TY - JOUR
T1 - Laboratory comparison of relative performance of gas phase filtration media at high and low O 3/NO 2 challenge concentrations (ASHRAE RP-1557)
AU - Han, Kwanghoon
AU - Zhang, Jensen S.
AU - Guo, Bing
AU - He, Chuan
N1 - Funding Information:
The financial support of ASHRAE and Syracuse University for the present study is also greatly acknowledged.
PY - 2014
Y1 - 2014
N2 - To guide the selection and design of air filter/cleaning devices for improving indoor air quality (IAQ), it is important to be able to assess the performance and characteristics of filter media within a reasonable/practical testing period for low concentration conditions (∼50 ppb) under which they are applied. Our study objectives were to investigate whether filter media showing good performance at high concentrations per ASHRAE Standard 145.1 (ASHRAE 2008) would also perform well at low concentrations, typically indoors, and to explore whether and how existing models for filtration media beds can be applied to predict and extrapolate the experimental performance results obtained under high concentrations. Six filter media having different filtration properties, pellet shape and size, and target compound were selected for this investigation. Experiments were performed at both high (∼1 ppm/100 ppm) and low (∼50 ppb) levels of O3/NO2 concentration for all media selected. Existing models were evaluated for the feasibility of data extrapolation from high to low concentration conditions. The results showed that (1) the relative performance of filter media at high concentration was qualitatively indicative of that from the low concentration results and (2) no existing models were suitable for any media having major catalytic removal characteristics for the cases studied, and an improved mechanistic model needs to be developed. © 2014
AB - To guide the selection and design of air filter/cleaning devices for improving indoor air quality (IAQ), it is important to be able to assess the performance and characteristics of filter media within a reasonable/practical testing period for low concentration conditions (∼50 ppb) under which they are applied. Our study objectives were to investigate whether filter media showing good performance at high concentrations per ASHRAE Standard 145.1 (ASHRAE 2008) would also perform well at low concentrations, typically indoors, and to explore whether and how existing models for filtration media beds can be applied to predict and extrapolate the experimental performance results obtained under high concentrations. Six filter media having different filtration properties, pellet shape and size, and target compound were selected for this investigation. Experiments were performed at both high (∼1 ppm/100 ppm) and low (∼50 ppb) levels of O3/NO2 concentration for all media selected. Existing models were evaluated for the feasibility of data extrapolation from high to low concentration conditions. The results showed that (1) the relative performance of filter media at high concentration was qualitatively indicative of that from the low concentration results and (2) no existing models were suitable for any media having major catalytic removal characteristics for the cases studied, and an improved mechanistic model needs to be developed. © 2014
UR - http://www.scopus.com/inward/record.url?scp=84903758443&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903758443&partnerID=8YFLogxK
U2 - 10.1080/10789669.2014.908691
DO - 10.1080/10789669.2014.908691
M3 - Article
AN - SCOPUS:84903758443
SN - 2374-4731
VL - 20
SP - 522
EP - 531
JO - Science and Technology for the Built Environment
JF - Science and Technology for the Built Environment
IS - 5
ER -