XXASHRAE手册第19章数据处理和电信设施.docx

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1、Xxashrae手册第19章数据处理和电信设施第19章数据处理与电信设施Design CriteriaHVAC Load considerationsHVAC Systems and ComponentsAir DistributionAncillary spacesOther Systems and considerations19.1 设计标准19.2 空调负荷注意事项19.3 空调系统与组件19.4 气流组织19.5 辅助空间19.6 其它系统与注意事项DATACOM (data processing and telecommunications) facilities are pred

2、ominantly occupied by computers, networking equipment, electronic equipment, and peripherals. The most defining HVAC characteristic of data and communications equipment centers is the potential for exceptionally high sensible heat loads (often orders of magnitude greater than a typical office buildi

3、ng). In addition, the equipment installed in these facilities typically:数据通信(数据处理与电信)设施要紧由计算机、网络设备、电子设备与其它辅助设备 构成。数据与通讯设备中心空调最要紧的特征是，需要应对极高的显热冷负荷(要比普通的 商业办公楼负荷大得多)。另外，空调系统要具有下列这些功能：.Serves mission-critical applications (i.ev continuous operation).Has special environmental requirements (temperature,

4、humidity, and cleanliness) .Has the potential for disruptive overheating and equipment failure caused by loss of cooling 满足特定的应用(比如：持续运行)； 具备特殊环境要求(温度、湿度与洁净度)； 在突发性过热与由于设备损坏不能持续制冷的情况下，系统能继续冷却电子设备。Design of any datacom facility should also address the fact that most datacom equipment will be replaced

5、 multiple times with more current technology during the life of the facility. As described in Datacom Equipment Power Trends and Cooling applications (ASHRAE 2005a), typical datacom equipment product cycles are 1 to 5 years, whereas facilities and infrastructure HAVC life cycles of 10 to 25 years. R

6、eplacement equipment has historically required more demanding power and cooling requirements.任何数据通信设施的设计时，都要面对这样一个事实：在通信设施的使用寿命期间，随 着技术的进展，大量现有的通信设备将会被将来的新设备更换掉。在数据通信设备电源的进 展过程与冷却应用中(ASHRAE 2005a),典型的数据通讯设备产品寿命为1至5年，而空调设 施与基础设施的寿命为10年至25年。新设备对电功与制冷量要求的会更大。Understanding these critical parameters is e

7、ssential to datacom facility design.熟悉这些关键因素对数据通信设施的设计是必不可少的。The preparation of this chapter is assigned to TE 9.9, Mission-critical Facilities, Technology Spaces, and Electronic Equipment.由ASHRAE中负责“重要设施、工艺房间与电子设备”的技术委员会TC9.9编著。Design Criteria19.1设计标准Types of datacom (ASHRAE 2005a) equipment that r

8、equire air conditioning to maintain proper environmental conditions include数据通信中心(ASHRAE 2005a)的空调系统的工作环境中，包含的数据通信设备类别有： Computer servers (2U and greater) Computer servers (IU, blade, and custom) Communication (High-density) Communication (Extreme-density) tape storage Storage servers Work stations

9、(standalone) Other rack- and cabinet-mounted equipment 服务器(2台或者更多) 服务器(1 台,black, and custom) 通讯(高密度) 通讯(超高密度) 磁带存储器 存储服务器 工作站(独立) 其它机架与机柜安装设备Personnel also occupy datacom facilities, but their occupancy is typically transient and environmental conditions (e.gv temperature, noise) are more typically

10、 dictated by equipment needs. However; human occupancy in smaller datacom facilities may influence the ventilation air quantity. A data center is a building or portion of a building whose primary function is to house a computer room and its support areas; data centers typically contain high-end serv

11、ers and storage products with mission-critical functions. Personnel also occupy datacom facilities, but their occupancy is typically transient and environmental conditions are usually more dictated by equipment needs, thereby making it more of a process cooling application rather than comfort coolin

12、g. However; human occupancy in smaller datacom facilities may influence ventilation air requirements.工作人员也占用数据通信中心，但其通常是暂时的，因此机房环境条件(如温度，噪音)常 由设备的需求决定。尽管工作人员占用的数据通信机房较小，但通风量也会受影响。数据中 心可能一个建筑物或者建筑物的一部分，其要紧功能是容纳一个计算机房与其他附属设施； 数据中心通常包含高端服务器与具有重要功能的存储设备。工作人员也占用数据通信中心， 但其通常是暂时的，因此机房环境条件(如温度，噪音)常由设备的需求决定，

13、因此空调系 统更多的是冷却功能而不是舒适功能。尽管工作人员占用的数据通信机房较小，但对通风设 计也会有要求。Overview19.1.1 概述Environmental requirements of datacom equipment vary depending on the type of equipment and/or manufacturer. However; a consortium of server manufacturers has agreed on a set of four standardized conditions (Classes 1 to 4)z list

14、ed in Thermal Guidelines for Data Processing Environments (ASHRAE 2008). A fifth classification, the Network Equipment-Building Systems (NEBS) class, is typically used in telecommunications.不一致类型的设备或者制造商,他们的数据通信设备对环境的要求都是完全不一致的。然而， 服务器制造厂家们达成了四个标准原则，此四条标准原则列于数据中心冷却指南(Thermal Guidelines for Data Proc

15、essing Environments ASHRAE 2008)o 第五个分类，网络设备构建 系统(NEBS)类，通常用于通信。 Class 1: typically a datacom facility with tightly controlled environmental parameters (dew point, temperature, and relative humidity) and mission-critical operations; types of products typically designed for these environments are ent

16、erprise servers and storage products. 第一类：通常数据通信设施有严格操纵环境参数(露点，温度与相对湿度)与重要操作；通 信设备服务器与存储设备通常按照此条规定的环境参数设计。 Class 2: typically a datacom space or office or lab environment with some control of environmental parameters (dew point, temperature, and relative humidity); types of products typically designed for this environment are small servers, storage products, persona