Energy-efficiency interventions are crucial for sustainable building operations to accommodate emerging indoor air quality (IAQ) criteria into their engineering life cycles. While several studies have addressed building energy consumption and IAQ considerations separately, few provide integrated analysis of these aspects in response to building hygiene practices. In response, this study evaluates the effectiveness of routine heating, ventilation, and air conditioning (HVAC) cleaning on energy consumption and supply airflow patterns in non-residential public buildings. This study juxtaposes HVAC energy consumption and ventilation performance before, during and after routine HVAC cleaning, across buildings situated in four different climate zones, while operating in cooling mode. Each site had nearly identical HVAC systems serving similar architectural features and occupational loads; these were segregated into an intervention (cleaned HVAC system) that could be compared to an otherwise identically operating HVAC (control system), which was not cleaned. Following prescriptive cleaning, HVAC systems exhibited significant energy consumption reductions and delivered higher airflows compared to their uncleaned counterparts. On average, intervention systems saved between 41 % and 60 % on conveyance (fan/blower) energy, with one exception, and supplied 10 % and 46 % more airflow compared to their uncleaned counterparts. This research demonstrates how a new generation of low-cost HVAC system monitors can compile Internet of Things (IoT) archives to show immediate energy consumption benefits associated with cleaning HVAC components and their associated ductwork serving relatively high occupancy commercial and educational spaces.

中文翻译：

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暖通空调清洁对能耗和送风量的影响：多气候评估


能源效率干预措施对于可持续建筑运营至关重要，以将新出现的室内空气质量 （IAQ） 标准纳入其工程生命周期。虽然有几项研究分别讨论了建筑能耗和 IAQ 考虑因素，但很少有研究针对建筑卫生实践对这些方面进行综合分析。作为回应，本研究评估了常规供暖、通风和空调 （HVAC） 清洁对非住宅公共建筑能耗和送风气流模式的有效性。本研究将位于四个不同气候区的建筑物在常规 HVAC 清洁之前、期间和之后的 HVAC 能耗和通风性能并列，同时在冷却模式下运行。每个站点都有几乎相同的 HVAC 系统，服务于相似的建筑特征和职业负载;这些被隔离成一个干预（清洁的 HVAC 系统），该干预可以比作其他方面运行相同的 HVAC（控制系统），后者没有被清洁。与未清洁的系统相比，经过规定清洁后，HVAC 系统表现出显着的能耗降低并提供更高的气流。平均而言，干预系统可节省 41% 至 60% 的输送（风扇/鼓风机）能源，但有一个例外，与未清洁的系统相比，提供的气流增加了 10% 和 46%。这项研究展示了新一代低成本 HVAC 系统监控器如何编译物联网 （IoT） 档案，以显示与清洁 HVAC 组件及其相关管道系统相关的能源消耗优势，这些管道系统服务于相对高占用率的商业和教育空间。