scholarly journals Analysis of Energy Saving Effect and Cost Efficiency of ECMs to Upgrade the Building Energy Code

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4955 ◽  
Author(s):  
Hye Gi Kim ◽  
Hyun Jun Kim ◽  
Chae Hwan Jeon ◽  
Myeong Won Chae ◽  
Young Hum Cho ◽  
...  
Keyword(s):  
Energy Saving ◽  
Economic Efficiency ◽  
Building Energy ◽  
Energy Performance ◽  
Performance Criteria ◽  
Building Energy Efficiency ◽  
Minimum Requirement ◽  
Saving Effect ◽  
Energy Codes ◽  
Building Energy Codes

Building energy codes are key policy tools for improving building energy efficiency by defining the minimum requirement for the energy performance of new buildings. In Korea, the building energy code was focused on prescriptive criteria for a long time but is now gradually introducing performance criteria. However, switching to performance criteria is not straightforward because of the resistance of the market to abandoning the well-consolidated prescriptive criteria. The objective of this study is to derive appropriate measures to strengthen the prescriptive criteria and the performance criteria, considering both the energy-saving effect and the economic efficiency for new office buildings and educational buildings to increase the market acceptance of the building energy codes. To this end, the energy-saving effects of reference buildings resulting from the reinforcement of the prescriptive criteria in the past have been first analyzed. Then, based on the collected energy performance parameters and cost data, the economic efficiency relative to the energy saving deriving from the application of passive and active energy conservation measures (ECMs) were analyzed, and future building energy code’s reinforcement measures were derived.

A framework for building-related carbon coefficients and primary energy factors for networked electricity supplies

2017 ◽  
Vol 39 (4) ◽  
pp. 492-500 ◽  
Author(s):  
Roger Hitchin
Keyword(s):  
Carbon Emissions ◽  
Building Energy ◽  
Energy Performance ◽  
Primary Energy ◽  
Building Energy Performance ◽  
Energy Factors ◽  
Energy Codes ◽  
The Impact ◽  
Supply Systems ◽  
Building Energy Codes

This Technical Note describes a framework for handling the inherent complexities of carbon emission and primary energy factors for networked electricity supply systems within building energy codes and similar policy instruments. The proposed framework reflects the main characteristics of carbon emissions from such networked supplies, while retaining a level of complexity (and simplification) comparable to that of procedures used in existing building energy codes. The main issues that are addressed are the time-varying nature of factors for networked supply, the impact of variability and curtailment for variable and intermittent renewable sources of electricity and relationship between “marginal” factors and “average” factors. These are important issues as the currently common use of annual system-average factors can result in misleading guidance as to the most effective ways of reducing carbon emissions or primary energy demand. The note first explains the relationship between building energy performance ratings and networked electric supplies. It then discusses the characteristics of electricity demand and the networked supply systems before proposing and discussing the framework. Practical application: A framework that can improve the reliability of building energy performance rating based on carbon emissions or primary energy factors.

Using Vertical Green as Material for Complying Building Energy Code

2012 ◽  
Vol 622-623 ◽  
pp. 1035-1038 ◽  
Author(s):  
Kaweewat Sathien ◽  
Kuaanan Techato ◽  
Juntakan Taweekun
Keyword(s):  
Energy Saving ◽  
Construction Material ◽  
Building Energy ◽  
Building Envelope ◽  
Air Conditioner ◽  
Thermal Transfer ◽  
Plant Utilization ◽  
Energy Codes ◽  
Building Energy Codes

Plant utilization as a part of building envelope has never been introduced in view of the compliance to Building Energy Code or the successful building energy codes or even in view of energy for building labeling. This research tries to find out the approach to utilize the equivalent plant conductivity (ke) in order to make the plant as a construction material for the building envelope. The ke is plugged into the formula of the Overall Thermal Transfer Value to see the energy saving for air-condition from having vertical green. By testing on two rooms with air conditioner, one with vertical green and another is without vertical green, the room with vertical green reduced the Overall Thermal Transfer Value from 59.87 W/m2 to 49.39 W/m2.

