Analysis and Assessment of Energy Efficiency of Passenger Lifts

Krakowski, Tomasz; Ruta, Hubert

doi:10.12913/22998624/95165

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…number of trips, running time, standby time, average travel distance, average car load, load factor, time ratios of standby mode). Such approach in case of some devices may lead to inadequate and not reliable energy consumption value (Tukia et al 2016a;Krakowski and Ruta 2018) which in consequence leads to inaccurate energy efficiency classification. More accurate methods of establishing energy consumption of elevators are proposed by other authors, for example Tukia et al 2016a rely on measuring the energy consumption of most prevailing day types and linearly extrapolating the annual consumption.…”

Section: Energy Consumption Comparison and Discussionmentioning

confidence: 99%

Application of fuzzy logic in lift energy efficiency classification

Krakowski

Ruta

2019

Energy Efficiency

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The study outlines a new approach to lift energy efficiency classification based on a heuristic estimator using the energy performance parameters of a lift installation registered over its weekly duty cycle. Due to the fact that evaluations of the energy performance by commonly applied methods involve a number of variables and complex nonlinear dependencies, the expert model is developed using the fuzzy logic approach. The underlying objectives are defined alongside the energy performance and operating parameters of a lift installation during the ride and in the standby mode. The estimator is based on the operational equipment effectiveness for each mode of lift operation and membership functions (model input and output) are defined. The method was verified by measurements taken on a real object. This study summarises the measurement results and lift energy classification data obtained by the new method, the final results are presented in figures illustrating the energy efficiency variations in the running mode and as the average energy efficiency ratings on each day and over the whole week.

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Section: Energy Consumption Comparison and Discussionmentioning

confidence: 99%

Application of fuzzy logic in lift energy efficiency classification

Krakowski

Ruta

2019

Energy Efficiency

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“…Due to the problems of the traction wheel and the wire rope slippage causing excessive wear and tear, the image processing technique has been adapted to detect wire rope slippage, which can enhance safety usage and reduce energy consumption [28]. To establish the energy efficiency rating of an elevator installation with sufficient confidence, the energy performance and operating parameters must be measured under normal service conditions [29]. Interestingly, the occupancy behaviour is inherently complex and stochastic, making it difficult to accurately describe or predict building energy performance [30].…”

Section: Introductionmentioning

confidence: 99%

Vertical Transportation System Power Usage: Behavioural Case Study of Regulated Buildings in Bangkok

2022

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Sustainable urban development worldwide is crucial for the development of living spaces in high-rise buildings and infrastructures, which leads to the inevitability of increased energy consumption and demand of vertical transportation systems. The evaluation of the energy consumption of transportation systems is needed to verify and analyse the power usage related to traffic demands and patterns. In addition, efficient vertical transportation systems are central to the formulation of more sustainable cities. Therefore, this trend represents a substantial portion of the overall energy consumption of the building types. The benchmarking of the energy needs of the vertical transportation systems in five different building types via the comparison of granular load profile patterns (in conjunction with population densities) to the energy consumed was conducted, and it will be used to infer some impactful design strategies for the future. This study demonstrated a systematic approach to determine the power usage patterns in vertical transportation systems by actual measurement and traffic data collection from elevator monitoring. This may be used to develop a prediction for other cases in different types of installed vertical transportation systems. Therefore, the power usage of the vertical transportation systems can be used to determine the correlation between energy consumption and load pattern based on building characteristics and the overall energy consumption of each presented system.

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Diagnostics of operational wear in hybrid load-carrying cables

Krakowski

Molski

Ruta

et al. 2021

J. Phys.: Conf. Ser.

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Along with the development of lifting devices, the new hybrid load-carrying cables were introduced to the market. The solutions of this type covered both, steel ropes of circular section and belts being a hybrid combination of many steel ropes potted with plastic coating into a single flat friction belt. Such design of ropes as compared to the traditional round steel ropes enabled to reduce the drive wheel diameter while maintaining frictional contact conditions and required ratio of the drive wheel and load-carrying cable diameters that is at least 40. Despite the above-mentioned advantages, a research issue that is of interest but so far has not been fully investigated is the process of wear of the hybrid load-carrying cables and evaluation of the technical condition of ropes being the load-carrying elements in the applied solutions, especially during the long-term operation. This article presents the possibilities of applying the magnetic method for evaluation of the technical condition of steel ropes being the load-carrying element of hybrid belts. The authors have presented their solution of the measuring head for magnetic testing of the load-carrying hybrid cables, elaborated by the team of employees of the Department of Machine Engineering and Transport at University of Science and Technology in Cracow, that enables the quantitative assessment of the hybrid load-carrying cable wear.

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Analysis and Assessment of Energy Efficiency of Passenger Lifts

Cited by 5 publications

References 6 publications

Application of fuzzy logic in lift energy efficiency classification

Application of fuzzy logic in lift energy efficiency classification

Vertical Transportation System Power Usage: Behavioural Case Study of Regulated Buildings in Bangkok

Diagnostics of operational wear in hybrid load-carrying cables

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