奥斯汀市(美国)

总结、概要

虽然奥斯汀建筑节能规范是根据IECC和ASHRAE样版规范制定的,但是它根据本地情况进行了修改以使规范更加严格。规范规定了住宅和非住宅建筑能效标准,对建筑外围的热性能,和HVAC、热水、照明和辅助系统的能效提出了要求。规范允许使用法条式规范方式或模拟计算(参考建筑)方式以证明合规。

奥斯汀市是美国最早(1970年)建立综合性自愿能效项目的城市。自此以后,奥斯汀市不断提高对能效的要求,并在2013年将自愿性规范提升为多数建筑类型的强制性规范。现行规范和有关辅助体系包括一系列旨在改善能效的动态计划,这包括在2015年前实现“近零能耗建筑”项目、强制性能源审查、能效评级和披露、气密性测试、调试、公共建筑物特殊要求以及认证计划等。

 

一般信息

规范的全称

2009年奥斯汀建筑节能规范

颁布年份

2010

实施时间

Friday, October 1, 2010

主管机关

Austin City Council

连接

http://www.iccsafe.org/Store/Pages/Product.aspx?id=3800X09

链接至相关网页

http://www.energycodes.gov/adoption/states/texas

规范恢复

地理位置覆盖

奥斯汀市

规范设置在:

地区/州/省 水平

范围

建筑规范的范围:

  • 住宅建筑
    • 单户
    • 多户建筑
  • Public buildings
    • Offices
    • 医院
    • Educational buildings

GBPN气候分类:

  • 温暖潮湿:
    Under the IECC Climate Zone Map defined as Climate Zone 2 (hot and humid climate).

建筑规范的类型

建筑规范的类型:

  • 样板规范、框架或实际规范:
    Model Code with local ammendments. Austin’s energy code is based on IECC and ASHRAE 90.1, but they’ve adopted local amendments to make it considerably more stringent. Their code improvements are on a trajectory to make all new homes in the city Zero-Energy Capable by 2015.
  • 法条规范:
    Prescriptive measures. This is considered the simplest path. These requirements do not vary by building size, shape, window area, or other features. The 2009 IECC has a single table of requirements for insulation R-values and window and door U-factors and SHGC. There is a corresponding U-factor table that permits compliance of less common component types (e.g., structural insulated panels), albeit without any cross-component trade-offs.
  • 权衡:
    Total building envelope UA (U-factor multiplied by area). This is the path predominantly used by the REScheckTM software. Based on the prescriptive U-factor table, it allows trade-offs whereby some energy-efficiency measures can fall below code requirements if balanced by other measures that exceed code requirements.
  • 能耗声明:
    Many buildings that are sold now fall under the ECAD ordinance requiring an energy audit when sold. Large non-residential must be benchmarked using Portfolio Manager or the Austin Energy Business Energy Analysis tool.
  • 样板/参考建筑:
    Simulated performance (requires software programs). This path allows compliance if the home has a calculated annual energy consumption (or energy cost) equal to or less than that of a standard reference design that just meets the code’s prescriptive requirements. The method requires that heating, cooling and hot water system loads are included in the calculation. Renewable energy measure can now be included in this calculation.Called, the Total Building Performance method for commercial buildings.

涉及的能源

能源要求的基础:

  • 终端能源:
    Austin Energy primarily uses 'site' energy for its calculations.

建筑规范包括的能源消耗和功能:

  • 供暖
  • 制冷
  • 通风
  • 气密性
  • 热桥
  • 热水
  • 建筑物组成部分(电梯、水泵等)
  • 照明
  • 热量回收
  • 自然通风
  • 遮阳
  • 日光照明要求
  • 可再生能源 (太阳能、光伏等):
    Partially, no mandatory requirements but it is encouraged.

实施

建筑规范的实施情况:

强制性执行

实施类型:

  • 本地执行
  • 第三方检验
  • 入住后控制

现场检查发生

  • 施工期间
  • 竣工后

支持规范实施的认证:

  • 超出最低建筑规范要求的建筑标识
  • 锅炉检验
  • 暖通空调系统检验

不合规的惩罚:

  • 拒发入住许可
  • 拒发施工许可

支持实施的措施:

  • 调试要求
  • 合规前要求进行的气密性测试
  • 检验人员培训

新建筑值

Residential and Non-Residential Buildings.

