scholarly journals A CONCEPTUAL FRAMEWORK FOR DELIVERING SUSTAINABLE BUILDING ENERGY EFFICENCY RETROFIT USING THE ENERGY PERFORMANCE CONTRACTING (EPC) IN CHINA

2013 ◽  
Vol 8 (1) ◽  
pp. 177-190 ◽  
Author(s):  
Pengpeng Xu ◽  
Edwin H. W. Chan ◽  
Patrick T. I. Lam
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Success Factors ◽  
Building Energy ◽  
Energy Performance ◽  
Existing Buildings ◽  
Sustainable Building ◽  
Performance Contracting ◽  
Service Companies ◽  
Energy Service

Sustainable building has become a future development trend in the building sector. Building Energy Efficiency Retrofit (BEER) provides excellent opportunities to reduce energy consumption in existing buildings, and to promote environmental protection, the rational use of resources, occupants' health, all of which helps to improve the sustainability of existing buildings. Energy Performance Contracting (EPC) provided by Energy Service Companies (ESCOs) is a market mechanism to provide financial and technological support for energy efficiency projects. This paper aims to develop a sustainability promotion framework for BEER projects under the EPC mechanism to link the sustainable performance of BEER with the success factors of this EPC mechanism. Different types of building have different energy consumption characteristics. This research focuses on hotel buildings in China. The paper develops a framework for sustainable BEER through an EPC mechanism in hotel buildings based on the EFQM Excellence Model for business quality management. Interviews were conducted with experts from the hotel industry, from energy service companies and with academics. Based on the developed framework, the study has identified 11 performance indicators for sustainable BEER and 28 success factors of an EPC mechanism. This provides significant groundwork for future study in developing an assessment model to evaluate the sustainability of BEER projects.

Correlation Study on User Satisfaction from Adaptive Behavior and Energy Consumption in Office Buildings

2014 ◽  
Vol 70 (7) ◽  
Author(s):  
Ali Keyvanfar ◽  
Arezou Shafaghat ◽  
Mohd Zaimi Abd Majid ◽  
Hasanuddin Lamit ◽  
Kherun Nita Ali
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Adaptive Behavior ◽  
User Satisfaction ◽  
Building Design ◽  
Building Energy ◽  
Energy Performance ◽  
Assessment Tools ◽  
Sustainable Building ◽  
Building Assessment

Sustainable Building Assessment Tools have not yet measured the association between user satisfaction with adaptive behavior and energy efficiency. The current research aims to rectify this problem by testing the hypothesis that user satisfaction with adaptive behavior affects building energy consumption. To test the hypothesis, the staff’s overall satisfaction with adaptive behavior in response to tenant energy-efficiency features was used as the independent variable, while office unit energy consumption was used as the dependent variable. A set of conceptual variables and measured variables were identified for both the dependent and independent variables. A total of nine possible combinations of measured variables were investigated through a survey fielded in ten office units. The survey analysis determined that the building users are not satisfied with the tenant energy efficiency features and that they may adapt the indoor environment cooling and lighting qualities. An expert input study was conducted to validate the results with respect to the hypothesis. Seven experts who had experience in building assessments were invited to participate in the input study. Grounded group decision making analysis method confirmed the hypothesis testing results. The research results indicated that user adaptive behaviors directly affect building energy performance. Sustainable Building Assessment Tool developers along with energy efficient building design consultants and contractors could make use of these research findings.

scholarly journals A Study on Energy and Cost Efficiency for Existing Hotel Buildings in Turkey

2019 ◽  
Vol 111 ◽  
pp. 03037
Author(s):  
Merve Atmaca ◽  
Zerrin Yýlmaz
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Cost Efficiency ◽  
Building Energy ◽  
Energy Performance ◽  
Insulation Material ◽  
Negative Effects ◽  
Energy Needs ◽  
Global Cost ◽  
Optimum Solution

