scholarly journals Framework for Evaluating Financial Impacts of Technical Risks Related to Energy-Efficient Renovation of Commercial Office Buildings

2021 ◽  
Vol 11 (1) ◽  
pp. 32
Author(s):  
Annalisa Andaloro ◽  
Graziano Salvalai ◽  
Gabriele Fregonese ◽  
Linda Tso ◽  
Giulia Paoletti
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Evaluation Method ◽  
Climatic Conditions ◽  
Office Buildings ◽  
Mitigation Measures ◽  
Building Energy Efficiency ◽  
Existing Building ◽  
Technical Risks ◽  
Financial Impacts

Energy efficiency in the building sector is a priority of the EU Commission to achieve carbon neutrality by 2050. Renovation of the existing buildings, which are currently responsible for approximately 40% of EU energy consumption and 36% of the greenhouse gas emissions can lead to significant energy savings. This paper presents the EEnvest calculation method for evaluating the financial impacts of technical risks related to energy-efficient renovation of commercial office buildings. The evaluation method aims to increase investors’ confidence and boost investments in the renovation of the existing building. Through a series of Key Performance Indicators (KPI), the technical and financial risks impact is evaluated. The results are strictly connected to building features, climatic conditions, solution sets and mitigation measures specific to the building energy efficiency project.

scholarly journals BUILDING ENERGY AND ARCHITECTURAL FORM RELATIONSHIPS / PASTATO ENERGIJOS IR ARCHITEKTŪRINĖS FORMOS RYŠIAI

2011 ◽  
Vol 3 (3) ◽  
pp. 67-71 ◽  
Author(s):  
Roberts Riekstiņš
Keyword(s):  
Energy Efficiency ◽  
Environmental Sustainability ◽  
Energy Efficient ◽  
Large Scale ◽  
Building Energy ◽  
Substantial Part ◽  
Building Energy Efficiency ◽  
Total Energy Consumption ◽  
Architectural Form ◽  
Energy Efficient Building

Energy efficiency of buildings, of course, is now a major issue in the construction industry. It is being widely examined both among construction professionals and amateurs. There is no doubt that energy efficiency as a key factor in ensuring environmental sustainability will become the main driving force of the construction in the future. Buildings have to become more energy-efficient. This opinion is supported by the existing energy-use balance in Europe, indicating that the housing sector spends almost half of total energy consumption and building sector forms more than a third of total CO2 emissions (Bradley 2010). While discussing the subject of building energy efficiency, mostly different technical characteristics of buildings and engineering solutions are talked over. However, it has been relatively little examined how energy-efficient design affects the building’s architecturally-aesthetic side, styles of expression and trends in the architect’s profession. We learn that the essence for an energy-efficient building lies in smart modesty (Bokalders, Block 2010) and the rational utilization of materials (aim high – go low). And still – can energy efficient building be expressive, extravagant, and perhaps – even ambitious? There are many ideas implemented in projects which show that energy efficiency is not an obstacle to large scale architectural ideas. However, in order to combine architectural and artistic ambitions with the principles of sustainability, architects should search for an entirely new approach to architectural expression based on a detailed assessment of solutions applied from environmental point of view. It requires a complex understanding of building shape, applied technologies, energetic benefits and cost parameters. This article identifies the realised and experimental projects of the world and presents an analysis of classification of buildings according to typology. This publication gives general impression of the amplitude and topicality of the study issue, as well as the diversity applied to the architectural techniques. The article concludes that even creating a building’s shape in a smart way makes it possible to use substantial part of the renewable energy offered by nature.

