IE Q Credit 2: Increased Ventilation 1 Point Intent To provide addit

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试卷: IEQ 室内环境质量[查看]
IE Q Credit 2: Increased Ventilation
1 Point
Intent
To provide additional outdoor air ventilation to improve indoor air quality (IAQ) and promote occupant comfort,
well-being and productivity.
Requirements
CASE 1. Mechanically Ventilated Spaces
Increase breathing zone outdoor air ventilation rates to all occupied spaces by at least 30% above the minimum
rates required by ASHRAE Standard 62.1-2007 (with errata but without addenda1) as determined by IEQ
Prerequisite 1: Minimum Indoor Air Quality Performance.
CASE 2. Naturally Ventilated Spaces
Determine that natural ventilation is an effective strategy for the project by following the flow diagram process
shown in Figure 2.8 of the CIBSE Applications Manual 10: 2005, Natural Ventilation in Non-domestic Buildings.
AND
OPTION 1
Show that the natural ventilation systems design meets the recommendations set forth in the CIBSE manuals
appropriate to the project space.
PATH 1. CIBSE Applications Manual 10: 2005, Natural Ventilation in Non-domestic Buildings
PATH 2. CIBSE AM 13:2000, Mixed Mode Ventilation
OR
OPTION 2
Use a macroscopic, multizone, analytic model to predict that room-by-room airflows will effectively naturally
ventilate, defined as providing the minimum ventilation rates required by ASHRAE 62.1-2007 Chapter 6 (with
errata but without addenda1), for at least 90% of occupied spaces.
Potential Technologies & Strategies
For mechanically ventilated spaces: Use heat recovery, where appropriate, to minimize the additional energy
consumption associated with higher ventilation rates.
For naturally ventilated spaces, follow the 8 design steps described in the Carbon Trust Good Practice Guide 237:
-- Develop design requirements.
-- Plan airflow paths.
-- Identify building uses and features that might require special attention.
-- Determine ventilation requirements.
-- Estimate external driving pressures.
-- Select types of ventilation devices.
-- Size ventilation devices.
-- Analyze the design.
Use public domain software such as NIST’s CONTAM, Multizone Modeling Software, along with LoopDA, Natural
Ventilation Sizing Tool, to analytically predict room-by-room airflows.

IEQ C2: 增加通风
1分

目的
为提升室内空气质量，促进室内健康、舒适、工作效率，增加室外新风量。

要求
情形1. 机械通风区域
所有使用空间的呼吸区域的室外新风率，至少高于标准ASHRAE 62.1-2007的最低通风率
30%。（如IEQ P1项目，最低室内空气品质中要求的）。
情形2. 自然通风区域
使用区域的自然通风设计符合1998年“碳责任优良实践指南237”的建议，其自然通风措施效能
应按照特许建筑工程师协会(CIBSE)的应用手册10:2005-“非家用建筑自然通风”中的图1.18的
流量图表法进行确定。
并且
选项1
采用图表和计算说明自然通风系统设计符合特许建筑工程师协会(CIBSE)的应用手册10：
2005-“非家用建筑自然通风”的建议。
或者
选项2
采用一个宏观、多区域分析模型，逐屋预测气流说明其可有效通风，至少90%的使用空间
的最低通风率满足ASHRAE 62.1-2007第6章之要求。

技术措施和策略
机械通风空间：为减少由高通风率可能产生的能源消耗，采用热回收措施。
自然通风空间：遵循“碳责任优良实践指南237”给出的8个设计步骤：
-- 编制设计要求；.
-- 策划气流路径；
-- 确定建筑用途和需要关注的特征；
-- 确定通风要求；
-- 估算外部驱动风压；
-- 选择通风装置；
-- 确定装置尺寸；
-- 分析设计。
采用计算机软件逐个房间分析气流，如：NIST的CONTAM、多区域模拟软件、LoopDA、自然
通风量化工具。