Continuous IEQ monitoring system: Context and development

Parkinson, Thomas; Parkinson, Alex; Dear, Richard de

doi:10.1016/j.buildenv.2018.12.010

Cited by 119 publications

(84 citation statements)

References 47 publications

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“…It would be useful both for Energy and Buildings, March 2020 https://doi.org/10.1016/j.enbuild.2020.109805 https://escholarship.org/uc/item/43c525tg 3 research projects and for controlling the building systems that affect the air movement in buildings. A related monitoring application is 'desktop weather stations' that integrate air speed measurement together with other environmental parameters to continuously evaluate thermal comfort and indoor environmental quality [9][10][11].…”

Section: Measuring Indoor Air Movementmentioning

confidence: 99%

Measuring 3D indoor air velocity via an inexpensive low-power ultrasonic anemometer

Arens

Ghahramani

Przybyla

et al. 2020

Energy and Buildings

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The ability to inexpensively monitor indoor air speed and direction on a continuous basis would transform the control of environmental quality and energy use in buildings. Air motion transports energy, ventilation air, and pollutants around building interiors and their occupants, and measured feedback about it could be used in numerous ways to improve building operation. However indoor air movement is rarely monitored because of the expense and fragility of sensors. This paper describes a unique anemometer developed by the authors, that measures 3-dimensional air velocity for indoor environmental applications, leveraging new microelectromechanical systems (MEMS) technology for ultrasonic range-finding. The anemometer uses a tetrahedral arrangement of four transceivers, the smallest number able to capture a 3dimensional flow, that provides greater measurement redundancy than in existing anemometry. We describe the theory, hardware, and software of the anemometer, including algorithms that detect and eliminate shielding errors caused by the wakes from anemometer support struts. The anemometer has a resolution and starting threshold of 0.01m/s, an absolute air speed error of 0.05 m/s at a given orientation with minimal filtering, 3.1° angle-and 0.11m/s velocity errors over 360° azimuthal rotation, and 3.5° angle-and 0.07m/s velocity errors over 135° vertical declination. It includes radio connection to internet and is able to operate standalone for multiple years on a standard battery. The anemometer also measures temperature and has a compass and tilt sensor so that flow direction is globally referenced regardless of anemometer orientation. The retail cost of parts is $100 USD, and all parts snap together for ease of assembly.

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Section: Measuring Indoor Air Movementmentioning

confidence: 99%

Measuring 3D indoor air velocity via an inexpensive low-power ultrasonic anemometer

Arens

Ghahramani

Przybyla

et al. 2020

Energy and Buildings

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“…While a large community of scientists are tackling issues of low-cost air quality sensor calibration and operation, much less focus has been placed on improving low-cost sensor accuracy and availability for other IEQ factors. A recent publication series describes the design and performance of the SAMBA environmental monitoring platform, including reference instrument comparisons of air temperature, humidity, globe temperature, air velocity, CO 2 , carbon monoxide, particulate matter, formaldehyde, sound level, and illuminance [80,81]. Such comparisons are essential for validating IEQ measurement techniques.…”

Section: Statistical Summarymentioning

confidence: 99%

The Spatial and Temporal Variability of the Indoor Environmental Quality during Three Simulated Office Studies at a Living Lab

et al. 2019

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The living lab approach to building science research provides the ability to accurately monitor occupants and their environment and use the resulting data to evaluate the impact that various components of the built environment have on human comfort, health, and well-being. A hypothesized benefit of the living lab approach is the ability to simulate the real indoor environment in an experimentally controlled setting over relatively long periods of time, overcoming a significant hurdle encountered in many chamber-type experimental designs that rarely reflect typical indoor environments. Here, we present indoor environmental quality measurements from a network of sensors as well as building system design and operational data demonstrating the ability of a living lab to realistically simulate a wide range of environmental conditions in an office setting by varying air temperature, lighting, façade control, and sound masking in a series of three human subject experiments. The temporal variability of thermal and lighting conditions was assessed on an hourly basis and demonstrated the significant impact of façade design and control on desk-level measurements of both factors. Additional factors, such as desk layout and building system design (e.g., luminaires, speaker system), also contributed significantly to spatial variability in air temperature, lighting, and sound masking exposures, and this variability was reduced in latter experiments by optimizing desk layout and building system design. While ecologically valid experimental conditions are possible with a living lab, a compromise between realism and consistency in participant experience must often be found by, for example, using an atypical desk layout to reduce spatial variability in natural light exposure. Based on the experiences from these three studies, experimental design and environmental monitoring considerations for future office-based living lab experiments are explored.

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“…SAMBA is a recently released toolkit from the Indoor Environmental Quality Lab at the University of Sydney. It measures similar parameters and was designed for "continuous, real-time measurements of indoor environmental quality parameters from occupants' work desks" [4]. The main differentiator between the two devices is that the one described in this paper is developed on open source principles.…”

Section: Existing Toolkitsmentioning

confidence: 99%

A toolkit for low-cost thermal comfort sensing

Tyler

Bates

Friday

et al. 2019

Proceedings of the 6th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation

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Why is it that we can have standards on how to achieve comfort [5] and advanced building control systems to implement these standards, yet water cooler 'discussions' about how hot, cold, or generally uncomfortable it is, seem to form a backbone to modern office life [8]? In the UK, domestic space and water heating alone was approximately 80% of the country's total final energy in 2017 [9]. Through our heating and cooling infrastructures, we are consuming significant amounts of energy and pumping out growing amounts of carbon, only to achieve a state of further discontentment. Are we approaching this all wrong? To reduce our consumption significantly, we need new methods of understanding and achieving thermal comfort. To help achieve these new methods, this paper argues we need to look again at how we are currently collecting thermal comfort data. CCS CONCEPTS • Hardware → Impact on the environment; Temperature monitoring.

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Continuous IEQ monitoring system: Context and development

Cited by 119 publications

References 47 publications

Measuring 3D indoor air velocity via an inexpensive low-power ultrasonic anemometer

Measuring 3D indoor air velocity via an inexpensive low-power ultrasonic anemometer

The Spatial and Temporal Variability of the Indoor Environmental Quality during Three Simulated Office Studies at a Living Lab

A toolkit for low-cost thermal comfort sensing

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