Effect of Smart Glazing Window on Energy Consumption inside Office Building

2020 ◽  
Vol 1008 ◽  
pp. 72-83
Author(s):  
Asmaa Mohammed Nageib ◽  
Abbas Mohamed El-Zafarany ◽  
Fatma Osman Mohamed ◽  
Mohamed Helmy El-Hefnawy
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Solar Radiation ◽  
Climatic Conditions ◽  
Office Buildings ◽  
Smart Windows ◽  
Upper Egypt ◽  
Natural Lighting ◽  
North East ◽  
Office Rooms

The office buildings in Egypt, especially in Upper Egypt, reflect serious problems in achieving for energy efficiency as a result of increasing the use of mechanical refrigeration devices in office rooms, due to solar radiation and rising summer temperatures in recent years. Smart windows can play an important role in reducing significantly the energy consumption and maintaining energy inside buildings, also helps to control incoming solar radiation in order to minimize solar gain, especially in summer as well as ensuring the best natural lighting conditions without glare inside a room. This paper aims to evaluate the most efficient daylight and thermal performance of various types of the smart glazing and its impact on the energy consumption in the climatic conditions of one of the office buildings (Diwan governorate) in Sohag governorate as one of Upper Egypt governorates, with determining the best smart glass types for efficient use of energy. The paper follows the theoretical, applied, by studying types of smart glazing and their relation to achieving the energy efficiency. Then using (Energy Plus) simulation tool, which has been used in utilizing its modeling orientation (Design Builder) to study using types of smart glazing on the model of an office room in Building of Diwan governorate of Sohag in the four different orientations (North, East, South and West), when window-to-floor ratios (WFRs) (8%, 16%, 24% and 32%). The paper ends with a presentation of the most important results, recommendations and determination the best types of smart glass that provides energy, daylight without glare and providing greater comfort to users.

scholarly journals Energy Efficient Improvements of Existing Buildings through Building Envelope Upgrade Case Study of High Rise Block of Flats on 76, Boulevard Partizanski Odredi in Karpos IV, Skopje

2016 ◽  
Vol 2016 ◽  
pp. 1-180
Author(s):  
Katerina Petrushevska
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Performance ◽  
Building Envelope ◽  
Living Room ◽  
Building Stock ◽  
Existing Building ◽  
High Rise ◽  
Class B

AIM: This research examines the important issue of energy efficient improvements to the existing building stock through building envelope upgrade. To facilitate this, the energy performance characteristics of the existing building stock were identified with a view to establishing an existing building stock type, where building envelope upgrades can contribute to a higher level of energy efficiency improvements. The literature review along with the selected building precedents was used to establish the best current practice for building envelope upgrades.MATERIAL AND METHODS: Established building precedents and identified best practice for building envelope upgrade, a high rise block of flats was identified and used as a case study, with the current and predicted, following building envelope upgrade, energy performance of the building calculated. This has allowed us to identify the possible energy efficiency improvements for this type of building following the building envelope upgrade. RESULTS: In the projected case, the building with energy class - "D" become class "B". In addition, increased quality of the living room in the attic was enabled. It was possible to obtain a decrease of the heating energy from 130.76 kWh/m²a to 37.73 kWh/m²a or to jump in the class "B" of energetic passport.CONCLUSION: This research contributes to the local implementation of the global agenda for sustainable development, design and construction, and it demonstrates the possible way and level of energy efficiency improvements to the least efficient building stock through existing building envelope upgrade.

scholarly journals AN INVESTIGATION STUDY ON EXISTING BUILDING ENERGY EFFICIENCY RENOVATION WITH A WATER THERMAL STORAGE SYSTEM

2021 ◽  
Vol 27 (66) ◽  
pp. 779-784
Author(s):  
Tadao YAGI ◽  
Shigehiro ICHINOSE ◽  
Hiroyuki MIYAJI ◽  
Hironori KIMURA ◽  
Tomoya KAWAJI
Keyword(s):  
Energy Efficiency ◽  
Storage System ◽  
Thermal Storage ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Existing Building

Energy Efficiency Design Strategies for Greenhouse in Colorado

2012 ◽  
Author(s):  
Byung Chang Kwag ◽  
Moncef Krarti
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Efficient ◽  
Climatic Conditions ◽  
Design Strategies ◽  
Climate Conditions ◽  
Agricultural Industry ◽  
Heating Systems ◽  
Outdoor Climate ◽  
Reduce Energy Consumption

A basic principle of well designed greenhouse design emphasizes the utilization of solar energy as much as possible to grow the plants indoors during extreme outdoor climate conditions. Greenhouses can use significant amount of energy due to several factors including poor envelope design, inappropriate maintenance practices, and heavy reliance on fuel-based heating systems. In order to reduce energy consumption in the agricultural industry of Colorado, it is important to design energy efficient greenhouses under Colorado climatic conditions.

