EA Prerequisite 2: Minimum Energy Performance Required Intent T

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试卷: EA 节能与大气[查看]
EA Prerequisite 2: Minimum Energy Performance
Required

Intent
To establish the minimum level of energy efficiency for the proposed building and systems to reduce environmental and economic impacts associated with excessive energy use.

Requirements
OPTION 1. Whole Building Energy Simulation
Demonstrate a 10% improvement in the proposed building performance rating for new buildings, or a 5%
improvement in the proposed building performance rating for major renovations to existing buildings, compared
with the baseline building performance rating.
Calculate the baseline building performance rating according to the building performance rating method in
Appendix G of ANSI/ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda1) using a computer simulation model for the whole building project.
Appendix G of Standard 90.1-2007 requires that the energy analysis done for the building performance rating method include all energy costs associated with the building project. To achieve points using this credit, the proposed design must meet the following criteria:
-- Comply with the mandatory provisions (Sections 5.4, 6.4, 7.4, 8.4, 9.4 and 10.4) in Standard 90.1-2007 (with errata but without addenda1).
-- Include all energy costs associated with the building project.
-- Compare against a baseline building that complies with Appendix G of Standard 90.1-2007 (with errata
but without addenda1). The default process energy cost is 25% of the total energy cost for the baseline
building. If the building’s process energy cost is less than 25% of the baseline building energy cost, the LEED
submittal must include documentation substantiating that process energy inputs are appropriate.
For the purpose of this analysis, process energy is considered to include, but is not limited to, office and general miscellaneous equipment, computers, elevators and escalators, kitchen cooking and refrigeration, laundry washing and drying, lighting exempt from the lighting power allowance (e.g., lighting integral to medical equipment) and other (e.g., waterfall pumps).
Regulated (non-process) energy includes lighting (for the interior, parking garage, surface parking, façade,
or building grounds, etc. except as noted above), heating, ventilation and air conditioning (HVAC) (for space
heating, space cooling, fans, pumps, toilet exhaust, parking garage ventilation, kitchen hood exhaust, etc.), and service water heating for domestic or space heating purposes.
Process loads must be identical for both the baseline building performance rating and the proposed building
performance rating. However, project teams may follow the exceptional calculation method (ANSI/ASHRAE/
IESNA Standard 90.1-2007 G2.5) to document measures that reduce process loads. Documentation of process load energy savings must include a list of the assumptions made for both the base and the proposed design, and theoretical or empirical information supporting these assumptions.
Projects in California may use Title 24-2005, Part 6 in place of ANSI/ASHRAE/IESNA Standard 90.1-2007 for
Option 1.
OR
OPTION 2. Prescriptive Compliance Path: ASHRAE Advanced Energy Design Guide
Comply with the prescriptive measures of the ASHRAE Advanced Energy Design Guide appropriate to the project
scope, outlined below. Project teams must comply with all applicable criteria as established in the Advanced
Energy Design Guide for the climate zone in which the building is located.
PAT H 1. ASHRAE Advanced Energy Design Guide for Small Office Buildings 2004
The building must meet the following requirements:
-- Less than 20,000 square feet.
-- Office occupancy.
PAT H 2. ASHRAE Advanced Energy Design Guide for Small Retail Buildings 2006
The building must meet the following requirements:
-- Less than 20,000 square feet.
-- Retail occupancy.
PATH 3. ASHRAE Advanced Energy Design Guide for Small Warehouses and Self Storage
Buildings 2008
The building must meet the following requirements:
-- Less than 50,000 square feet.
-- Warehouse or self-storage occupancy.
OR
OPTION 3. Prescriptive Compliance Path: Advanced Buildings™ Core Performance™ Guide
Comply with the prescriptive measures identified in the Advanced Buildings™ Core Performance™ Guide
developed by the New Buildings Institute. The building must meet the following requirements:
-- Less than 100,000 square feet.
-- Comply with Section 1: Design Process Strategies, and Section 2: Core Performance Requirements.
-- Health care, warehouse and laboratory projects are ineligible for this path.

