介绍了国内暖通空调标准规范的基本状况，按照标准规范体系中的三大构成部分分别阐述了暖通空调设计标准的制订和修订过程，暖通空调净化设备标准体系，以及暖通空调施工验收标准。

Deposition of particles in turbulent duct flows is crucial process in a number of industrial and environmental applications. Therefore, in this paper, particle deposition in a horizontal turbulent duct flow is simulated by CFD (computational fluid dynamics) modeling. Dimensionless deposition velocities of particles ranging from 10 to 200mm are predicted by oneway coupling Lagrangian eddy lifetime model combined with a computation model of particle deposition in the turbulent duct flow with a fully developed velocity profiles based on RANS (Reynolds-averaged Navier–Stokes) equations at all three air speeds of 3.0, 5.0 and 7.0ms-1. It is shown that deposition rates (dimensionless deposition velocities) of particles to floors are higher than that to vertical wall and ceiling surfaces. Floor deposition rates increase with dimensionless relaxing time increasing, ceiling deposition rates decrease to zero with dimensionless relaxing time increasing, and wall deposition rates show the increase first and then a subtle decrease with dimensionless relaxing time increase at different air speeds. Wall and ceiling deposition rates increase with air speed increase at the same dimensionless relaxing time. Floor deposition rates decrease with air speed increase at the same dimensionless relaxing time. The simulation results are expected to be helpful for evaluating particle deposition rates in some environmental and industrial square ducts.

Natural ventilation is an important means to improve thermal comfort conditionings and to reduce the energy consumption for residential buildings. Solar chimney system can be used to enhance the natural ventilation effectiveness, which can make full use of solar energy to produce upward momentum to a mass of air, thereby converting the thermal energy into kinetic energy. In this paper, a numerical study has been carried out to predict mass flow rate, temperature field and velocity field for vertical roof solar chimney under steady-state conditions. Suggestions for optimum construction design of solar chimney have been put forward based on large numbers of simulation results. Results showed that for vertical roof solar chimney with both ends open, the optimum gap-toheight ratio 1/2 was found in the range of chimney gaps investigated, compared with Trombe wall optimum ratio 1/10. The predicted ventilation rate increases with solar radiation and solar chimney height. Meanwhile, reverse flow can be observed at the outlet when the chimney gap increased to a certain value. These findings are helpful in designing a natural ventilation solar chimney for residential buildings.

Heat transfer process and natural ventilation driven by a solar chimney attached to a sidewall of building are investigated with CFD technique (MITFLOW) in detail. In this paper, conditions and parameters studied in the modelling study are the cavity width of the solar chimney, the wall temperature, the height and breadth of the solar chimney, the ratio of outlet area to inlet area as well as the outlet location of the solar chimney. The ranges of calculation parameters focused on a solar chimney with single-sided solar collector (single-sided heated wall) cover following conditions: solar chimney length L=0.5m～5.0m, breadth B=0.1m～0.5m, height H=2.0m～5.0m, and B/H=0.05～0.25. Heated wall surface temperature Tw is changed in the range of 30℃～70℃; the ratio of the outlet area to inlet area Ar is changed in the range of 0.6～1.0. It is found that for given building geometry and inlet areas, there is an optimum cavity width at which a maximum airflow rate can be achieved. Based on the prediction, the airflow rate reaches maximum when B/H is approximately 1/10. It is also found that for given chimney geometry, solar chimney ventilation flow rate can be increased with the enhancement of chimney height only the cross sectional area no more than the critical area, because cross section area has a strong effect on the transitional and/or turbulent convective heat transfer in an enclosure. From the view of economy technology, the optimized height of a solar chimney can be determined according to the optimized section ratio of breadth to height and available breadth in practice. On the analysis of CFD prediction, it is noted that optimized ventilation flow rate can be obtained when the outlet area takes the same area as the inlet area. Generally, there is good agreement among the numerical results, available experimental data from literature and theoretical analysis of natural ventilation from the solar chimney.

利用试验和数值模拟手段，对90°弯管Z型组合进行了研究，分析了管道中压力和速度分布，对相邻影响系数随弯管间距离变化规律进行总结，对原因作出分析，为矩形90°弯管Z形组合的相邻影响规律的研究和预测提供了依据。

探讨了指定压力边界条件在无限空间自然对流模拟中的数值实施方法。指出了由边界的指定压力转化为速度的方法。以常壁温圆柱在无限空间的二维层流自然对流为例，实施了这种方法，计算结果与其它数值解、试验值和分析解的对比表明，本方法不但实施方便而且可以采用较小的计算区域而获得正确的结果，节省了计算时间和计算存储量。

提出了可以预测室温垂直分布的模式分析方法，多个实例的预测与实测间的差值被证明小于1.2℃。

A proper representation of the air flow in a ventilation duct is crucial for adequate prediction of the deposition velocity of particles. In this paper, the mean turbulent air flow fields are predicted by two different numerical models (the Reynolds stress transport model (RSM) and the realizable k-e model). Contours of mean streamwise velocity deduced from the k-e model are compared with those obtained from the Reynolds stress transport model. Dimensionless deposition velocities of particles in downward and upward ventilation duct flows are also compared based on the flow fields presented by the two different numerical models. Trajectories of the particles are tracked using a one way coupling Lagrangian eddy-particle interaction model. Thousands of individual particles are released in the represented flow, and dimensionless deposition velocities are evaluated for the vertical walls in fully developed smooth vertical downward and upward square duct flows generated by the RSM and realizable k-e model. The effects of particle diameter, dimensionless relaxation time, flow direction and air speed in vertical upward and downward square duct flows on the particle deposition velocities are discussed. The effects of lift and gravity on the particle deposition velocities are evaluated in vertical flows presented by the RSM. It is shown that the particle deposition velocities based on the RSM and realizable k-e model have subtle differences. The flow direction and the lift force significantly affect the particle deposition velocities in vertical duct flows. The simulation results are compared with earlier experimental data and the numerical results for fully developed duct flows. It is shown that the deposition velocities predicted are in agreement with the experimental data and the numerical results.

通风与空调系统中的风管系统（简称：通风系统）内的颗粒沉积会对室内人员造成严重影响，同时还会降低通风与空调系统的性能，甚至导致室内二次污染。如果清楚了通风管内何处沉积着或易于沉积有害气溶胶，就能在最初设计通风系统时多加注意，在设计阶段就应该尽量减少它们的沉积，同时还可以提高建筑补救效率以及降低相关费用。掌握通风管道中颗粒沉积的知识不仅对模拟建筑内颗粒情况有帮助，还可以更加充分地了解颗粒运动情况。

在分析单根水平线源（热丝）的基础上，定义了单列线热源上方的尾流场特征速度及特征温度，建立了预测单列水平线热源自然对流换热的折算混合对流模型。