Building Envelope Energy Retrofit

加拿大现有的建筑存量很大。由于那里的建筑没有任何节能政策，特别是那些建于50年代、60年代和70年代初的建筑，这是导致我们建筑翻新的一个驱动力。这项改造对加拿大的建筑业来说是一个重要的经济机会。面临的挑战是评估这些能源改造对湿热性能的风险评估。尽管建筑的性能有了很大的进步，但仍要努力降低能耗，使其成为节能、经济的建筑。由于缺乏对如何高效和安全地对建筑物进行改造的误解，并支持加拿大正在进行的减少温室气体排放和能源使用的努力，因此提议考虑为商业和住宅建筑进行更好的能源战略改造。这将通过实验室测试、建模和现场监测来完成，以评估它们的能源和湿热性能。这项拟议的研究计划需要提供必要的科学数据和分析，以表征现有建筑的能量和湿热性能。*研究活动从部件和系统到整个建筑性能。这项工作与零能耗家庭相一致，加拿大将过渡到能源发挥主要作用的低碳未来。拟议的计划集中在两个主要主题上。第一个主题(主题A)是关于现有商业和大型砖石建筑的翻新：湿热和能源性能。第二个主题(主题B)是关于现有住宅建筑的翻新：湿热和能源性能。*长期目标是更好地了解整个建筑对热、空气和湿度(HAM)的反应，并采用整体和综合的方法研究它们对舒适性、能耗和围护结构耐用性的影响。这项研究最终将引导我们建造出负担得起、更耐用、更健康和更舒适的建筑。此外，还有几个具有短期目标的具体主题：*主题A：制定新的能源和湿热战略，从外部和内部改造现有商业建筑，以改善其能源和湿热性能。*主题B：开发新的能源战略，对现有住宅和高R墙体组件进行改造，以实现成本效益和能源效率。*设定的目标是朝着接近、净零、零准备能源或碳中性能源住宅不断改善建筑的能源和湿热性能迈出一步。由于对能源的要求更加严格，为了持续改善能源性能，需要对这一领域进行研究，这意味着负担得起、更耐用、更健康和更舒适的建筑。

Canada has a huge existing buildings stock. Since there were built without any energy efficiency policies, especially those built in early 50s, 60s and 70s, this is a driver that lead us to building's renovation. The retrofit represents a significant economic opportunity for the construction industry within Canada. The challenge is to evaluate the risk assessment of these energy retrofit on the hygrothermal performance. Despite there are many advances in buildings performance, but still effort has to be made to reduce the energy consumption to make them energy-efficient and cost-effective buildings. With the lack of retrofit misunderstanding on how to efficiently and safely retrofit buildings and to support ongoing efforts in Canada to reduce GHG emissions and energy use, it is proposed to look at better energy strategies retrofit for commercial and residential buildings. This will be done through laboratory testing, modeling and field monitoring to asses their energy and hygrothermal performance. This proposed research program is needed to provide the scientific data and analysis necessary to characterize the energy and hygrothermal performance of existing buildings.******The research activities span from components and systems to the whole building performance. This work goes in line with zero-energy ready homes and the Canada transitions to a low-carbon future for which energy plays a major role. The proposed program focused on two main themes. The first theme (Theme A) is on Retrofit of the Existing Commercial and Mass Masonry Buildings: hygrothermal and energy performance. The second theme (Theme B) is on Retrofit of the Existing Residential Buildings: hygrothermal and energy performance.***The long-term objectives are to develop a better understanding of the response of whole building to Heat, Air and Moisture (HAM) and study their effect on comfort, energy consumption and enclosure durability using a holistic and integrated approach. The study will eventually lead us to affordable, durable, healthier and more comfortable buildings. This is supplemented by several specific themes having short-term objectives: ***Theme A: Develop new energy and hygrothermal strategies to retrofit existing commercial buildings from the exterior and interior in order to improve their energy and hygrothermal performance. ***Theme B: Develop new energy strategies retrofit for existing residential buildings and high-R wall assemblies in order to be cost-effective and energy-efficient.******The set objectives are a step towards a continuous improvement of the energy and hygrothermal performance of buildings toward Near, Net-zero, Zero-ready energy or carbon neutral energy homes. Since the energy requirements are more stringent, research in this field is needed in order to sustain the energy performance improvement, which means affordable, durable, healthier and more comfortable buildings.