共查询到20条相似文献,搜索用时 31 毫秒
1.
《建筑热能通风空调》2019,(6)
介绍了人防指挥工程通风空调及防化设计,阐述了通风空调系统计算及设计方法,指出通风空调系统的设计要点,并对通风空调系统方案及冷源选择、工程防化设计进行了详细分析,总结了人防指挥工程通风空调系统设计主要原则,为同类工程设计提供了一定的理论依据。 相似文献
2.
3.
4.
介绍了某地下综合用房工程空调通风以及防排烟系统设计内容、方案与战时人防功能的配合设计。总结了工程具有采用吊装式空调机组、自探系统、空调通风系统兼作防排烟系统等特殊性 相似文献
5.
伍晓峰 《建筑热能通风空调》2019,38(5)
在现有新建医院建筑设计中,人防中心医院工程的空调通风设计参数与普通空调通风设计参数差异较大,且又需满足人防工程的防护要求。针对这一问题,笔者通过工程实例分析探讨空调冷源的选择,空调通风设计以及设计过程中遇到的困难等问题。 相似文献
6.
本文结合增城市中心医院地下室人防急救医院工程.简述对人防医疗救护工程的通风与空调系统设计.总结该类人防工程的暖通设计要点。 相似文献
7.
结合某地坑道式人防工程的空调设计,对坑道式人防工程的空调机组的选择、回风系统的设计、排烟口的设置及系统的自动控制等问题进行了探讨。 相似文献
8.
9.
文章介绍了人防医疗工程的分类及任务、工程组成及相互关系,并结合工程实例阐述人防医疗工程的进排风系统设计及空调系统设计方案。 相似文献
10.
11.
变风量空调系统的新风问题 总被引:3,自引:2,他引:1
以某写字楼为例,分析了变风量系统中不同分区形式对各朝向房间的人均新风量分配的影响,认为新风量分配不均的情况主要出现在冬季和过渡季,提出满足所有朝向房间人员健康要求同时能实现过渡季利用新风节能的新风量设计标准;建议在建筑设计中增加新风竖井面积,在空调外区适当增加最小新风量的取值。 相似文献
12.
13.
Long Xu Fanghua Zhu Fusheng Zha Qiong Wang Bo Kang Chengbin Yang Wei Zhang Zhenghong Liu 《Soils and Foundations》2021,61(2):444-452
Determination of air pressure and assessment of air losses in clayey soil are of great importance to implementation of compressed air tunneling. In the present work, a series of air flow tests were performed to provide a more reasonable method based on flow characteristics of snap-off pressure and the dissolution/diffusion. Results showed that, the nonlinear air flow behavior and gas breakthrough were presented with the increase in air pressure. After that, the excessive pressure decreased continuously to reach an equilibrium termed as the snap-off. For the tested clayey soil, snap-off pressures around 250 kPa could be adopted as the air pressure, which was significantly lower than the gas breakthrough pressures. Diffusion coefficient of 1.5 × 10-11 m2/s could be determined in the followed dissolution/diffusion stage, which bring 3 orders of decreasing magnitude in air losses compared to the capillary flow occurred after gas breakthrough. As a conclusion, the adoption of snap-off pressure in compressed air tunneling could effectively prevent the continuous air/water flow in clayey soil and create a more human-friendly environment. Additionally, less air losses could be presented compared to that using gas breakthrough pressure, indicating tremendous energy savings in field implementation. 相似文献
14.
15.
16.
Influence of air supply parameters on indoor air diffusion 总被引:6,自引:0,他引:6
This paper presents the field distributions of air velocity, temperature, contaminant concentration, and thermal comfort in an office with displacement ventilation for different air supply parameters such as the effective area, shape, and dimension of the diffuser and the turbulence intensity, flow rate, and temperature of the air supplied. The research is conducted numerically by using an airflow computer program based on a low-Reynolds-number k-ε model of turbulence. It can be concluded that the effective area, shape, and dimension of the diffuser and the turbulence intensity of the air supplied have little effect on the room air diffusion except at floor level. The influence of the flow rate and temperature of the air supplied is very significant on the air diffusion as well as on the thermal comfort and indoor air quality. 相似文献
17.
18.
19.