Investigating Skill Gaps in Green Building Skills for Energy Efficiency

2014 ◽  
Vol 1073-1076 ◽  
pp. 1282-1287 ◽  
Author(s):  
Godwin U. Aliagha ◽  
Alfred P.T. Goh ◽  
Mat Naim Abdullah ◽  
Nadzri M. Jaafar ◽  
Stephen E. Eluwa
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Online Survey ◽  
Green Building ◽  
Building Energy ◽  
Diagnostic Tools ◽  
Building Energy Efficiency ◽  
Available Energy ◽  
Skill Gaps ◽  
Energy Efficient Building

Shortage of green skills has become a major constraint to energy efficient building programs and policies of Malaysia and many Asian countries. Yet, studies aimed at green skills are rare. Relying on an online survey of 99 professionals accredited by the Malaysian Green Building Index (GBI) this study seeks to: [1] identify the necessary green skills required for design and delivery of energy efficient building; and [2] identify and capture areas of skill gaps based on available and future green skills needs. Our preliminary result reveals that generally, available energy efficient green skills in Malaysia are below average. The highest skill gaps were found to be in the areas of energy efficiency maintenance for HVAC system, competence in use of diagnostic tools to measure building energy efficiency, carbon storage and capture in buildings and competency of architects/ builders in passive designs and installation.

scholarly journals Town planning parameters in the function of building energy efficiency

2015 ◽  
Vol 13 (1) ◽  
pp. 1-9
Author(s):  
Ivana Bogdanovic-Protic ◽  
Mihailo Mitkovic
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Comparative Analysis ◽  
Energy Efficient ◽  
Building Energy ◽  
Town Planning ◽  
Building Energy Efficiency ◽  
Heating Energy Consumption ◽  
Energy Efficient Building ◽  
Least Energy

Energy efficient building is that consuming the least energy while providing comfort. The energy consumption of buildings, in general, as well as in Serbia, is among other things conditioned by the heating, cooling and lighting requirements with a goal of achieving of thermal and light comfort. Heating energy consumption is the result of heat loss and gain, and their values, in addition to other parameters, depend on town planning parameters. The paper focuses on the comparative analysis of impact of building different exposures to wind as well as on impact of the different prevailing orientations on energy efficiency of buildings.

Design Optimization of Energy Efficient Office Buildings in Tunisia

2013 ◽  
Vol 135 (4) ◽  
Author(s):  
Pyeongchan Ihm ◽  
Moncef Krarti
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
High Performance ◽  
Energy Use ◽  
Cost Effective ◽  
Energy Performance ◽  
High Energy ◽  
Office Buildings ◽  
Optimization Approach ◽  
Heating And Cooling

Optimal and cost-effective energy efficiency design and operation options are evaluated for office buildings in Tunisia. In the analysis, several design and operation features are considered including orientation, window location and size, high performance glazing types, wall and roof insulation levels, energy efficient lighting systems, daylighting controls, temperature settings, and energy efficient heating and cooling systems. First, the results of the optimization results from a sequential search technique are compared against those obtained by a more time consuming brute-force optimization approach. Then, the optimal design features for a prototypical office building are determined for selected locations in Tunisia. The optimization results indicate that utilizing daylighting controls, energy efficient lighting fixtures, and low-e double glazing, and roof insulation are required energy efficiency measures to design high energy performance office buildings throughout climatic zones in Tunisia. In particular, it is found that implementing these measures can cost-effectively reduce the annual energy use by 50% compared to the current design practices of office buildings in Tunisia.

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