@inproceedings{f0405057e991453b9d71674b569d84fd,
title = "Energy analysis, optimal high-limit control and engineering approach of air-side economizers",
abstract = "Most air-handling units in commercial buildings adopt an air-side economizer to use outdoor air for free cooling when the outdoor air is cool or cold. An economizer changeover is sequenced by high-limit controls for outdoor air. Several highlimit controls have been specified with consideration of climate zones and availability of humidity measurements. However, confusion regarding optimal outdoor air high-limit curves and the lack of accurate humidity measurements are major barriers to achieve maximum economizer energy savings. To obtain a comprehensive understanding of economizer high-limit controls and to identify an alternative for effective economizer operations, optimal high-limit curves are studied by simulating and comparing the energy consumption between minimum outdoor air and economizer modes of an air-handling unit. Investigation of impacts on optimal high-limit curves reveals that supply air temperature can replace return air humidity to attain optimal high-limit curves. A practical engineering approachfor economizer control also is investigated by the use of internet weather data to substitute for local outdoor air humidity measurements.",
author = "Gang Wang and Li Song",
note = "Publisher Copyright: {\textcopyright} 2014 ASHRAE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 2014 ASHRAE Annual Conference ; Conference date: 28-06-2014 Through 02-07-2014",
year = "2014",
language = "English (US)",
series = "ASHRAE Transactions",
publisher = "American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)",
pages = "383--396",
booktitle = "ASHRAE Transactions",
}
