IE Q Credit 1: Outdoor Air Delivery Monitoring 1 Point Intent To pro

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试卷: IEQ 室内环境质量[查看]
IE Q Credit 1: Outdoor Air Delivery Monitoring
1 Point
Intent
To provide capacity for ventilation system monitoring to help promote occupant comfort and well-being.
Requirements
Install permanent monitoring systems to ensure that ventilation systems maintain design minimum requirements.
Configure all monitoring equipment to generate an alarm when airflow values or carbon dioxide (CO2) levels vary by
10% or more from the design values via either a building automation system alarm to the building operator or a visual
or audible alert to the building occupants
AND
CASE 1. Mechanically Ventilated Spaces
Monitor CO2 concentrations within all densely occupied spaces (those with a design occupant density of 25
people or more per 1,000 square feet). CO2 monitors must be between 3 and 6 feet above the floor.
Provide a direct outdoor airflow measurement device capable of measuring the minimum outdoor air intake flow
with an accuracy of plus or minus 15% of the design minimum outdoor air rate, as defined by ASHRAE 62.1-2007
(with errata but without addenda1) for mechanical ventilation systems where 20% or more of the design supply
airflow serves nondensely occupied spaces.
CASE 2. Naturally Ventilated Spaces
Monitor CO2 concentrations within all naturally ventilated spaces. CO2 monitors must be between 3 and 6 feet
above the floor. One CO2 sensor may be used to monitor multiple nondensely occupied spaces if the natural
ventilation design uses passive stack(s) or other means to induce airflow through those spaces equally and
simultaneously without intervention by building occupants.
Potential Technologies & Strategies
Install CO2 and airflow measurement equipment and feed the information to the heating, ventilating and air
conditioning (HVAC) system and/or building automation system (BAS) to trigger corrective action, if applicable.
If such automatic controls are not feasible with the building systems, use the measurement equipment to trigger
alarms that inform building operators or occupants of a possible deficiency in outdoor air delivery.

IEQ C1: 室外新风监控
1分

目的
通风系统有监控能力，增强室内健康和舒适。

要求
安装永久性监控系统，确保通风系统能维持最低设计要求。
当风量变化超过设计值10%，或CO2大于设置值10%时，监控系统应能通过自控系统报警，或
向维护人员、用户发出视听报警。
并且
情形1. 机械通风区域
所有人员密集区域配置CO2浓度监控(这些区域定义为每千平方英尺有25人)，CO2探头必须
设置在距地高3到6英尺的范围内。
安装有直接的室外新风风量测量装置，测量精度应达到设计风量的±15%，符合标准ASHRAE
62.1-2007的机械通风系统要求，非密集区域的新风测量精度可以是±20%。
情形2. 自然通风区域
所有自然通风区域安装CO2浓度监控，探头高度必须距地3～6英尺之间。当非密集区域被设计
为自然通风诱导区，与各处通风量协调一致时，该区域可以只设置一个探头，但不得收到建
筑用户干扰1.

技术措施和策略
安装CO2和室外新风风量测量装置，为暖通空调系统和楼宇自控系统提供信息，以进行正确反应。
如这些自控系统与建筑系统没有集成，则须有能力向建筑运行人员或用户发出新风不足的警示。