From occupancy to occupant behavior: An analytical survey of data acquisition technologies, modeling methodologies and simulation coupling mechanisms for building energy efficiency

Jia, Mengda; Srinivasan, Ravi S.; Raheem, Adeeba A.

doi:10.1016/j.rser.2016.10.011

Cited by 215 publications

(104 citation statements)

References 63 publications

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“…(a) First one and the core is the interior cooling load calculation. Three relationships described in Equations (6)- (8) are the emphases. The relationships are formulated in the following sections based on the case study of three typical university buildings.…”

Section: Modeling and Uncertainty Estimation Of Building Cooling Loadmentioning

confidence: 99%

An Occupant-Oriented Calculation Method of Building Interior Cooling Load Design

et al. 2018

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Given continued improvement in the thermal performance of building envelopes, interior disturbances caused by occupant behavior now have the greatest impact on building loads and energy consumption. The accurate calculation of interior load during design stage was emphasized in this paper, and a new method was proposed. Indoor occupants were considered as the core of interior disturbances, and the relationship with other interior disturbances was explored. The interior heat release was arbitrarily combined with the representative cooling load to be utilized in building cooling load calculation. Field surveys were conducted in three typical university buildings: an office building, a teaching building, and a library, located in a university in Tianjin, China. The oversized chillers supplying cooling for the buildings resulted from the overestimating of the indoor occupant number and the power density of electric appliances. Through quantitative analysis, it was observed that the maximum representative interior loads were 196.43, 329.94, and 402.58 W/person, respectively, for the case buildings, at least 50% less than the empirical design data. Compared to the measured cooling load during the testing period, the accuracy of the modified cooling load was greater than 90%. This research is intended to serve as a reference for calculating and optimizing the design loads of cooling systems.

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Section: Modeling and Uncertainty Estimation Of Building Cooling Loadmentioning

confidence: 99%

An Occupant-Oriented Calculation Method of Building Interior Cooling Load Design

et al. 2018

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“…Generally, it was found out that older occupants need more heating energy, therefore, must preferably live in buildings with lower aspect ratio. A deep review of the available survey of occupant behavior modeling and the simulation state‐of‐the‐art methodologies is carried out in Re to show how the occupant behavior models can be included. In particular, the findings and potential development areas in the field of occupant behavior modeling for energy efficient buildings are summarized.…”

Section: Interaction Of Building Simulation With Other Thermal‐energymentioning

confidence: 99%

Uses of dynamic simulation to predict thermal‐energy performance of buildings and districts: a review

Castaldo

Pisello

2017

WIREs Energy & Environment

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The design of sustainable constructions also resilient to climate change has become a challenging issue given the increasing greenhouse emissions rate imputable to the built environment in urban areas. In this context, dynamic simulation models represent a suitable tool to support the design from very preliminary phases, since they allow an accurate prediction of the constructions requirements, their environmental performance, and indoor comfort conditions for their occupants. Therefore, starting from specific inputs, that is, weather conditions, construction technologies, materials, energy systems, operation settings, occupancy, and so forth, it is possible to estimate the realistic building energy performance. Moreover, the calibration procedures allow making the model even more representative of the field conditions of a construction. Given the massive progress carried out by the scientific community during the last decades, this paper presents a comprehensive review of the different building dynamic simulation approaches and available tools. While previous review studies focused on single separated aspects of dynamic simulations approaches, that is, calibration methods, software, simulation of single building energy systems, the aim of the present review is to propose a more holistic approach by investigating the recent scientific progress in simulating realistic dense urban environments. In this view, the review focus bridges the gap between the simulation at single-building level and simulation at the increasingly important neighborhood scale by showing the multiple benefits deriving from using dynamic simulation tools at district level, for a more reliable investigation of building performance in their urban context, where more than 50% of the global population worldwide currently lives.

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“…Electrical motors are not a unique problem regarding energy consumption and efficiency. There are also more complex systems such as modern data centers, where there are a lot of electrical motors (and highly energy consumption), because of environment control, cooling, air ventilating, and so on [4,5]. In order to solve these environmental problems, the minimum energy performance standards (MEPS) are enacted by regulating motor efficiency.…”

Section: Introductionmentioning

confidence: 99%

Study on Line-Start Permanent Magnet Assistance Synchronous Reluctance Motor for Improving Efficiency and Power Factor

Kim

Park

Liu³

et al. 2020

Energies

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In order to improve the efficiency, a line-start synchronous reluctance motor (LS-SynRM) is studied as an alternative to an induction motor (IM). However, because of the saliency characteristic of SynRM, LS-SynRM have a limited power factor. Therefore, to improve the efficiency and power factor of electric motors, we propose a line-start permanent magnet assistance synchronous reluctance motor (LS-PMA-SynRM) with permanent magnets inserted into LS-SynRM. IM and LS-SynRM are selected as reference models, whose performances are analyzed and compared with that of LS-PMA-SynRM using a finite element analysis. The performance of LS-PMA-SynRM is analyzed considering the position and length of its permanent magnet, as well as its manufacture. The final model of LS-PMA-SynRM is designed for improving the efficiency and power factor of electric motors compared with LS-SynRM. To verify the finite element analysis (FEA) result, the final model is manufactured, experiments are conducted, and the performance of LS-PMA-SynRM is verified.

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From occupancy to occupant behavior: An analytical survey of data acquisition technologies, modeling methodologies and simulation coupling mechanisms for building energy efficiency

Cited by 215 publications

References 63 publications

An Occupant-Oriented Calculation Method of Building Interior Cooling Load Design

An Occupant-Oriented Calculation Method of Building Interior Cooling Load Design

Uses of dynamic simulation to predict thermal‐energy performance of buildings and districts: a review

Study on Line-Start Permanent Magnet Assistance Synchronous Reluctance Motor for Improving Efficiency and Power Factor

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