scholarly journals Investigation and Evaluation of Energy Consumption Performance for Hospital Buildings in China

2019 ◽  
Vol 11 (6) ◽  
pp. 1724 ◽  
Author(s):  
Ru Ji ◽  
Shilin Qu
Keyword(s):  
Energy Consumption ◽  
Evaluation System ◽  
Energy Use ◽  
Energy Savings ◽  
Building Energy ◽  
Total Energy Consumption ◽  
Electricity Use ◽  
Hospital Building ◽  
Save Energy ◽  
Air Conditioning Systems

Energy use in hospitals is higher than other public buildings, so it is essential to investigate and evaluate its energy consumption performance to save energy. In this paper, a comprehensive investigation was conducted to study energy consumption of hospitals in China. The investigation results show that electricity use accounts for the maximum share in total energy consumption of hospitals, especially in south China. Improving air conditioning systems is the most direct and effective way for realizing hospital building energy savings. What’s more, a new evaluation system of energy-saving performance for hospital buildings was developed. This evaluation system could evaluate performance of energy use in hospital, find out the weakness of energy use, and provide improving suggestions. Furthermore, a kind of visual software was given by our paper, which can be used intuitively by practitioners to evaluate building energy consumption performance of a hospital.

Investigation on the Effect of Different Channel Geometries of Thermal Wheel for Energy Transfer Efficiency

2021 ◽  
Author(s):  
A.M.C.K. Polgolla ◽  
◽  
H.M.D.P. Herath ◽  
M.D.A. Wickramasinghe ◽  
M.A. Wijewardane ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Pressure Loss ◽  
Energy Savings ◽  
High Efficiency ◽  
The United States ◽  
Total Energy Consumption ◽  
Final Energy Consumption ◽  
Air Conditioning Systems ◽  
Air Streams

Inside buildings, heating, ventilation, and air conditioning systems are utilized to provide a comfortable environment. However, they account for a significant percentage of overall total energy consumption: in the United States, they account for about 50% of building final energy consumption and 20% of total energy consumption. [1]. The installation of a heat exchanger between the exhaust and fresh air streams is critical, owing to the significant energy savings. [2], [3]. Thermal wheels have recently gotten a lot of attention because of their high efficiency and low-pressure loss when compared to other energy recovery solutions [4]. The goal of this research is to give a comprehensive study and optimization of Thermal wheel design, with the goal of enhancing sensible effectiveness while reducing pressure loss based on channel shape.

Study on Analysis and Quota of Energy Consumption for Large Comprehensive Hospital Buildings in Shaanxi Province of China

2012 ◽  
Vol 512-515 ◽  
pp. 2817-2824 ◽  
Author(s):  
Yan Jun Li ◽  
Zeng Feng Yan
Keyword(s):  
Energy Consumption ◽  
Medical Devices ◽  
Indoor Environment ◽  
Electricity Consumption ◽  
Shaanxi Province ◽  
Total Energy Consumption ◽  
Medical Quality ◽  
Social And Economic Development ◽  
Hospital Building ◽  
Save Energy

As social and economic development in China，building scale and medical devices have greatly improved in hospitals, and patients and medical staff are requiring a more and more comfortable indoor environment. All these lead to rising energy consumption of hospital buildings. How to save energy and reduce consumption on the basis of keeping medical quality? This paper takes studies on energy consumption of hospitals in Shaanxi province. First of all, questionnaires about energy consumption of hospitals were carried out. Total energy consumption and electricity consumption were analyzed and energy consumption law was summarized. Then, quota principle and quota method of energy consumption were explored, and energy consumption quota of hospital buildings in Shaanxi province was established. This research contributes to energy-saving of hospital building and provides reference for other public buildings in Shaanxi province.

scholarly journals Integration of Natural and Artificial Light on Energy Efficiency of the Mega Bank Makassar Tower Building

