Identifying buildings with rising electricity-consumption and those with high energy-saving potential for government's management by data mining approaches

Air-conditioning systems contribute the most to energy consumption among building equipment. Hence, energy saving for air-conditioning systems would be the essence of reducing building energy consumption. The conventional energy-saving diagnosis method through observation, test, and identification (OTI) has several drawbacks such as time consumption and narrow focus. To overcome these problems, this study proposed a systematic method for energy-saving diagnosis in air-conditioning systems based on data mining. The method mainly includes seven steps: (1) data collection, (2) data preprocessing, (3) recognition of variable-speed equipment, (4) recognition of system operation mode, (5) regression analysis of energy consumption data, (6) constraints analysis of system running, and (7) energy-saving potential analysis. A case study with a complicated air-conditioning system coupled with an ice storage system demonstrated the effectiveness of the proposed method. Compared with the traditional OTI method, the data-mining-based method can provide a more comprehensive analysis of energy-saving potential with less time cost, although it strongly relies on data quality in all steps and lacks flexibility for diagnosing specific equipment for energy-saving potential analysis. The results can deepen the understanding of the operating data characteristics of air-conditioning systems.

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The Design and Implementation of Building Energy Saving Potential Online Diagnosis Method Based on Data Mining Techniques

2016 International Conference on Intelligent Transportation, Big Data & Smart City (ICITBS) ◽

10.1109/icitbs.2016.41 ◽

2016 ◽

Author(s):

Liu Jianwei

Keyword(s):

Data Mining ◽

Energy Saving ◽

Building Energy ◽

Data Mining Techniques ◽

Energy Saving Potential ◽

Design And Implementation ◽

Diagnosis Method ◽

Building Energy Saving

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Research on the Energy Saving Potential of Official Cars in China

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.128-129.1217 ◽

2011 ◽

Vol 128-129 ◽

pp. 1217-1221

Author(s):

Quan Le Liu ◽

Wei Chen

Keyword(s):

Energy Consumption ◽

Energy Saving ◽

Fuel Efficiency ◽

High Energy ◽

Maintenance Cost ◽

Strategy Method ◽

Energy Saving Potential ◽

Energy Consuming

The quantity of official cars increased with the speed exceeding 20% every year which need much more energy be consumed to meet the official car needs. To investigate the energy saving potential of official cars in China, This paper introduced the strategy method with systemic viewpoint to reduce official cars energy consumption through analyzing the reason of high energy consuming of official cars. The resulted showed that only reduce the quantities and maintenance cost, and decline the displacement and using frequency can realize fuel efficiency of official cars.

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ORGANIZATION OF THE ENERGY MANAGEMENT SYSTEM ON THE BASIS OF THE UNIVERSITY KNOWLEDGE HUB

Management ◽

10.30857/2415-3206.2021.1.9 ◽

2021 ◽

Vol 33 (1) ◽

pp. 94-104

Author(s):

Оlena Nifatova

Keyword(s):

Energy Efficiency ◽

Energy Consumption ◽

Energy Saving ◽

Electricity Consumption ◽

High Energy ◽

Multiple Regression Equation ◽

Process Data ◽

Factors Affecting ◽

Main Factors ◽

The University

BACKGROUND AND OBJECTIVES. Energy efficiency and energy saving are the priority direction of science, technology and engineering development in Ukraine. The policy of energy saving, carried out all over the world, is directed to all branches and scientific researches in all spheres. The big consumer of energy resources is the higher school. Updating of normative-legal and technical base aimed at design and operation of buildings with low energy consumption and high energy efficiency class shows the necessity of short-term solution of the problem. At the same time, there is a lack of a systemic view of energy efficiency, which does not allow evaluating the level of energy costs throughout the life cycle of higher education institutions, which shows the need to find effective solutions to the problem.METHODS. Multiple regression equation was used to assess the influence of factors on electricity consumption and energy efficiency of Kyiv National University of Technologies and Design, statistical analysis of the obtained data was performed.FINDINGS. As a result it was found out that the data of electricity consumption do not obey the law of normal distribution, so it is difficult to build an accurate prediction of electricity consumption. The use of HAB knowledge on energy efficiency allowed a more qualitative analysis and highlighted the main factors affecting electricity consumption. The university has unregulated central heating, individual air conditioning systems, and central and individual lighting. In this regard, we selected the following main factors: average outdoor air temperature, average duration of daylight hours, heating period, average number of people working per day, during the month to conduct energy monitoring and energy audit of university buildings.CONCLUSION. Implementation of suggested scheme of structural organization of typical system of automatic accounting of university energy consumption on the basis of university HUB of energy efficiency knowledge: server, allowing to collect, store and process data; routers by means of various wire and wireless communication technologies; hubs, installed on the objects of energy consumption; workstations, which are personal computers with installed software of used HUB will allow to optimize energy consumption.

