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本文对暖水瓶的导热途径进行了较为详细的理论分析.提出了瓶胆夹层气体临界压强的概念;给出了各种热损失的计算方法;并以常用的5号暖水瓶为例,对各种热损失及其在24小时内引起的温度降进行了定量计算;估价了它们各自对保温效果的影响.
In this paper, a detailed theoretical analysis of the thermal conduction path of the thermos flask is given in this paper. The concept of the critical pressure of the gas in the gall bladder and the gall bladder is put forward. The calculation methods of various heat losses are given. Taking the commonly used thermos bottle No. 5 as an example, The losses and their temperature drop caused within 24 hours were quantified; the effect of each of them on the thermal insulation effect was evaluated.