In Turkey, according to TUİK Sectoral Energy Consumption Statistics (2006), the hotel buildings with the highest share, constitute 35% of the total building energy consumption. Energy needs and consumption behaviours differ according to the typology of the building. Energy Performance of Buildings Directive (EPBD) has been adapted to the conditions of Turkey to increase energy and cost efficiency, to reduce the environmental and economic negative effects. The energy consumption and the global cost were investigated under different conditions in an existing hotel building. The paper is unique in its ability to deliver optimum solution through comparison by evaluating energy and cost efficiency at the same time considering sectoral, climatic, technological and economic national conditions when the literature research detailed in the present works about the problem is evaluated in detail. All findings have been compared simultaneously under different climate regions of seasonal and yearly working conditions of selected test hotel to obtain the energy and cost efficiency. Among the proposed improvement scenarios, the optimum scenario is determined in terms of cost and energy efficiency in S18 which has the highest energy efficiency. In this case, both insulation material type and thickness as well as glass type can be bent and through multiple measures can be achieved by 25.7% improvement for energy efficiency.

Optimization of Energy Consumption Using BIM-Based Building Energy Performance Analysis

2013 ◽  
Vol 281 ◽  
pp. 649-652 ◽  
Author(s):  
Dae Kyo Jung ◽  
Dong Hwan Lee ◽  
Joo Ho Shin ◽  
Byung Hun Song ◽  
Seung Hee Park
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Performance Analysis ◽  
Cooling System ◽  
Optimization Technique ◽  
Building Energy ◽  
Energy Performance ◽  
Information Modeling ◽  
Building Energy Performance ◽  
Heating And Cooling

Recently, the interest in increasing energy efficiency of building energy management system (BEMS) has become a high-priority and thus the related studies also increased. In particular, since the energy consumption in terms of heating and cooling system takes a large portion of the energy consumed in buildings, it is strongly required to enhance the energy efficiency through intelligent operation and/or management of HVAC (Heating, Ventilation and Air Conditioning) system. To tackle this issue, this study deals with the BIM (Building Information Modeling)-based energy performance analysis implemented in Energyplus. The BIM model constructed at Revit is updated at Design Builder, adding HVAC models and converted compatibly with the Energyplus environment. And then, the HVAC models are modified throughout the comparison between the energy consumption patterns and the real-time monitoring in-field data. In order to maximize the building energy performance, a genetic algorithm (GA)-based optimization technique is applied to the modified HVAC models. Throughout the proposed building energy simulation, finally, the best optimized HVAC control schedule for the target building can be obtained in the form of “supply air temperature schedule”.

scholarly journals ENERGY RETROFITS FOR IMPROVING ENERGY EFFICIENCY IN BUILDINGS: A REVIEW OF HVAC AND LIGHTING SYSTEMS

2021 ◽  
Author(s):  
M.R. Amjath ◽  
◽  
H. Chandanie ◽  
S.D.I.A. Amarasinghe ◽  
◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Use ◽  
Implementation Process ◽  
Energy Performance ◽  
Existing Buildings ◽  
Energy Auditing ◽  
Lighting Systems ◽  
Effective Decision Making ◽  
And Performance

It has been observed that inefficient buildings consume three to five times more energy than efficient buildings. Subsequently, improving the Energy Efficiency (EE) of existing buildings, which account for a significant portion of the energy consumption of the building sector, has become a top priority. Also, Heating, Ventilation, and Air Conditioning (HVAC) and lighting systems typically account for three-quarters of a building's energy consumption. Hence, focus on the energy efficiency improvements associated with these subsystems is entailed to optimise the energy use of buildings in comparison to other energy consumers. Energy Retrofit (ER) is defined as the main approach in improving the energy efficiency of buildings to achieve energy reduction goals. Nevertheless, there is a general lack of awareness regarding ER. Thus, the purpose of this article is to bridge this research gap by critically reviewing the applicable literature on ER. The paper first analysed the role of retrofits in buildings concerning optimising energy performance. The paper also discusses the implementation process of ER, which includes five steps viz. pre-retrofit survey, energy auditing, and performance assessment, identification of suitable and feasible retrofit options, site implementation and commissioning, and validation and verification. Further, different types of ER applicable to HVAC and lighting systems are discussed. In their endeavor to enhance the EE of existing buildings, practitioners could apply the findings of this study, as a basis to understand the available ER types and as a measure to gauge the efficiency of existing buildings, which will facilitate effective decision-making.