Building Energy-Efficiency Running Mode of Large-Scale Public Building: Based on Energy Performance Contracting

2011 ◽  
Vol 368-373 ◽  
pp. 3663-3666
Author(s):  
Qi Song ◽  
Xiao Jie Zhang
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Large Scale ◽  
Building Energy ◽  
Energy Performance ◽  
Building Energy Efficiency ◽  
Public Building ◽  
Performance Contracting ◽  
Energy Performance Contracting ◽  
Running Mode

Energy performance contracting plays a key role in improving the building energy-efficiency in China. This paper introduces the current situation of energy-efficiency of large-scale public building in China and provides an overview of energy performance contracting, and then puts forward an innovative energy-efficiency running mode. This paper tries to offer theoretical references for the development of EMC in energy-saving field of large-scale public buildings.

Analysis and Application of Phase Change Materials on Energy Saving in Buildings

2011 ◽  
Vol 411 ◽  
pp. 523-526 ◽  
Author(s):  
An Wang ◽  
Ming Wen Hu ◽  
Deng Ke Tao ◽  
Jing Wang
Keyword(s):  
Energy Efficiency ◽  
Phase Change ◽  
Energy Saving ◽  
Room Temperature ◽  
Phase Change Materials ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Swelling Soil ◽  
Composite Phase Change Materials ◽  
Saving Effect

Current research on building energy efficiency and the application of the principle of the phase change materials are outlined. Analysis of research regarding phase change materials and their classifications on energy-saving in buildings are analyzed and the main existing issues are summarized. The energy-saving effect is verified with the utilization of paraffin and swelling soil composite phase change materials, the result of which suggests that room temperature can be comparatively stabilized with the utilization of phase change materials and energy efficiency can be critically increased. This demonstrates that phase change materials have a broad potential in engineering endeavors.

IDENTIFICATION OF BARRIERS THAT HINDER THE EFFECTIVE IMPLEMENTATION OF BUILDING ENERGY CODES

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Mohammad Danesh Edalat ◽  
Mohammad Mehdi Mortaheb ◽  
Hamed Kashani
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Building Energy Consumption ◽  
Effective Implementation ◽  
The Past ◽  
Energy Codes ◽  
Energy Efficiency Standards ◽  
Building Energy Codes

In response to the growing energy consumption levels in buildings, many countries have introduced standards and codes aimed at reducing their national building energy consumption and managing the amount of emissions. Title 19 of Iran’s National Building Regulation (NBR) was first introduced in 1991. It was projected that Title 19 can lead to a 30 to 50% reduction in building energy consumption in the country. Nevertheless, evidence suggests that the introduction of Title 19 NBR has not led to substantial saving in building energy consumption. Unlike Title 19 NBR, similar standards in other countries have proven to be very effective in reducing the building energy consumption levels. For instance, it is believed that the implementation of Title 24 of California’s Building Energy Efficiency Standards has led to $66 billion dollars of energy savings over the past 35 years. The objective of this study is to utilize content analysis and experts’ opinion in order to identify and categorize the barriers that hinder the effective implementation of Title 19 NBR in Iran. The contribution of this study to the state of knowledge is the identification of barriers that could hinder the effective implementation of building energy codes.

scholarly journals Energy Analysis of 4625 Office Buildings in South Korea

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1114
Author(s):  
Ki Ahn ◽  
Han Shin ◽  
Cheol Park
Keyword(s):  
Energy Consumption ◽  
South Korea ◽  
Energy Analysis ◽  
Cooling System ◽  
Building Energy ◽  
Office Buildings ◽  
Building Energy Efficiency ◽  
Building Energy Consumption ◽  
Energy Codes ◽  
Building Energy Codes

The purpose of the present study was to investigate the relevance of building thermal performance and characteristics to building energy consumption. This paper reports an energy analysis of 4625 office buildings in Seoul, South Korea, using data from the Korean national building energy database and architectural database. The following four research questions were investigated: (1) Do old buildings consume more energy than new ones? (2) Have strict prescriptive building energy codes contributed to the reduction in energy use intensity (EUI, kWh/m2·year) over the past several decades? (3) What are the characteristics of building energy consumption in terms of season, age, and cooling system (electric chiller vs absorption chiller)? (4) Which factors in the Korean building energy database are relevant to building energy consumption? The analyses revealed that, contrary to common assumptions, new buildings did not always consume less energy than old buildings, and it may be wrong to attribute intensification of prescriptive building energy codes directly to building energy efficiency improvements. In addition, the building characteristics (i.e., district, year built, number of floors, number of elevators, and total floor area) available in the Korean building energy database do not adequately explain building energy consumption, and the existing data collection method needs further improvement.