GBPN气候分类

制冷型

Coefficient for Comparison of Climate Zones

0.00

中值最小最大
采暖度日 (°C)951--
制冷度日 (°C)1989--
U值 (W/m²K)
屋顶0.2屋顶2-
0.45墙2-
地面0.36地面2-
窗户2.9窗户2-
其他---
整体U值---
窗户1窗户2
G 值 / 太阳得热系数0.3-
可视传输--
百分比--

其他要求设定:

  • Thermal bridge demands
  • 通风,通风设备:
    Prescriptive equipment sizing and efficiency requirements.
  • Pressure testing for ducting
  • Domestic Hot Water COP - Heat Pump:
    Prescriptive equipment sizing and efficiency requirements and insulation requirements.
  • Value for airtightness:
    n50 is 7.0
  • 热回收
  • 暖通空调技术系统
  • 高效照明

规范历史和未来目标

设定要求的一般流程:

  • 利益团体提前很多时间得到未来目标的通知。:
    Stakeholders are involved and informed in the development of the code.

零能耗目标:

  • 近零能耗/零能耗/正能耗的定义:
    Zero Energy Capable is defined as being so energy efficient that it is cost effective to install enough on-site renewable energy collectors to make the homes truly net-zero energy homes.
  • 不包括所有的终端用能设备
  • 没有准备好现实的路线图
  • 国家零能耗目标的时间没有确定
  • 公共建筑特殊要求:
    New construction and major renovations of city buildings costing $2 million or more and requiring work in 5 major LEED rating categories must achieve LEED Silver certification; Requirement also applies to smaller renovations, interior finishing, and additions costing $300,000 or more and requiring work in 3 major LEED rating categories.
  • 链接

较早规范数量

3

超过最低标准的现行水平(现行规范)

2

未来可能采用的规范数量

1

多重数据组:

  • Levels beyond minimum:
    The city of Austin has numerous green building provisions within the city building code, with requirements that vary according to location, zoning designation and building type. The building standards rely on the Austin Energy Green Building Rating system and the LEED certification system as metrics. In some cases, developers have the option of achieving compliance under either of the two systems.
  • Year historic or aspirational codes (planned) :
    1990
  • 预期能耗的实际消耗
    • Relative target in percent:
      0
    • Absolute target:
      0
  • Levels set in energy frame
  • Primary Energy Performance Frame Residential:
    2015
    Zero energy capable by 2015.
  • Primary Energy Performance Frame Non-Residential :
    2015
    Zero energy capable by 2015.

支持措施

是否有 鼓励人们超最低要求的激励措施/奖励?

There are a number of schemes available in the state of Texas, the following are specific to Austin. 1, Performance Based Incentives - Austin Energy - Commercial PVINcentive Scheme. 2, Utility Loan Programs - Austin Energy - Residential Energy Efficiency Loan Program and the Residential Solar Program. 3, Utility Rebate Programs - Austin Energy - Commercial Energy Management Rebate Program, Commercial New Construction Efficiency Rebates, Free Home Energy Improvements Program, Multi-Family Energy Efficienc

利益相关群体参与规范制定

Very involved. The community is more forward thinking that most in Texas and the community supports a relatively aggressive approach to sustainability.

在规范实施后提供给利益相关群体的培训水平?

Online resources and free courses and seminars.

向普通大众提供合适的信息

Online resources and free courses and seminars.

支持认证计划

Austin Energy Green Building Program (AEGB) has a number of certification schemes for different types of buildings; AEGB Single-Family Rating System, the AEGB Multi-family Rating System and the AEGB Commercial Rating System. All based on a 5-Star rating system, 5 being the most efficient. U.S. Green Building Council -Central Texas Chapter.

规范是否免费获取?

Code is avilable free to the public.
Yes.

评估

Compliance assessment