scholarly journals Research on the synergy incentive evolution among the EPC subjects of energy efficiency retrofitting of existing buildings from the perspective of fairness cognition

2020 ◽  
Author(s):  
Yanping Yang ◽  
Bojun Wang ◽  
Xiaodan Liu
Keyword(s):  
Energy Efficiency ◽  
Quality Management ◽  
Revenue Sharing ◽  
Energy Performance ◽  
Existing Buildings ◽  
Incentive Effect ◽  
Existing Building ◽  
Performance Contracting ◽  
Effort Level ◽  
The Impact

Abstract In the energy performance contracting (EPC) mode, the energy services company (ESCO) involved in energy efficiency retrofitting of existing buildings often faces the parallel construction of multiple tender segments and multi-professional subcontractors. The one-to-many structure for ESCO and subcontractors causes difficulties to the project quality management and directly affects the effect of energy efficiency retrofitting of existing buildings. Therefore, this paper constructs a revenue-sharing incentive model by considering situation where subjects have fairness cognition. Through the social calculation experiment of the model, results show the following: (1) increasing the revenue-sharing coefficient will help to optimize the engineering quality of energy efficiency retrofitting and increase the energy-saving income; (2) in order to get better incentive effect, the engineering quality grade of energy efficiency retrofitting should match with the incentive strength; (3) because of the impact of fairness cognition, the incentive level difference is too large, and the incentive effect will gradually weaken in the subsequent incentive cycle; (4) subcontractor’s effort level changes can prompt ESCO to adjust the corresponding incentive intensity. Finally, some suggestions are put forward to optimize the engineering quality management of energy efficiency retrofitting of existing building, which is of great significance to improve the effect of energy efficiency retrofitting of existing building under EPC mode.

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.

scholarly journals Building Energy Performance Certificate—A Relevant Indicator of Actual Energy Consumption and Savings?

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3455
Author(s):  
Aleksandar S. Anđelković ◽  
Miroslav Kljajić ◽  
Dušan Macura ◽  
Vladimir Munćan ◽  
Igor Mujan ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Gap ◽  
Building Energy ◽  
Energy Performance ◽  
Building Stock ◽  
District Heating System ◽  
Performance Gap ◽  
Building Energy Performance ◽  
Actual Energy Consumption

A building energy performance gap can be illustrated as the difference between the theoretical (methodologically defined) and the actual energy consumption. In EU countries, Energy Performance Certificates are issued when buildings are constructed, sold, or leased. This information is the first step in order to evaluate the energy performance of the building stock. In Serbia, when issuing an energy certificate, the adopted national methodology recognizes only energy consumption for heating. The main purpose of this paper is to evaluate the energy gap and estimate the relevance of an Energy Performance Certificate to meet the national energy efficiency or carbon target. An Energy Performance Certificate determines the theoretical residential and commercial building energy efficiency or its “design intent”. This research stresses the necessity of measuring and achieving reductions in actual energy consumption through system regulation and consumers’ self-awareness in buildings. The research compares the performance of the building stock (135) that is connected to the District Heating System (DHS), with its own integrated heat meter, to Individual Gas Boiler (IGB) systems (18), in the city of Novi Sad, Serbia, built after 2014. For the purpose of comparing energy consumption, 16 buildings were selected that are very similar in terms of design, operation, and location. The data used are derived from metered consumption data, official evidence of city service companies, and Energy Performance Certificates of the considered buildings. We have determined that IGB systems have a much wider specific annual performance gap (11.19–101 kWh/m2a) than the buildings in the DHS (3.16–18.58 kWh/m2a).

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