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ASHRAE transactions
American Society of Heating, Refrigerating and Air-Conditioning Engineers
ASHRAE transactions

American Society of Heating, Refrigerating and Air-Conditioning Engineers

0001-2505

ASHRAE transactions/Journal ASHRAE transactionsEI
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    TECHNICAL PROGRAM

    Rajdip DebnathDeepak KumarGauri Shanker GuptaSubhransu Ranjan Samantaray...
    xx-xl页
    查看更多>>摘要：Developing Modeling Approaches for Energy Performance Evaluation Track: Research Summit Room: Grand Ballroom 9 Chair: Patrick E Ryan, Full Member, Hanson Professional Services, Springfield, IL 1. Using Urban Building Energy Modeling to Quantify the Energy Saving Potential for Radiative Cooling (IN-24-C001) Zhaoru Liu, Fan Bu and Da Yan, Ph.D., Full Member, Building Energy Research Center, School of Architecture, Tsinghua University 2. Performance of Baseline Models for Power Shed Estimation on Campus Buildings (IN-24-A001) Yashvi Malhotra, Research Assistant, Student and Jordan D. Clark, PhD, S-B-a Member, (l)Ohio State University, Columbus, OH, (2)The Ohio State University, Lewis Center, OH 3. Modelling Temperature Dynamics of a Swine Barn Using Genetic Algorithm Based Gray Box Modelling (IN-24-A002) Rawisha Serasignhe, Research Associate, Student and Jordan D. Clark, PhD, S-B-a Member, (1)The Ohio State University, Columbus, OH, (2)The Ohio State University, Lewis Center, OH.
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    INAUGURAL ADDRESS

    Huy-Ngoc DuongLinh TranTuyen VuThanh Vo-Duy...
    xvii-xix页
    查看更多>>摘要：I am the one of happiest people alive. Here's why: my wife, Shirl, and I are celebrating 50 years of marriage! When Shirl and I got married, we were kids. She was 17 and I had just turned 18. Our wedding photographer's camera of choice was a Polaroid-you know, the ones with self-developing pictures? About an hour after our wedding, we pulled our 1965 Plymouth Sport Fury into a drive-through restaurant to grab two hot dogs for our honeymoon meal. Then, we were off to Myrtle Beach, South Carolina, for a two-night honeymoon getaway.
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    STATE OF THE SOCIETY ADDRESS

    Siyun LiWenchuan Wu
    xiv-xvi页
    查看更多>>摘要：Listen to this quote: "Through human ingenuity and determination, we can find solutions to the global climate crisis. As ASHRAE volunteers, this is what we do! We accept challenges and we solve problems!" This is a direct quote taken from my inaugural presidential address seven months ago. We built on that declaration, to be a collective body of problem solvers in tackling the global climate crisis. As you just saw in the opening video, ASHRAE Regions and Chapters showed an exemplary commitment not only to understanding how climate change affects building planning, design, construction, and operation, but they volunteered immense time and expertise to develop resources to support actionable, wide-scale building decarbonization practices. Our pursuit to action in tackling this challenge remains steadfast. If you recall from my last address, ASHRAE is committed to the following efforts:
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    Performance of Baseline Models for Power Shed Estimation on Campus Buildings

    Sudipta GhoshYounes J. IsbeihMohamed Shawky El MoursiEhab F. El-Saadany...
    3-5页
    查看更多>>摘要：In the United States, there is a mix of residential, commercial, and industrial buildings, each with different energy consumption patterns. The 2018 CBECS data shows that 12% of the US commercial floor space is educational buildings (EIA-CBECS Data," n.d.). Educational buildings include school and college buildings, however college buildings consume more fuel per unit area (Bae et al. 2022). College and university buildings include classrooms, laboratories, administration buildings, dormitory, and libraries. These buildings behave differendy than offices and other building types. Firstly, these spaces are occupied during the academic session (generally 9 months out of 12) and are at low capacity during the hottest and coldest periods of the year (summer and winter break). Secondly, the occupancy reduces from 5pm (Bae et al. 2022) which is the same time for peak demand in summers.
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    Modelling Temperature Dynamics of a Swine Barn Using Genetic Algorithm Based Gray Box Modelling

    Xin ZhangWeiying XieYunsong LiJie Lei...
    6-8页
    查看更多>>摘要：We conclude that the two-state model is the best performing model for the bam. One state model does not capture the thermal dynamics well enough, and the three-state model is overparameterized. The future directives are to fine tune the models by introducing process noise and white noise models with CTSM in R and use the optimize models to develop control strategies for fans to reduce the energy usage.
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    Occupant Response to Changes to Ventilation Rate in a Controlled Environment

