14 室温変動理論

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タイトル別名
  • 14) ANALYSIS OF ROOM TEMPERATURE
  • 室温変動理論
  • シツオン ヘンドウ リロン

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Prof. T. Maeda has shown that room temperature φ_H(t) and φ_F(t) owing to heating H(t) and outdoor temperature F(t), respectively, would be gained from following formulae; [table] where φ_H(t) (or φ_F(t)) is the weight function about heating (or outdoor temperature) and it is gained by differentiation of φ_H(t) (or φ_F(t)) which is the room temperature in the case of unit heating (or unit outdoor temperature) when t>o. He has shown following two formulae which determine φ_H(t) and φ_F(t); [table] where h(t) is the heating function to keep the room temperature at 1℃ and N+j(t) is the heat coming into the room when outdoor and room temperatures are kept at 1℃ and 0℃, respectively, and s(t) is the differential of j(t). He has recommended for Q in (3) the amount which consists of the heat capacity of room air and a part of that of surrounding walls. As a result of this analyzation of room temperature, using Laplace transformation, the writer certified the formulae (1) and (2) are correct, and shew the general calculation for φ_H(t) and φ_F(t) as approximate function when h(t) is given as summation of several exponential turms. As φ_H(t) and φ_F(t) are required exactness, especially during small t (see (1) and (2)), the writer concluded that if they have not more than two exponential turms, there should happen large error, and value of Q must be merely c ρ υ which is the heat capacity of room air.

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