方程的有限差分法研究了室外气温波动由地下岩土和基础传热对连续20昼夜20±0.01℃高精度光栅刻线恒温室地面温度和室温的影响。得出了室外气温波动对于要求一个月内维持±0.01℃的恒温室室温没有影响等结论,并论证了多种情况时结论的正确性。可供其他同类工程设计建造时参考。
In this paper, the finite difference method of the unsteady heat conduction equation is used to study the influence of outdoor temperature fluctuations on the ground temperature and room temperature of grating grating constant temperature chamber with 20 ± 0.01 ℃ for 20 consecutive days. It is concluded that the fluctuation of outdoor air temperature has no effect on the temperature of room temperature ± 0.01 ℃ within one month and the conclusion of the conclusion is validated in many cases. For other similar engineering design and construction of reference.