气候变化领域集成服务门户(CCPortal): Energy-efficient operation of portable air cleaners based on real-time prediction of non-uniform concentrations of indoor air pollutants in open offices

CCPortal

DOI	10.1016/j.buildenv.2024.111478
	Energy-efficient operation of portable air cleaners based on real-time prediction of non-uniform concentrations of indoor air pollutants in open offices
	Chen, Difei; Liu, Mingqi; Guo, Weichen; Li, Yiqun; Xu, Bin; Ye, Wei
发表日期	2024
ISSN	0360-1323
EISSN	1873-684X
起始页码	256
卷号	256
英文摘要	In an open office environment with high occupant density and random occupancy patterns, excessive energy consumption is often observed because mechanical ventilation (MV) is usually designed and operated assuming a full-occupancy-based ventilation rate (VR). Considering the duo challenges of post-pandemic and climate change, this study proposes a real -time monitoring and optimization approach for operating portable air cleaners (PACs) to assist and reduce the energy consumption of the MV while maintaining the minimal VR and improving indoor air quality (IAQ). The approach was as follows. First, by assuming four VRs and 36 different emission sources, numerical simulations were conducted and validated based on an actual open office on non -uniform concentrations of a surrogate for indoor air pollutants (IAPs) throughout the breathing zone. Second, the preand post-purified IAP distributions were obtained using a limited number of sensors and trained by two artificial neural networks. Third, the real -time optimization of PACs ' on/off operation and placements was accomplished by the particle swarm optimization algorithm to balance energy output and improve IAQ simultaneously. Results showed that by deploying four sensors, the predictions of post-purifying concentrations were in acceptable accuracy (i.e., CV-RMSE <2.0%) within 30 - 40s. Using at most three PACs resulted in a significant decline in local IAP concentration levels. Meanwhile, an average reduction of total energy consumption of MV and PACs was 34.6% compared to using MV to reach the same levels. Overall, this study supports the use of PACs to assist MV in achieving energy efficiency and good IAQ.
英文关键词	Open office; Portable air cleaner; Artificial neural network; Particle swarm optimization; Energy consumption; Indoor air quality
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Environmental ; Engineering, Civil
WOS记录号	WOS:001225589500001
来源期刊	BUILDING AND ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299906
作者单位	Tongji University; Tongji University; Tongji University
推荐引用方式 GB/T 7714	Chen, Difei,Liu, Mingqi,Guo, Weichen,et al. Energy-efficient operation of portable air cleaners based on real-time prediction of non-uniform concentrations of indoor air pollutants in open offices[J],2024,256.
APA	Chen, Difei,Liu, Mingqi,Guo, Weichen,Li, Yiqun,Xu, Bin,&Ye, Wei.(2024).Energy-efficient operation of portable air cleaners based on real-time prediction of non-uniform concentrations of indoor air pollutants in open offices.BUILDING AND ENVIRONMENT,256.
MLA	Chen, Difei,et al."Energy-efficient operation of portable air cleaners based on real-time prediction of non-uniform concentrations of indoor air pollutants in open offices".BUILDING AND ENVIRONMENT 256(2024).