The impacts of evaluation indices and normalization methods on E-TOPSIS optimization of return vent height for an impinging jet ventilation system
作者机构：Department of Architecture and Civil EngineeringCity University of Hong KongHong KongChina School of Architecture and ArtCentral South UniversityChangshaChina
出 版 物：《Building Simulation》 (建筑模拟（英文）)
年 卷 期：2022年第15卷第12期
页 面：2081-2095页
核心收录：
学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 081404[工学-供热、供燃气、通风及空调工程] 0814[工学-土木工程]
基 金：This research is supported by Teaching Development Grant(PJ#6000738) Strategic Research Grant(PJ#7005679),City University of Hong Kong,Hong Kong SAR.The authors thank Dr.Kobayashi from Osaka City University for his kindly sharing of experimental data
主 题：evaluation indices normalization method impinging jet ventilation return vent height E-TOPSIS
摘 要：Stratified air distribution(STRAD)systems have been intensively investigated in recent decades for their energy-saving potential and good indoor air quality ***,the evaluation indices used to optimize STRAD systems and the normalization methods for weight calculation vary from one research to *** study aims to investigate the impacts of evaluation indices on the optimal return vent height of a room cooled by an impinging jet ventilation system(one type of STRAD system).The effects of several widely used normalization methods(i.e.,vector normalization,sum normalization,min-max normalization,and no normalization)on indices weights are *** evaluation indices are cooling coil load(Q_(coil)),energy-saving potential(ΔQ_(coil)),mean age of air(MAA),CO_(2) mass fraction,temperature difference between the head and ankles(ΔT_(0.1-1.1)),predicted mean vote(PMV),predicted percentage of dissatisfied(PPD),and draft rate(DR).The multi-criteria optimization method is the entropy-based technique for order preference by similarity to ideal solution(E-TOPSIS).As a result,the min-max normalization method evens the weight of each index and results in unreasonable relative ***,the raw matrix(i.e.,the normalization is omitted)is suggested for weight *** these indices,ΔT_(0.1-1.1) and PPD play critical ***ΔT_(0.1-1.1),the optimal return vent height changes from mid-level to near-floor,while without PPD,it changes to *** important result is that the Q_(coil) plays the most trivial role,followed by MAA and ***,the optimal return vent height is not determined by energy-saving performance but by performances of thermal comfort.
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