Predictive maintenance scheduling optimization of building heating, ventilation, and air conditioning systems

Wu, Yaqing; Maravelias, Christos T.; Wenzel, Michael J.; ElBsat, Mohammad N.; Turney, Robert T.

doi:10.1016/j.enbuild.2020.110487

Cited by 23 publications

(7 citation statements)

References 22 publications

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“…Various smart energy systems have been reviewed and compared by Xu et al [47]. The planning of HVAC upgrades should also be optimized to maximize the systems' energy efficiency [48].…”

Section: Mechanical Ventilationmentioning

confidence: 99%

The Applicability of Coanda Effect Hysteresis for Designing Unsteady Ventilation Systems

Skotnicka-Siepsiak

2020

Energies

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Energy-saving ventilation systems are designed to improve the energy efficiency of buildings. Low energy efficiency in buildings poses a considerable problem that needs to be addressed. Mechanical ventilation with heat recovery has gained increased popularity in recent years. Mechanical ventilation has numerous advantages, including easy adjustment and control, high indoor air quality and elimination of indoor pollutants. Mixing ventilation is the most popular type of mechanical ventilation, in particular in residential buildings. Unsteady ventilation is a type of mixing ventilation that involves stronger mixing effects and smaller vertical temperature gradients to improve indoor air quality (IAQ) and minimize energy consumption. This study examines the possibility of controlling and modifying Coanda effect hysteresis (CEH) to generate unsteady flow and simulate the conditions of unsteady mixing ventilation. The experiment was performed on a self-designed test bench at the University of Warmia and Mazury in Olsztyn. It demonstrated that an auxiliary nozzle can be applied at the diffuser outlet to control CEH and the angles at which the air jet becomes attached to and separated from the flat plate positioned directly behind the nozzle. The study proposes an innovative mixing ventilation system that relies on CEH. The potential of the discussed concept has not been recognized or deployed in practice to date. This is the first study to confirm that an auxiliary nozzle by the diffuser outlet can be operated in both injection and suction mode to control CEH. In the future, the results can be used to design a new type of nozzles for unsteady ventilation systems that are based on CEH control.

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“…Various smart energy systems have been reviewed and compared by Xu et al [47]. The planning of HVAC upgrades should also be optimized to maximize the systems' energy efficiency [48].…”

Section: Mechanical Ventilationmentioning

confidence: 99%

The Applicability of Coanda Effect Hysteresis for Designing Unsteady Ventilation Systems

Skotnicka-Siepsiak

2020

Energies

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“…Pistikopoulos et al 5 address integrated production and maintenance planning using a nondecreasing piecewise constant function to model degradation. Similar approaches have been applied to heat exchanger networks, 6 biopharmaceutical manufacturing processes, 7 compressor networks, 8 building HVAC systems, 9 and so forth. Depending on the application, maintenance needs to be considered at various time scales.…”

Section: Introductionmentioning

confidence: 99%

Multistage distributionally robust optimization for integrated production and maintenance scheduling

Feng

Zhang

2021

AIChE Journal

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In chemical manufacturing processes, equipment degradation can have a significant impact on process performance or cause unit failures that result in considerable downtime. Hence, maintenance planning is an important consideration, and there have been increased efforts in scheduling production and maintenance operations jointly. In this context, one major challenge is the inherent uncertainty in predictive equipment health models. In particular, the probability distribution associated with the stochasticity in such models is often difficult to estimate and hence not known exactly. In this work, we apply a distributionally robust optimization (DRO) approach to address this problem. Specifically, the proposed formulation optimizes the worst‐case expected outcome with respect to a Wasserstein ambiguity set, and we apply a decision rule approach that allows multistage mixed‐integer recourse. Computational experiments, including a real‐world industrial case study, are conducted, where the results demonstrate the significant benefits from binary recourse and DRO in terms of solution quality.

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“…Although these problems are traceable to the extended response time of the biomass boilers when compared to the gas or coal fired boilers. Thus, some of the causes of the shutdown could be inadequate design of the hardware, installation and the overlay reactive control [45][46][47]. In the same vein, fouling is another challenge associated with the boiler.…”

Section: Condition Monitoring and Reliability Assessment Of Boilermentioning

confidence: 99%

Condition monitoring and reliability assessment, an essential tool for Boiler Plant Maintenance - A review

Salawu,

Akerekan,

Afolalu

et al. 2023

E3S Web Conf.

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Condition monitoring is an essential technique which is usually deployed to monitor the health parameters and conditions of a boiler plant in such a way that variations or significant changes can like failure can be identified and proffer adequate solutions to it. It is an important aspect of condition-based maintenance which is used in maintaining an equipment according to its conditions. Thus, this study focused on the fundamental principles of condition monitoring which involve the identification and selection of a physical measurement that will show the deterioration stage and the importance of taking the readings at intervals. More so, the study established that monitoring and measurement should focus more at critical components that have high frequency of failure. Thus, condition-based maintenance of boilers will help in improving the ,availability of the boiler.

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Predictive maintenance scheduling optimization of building heating, ventilation, and air conditioning systems

Cited by 23 publications

References 22 publications

The Applicability of Coanda Effect Hysteresis for Designing Unsteady Ventilation Systems

The Applicability of Coanda Effect Hysteresis for Designing Unsteady Ventilation Systems

Multistage distributionally robust optimization for integrated production and maintenance scheduling

Condition monitoring and reliability assessment, an essential tool for Boiler Plant Maintenance - A review

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