Modeling of HVAC operational faults in building performance simulation
Abstract
Operational faults are common in the heating, ventilating, and air conditioning (HVAC) systems of existing buildings, leading to a decrease in energy efficiency and occupant comfort. Various fault detection and diagnostic methods have been developed to identify and analyze HVAC operational faults at the component or subsystem level. However, current methods lack a holistic approach to predicting the overall impacts of faults at the building level—an approach that adequately addresses the coupling between various operational components, the synchronized effect between simultaneous faults, and the dynamic nature of fault severity. This study introduces the novel development of a fault-modeling feature in EnergyPlus which fills in the knowledge gap left by previous studies. This paper presents the design and implementation of the new feature in EnergyPlus and discusses in detail the fault-modeling challenges faced. The new fault-modeling feature enables EnergyPlus to quantify the impacts of faults on building energy use and occupant comfort, thus supporting the decision making of timely fault corrections. Including actual building operational faults in energy models also improves the accuracy of the baseline model, which is critical in the measurement and verification of retrofit or commissioning projects. As an example, EnergyPlus version 8.6 was used to investigate themore »
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1532219
- Alternate Identifier(s):
- OSTI ID: 1416212
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Energy
- Additional Journal Information:
- Journal Volume: 202; Journal Issue: C; Journal ID: ISSN 0306-2619
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 29 ENERGY PLANNING, POLICY, AND ECONOMY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; Operational fault; HVAC system; EnergyPlus; Modeling and simulation; Energy performance; Thermal comfort
Citation Formats
Zhang, Rongpeng, and Hong, Tianzhen. Modeling of HVAC operational faults in building performance simulation. United States: N. p., 2017.
Web. doi:10.1016/j.apenergy.2017.05.153.
Zhang, Rongpeng, & Hong, Tianzhen. Modeling of HVAC operational faults in building performance simulation. United States. doi:https://doi.org/10.1016/j.apenergy.2017.05.153
Zhang, Rongpeng, and Hong, Tianzhen. Sat .
"Modeling of HVAC operational faults in building performance simulation". United States. doi:https://doi.org/10.1016/j.apenergy.2017.05.153. https://www.osti.gov/servlets/purl/1532219.
@article{osti_1532219,
title = {Modeling of HVAC operational faults in building performance simulation},
author = {Zhang, Rongpeng and Hong, Tianzhen},
abstractNote = {Operational faults are common in the heating, ventilating, and air conditioning (HVAC) systems of existing buildings, leading to a decrease in energy efficiency and occupant comfort. Various fault detection and diagnostic methods have been developed to identify and analyze HVAC operational faults at the component or subsystem level. However, current methods lack a holistic approach to predicting the overall impacts of faults at the building level—an approach that adequately addresses the coupling between various operational components, the synchronized effect between simultaneous faults, and the dynamic nature of fault severity. This study introduces the novel development of a fault-modeling feature in EnergyPlus which fills in the knowledge gap left by previous studies. This paper presents the design and implementation of the new feature in EnergyPlus and discusses in detail the fault-modeling challenges faced. The new fault-modeling feature enables EnergyPlus to quantify the impacts of faults on building energy use and occupant comfort, thus supporting the decision making of timely fault corrections. Including actual building operational faults in energy models also improves the accuracy of the baseline model, which is critical in the measurement and verification of retrofit or commissioning projects. As an example, EnergyPlus version 8.6 was used to investigate the impacts of a number of typical operational faults in an office building across several U.S. climate zones. Finally, the results demonstrate that the faults have significant impacts on building energy performance as well as on occupant thermal comfort. Finally, the paper introduces future development plans for EnergyPlus fault-modeling capability.},
doi = {10.1016/j.apenergy.2017.05.153},
journal = {Applied Energy},
number = C,
volume = 202,
place = {United States},
year = {2017},
month = {5}
}
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