scholarly journals Lighting control network based on KNX protocol, for the reduction of energy consumption

2020 ◽  
Vol 19 (3) ◽  
pp. 1186
Author(s):  
Omar Chamorro Atalaya ◽  
Angel Quesquen-Porras ◽  
Dora Arce Santillan
Keyword(s):  
Energy Consumption ◽  
Network Architecture ◽  
Electricity Consumption ◽  
Environmental Benefits ◽  
Control Network ◽  
Commercial Building ◽  
Lighting Control ◽  
Reduction Of Energy Consumption ◽  
Carbon Dioxide Co2 ◽  
Air Conditioning Systems

<span>This article presents the development of a lighting control network to reduce the energy consumption of a commercial building, using the KNX protocol; because of the high rates of electricity consumption, the same that are reflected in the payment of the electricity supply. For this, the design of the network architecture is carried out, the tree type quality and it has KNX, DALI components and LED luminaires, which are interconnected by means of an Ethernet type BUS; The KNX protocol configuration is then performed using the ETS version 5 software; carries out the implementation of KNX technology, determines the reduction of energy consumption by 82.33%. Likewise, emissions of carbon dioxide (CO2), one of the main gases involved in climate change, were reduced by 85%. With these results we obtain economic and environmental benefits; Reason why it is proposed to perform the same procedure for the control of air conditioning systems, since their operation represents 32.8% of the energy consumption of an establishment.</span>

A Glance on Radiant Cooling Technology for Heating and Cooling for Residential and Commercial Building Application

2020 ◽  
Vol 07 (3&4) ◽  
pp. 13-19
Author(s):  
Shubham S Kulkarni ◽  
Keyword(s):  
Energy Consumption ◽  
Life Cycle Cost ◽  
Cooling System ◽  
Radiant Heating ◽  
Commercial Building ◽  
Heating And Cooling ◽  
Radiant Cooling ◽  
Air Conditioning Systems ◽  
Increasing Temperature ◽  
Chilled Ceiling

As we know that nowadays due to the hot and humid weather and the increasing temperature the high amount of energy consumption is used for the heating & cooling purpose in residential as well as in commercial building for air conditioning systems. To overcome this problem and to reduce the energy consumption as well as good thermal comfort to people in the indoor environment, use the radiant heating & cooling system is a better way. This concept is used to cool or heat the room and absorbs the indoor sensible heat by thermal radiation. The system removes heat by using less energy and more energy-efficient. This system uses water as a medium to cool or heat the room space. There are three types discussed in these papers for cooling & heating. In this paper, we did an overall study regarding radiant heating and cooling systems. It reduces the energy lost due to the duct leakage. It also has a lower life cycle cost compared to conventional. In this paper, we have reviewed how to reduce energy consumption and give thermal comfortable air-condition through radiant cooling and chilled ceiling panel system.

scholarly journals Industrial Facility Electricity Consumption Forecast Using Artificial Neural Networks and Incremental Learning

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4774
Author(s):  
Daniel Ramos ◽  
Pedro Faria ◽  
Zita Vale ◽  
João Mourinho ◽  
Regina Correia
Keyword(s):  
Energy Consumption ◽  
Energy Management ◽  
Incremental Learning ◽  
Forecast Accuracy ◽  
Electricity Consumption ◽  
Relevant Information ◽  
Industrial Facility ◽  
Artificial Neural ◽  
Reduction Of Energy Consumption ◽  
Artificial Neural Network Ann

Society’s concerns with electricity consumption have motivated researchers to improve on the way that energy consumption management is done. The reduction of energy consumption and the optimization of energy management are, therefore, two major aspects to be considered. Additionally, load forecast provides relevant information with the support of historical data allowing an enhanced energy management, allowing energy costs reduction. In this paper, the proposed consumption forecast methodology uses an Artificial Neural Network (ANN) and incremental learning to increase the forecast accuracy. The ANN is retrained daily, providing an updated forecasting model. The case study uses 16 months of data, split in 5-min periods, from a real industrial facility. The advantages of using the proposed method are illustrated with the numerical results.