    Fateh BoudardaraAbderraouf BoussifPierre-Jean MeyerMohamed Ghazel...
    9-10页
    查看更多>>摘要：In the preliminary data there is little significant difference between the occupant response to the modulation of ventilation performed in treatments 2 and 4 compared with the response to control at significance level a=0.5, after acclimation to the environment. Future work will include treatment 3, response to increasing temperature and constant ventilation, more participants across all treatments, and a set of two-hour trials to assess comfort over a more typical demand response period.
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    ASHRAE Standard 241 and Graphene Silver-Coated MERV-A 9-A Filters: A Case Study

    Cong ZhangHongbo BiTian-Zhu XiangRanwan Wu...
    11-14页
    查看更多>>摘要：ASHRAE Standard 241-2023 introduces equivalent clean airflow per person (ECAi) necessary to substantially reduce the risk of disease transmission during infection risk management mode (1RMM). This study compares the efficacy of a novel silver-graphene oxide (AgGO) coated MERV-A 9-A (M9AZG) filter to commonly used filters through Std. 241 's approach. Theoretical analyses across the office, gym, classroom, and supermarket scenarios reveal M9AZG's comparable performance to MER V-A 13-A, especially in high occupancy density settings. Furthermore, reducing occupancy alongside M9AZG adoption emerges as a useful strategy for improving indoor air quality and avoiding HVAC modifications. Using lower MER V-rated filters with an enhanced viral filtration efficiency (VFE) technology could remove concerns associated with higher resistance to airflow, energy consumption and maintenance costs.
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    Assessing Awareness and Willingness of College Students to Participate in Demand-Side Management Strategies: A Survey-Based Approach

    Xiurui XieYansong ChuaGuisong LiuMalu Zhang...
    15-18页
    查看更多>>摘要：Buildings represent the largest contributor to energy consumption in electric grids of the United States, making them a significant focal point for energy improvements and sustainability efforts. The broad participation of residential buildings in demand side management (DSM) can support decarbonization goals and the use of power generated by clean energy sources. The purpose of this study is to assess awareness and potential factors that may influence college students' willingness for load flexibility to support DSM participation. An online survey was conducted among students majoring in civil, environmental, and applied engineering in two distinct classes. Preliminary findings suggest that enhanced awareness of the DSM strategies reduce levels of concern with participation in demand side management programs. The factors that appear to drive willingness to participate in DSM for this specific population are related to the potential reduction of electricity costs, helping the environment, and overall energy savings.
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    Drone-Mounted Photoionization Detector Protocol for Improved Outdoor Dispersion Measurements

    Hiroyasu NakanoRyo AriizumiToru AsaiShun-Ichi Azuma...
    19-21页
    查看更多>>摘要：Measurements of dispersion of contaminants in air are important for several applications including permitting of power generation plants, sizing and operation of laboratory and vivarium exhaust stacks and fans and modeling urban air quality. Many methods have been put forward for estimating the dynamics of plumes issuing from building exhausts and other sources, including visual inspection, first principles arguments and derivations, scale model measurements using techniques such as flame ionization detectors, and others. In outdoor environments, measuring dispersion in real environments is often challenging because of several factors, including cross-contamination from many constituents that already exist in outdoor air, the need to measure very low concentrations, and the expense of any tracer gas that is used for these purposes.
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    Retrofitting Application of EC Motor Plug Fans in HVAC systems

    Xikun ZhangDongjin SongDacheng Tao
    22-24页
    查看更多>>摘要：This study focuses on an electrically commutated (EC) motor with a direct-driven plug fan in the application of HVAC systems. In recent years, the improvement of permanent magnet motors in efficiency and reliability has urged to replace the traditional AC motor with an EC fan. Many HVAC projects have started to retrofit the AC motor belt-driven centrifugal fan with housing into the EC fan. To compare EC fans' performance and benefits to AC fans, this study experiments and field measurement on two retrofit projects. The performance rating is based on AMCA 207 standards, including transmission loss, motor efficiency, driver efficiency, and fan efficiency based on the AMCA certification. In the retrofitting project, the error for the efficiency evaluation method and field measurement is within 5%, which proves that the evaluation could be applied. Case 1 is a fan retrofit project of AHU in the airport waiting room. The overall efficiency of the original AC fan is 51%, and the EC fan is 66%, which results in 23% full load energy saving. In Case 2, a primary AHU retrofit project in a hospital, the overall efficiency of a 10% AC fan was replaced with a 42% EC fan. Both cases show significant potential for energy saving.
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