2021 ◽  
Vol 4 (1) ◽  
pp. 71-80
Author(s):  
Isty Cahyani Ismail ◽  
Ramli Rahim ◽  
Baharuddin Hamzah
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Light Intensity ◽  
Energy Use ◽  
Energy Savings ◽  
Building Design ◽  
Artificial Light ◽  
Lighting System ◽  
Lighting Systems ◽  
Save Energy

One of the largest energy consumers in the world is buildings. The energy consumption comes from the lighting system. Energy use in buildings is generally 25% for lighting systems. The strategy used in building design is to reduce energy consumption while maintaining the best comfort in a building. The application of energy-saving concepts from the building sector is optimizing the lighting system by integrating natural and artificial lighting systems. This study aims to determine the light intensity in the integrated lighting system of natural and artificial manually and also to find out how much energy can be saved with the integrated lighting system manually. The research location is at the Mega Bank Makassar Tower Building. The research sample was selected by purposive sampling and the sixth floor was chosen as the research location. In this study, simulations were carried out using the DIAlux 4.13 program to integrate natural and artificial light and to calculate the amount of energy efficiency in the workspace. To obtain optimal light intensity and energy savings, a simulation was carried out by turning off half the light points in the workspace, especially the light points around the building openings. The simulation results show that the average integrated lighting quality meets the minimum lighting requirements and can save energy usage by up to 50%. Keywords: energy efficiency; integration lighting; workspace

scholarly journals Empirical and Numerical Analysis of an Opaque Ventilated Facade with Windows Openings under Mediterranean Climate Conditions

Mathematics ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 163
Author(s):  
Carlos-Antonio Domínguez-Torres ◽  
Ángel Luis León-Rodríguez ◽  
Rafael Suárez ◽  
Antonio Domínguez-Delgado
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
Energy Savings ◽  
Field Measurements ◽  
Energy Performance ◽  
Total Energy Consumption ◽  
Building Stock ◽  
Climate Conditions ◽  
Ventilated Facade ◽  
Indoor Comfort

In recent years, there has been growing concern regarding energy efficiency in the building sector with energy requirements increasing worldwide and now responsible for about 40% of final energy consumption in Europe. Previous research has shown that ventilated façades help to reduce energy use when cooling buildings in hot and temperate climates. Of the different ventilated façade configurations reported in the literature, the configuration of ventilated façade with window rarely has been studied, and its 3D thermodynamic behavior is deserving of further analysis and modeling. This paper examines the thermal behavior of an opaque ventilated façade with a window, in experimentally and numerical terms and its impact in energy savings to get indoor comfort. Field measurements were conducted during the winter, spring and summer seasons of 2021 using outdoor full scale test cells located in Seville (southern Spain). The modeling of the ventilated façade was carried out using a three-dimensional approach taking into account the 3D behavior of the air flow in the air cavity due to the presence of the window. The validation and comparison process using experimental data showed that the proposed model provided good results from quantitative and qualitative point of view. The reduction of the heat flux was assessed by comparing the energy performance of a ventilated façade with that of an unventilated façade. Both experimental and numerical results showed that the ventilated façade provided a reduction in annual total energy consumption when compared to the unventilated façade, being compensated the winter energy penalization by the summer energy savings. This reduction is about 21% for the whole typical climatic year showing the ability of the opaque ventilated façade studied to reduce energy consumption to insure indoor comfort, making its suitable for use in retrofitting the energy-obsolete building stock built in Spain in the middle decades of the 20 century.

scholarly journals Serious Games as an Engaging Medium on Building Energy Consumption: A Review of Trends, Categories and Approaches

2020 ◽  
Vol 12 (20) ◽  
pp. 8508
Author(s):  
Xianfeng Wu ◽  
Shuli Liu ◽  
Ashish Shukla
Keyword(s):  
Energy Consumption ◽  
Serious Games ◽  
Energy Use ◽  
Real Life ◽  
Building Energy ◽  
End Users ◽  
Evaluation Framework ◽  
Building Energy Consumption ◽  
Energy Monitoring ◽  
Save Energy