Caracterización de sistemas de enfriamiento evaporativo indirecto en cubiertas para obtener confort higrotérmico en edificaciones en climas cálido-húmedos

2020 ◽  
Author(s):  
◽  
Eréndira Anais Carrillo Salas
Keyword(s):  
Energy Consumption ◽  
Architectural Design ◽  
Electricity Consumption ◽  
Coconut Oil ◽  
Climate Conditions ◽  
Cooling Strategies ◽  
Physical Scale ◽  
Reduce Energy Consumption ◽  
Conducting Research ◽  
Air Conditioning Systems

In the area of architectural design, the current environmental problem in the world due to global warming because of the high consumption of conventional energy has generated concern for conducting research, where the main objective is to reduce energy consumption. In the Mexican Republic, 88% of electricity consumption is provided to the residential sector and is mainly used in air conditioning systems, since 27% of the country has hot or tropical climate conditions. The bioclimatic architectural design allows, through passive systems, to provide comfort conditions inside the buildings without the use of active systems and, in the case of hot climates, there are different techniques to obtain cooling in living spaces. This research addresses passive cooling techniques to reduce energy consumption in hot-humid climates where the objective was to characterize different indirect evaporative cooling strategies. The work was carried out in the City of Merida on physical scale models where different cooling strategies were implemented in the roof based on the roof-pond system, modifying the materials. In Experiment 1 water was used and in Experiment 2 a phase change material (coconut oil) encapsulated in a 6 mm polycarbonate plate was placed. Measurements were made for 20 days in periods of low and overheating; and in the case of coconut oil, the most unfavorable period was considered, the period of overheating. The results showed that the five cooling systems, both with the use of water and with encapsulated coconut oil, showed a reduction of the TBS inside the investigated spaces. Module 5 however is the experiment that showed the best results reducing its DBT by 3.7 K (water) and 4.9 K (coconut oil).

scholarly journals Carbon dioxide as the replacement for synthetic refrigerants in mobile air conditioning

2008 ◽  
Vol 12 (3) ◽  
pp. 55-64 ◽  
Author(s):  
Dragi Antonijevic
Keyword(s):  
Carbon Dioxide ◽  
Heat Pump ◽  
Automotive Industry ◽  
System Performance ◽  
Air Conditioning ◽  
Environmental Benefits ◽  
Refrigeration Cycle ◽  
Co2 Utilization ◽  
Carbon Dioxide Co2 ◽  
Air Conditioning Systems

Based on Kyoto Protocol and the decisions of European Commission R134a refrigerant, currently dominantly used in mobile air conditioning systems, needs to be phased-out. At present automotive industry looks at carbon dioxide (CO2; R744) as the refrigerant of the future. Apart from the environmental benefits discussed are the technical characteristics of carbon dioxide refrigeration cycle and mobile air-conditioning systems in comparison to R134a refrigerant. Analyzed are challenges emerged from the use of CO2 as refrigerant and improvement opportunities in regards to increase of the system performance and efficiency. Particular attention is dedicated to the advantages of CO2 utilization in prospective automotive heat pump systems.

Daylighting and energy performance design for single floor commercial hall buildings

2018 ◽  
Vol 29 (4) ◽  
pp. 722-739 ◽  
Author(s):  
Francesco De Luca ◽  
Raimo Simson ◽  
Hendrik Voll ◽  
Jarek Kurnitski
Keyword(s):  
Energy Consumption ◽  
Energy Performance ◽  
Cold Climate ◽  
Light Energy ◽  
Light Sources ◽  
Commercial Building ◽  
Content Type ◽  
Artificial Lighting ◽  
Lighting Control ◽  
Electric Light