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Technical economic model of energy utilization and energy saving for central heating system

Thermal Science ◽

10.2298/tsci2104113g ◽

2021 ◽

Vol 25 (4 Part B) ◽

pp. 3113-3121

Author(s):

Guojing Geng ◽

Xianzhe Li

Keyword(s):

Energy Saving ◽

Economic Model ◽

Heating System ◽

High Energy ◽

Energy Utilization ◽

Utilization Rate ◽

Heating Method ◽

Energy Saving Potential ◽

Central Heating ◽

Exergy Balance

Chinese heating method has gradually shifted from small fragments to centralized regional heating. This heating method has achieved obvious energy-saving benefits. The article establishes an economic model of the energy utilization rate of the central heating system and installs the system exergy balance equation at the same time. The simulation found that the energy utilization coefficient of the heating system is high and has a high energy-saving potential. The effect of energy utilization is poor, and it has great potential for energy saving.

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Systematic Method for the Energy-Saving Potential Calculation of Air Conditioning Systems via Data Mining. Part II: A Detailed Case Study

Energies ◽

10.3390/en14010086 ◽

2020 ◽

Vol 14 (1) ◽

pp. 86

Author(s):

Rongjiang Ma ◽

Shen Yang ◽

Xianlin Wang ◽

Xi-Cheng Wang ◽

Ming Shan ◽

...

Keyword(s):

Data Mining ◽

Energy Saving ◽

Air Conditioning ◽

Cost Savings ◽

Systematic Method ◽

Efficient Operation ◽

Energy Saving Potential ◽

Detailed Case ◽

Air Conditioning Systems

Increased data monitoring enables the energy-efficient operation of air-conditioning systems via data-mining. The latter is projected to have lesser consumption but more comprehensive diagnosis than traditional methods. Following the companion paper that proposed a systematic method for energy-saving potential calculations via data-mining, this article presents a detailed case study in an ice-storage air-conditioning system by employing the proposed method. Raw data were preprocessed prior to recognizing the constant- and variable-speed devices in the system. Classification and regression tree algorithms were utilized to identify the operating modes of the system. The regression models between the energy-consumption and operating-state parameters of the nine pumps and two chillers were fitted. Furthermore, the constraints pertaining to system operation were summarized. From the results, the particle swarm optimization method was applied to elucidate the benchmark energy cost and the consequent cost savings potential. The cost savings potential for the chiller plant room during the investigation duration of 59 d reached as high as 24.03%. The case study demonstrates the feasibility, effectiveness, and stability of the systematic approach. Further studies can facilitate the development of corresponding control strategies based on the potential analysis results, to investigate better optimization algorithm, and visualize the analysis process.

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Installation Design and Energy Conservation Analysis of Floor Radiant Cooling/Heating System with Solar Energy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.594-597.2146 ◽

2012 ◽

Vol 594-597 ◽

pp. 2146-2153 ◽

Cited By ~ 1

Author(s):

Qi Fen Li ◽

Tao Li ◽

Wei Dong Sun ◽

Zhi Tian Zhou ◽

Cui Cui Pan ◽

...

Keyword(s):

Energy Consumption ◽

Energy Saving ◽

Air Conditioning ◽

Energy Savings ◽

Heating System ◽

High Energy ◽

Primary Energy ◽

Energy Saving Potential ◽

Radiant Cooling ◽

New Energy

How to reduce the energy consumption of air conditioning, to use new energy such as solar appropriately, and to achieve energy savings, are the problems must be treated in HVAC industry. Because of the high energy consumption of traditional air-conditioning and the need for reduction of emission, an air conditioning system (utilizing solar dehumidifying applied to heating/cooling radiant floor) is designed and installed in this paper. At the same time, as an example, the energy saving potential of system is analyzed. This type of heating/cooling radiant floor system is worth promoted if solve the dehumidification properly. By separating to deal with heat and moisture can reduce the energy-cost of traditional air-conditioning, and to achieve purposes of primary energy saving.

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Investigation of Existing Situation and Study on Energy-Saving Potential of Rural Residential Buildings in Pearl River Delta

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.374-377.199 ◽

2011 ◽

Vol 374-377 ◽

pp. 199-203

Author(s):

Ting Ting Li ◽

Li Hua Zhao

Keyword(s):

Energy Consumption ◽

Energy Saving ◽

Pearl River Delta ◽

Residential Buildings ◽

High Energy ◽

Building Envelope ◽

River Delta ◽

Pearl River ◽

Brick Wall ◽

Energy Saving Potential

The rapid development of rural economy has led the massive construction of rural dwellings, while the energy consumption is increasing correspondingly. A field study was carried out in local nine villages of Pearl River Delta, aims to look into actual conditions of rural residential buildings and explore the energy-saving potential, a detailed questionnaire survey was conducted as well to investigate the construction of rural dwellings and the influencing factors in design. The results of this investigation, which focused on dwellings built by residents, revealed that the built form of dwellings is generally Low-rise house, the average storey height ranges from 3.6 to 4 meters. The primary building envelope is 200 cm clay brick wall construction, and not insulated flat roofing, moreover, the high energy consumption of increasing multistorey dwellings has drawn attention.

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