Serious games, as an engaging medium on energy consumption, have recently become more popular, as they present an educational mechanism to engage end-users. A novel application of serious games in engaging and educating end-users has been validated during the last years. However, there is little research focusing on the review of its development trends, categories and approaches. The proposed paper reviews serious games as an engaging medium for building energy consumption. The research focuses on the role of energy-consumption awareness-related education in motivating end-users to save energy and make informed decisions to change energy-related behaviours. This research stresses the approaches to underlining the issue as ascertained from a number of efficiency-related serious games. The investigation suggests the potential impact that serious games can have on changing the domestic practices of householders, in a safe, fun and interactive environment. This would enable householders to investigate alternative ways of meeting energy-consumption targets and realise the limits to their energy-saving potential. It concludes that at present, serious games do not take advantage of the opportunities available in energy monitoring and sub-metering, or real-life energy behaviours. Meanwhile, the existing evaluation framework for the effectiveness of an energy serious game still needs to be further developed. However, active engagement in energy monitoring has contributed to numerous past successes in energy use reduction, and gamification and serious games show great potential for building upon these achievements.

scholarly journals Toward Building Energy Reduction Through Solar Energy Systems Retrofit Options: An Equest Model

2018 ◽  
Vol 8 (1) ◽  
pp. 53-60
Author(s):  
M. Javad Dehghani ◽  
P. McManamon ◽  
A. Ataei
Keyword(s):  
Energy Consumption ◽  
Solar System ◽  
Energy Savings ◽  
Building Energy ◽  
Energy Reduction ◽  
Office Building ◽  
Combined System ◽  
Total Energy Consumption ◽  
Photovoltaic Array ◽  
Efficiency Measures

Abstract Office buildings are responsible for a great portion of total energy consumption. In this study, solar system based retrofitting measures such as daylighting control system (DCS), Trombe wall (TW) and photovoltaic (PV) systems are modeled to an office building located in Dayton, Ohio, United States. An energy modeling tool, eQuest is utilized to analyze the economic and environmental impacts of the proposed single retrofitting measures along with the combined measure to identify the optimized building energy reduction opportunity. Compared to the baseline energy consumption, adopting single energy efficiency measures such as PV, DCS, TW, and overhangs/fins to windows results in about 25, 10, 9, 1 percentages of energy reduction respectively. In terms of economic perspectives, overhang and fins provide the best simply payback time around 1 year. Other solar system based retrofitting measures such as TW, DCS and PV can provide economic simple payback with 1.5, 2.5, and 12 years respectively. PV turned out to be the most costly options although it provides the largest energy savings which lead to the largest CO2 reductions. Adopting the combined system along with 50 kW photovoltaic array to the rooftop results in 45 percent office building energy reduction.

scholarly journals Analysis of Energy Consumption Using Sequential to Better Signal (SBS) Scheme for Green Celluler Network

2020 ◽  
Vol 8 (1) ◽  
pp. 221-239
Author(s):  
Haniah Mahmudah ◽  
Okkie Puspitorini ◽  
Ari Wijayanti ◽  
Nur Adi Siswandari ◽  
Yetik Dwi Kusumaningrum
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Cellular Network ◽  
Energy Savings ◽  
Base Station ◽  
Base Stations ◽  
Sleep Mode ◽  
Total Energy Consumption ◽  
Energy Consuming ◽  
Save Energy