Purpose Electric lighting accounts for a large share of energy consumption in commercial buildings. Utilization of daylight can significantly help to reduce the need for artificial lighting, increase workers productivity, customers’ satisfaction and consequently improve sales. However, excessive use of glazing and absence of lighting controls can contribute greatly to higher energy need for heating and cooling and cause undesired glare effects. Thus, optimizing the size, position and materials of external glazing, with the addition of deflectors and dynamic artificial lighting, can become key aspects in the design of sustainable low energy buildings. The purpose of this paper is to analyze daylight potential and energy performance of a hall-type commercial building, situated in the cold climate of Finland, by utilizing different combinations of skylights, windows and lighting controls. Design/methodology/approach The authors have used computer simulations to estimate daylight and energy performance of a single floor commercial building in relation to various combinations of skylights and windows with variable glazing materials, light deflectors and zonal lighting controls. Findings The results show that electric light energy saving potential ranges from a negligible 1.9 percent to a significant 58.6 percent in the case of glass skylights and wall windows using multi-zone lighting control. Total delivered energy ranges between increase of 1.5 and 21.2 percent in the cases with single zone lighting control and between decrease of 4.5 percent and increase of 4.5 percent in the cases with multi-zone control. The highest decrease in primary energy consumption was 2.2 percent for single zone and 17.6 percent for multi-zone lighting control. The research underlines the significant potential of electric light energy savings using daylighting strategies that, including the control of direct solar access for glare and internal gains, can be more than 50 percent. Originality/value This research combines accurate daylight and energy assessment for commercial hall buildings based in cold climate region with multiple design variations. The novelty of this work is the consideration of interior elements, shelves and deflectors, in the calculations. This is made possible through the combined use of validated simulation platforms for detailed annual daylighting and electric lighting calculation (Radiance and Daysim) and energy analysis (IDA-ICE, Equa Simulation AB). This method allows to obtain a reliable assessment of the potential of using natural light sources in buildings.

scholarly journals Recognition of Variable-Speed Equipment in an Air-Conditioning System Using Numerical Analysis of Energy-Consumption Data

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4975 ◽  
Author(s):  
Rongjiang Ma ◽  
Xianlin Wang ◽  
Ming Shan ◽  
Nanyang Yu ◽  
Shen Yang
Keyword(s):  
Data Mining ◽  
Energy Consumption ◽  
Air Conditioning ◽  
Constant Speed ◽  
Variable Speed ◽  
Commercial Building ◽  
Total Energy Consumption ◽  
Air Conditioning System ◽  
Consumption Data ◽  
Air Conditioning Systems

Motor-driven equipment (ME) is one of the key components in an air-conditioning system, which contributes to the vast majority of the total energy consumption by air-conditioning systems. Distinguishing variable- and constant-speed equipment is important since the energy simulation models of the two types differ. Traditionally, types of ME are known in advance, and energy consumption data are consequently analyzed. However, in the application scenarios of energy consumption data mining, precedent information on the ME type could be missing. Thus, this study applies this process in reverse, providing new insight into energy consumption data of ME to recognize variable-speed ME in an air-conditioning system. The energy consumption data of ME in an air-conditioning system implemented in a commercial building were collected and numerically analyzed. A proposed simple parameter, coefficient of the median, and several numerical parameters were calculated and used to distinguish variable- from constant-speed ME. Results showed that the energy consumption data distributions of the two types of ME differed. The proposed coefficient of the median could successfully distinguish variable- from constant-speed ME, and it could be applied as an important step in energy consumption data mining of air-conditioning systems.

scholarly journals A Comparative Analysis of Energy Consumption by Conventional and Anchor Based Dynamic Positioning of Ship

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 524
Author(s):  
Andrzej Łebkowski ◽  
Jakub Wnorowski
Keyword(s):  
Energy Consumption ◽  
Electricity Consumption ◽  
Design Stage ◽  
Dynamic Positioning ◽  
Positioning Systems ◽  
Dynamic Positioning System ◽  
The Matrix ◽  
Carbon Dioxide Co2 ◽  
Hydrometeorological Conditions ◽  
Made In

One of the requirements for ships equipped with dynamic positioning system is the ability to maintain a given position in various hydrometeorological conditions. At the same time, efforts at reducing electricity consumption are made in order to reduce operating costs and emissions of exhaust gases, such as sulfur oxides and greenhouse gases such as carbon dioxide (CO2). For this purpose, the ship designer at the design stage must predict both how much energy the ship will theoretically use during operation and how the expenditure can be reduced. The publication presents a comparison of energy consumption with two different approaches to ship positioning: the use of classic dynamic positioning utilizing a set of thrusters and by using a set of anchors. In order to determine the energy consumption during positioning, the matrix method was used, on the basis of which the analysis of the ability to hold the position of the ship (capability plot) was performed, in accordance with the recommendations of the classification society DNV GL. Thanks to this analysis, it was possible to find such a distribution of thrust vectors on propulsors that the ship would not lose its set position under the hydrometeorological conditions specified in the analysis. As a result of comparing the two positioning systems, it turned out that using anchor-based positioning uses 24% less energy than positioning based on a set of thrusters, which translates into 24% less CO2 emissions into the atmosphere.