Potential Technologies & Strategies
Design the building envelope and systems to meet baseline requirements. Use a computer simulation model to assess the energy performance and identify the most cost-effective energy efficiency measures. Quantify energy performance compared with a baseline building. If local code has demonstrated quantitative and textual equivalence following, at a minimum, the U.S. Department of Energy (DOE) standard process for commercial energy code determination, then the results of that analysis may be used to correlate local code performance with ANSI/ASHRAE/IESNA Standard 90.1-2007. Details on the DOE process for commercial energy code determination can be found at http://www.energycodes.gov/implement/determinations_com.stm.

EAP2: 最低能效要求
必须

目的
对于目标建筑和系统建立最低的节能水准，以避免过渡用能产生的环境和经济影响。
要求
选项1. 全建筑能源模拟
相对基准建筑能效评估方法，说明新建筑的目标建筑有一个10%的能效提高，重大改建建
筑有一个5%的能效提高。
采用一个计算机模拟过程，对全建筑按照ASHRAE 90.1-2007标准中附录G的建筑性能评估
方法，计算基准建筑的能效性能。
附录G的能源分析法要求对涉及建筑的所有能源费用进行评估，如要根据此项目得分，目标
建筑必须满足：
-- 符合ASHRAE 90.1-2007的强制性条款(5.4, 6.4, 7.4, 8.4, 9.4 和10.4条)；
-- 包含建筑涉及的所有能源费用；
-- 对比符合标准ASHRAE 90.1-2007附录G的基准建筑。默认作业能源费用为基准建筑能
源费用的25%，如果建筑作用能源费用低于基准建筑能源费用的25%，则提交的LEED
文件必须给予说明其合理性。
为本分析之目的，作业能耗包括（但不限于）办公和通用电气设备、计算机、电梯（滚梯）、
厨房机具、冰箱、洗衣（烘干）机械、除辅助灯光外的照明（例如医疗器械上的照明）、
及其它（如喷水泵）等。
常规用能（非作业能耗）包括照明（室内、车库、地面停车、建筑里面、地面等）、采暖、
通风、空调（室内采暖、制冷，风机，水泵，卫生间换气装置，车库通风，厨房油烟机等）、
和使用及采暖之目的的热水。
基准建筑与目标建筑都必须确定作业能耗水平，但也按ASHRAE 90.1-2007标准G2.5条的
例外计算方法，说明作业能耗的降低。说明作业能耗的节能，必须包括基准建筑与设计建
筑的估定清单，并提供理论或经验数据支持这些估定。
加州的工程可以采用标准Title 24-2005, 第6部分，以在选项1中代替ASHRAE 90.1-2007..
或者
选项 2. 规定性达标方式：ASHRAE高级能源设计指南
如下列要求，说明工程符合ASHRAE高级能源设计指南的规定性措施，对于建筑所在地区
的气候分区，工程必须满足所有适用条款。
方式 1. ASHRAE高级能源设计指南—小型办公建筑2004
建筑必须符合以下要求:
-- 小于20,000平方英尺；
-- 办公用途；
方式 2. ASHRAE高级能源设计指南—小型零售建筑2006
建筑必须满足以下要求：
-- 小于20,000平方英尺；
-- 零售用途；
方式3. ASHRAE高级能源设计指南—小型仓库和自用储藏建筑2008
建筑必须满足以下要求：
-- 小于20,000平方英尺；
-- 仓库或自用储藏用途.
或者
选项3. 规定性达标方式：高级建筑™ 核心性能指南™
符合新建筑协会编制的高级建筑核心性能指南的规定性措施，建筑必须满足以下要求：
-- 小于100,000平方英尺；
-- 符合第1节: 设计策略，和第2节：核心性能要求；
-- 办公、学校、公共建筑和零售工程，小于100,000平方英尺，必须满足核心性能指南的
第1节和第2节；
-- 其它建筑形式，小于100,000平方英尺，必须满足核心性能指南的基本要求；
-- 健康中心、仓库和实验室工程适用于本方式。

技术措施和策略
建筑围护结构和系统要满足基准建筑的要求，采用计算机模拟方式评估能耗性能，并确定最大
经济性节能措施。对照基准建筑量化能耗性能。
如果地方规范可以被证明在要求及量值方面，与美国能源部的确定商业建筑能耗标准至少相当，
则采用地方规范中与ASHRAE 90.1-2007相关的能耗分析结果可能予以使用。美国能源部关于
商业建筑能耗确定标准，可见 http://www.energycodes.gov/implement/determinations_com.stm.