The Pacific Northwest National Laboratory (PNNL) is a leading organization globally on building energy codes and standards. PNNL has served as the technical lead for DOE’s Building Energy Codes Program in the U.S. and worked on building energy codes in many countries including Vietnam, India, China, and Russia.
Buildings currently account for over 35% of Vietnam’s total energy consumption. Buildings codes could result in 30-40% buildings energy savings. The Vietnam Building Energy Code (VBEEC) was introduced in 2013 and now scheduled for revision in 2016.
Modern residential building energy codes provide a component tradeoff mechanism by which builders can trade reductions in the efficiency of some building components in trade for corresponding improvement in other components. One common tradeoff approach is based on maintaining a building "UA value," which represents the building envelope's overall thermal conductance. The building UA is the sum of individual component UA values, each of which is calculated as the product of the component's U-factor and area.
Heat recovery ventilators (HRVs) save energy by recovering heat that would otherwise be exhausted as part of energy code-mandated mechanical ventilation systems. Residential HRVs can be life cycle cost effective depending on equipment/installation costs and the severity of the climate. This brief evaluates HRV cost effectiveness in the context of building energy codes to identify the climate zones in which a code might reasonably require residential HRVs.
In 2017, New York State Energy Research and Development Authority (NYSERDA) developed its 2016 Stretch Code Supplement to the 2016 New York State Energy Conservation Construction Code. Since 2017, NYSERDA has continued to develop the 2018 edition, as part of the efforts to achieve a statewide Net Zero Energy Code by 2028. To support this effort, Pacific Northwest National Laboratory (PNNL) conducted energy simulation analysis to quantify the energy savings of proposed commercial provisions of the NYStretch-Energy Code 2018 compared to ANSI/ASHRAE/IES1 Standard 90.1-2013.
This presentation shows a brief overview of some of the principles and practices and stakeholder engagement related to building energy codes. It also includes a brief example of the Australian government that has engaged in code assessment. There's a commitment to continually engage with stakeholders, both through the development and revision process, technical committees, working groups, and the stakeholder surveys that they've done recently to understand implementation.
Certification of green building materials is a proven and effective way to incorporate, at large scale, products that are energy efficient, have minimal ill effect on indoor air quality, and/or have other green attributes into buildings. Recently, the General Office of the State Council of China, in order to increase the supply of high-quality green products into the buildings market, issued guidance on developing a uniform system for green product standards and certification by 2020.
This toolkit is designed as a first step in helping countries, cities and experts in developing, adopting and implementing their codes. In its present form, this toolkit is set out as a useful reference, but also as a means of assessing the potential of such information to help governments and other stakeholders. The toolkit covers five main topics: guidance for cities and jurisdictions that are just getting started, and tools that can provide inspiration and knowledge regarding code development, adoption, implementation and evaluation.