scholarly journals DETERMINING BARRIERS IN SUSTAINABLE REFURBISHMENT PROJECTS: COMMERCIAL BUILDING OWNER PERSPECTIVES

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Md Asrul Nasid Masrom ◽  
Mohd Hilmi Izwan Abd Rahim ◽  
Siow Chan Ann ◽  
Sulzakimin Mohamed ◽  
Kai Chen Goh ◽  
...  
Keyword(s):  
Qualitative Data ◽  
Electricity Consumption ◽  
Green Building ◽  
Commercial Buildings ◽  
Environmental Benefits ◽  
Commercial Building ◽  
Great Opportunity ◽  
Semistructured Interviews ◽  
Reduce Carbon Dioxide ◽  
Building Owner

Existing commercial buildings in Malaysia account for one third of the total electricity consumption. They present a great opportunity for refurbishment to reduce carbon dioxide. However, sustainably refurbished commercial buildings that is Green Building Index (GBI) certified is still low. This study aims to investigate barriers that impede commercial building owners to implement sustainable refurbishment and explore ways to increase numbers of sustainable refurbishment implementation. Qualitative data were collected through semistructured interviews. The respondents were commercial building owners’ representative, who were mainly building managers. The findings indicated that higher cost of sustainable refurbishment than conventional method and lacking of sustainability awareness among Malaysian were the main barriers of sustainable refurbishment. This study will be useful in helping building owners and developers to enhance economic, social and environmental benefits of sustainable refurbishment.

scholarly journals Technical-Economic Evaluation of the Effectiveness of Measures Applied to the Artificial Lighting System of a School

2021 ◽  
Vol 11 (14) ◽  
pp. 6664
Author(s):  
Cristina Baglivo ◽  
Marina Bonomolo ◽  
Paolo Maria Congedo ◽  
Marco Beccali ◽  
Simona Antonaci
Keyword(s):  
Energy Consumption ◽  
Electricity Consumption ◽  
Well Being ◽  
Lighting System ◽  
Artificial Lighting ◽  
Local Schools ◽  
Current State ◽  
Visual Tasks ◽  
Reduction Of Energy Consumption ◽  
Google Sketchup

Ensuring optimum interior lighting is a topic of great importance, as this influences not only the well-being of users but also the optimal performance of visual tasks. Lighting can be natural, but if not sufficient, it can be compensated with artificial lighting. This study highlights a methodology for designing a new lighting system that takes into account both technical and economic aspects. The method was applied to an existing school located in southern Italy, in which the electricity consumption is related to the current lighting system. The school is chosen as being representative of the construction type and layout of many local schools. In addition, the coexistence of several visual tasks with different design requisites (e.g., illuminance levels) makes the school a very complex environment. The school lighting is modelled in Google SketchUp and imported into Daysim to simulate the yearly and hourly daylight indoor contribution. Dialux Evo has been used to simulate and design artificial lighting. The results show a reduction of energy consumption of 33% with the simple replacement of fluorescent luminaires with LEDs, while the LED lamp dimming and modulation for rows of luminaires leads to a 95% reduction in energy consumption compared with the current state.

scholarly journals Investigation of the use of various materials for the construction of an enthalpy exchanger

2020 ◽  
Vol 15 (2) ◽  
pp. 75-94
Author(s):  
Pavol Kozák ◽  
Danica Košičanová
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Energy Intensity ◽  
Primary Sources ◽  
Large Fluctuations ◽  
Different Types ◽  
Reduction Of Energy Consumption ◽  
Air Conditioning Systems ◽  
Reducing Energy

AbstractConsidering the current gradual depletion of non-renewable primary sources, it is necessary to address the reduction of energy consumption in ventilation and air conditioning systems. Although heat recovery alone reduces the energy intensity of these systems, if moisture recovery is considered as well, the contribution in reducing energy consumption is significant. These are mainly the devices designed primarily for spaces where people stay permanently, which do not allow large fluctuations in temperature and humidity. In cooperation with the manufacturer of heat recovery exchangers, we determined our own method of comparing different types of materials that could be used to design an exchanger which would also allow moisture recovery. These results in a significant reduction in energy consumption used to humidify the air in ventilation and air conditioning systems. It is one of the possible ways how to compare individual samples that are being measured. This article primarily deals with the comparison of three different types of materials, out of the total number of twelve measured samples.

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