Country Report on Building Energy Codes in China

Abstract

ph: (865) 576-8401 fax: (865) 576-5728 email: reports@adonis.osti.gov Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161 ph: (800) 553-6847 fax: (703) 605-6900 email: orders@ntis.fedworld.gov online ordering: http://www.ntis.gov/ordering.htm This document was printed on recycled paper.Buildings account for about 30% of all energy consumption globally and a significant share of greenhouse gas emissions. Building energy codes help ensure that new buildings use energy efficiently, and this can reduce building energy use by 50% or more compared to buildings designed without energy efficiency in mind. This is important because buildings typically last 30-50 years, and it is much less expensive and time-consuming to design for energy efficiency than to retrofit a building later. Based on the experience of the Asia-Pacific region, it is clear that building energy codes, when implemented, save energy and improve comfort in new buildings. By design, most building energy codes are cost-effective, saving consumers significant amounts of money on their energy bills.The Asia-Pacific Partnership on Clean Development and Climate (APP) is a publicprivate collaboration to accelerate the development and deployment of clean energy technologies. APP partners include Australia,

Updates to the China Design Standard for Energy Efficiency in public buildings

“…It is beyond the focus of this study to provide comprehensive description, references (BECRC 2012, Mo et al, 2010;Li and Shui, 2015;Peng et al, 2013;Shui et al, 2009) are available for more in-depth information.…”

“…These standards defined the efficiency requirements of the building envelope, such as the minimum insulation of walls, roofs, and floors, the thermal performance of windows, as well as HVAC systems. Absent from these codes were lighting provisions, which were detailed in a separate regulation (Shui et al, 2009). The objective was to provide a prescriptive compliance path, requiring the efficient design of building components to meet standard requirements.…”

Building Energy-Efficiency Best Practice Policies and Policy Packages

“…In addition, the standard includes sections on thermally efficient building and heating design. For example, it provides information to assist designers in matching total installation capacity of the heat source with building heating load and gives information on hydraulic balancing devices and piping and heating system insulation (Shui, Evans, Lin, Jiang, Liu, & Somasundaram, 2009). …”

“…The second approach is performance based and gives designers more flexibility by setting a maximum allowable heating and cooling energy consumption per m 2 , depending on the heating and cooling degree-days of the project site. Building designers can then use dynamic simulation software (i.e., DOE-2) to calculate the building design's energy consumption under non-steady-state heat transfer conditions (Shui, Evans, Lin, Jiang, Liu, & Somasundaram, 2009). The 2001 design standard was revised in, 2010 to include a more stringent requirement for envelope thermal performance, technology measures, and a new shading coefficient requirement (Long, 2011).…”

A thorough assessment of China’s standard for energy consumption of buildings

“…A separate regulation provides details for the lighting system design (MoC, 2001;MoC, 2004;MoHURD, 2013;Shui et al, 2009). The target of these standards is to provide a prescriptive compliance path so that the design of building components will meet specific efficiency requirements.…”