共查询到20条相似文献,搜索用时 140 毫秒
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对多个污水处理厂的调研发现,鼓风机房、空压机房及变配电室等散热型厂房和污泥浓缩脱水机房、粗格栅及细格栅等臭气集中散发的厂房通风系统问题较为突出。针对运行中出现的问题,总结分析某些典型厂房内通风设计的要点,包括通风系统形式、通风量及气流组织等,为工程设计提供一定的指导。结果表明,不同类型厂房通风设计方法各异。散热型厂房以排除室内余热为主,且通风换气量受地域影响较大;臭气散发厂房应密切结合除臭系统设计,与工艺处理方式密切相关;其余以排除余热、余湿为主的厂房,通风量一般较小,应充分考虑厂房的建筑布置。 相似文献
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从用电设备负荷分级、供电方案、负荷计算、电压降比较、电能损耗比较、初始投资和运营投资比较、变压器运输方式以及对酒店客房的影响等方面介绍某280 m超高层建筑的变配电室选址情况,分析总结超高层建筑变配电室选址的难点、要点并提出相应的解决方案。 相似文献
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介绍了某高层建筑地下变配电室通风设计。变配电室设备发热量大,通风设计以消除余热为主。经过分析比较采用了将空气从低热区送入高热区后排出室外的做法,气流组织合理,避免了风管与电缆线的相互交叉。 相似文献
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为消除变配电房室内余热,基于对通风和空调两种方案的分析对比,选择了合理的通风空调设计方案。以深圳市某大型公建地下室变配电房为例,对其室内空气处理过程进行了计算分析。在空调机组稳态运行条件下,确定了变配电房室内空气状态点,并提出了变配电房通风空调系统的节能运行控制策略。 相似文献
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结合某生产车间的使用情况、楼板裂缝分布情况和现场检测、勘测数据,对该生产车间楼板的裂缝成因进行了分析,并提出了相应的处理办法,以确保使用安全以及生产的顺利进行,减少经济损失。 相似文献
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王太山 《智能建筑电气技术》2014,(6):111-113
施耐德电气Smartlink智能通讯系统首次简单方便地实现了终端配电与能源管理系统的连接和通讯,可以实时远程监控各个楼层、生产厂区、办公室以及车间的能耗情况,实现能源的优化使用,提高能源利用效率,合理进行成本分配。 相似文献
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Airflow and temperature distributions in an enclosure with heat sources ventilated by floor supply jets with floor or ceiling air exit vents were investigated using experimental and numerical approaches. These ventilation configurations represent the floor return or the top return underfloor ventilation systems found in real applications. Experiments and numerical simulations were performed on a full-sized environmental chamber. The results reveal that the temperature stratification in the enclosure highly depended on the thermal length scale of the floor supply jets. When the thermal length scale of the supply jet was >1, temperature stratification was minor for all tested heat densities and air distribution methods. Significant vertical temperature gradients occurred when the jet thermal length scale was <1. Changes in air distribution methods also became significant for temperature stratification at small supply jet thermal length scales. Temperature stratification also affected the terminal height of the momentum-dominant region of the vertical buoyant supply jets. The applicability of these results to underfloor ventilation design was also discussed. PRACTICAL IMPLICATIONS: In designing underfloor ventilation systems, supply jet conditions and heat load density have to be considered to avoid thermal discomfort because of excessive temperature stratifications. This study demonstrated, by both numerical simulations and experiments, that thermal length scale can be used as a design indicator to predict thermal stratifications under a floor return and a top return underfloor ventilation setting. 相似文献
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结合有关规范及多年药厂洁净车间的设计经验,对医药洁净厂房内的动力、照明、消防及接地等设计和具体做法作了简要论述,指出只有在对规范理解的基础上,以人为本,更新设计观念,才能使电气设计更趋完善。 相似文献
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在粉尘质量平衡方程基础上,建立了纺织车间通风状况与压力分布的理论关系式。分析了机械通风量和气流组织对车间压力分布的影响,并提出了纺织车间保持均匀稳定微正压的技术措施。 相似文献
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通过对湘电重装360t矿用重型电传动车辆装配车间地面的计算与分析,探讨了非均布荷载或活荷载,且荷载等级属特重的地面的设计. 相似文献
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《Energy and Buildings》2006,38(10):1212-1219
Many studies have shown that floor–supply displacement ventilation systems are better than mixing ventilation systems. The benefits include indoor air quality, thermal comfort and reduced energy use. The energy benefits depend on the climate conditions. This research compared the energy use of a floor–supply displacement ventilation system in a large industrial workshop with that of a mixing ventilation system for five U.S. climate regions. It was found that the energy use and the system performance vary with the locations. The displacement ventilation system may use more fan and boiler energy but less chiller energy than the mixing ventilation system. The total energy used is slightly less with displacement ventilation, although the ventilation rate was increased in order to handle the high cooling loads found in U.S. buildings. Thus, the displacement ventilation system can save some energy in cooling mode. However, displacement ventilation system has a lower capacity of dehumidification. This system alone, thus, is not suggested for use in humid regions. 相似文献
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结合实际工程,讨论了寒冷地区、多连跨、大跨度、高大焊接车间有效排除焊接烟尘的通风方法,确定了针对焊接烟尘悬浮带的通风方案。进一步利用CFD数值模拟方法证明了此方案的合理性,分析了改进方法,使其在最有效的保证车间内清洁的情况下,达到最佳的节能效果。 相似文献
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介绍了焊接车间焊接烟尘特点。在首推清洁工艺的前提下,从暖通专业角度阐述了焊接车间采暖通风设计,着重对焊接车间可采取的不同的通风方式进行了分析比较,并提出笔者认为效果相对较好的解决焊接车间焊接烟尘的通风方法。 相似文献