| 1. | Analysis and determination of items amount of reaction coefficient for unsteady heat transfer calculation of wall
墙体不稳定传热计算中反应系数项数的分析与确定 |
| 2. | The increased demand during the last two decades for more precise methods to calculate heating and cooling loads has led to many studies of the transient heat flow to ( and from ) the ground
在过去的二十年中,由于需要更精确的计算空调冷热负荷,使得触地围护结构不稳定传热成为研究的焦点。 |
| 3. | The comparisons and validations show that the analysis for transient heat conduction of cylindrical and spherical constructions is also simple and efficient , as long as the fdr method is used
计算实例表明，用该方法分析圆柱形、球形结构不稳定传热过程同样是简单易行的，并且计算结果准确可靠。 |
| 4. | In the light of the interaction of oil ， pipeline and ambient media and their unstable heat transmission ， considering temperature dependent on physical properties and phase change of oil ， a mathematical model for thermal calculation is presented
针对加热原油管道停输后油品、管道及周围介质的相互关系和它们的不稳定传热，提出了热力计算的数学模型。 |
| 5. | A formula for calculating the heat transfer coefficients was also obtained by regressing experimental data , which can predicted the heat transfer coefficients within deviation of + 1 l % . the formula can satisfied the precision requirement in project design
应用不稳定传热理论建立了传热过程数学模型，提出了传热系数计算式。将传热系数计算值和实验值进行比较，误差在11以内，能满足工程设计的精度要求。 |
| 6. | The exact prediction of space load can assure the indoor environment quality , and is beneficial to promote energy conservation . as a large proportion of total space load , the space load resulting from transient heat conduction of building envelope is difficult to calculate exactly
室内负荷的正确预测对保证室内环境质量、节约能源有着重大意义，而由建筑围护结构不稳定传热引起的室内负荷在整个负荷中占较大比例且难以准确计算。 |
| 7. | The direct root - finding method , as a conventional method for analyzing transient heat conduction of wall , will produce much inevitable problem such as root - missing and low efficiency . at all times , people quested for more efficient and simple method to analyze its dynamic heat conduction
传统的分析墙体不稳定传热的方法?直接求根法存在失根、效率低下等诸多问题，一直以来，人们不断寻求更加简单、更高效率的方法来分析其动态传热过程。 |
| 8. | It will present a new method - frequency - domain regression ( fdr ) method based on system identification theory for calculating transient heat flux through multi - layer walls . first , the frequency characteristics of the total transmission matrix are calculated within the frequency range concerned . then , a simple polynomial 5 - transfer function is yielded from the theoretical frequency characteristics for internal , cross and external heat conduction by applying appropriate identification algorithm , respectively
首先在所关心的频域范围内计算出总的传递矩阵的频率响应，然后采用适应的辨识算法从墙体不稳定传热的理论频率响应中构造出一个简单的多项式s -传递函数，该多项式s -传递函数与墙体瞬时传热的理论的超越s -传递函数完全等价。 |