Over time, cellular communication technology developed significantly from year to year. This is due to increasing the number of users and the higher needed. To overcome this problem, many providers increase the number of new base station installations to fill up the customer's needed. The increase number of base stations does not take into account the amount of power consumption produced, where in the cellular network Base Stations (BS) are the most dominant energy consuming equipment estimated at 60% - 80% of the total energy consumption in the cellular industry. In addition, energy waste often occurs in the BS where the emission power will always remain even if the number of users is small. Power consumption and energy savings are important issues at this time because they will affect CO2 emissions in the air. This paper proposes to save energy consumption from BS by turning off BS (sleep mode) if the number of users is small and distributed to other BS (neighboring BS) which is called cell zooming technique. The cell size can zoom out when the load traffic is high and zoom in when the load traffic is low. To determine the central BS and neighboring BS, a sequential to better signal (SBS) scheme is used where this scheme sorts neighboring BS based on the SINR value received (user). The results of this research, base station can be able to save energy 29.12% and reduce CO2 emission around 3580 kg/year.  It means saving energy consumption which is also reducing air pollution occurs and this term can be named as green cellular network. 

scholarly journals The modifications to the requirements on energy savings and thermal insulation of buildings in Poland in the years 1974-2021

2015 ◽  
Vol 14 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Anna Życzyńska ◽  
Tomasz Cholewa
Keyword(s):  
Heat Transfer ◽  
Energy Consumption ◽  
Energy Demand ◽  
Energy Savings ◽  
Building Energy ◽  
The European Union ◽  
Transfer Coefficients ◽  
Total Energy Consumption ◽  
Heat Transfer Coefficients ◽  
Technical Requirements

Residential and public buildings use for heating more than 40% of the total energy consumption in the European Union. Therefore, this paper discusses the modifications to the building energy standard, which is currently in force. It is based on the requirements included in the Polish technical building regulations and standards. The proper energy-saving police have been implemented to this kind of consumers to diminish the energy consumption. The analysis pertains to the values of heat transfer coefficients of building partitions as well as the indexes of the energy demand for various types of buildings. The analysis was conducted between 1974 and 2013. Moreover; the changes within this range, which will come into force in 2014 and will continue to 2021, which act in accordance with the technical requirements suitable for buildings, were also discussed. Furthermore, minimal thicknesses of insulation materials which enable meeting this requirements of a heat transfer coefficient for building partitions, were examined in the article.

The Importance of Building Energy-Saving Show from the Change of Climate Parameters in Energy-Saving Standards

2014 ◽  
Vol 587-589 ◽  
pp. 397-400
Author(s):  
Jie Zhang ◽  
Xiao Dong Qin
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Energy Saving ◽  
Energy Use ◽  
Residential Buildings ◽  
Building Energy ◽  
Total Energy Consumption ◽  
Building Area ◽  
Building Energy Saving ◽  
Oil Gas

Energy-saving work has made great achievements in our country, the index of heat loss of building of per building area in new residential buildings fell sharply, but total energy consumption and the proportion of it in social total energy consumption is rising. A large number of coal, oil, gas and other fossil energy use, caused the climate warming and so on the adverse effects on the human survival environment, these phenomena, warns us to further strengthen the importance of building energy-saving work.

Energy savings potential of new aeration system: Full scale trials

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
A. Lazić ◽  
V. Larsson ◽  
Å. Nordenborg
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Total Energy ◽  
Energy Savings ◽  
Treatment Plant ◽  
Full Scale ◽  
Total Energy Consumption ◽  
Aeration System ◽  
Fine Bubble ◽  
Aeration Control

The objective of this work is to decrease energy consumption of the aeration system at a mid-size conventional wastewater treatment plant in the south of Sweden where aeration consumes 44% of the total energy consumption of the plant. By designing an energy optimised aeration system (with aeration grids, blowers, controlling valves) and then operating it with a new aeration control system (dissolved oxygen cascade control and most open valve logic) one can save energy. The concept has been tested in full scale by comparing two treatment lines: a reference line (consisting of old fine bubble tube diffusers, old lobe blowers, simple DO control) with a test line (consisting of new Sanitaire Silver Series Low Pressure fine bubble diffusers, a new screw blower and the Flygt aeration control system). Energy savings with the new aeration system measured as Aeration Efficiency was 65%. Furthermore, 13% of the total energy consumption of the whole plant, or 21 000 €/year, could be saved when the tested line was operated with the new aeration system.

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