可持续性已经成为一个范围广泛的术语，几乎可以应用于地球上生活的方方面面，从地方到全球，从社会、经济到环境。可持续发展最普遍接受的定义是“在不损害后代满足自身需求的能力的情况下满足当前需求”（联合国布伦特兰委员会，1987年）。ASHRAE制定了一项战略计划，以推动可持续建筑设计和运营（ASHRAE可持续发展路线图，2006年）。ASHRAE的可持续性意味着节能、健康、高效的室内环境（Harrison，2008）。我们应该如何为暖通空调系统中的空气过滤提供这样的可持续性承诺？在本研究的第一部分（Sun等人，2009年），我们讨论了建立一个评估过滤器能效的工业标准的必要性，并开发了一种瓦特法来对过滤器能效进行分类。 在空气过滤器的可持续性方面，除过滤效率和能源效率外，还必须考虑更多因素，例如材料来源和处置、运输和搬运、安装和更换、潜在的旁通或污染，以及它们对生态系统的影响，本文是一项持续研究的第二部分，旨在通过使用寿命周期成本分析讨论空气过滤器在使用过程中的可持续性。该演示基于商业建筑空气处理机组（AHU）的实际案例研究。最后，将对过滤器设计、介质结构和粉尘负载形态进行深入研究，以便更好地理解空气过滤器的可持续设计。引文:ASHRAE会议论文，2010年，第116卷，pt。新墨西哥州阿尔伯克基2号

Sustainability has become a wide-ranging term that can be applied to almost every facet of life on Earth, from a local to a global scale, socially, economically and environmentally. The most commonly accepted definition of sustainable development is “meeting the needs of the present without compromising the ability of future generations to meet their own needs” (UN Brundtland Commission, 1987). ASHRAE has defined a strategic plan to lead to the advancement of sustainable building design and operation (ASHRAE’s Sustainability Roadmap, 2006). Sustainability for ASHRAE means energy efficient, healthy, productive indoor environments (Harrison, 2008). How should we deliver such sustainability promises to air filtration in HVAC systems? In Part I of this study (Sun et al., 2009), we discussed the need to establish an industrial standard to evaluate filter energy efficiency, and a wattage method was developed to classify filter energy efficiency.There are more factors that have to be considered in reality beyond filtration efficiency and energy efficiency in terms of sustainability of air filters, such as material source and disposal, shipping and handling, installation and change-outs, potential by-pass or contamination, and their impacts on the ecosystem, etc. This paper is the second part of a continuous research to discuss sustainability of the air filters along their service using life cycle cost analysis. The demonstration is based on a real case study of an air handling unit (AHU) of a commercial building. An in-depth study on filter design, media structure and dust loading morphology will be presented at the end to better understand a sustainable design for air filters.