Data analytics to improve building performance: A critical review

HB Gunay, W Shen, G Newsham - Automation in Construction, 2019 - Elsevier
The data inherent in building automation systems, computerized maintenance management
systems, security and access control systems, and IT networks represent an untapped …

Soft metrology based on machine learning: a review

M Vallejo, C De La Espriella… - Measurement …, 2019 - iopscience.iop.org
Soft metrology has been defined as a set of measurement techniques and models that allow
the objective quantification of properties usually determined by human perception such as …

Estimating energy savings from HVAC controls fault correction through inverse greybox model-based virtual metering

B Gunay, BW Hobson, D Darwazeh, J Bursill - Energy and Buildings, 2023 - Elsevier
Fault impact analysis is an important phase of fault detection and diagnosis (FDD), enabling
prioritization of the faults detected and allocation of resources to procure services and …

Disaggregation of commercial building end-uses with automation system data

HB Gunay, Z Shi, I Wilton, J Bursill - Energy and Buildings, 2020 - Elsevier
While understanding end-uses and their flow within a building is essential for energy
management, many existing buildings still do not have adequate submetering for important …

Automated fault detection and diagnosis of airflow and refrigerant charge faults in residential HVAC systems using IoT-enabled measurements

KA Ejenakevwe, J Wang, Y Jiang, L Song… - … and Technology for the …, 2023 - Taylor & Francis
While automated fault detection and diagnosis (AFDD) in residential heating, ventilation,
and air-conditioning (HVAC) using smart thermostat data is gaining increasing attention in …

Towards integration of virtual meters into building energy management systems: Development and assessment of thermal meters for cooling

E Saloux, K Zhang - Journal of Building Engineering, 2023 - Elsevier
The increasing availability of sub-hourly operational data represents an untapped
opportunity to help better manage and operate buildings. However, specific variables may …

Development of inverse greybox model-based virtual meters for air handling units

D Darwazeh, B Gunay… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Energy submetering at the equipment level provides a tool to identify energy use anomalies
and detect operational inefficiencies. While physical meters can be costly and difficult to …

Research on the measuring characteristics of a new design butterfly valve flowmeter

Y Mu, M Liu, Z Ma - Flow Measurement and Instrumentation, 2019 - Elsevier
Flowmeters and control valves are important components of flow measurement and control
in heating, ventilating, and air conditioning (HVAC) system, which directly or indirectly …

[HTML][HTML] Low delta-T syndrome in cooling systems: A systematic review of the signs, symptoms, and causes

A van den Brink, S Walker, R Kramer… - Applied Thermal …, 2024 - Elsevier
Return water temperature and flow rate are indicators of the energy efficiency of chilled
water systems. Since the late 1980s, the return water temperature has deviated from the …

Quantifying energy losses in hot water reheat systems

P Raftery, A Geronazzo, H Cheng, G Paliaga - Energy and Buildings, 2018 - Elsevier
We developed a new method to estimate useful versus wasted hot water reheat energy
using data obtained from typically installed instrumentation that applies to all pressure …