method of determination of resistance to heat transfer boundary design

摘要

the invention relates to the construction and can be used for measuring diagnostic facilities in accordance with the resistance of heat transfer the boundary structure of regulatory requirements.the tasks addressed by the invention is to define more time the measurements u03c44, simplifying the task, reducing the labour intensity of u043cu0430u0442u0435u043cu0430u0442u0438 theoretical calculation, reduce the length of the measurement, increasing the likelihood of obtaining a more accurate result.the tasks are those that measure the temperature of the external surface of the boundary structure in the initial period of time u03c40, temperature of external power u0445u043du043eu0441u0442u0438 boundary structure and the outdoor air at different points of time u03c4j where j takes values from 1 to 4, with u03c44 - u03c40 * 6determine the overall heat transfer coefficients at the external surface of the boundary construction for moments of time u03c4j, high mass specific heat with u0438u0437u043eu0431u0430u0440u043du0443u044e ec and the average density u03c1u044du043a segments of the boundary of j takes the values of multiples of that of hours (0.1...0,5...1) intervals within u03c40 until the maximum value u03c4max, at which temperature the potential reaches the opposite surface of the u043eu0433u0440u0430u0436u0434u0430 of the design, i.e. when a resistance heat transfer boundary design Ru044du043a j at any point of time u03c4j sets of expressions;where u03b4i - thickness of the boundary structure.