New Type Rural Residence Energy-Saving Effect Analysis in Northeast China

2013 ◽  
Vol 724-725 ◽  
pp. 1650-1653
Author(s):  
Qing Sun ◽  
Li Na Gao ◽  
Zai Lin Piao ◽  
Shi Yan Gu
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Thermal Environment ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Effect Analysis ◽  
Indoor Thermal Environment ◽  
New Type ◽  
Saving Effect ◽  
A Current

Building energy efficiency is a current research focus. This paper combined actual testing and software simulation to studies the new type rural residential in Chaoyang, study its effect on the indoor thermal environment and energy saving effect. The results showed that the new type rural residential indoor air temperature significantly lower than ordinary one in both vertical and horizontal directions, indoor thermal environment has markedly improved, and heat load indicators reduced significantly, energy-saving rate up to 66.41%, achieved the dual effect of improving indoor thermal environment and energy efficiency.

scholarly journals Impact of Window to Wall Ratio on Energy Loads in Hot Regions: A Study of Building Energy Performance

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1080
Author(s):  
Mamdooh Alwetaishi ◽  
Omrane Benjeddou
Keyword(s):  
Saudi Arabia ◽  
Building Materials ◽  
Building Design ◽  
Building Energy ◽  
Energy Performance ◽  
Design Stage ◽  
Design Solution ◽  
Building Energy Efficiency ◽  
Climatic Regions ◽  
Heating And Cooling

The concern regarding local responsive building design has gained more attention globally as of late. This is due to the issue of the rapid increase in energy consumption in buildings for the purpose of heating and cooling. This has become a crucial issue in educational buildings and especially in schools. The major issue in school buildings in Saudi Arabia is that they are a form of prototype school building design (PSBD). As a result, if there is any concern in the design stage and in relation to the selection of building materials, this will spread throughout the region. In addition to that, the design is repeated regardless of the climate variation within the kingdom of Saudi Arabia. This research will focus on the influence of the window to wall ratio on the energy load in various orientations and different climatic regions. The research will use the energy computer tool TAS Environmental Design Solution Limited (EDSL) to calculate the energy load as well as solar gain. During the visit to the sample schools, a globe thermometer will be used to monitor the globe temperature in the classrooms. This research introduces a framework to assist architects and engineers in selecting the proper window to wall ratio (WWR) in each direction within the same building based on adequate natural light with a minimum reliance on energy load. For ultimate WWR for energy performance and daylight, the WWR should range from 20% to 30%, depending on orientation, in order to provide the optimal daylight factor combined with building energy efficiency. This ratio can be slightly greater in higher altitude locations.

scholarly journals Modifying Building Energy-Saving Design Based on Field Research into Climate Features and Local Residents’ Habits

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 442
Author(s):  
Xiaoyue Zhu ◽  
Bo Gao ◽  
Xudong Yang ◽  
Zhong Yu ◽  
Ji Ni
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Residential Buildings ◽  
Average Energy ◽  
Field Tests ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Local Conditions ◽  
Building Energy Saving ◽  
Average Energy Consumption

In China, a surging urbanization highlights the significance of building energy conservation. However, most building energy-saving schemes are designed solely in compliance with prescriptive codes and lack consideration of the local situations, resulting in an unsatisfactory effect and a waste of funds. Moreover, the actual effect of the design has yet to be thoroughly verified through field tests. In this study, a method of modifying conventional building energy-saving design based on research into the local climate and residents’ living habits was proposed, and residential buildings in Panzhihua, China were selected for trial. Further, the modification scheme was implemented in an actual project with its effect verified by field tests. Research grasps the precise climate features of Panzhihua, which was previously not provided, and concludes that Panzhihua is a hot summer and warm winter zone. Accordingly, the original internal insulation was canceled, and the shading performance of the windows was strengthened instead. Test results suggest that the consequent change of SET* does not exceed 0.5 °C, whereas variations in the energy consumption depend on the room orientation. For rooms receiving less solar radiation, the average energy consumption increased by approximately 20%, whereas for rooms with a severe western exposure, the average energy consumption decreased by approximately 11%. On the other hand, the cost savings of removing the insulation layer are estimated at 177 million RMB (1 USD ≈ 6.5 RMB) per year. In conclusion, the research-based modification method proposed in this study can be an effective tool for improving building energy efficiency adapted to local conditions.

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