Energy performance contracting : an option of implementing energy efficiency measures by property management in residential estates

2013 ◽  
Author(s):  
Ching-ha Lo
Keyword(s):  
Energy Efficiency ◽  
Energy Performance ◽  
Property Management ◽  
Performance Contracting ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Energy Performance Contracting

scholarly journals Application of Urban Scale Energy Modelling and Multi-Objective Optimization Techniques for Building Energy Renovation at District Scale

2021 ◽  
Vol 13 (20) ◽  
pp. 11554
Author(s):  
Fahad Haneef ◽  
Giovanni Pernigotto ◽  
Andrea Gasparella ◽  
Jérôme Henri Kämpf
Keyword(s):  
Energy Efficiency ◽  
Building Energy ◽  
Energy Performance ◽  
Building Envelope ◽  
Optimization Techniques ◽  
Multi Objective Optimization ◽  
Building Stock ◽  
Energy Efficiency Measures ◽  
Multi Objective ◽  
Efficiency Measures

Nearly-zero energy buildings are now a standard for new constructions. However, the real challenge for a decarbonized society relies in the renovation of the existing building stock, selecting energy efficiency measures considering not only the energy performance but also the economic and sustainability ones. Even if the literature is full of examples coupling building energy simulation with multi-objective optimization for the identification of the best measures, the adoption of such approaches is still limited for district and urban scale simulation, often because of lack of complete data inputs and high computational requirements. In this research, a new methodology is proposed, combining the detailed geometric characterization of urban simulation tools with the simplification provided by “building archetype” modeling, in order to ensure the development of robust models for the multi-objective optimization of retrofit interventions at district scale. Using CitySim as an urban scale energy modeling tool, a residential district built in the 1990s in Bolzano, Italy, was studied. Different sets of renovation measures for the building envelope and three objectives —i.e., energy, economic and sustainability performances, were compared. Despite energy savings from 29 to 46%, energy efficiency measures applied just to the building envelope were found insufficient to meet the carbon neutrality goals without interventions to the system, in particular considering mechanical ventilation with heat recovery. Furthermore, public subsidization has been revealed to be necessary, since none of the proposed measures is able to pay back the initial investment for this case study.

scholarly journals Energy Efficiency Measures Applied to Heritage Retrofit Buildings: A Simulated Student Housing Case Study in Vienna

Heritage ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 3919-3937
Author(s):  
Essam Elnagar ◽  
Simran Munde ◽  
Vincent Lemort
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Demand ◽  
Energy Performance ◽  
Building Envelope ◽  
Positive Energy ◽  
Energy Status ◽  
Pv System ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

One pavilion was selected for deep retrofitting from the Otto Wagner area situated in the west of Vienna. The retrofitting process involves sustainable and energy-efficient construction to improve the energy performance and energy production potential of the building while preserving the cultural heritage and significance. This four-story pavilion was re-designed according to the proposed regulations of a net positive energy university building to become a student residence. Architectural, building envelope, and engineering interventions along with various changes were simulated through the Sefaira tool in the SketchUp model. These included: optimization of the U-values of the roof, walls, and floor; the addition of different layers of sustainable energy-efficient insulation materials to decrease the overall energy demand. The specific energy demands for heating, cooling, and lighting were decreased in the proposed model to reduce the total energy use intensity from 248.9 kWh/(m2 year) to 54.3 kWh/(m2 year) resulting in a 78.2% reduction. The main goal of this study is to try and achieve a net positive energy status building as part of the Otto Wagner area by improving the building envelope and integrating renewable energies. A total of 22.5% of the annual energy consumption was generated by the designed PV system. The selected building achieved the passive house standards in Austria by optimizing the energy performance with the proposed energy efficiency measures.

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 Planning energy retrofits of historic buildings

2021 ◽  
Author(s):  
Tor Broström ◽  
Alessia Buda ◽  
Daniel Herrera ◽  
Franziska Haas ◽  
Alexandra Troi ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Systematic Approach ◽  
Energy Performance ◽  
Historic Buildings ◽  
Value Assessment ◽  
European Standard ◽  
Historic Building ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Holistic Assessment

This handbook follows the systematic approach outlined by the European standard EN 16883:2017 Guidelines for improving the energy performance of historic buildings. It describes how the standard can be applied in practice with chapters on heritage value assessment, building survey and holistic assessment of energy efficiency measures. The book draws on the experience from a team of international leading experts in the field of energy efficiency in historic building.

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