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The prevailing literature argues the need for “new” skills to deliver energy-efficient buildings. The concept of new skills, however, has not been subject to empirical investigation. This paper aims to provide insight on the required new skills, and their development and application, for the successful delivery of energy-efficient school retrofit buildings.

The research employed a case study approach of a school retrofit building project in the early stages of the adoption of energy-efficient measures. Through the application of the socio-technical network approach (STNA) as the data collection and analysis framework, data were collected through semi-structured interviews, observations and a review of relevant organisational documentation and were analysed using thematic coding.

The findings reveal key actors (i.e. the local authority, energy contractors and school end-users), their principal interests and the required communication, project management, energy management, technical and research skills during their interactions in the successful delivery of the school retrofit building project. The results further reinforce the crucial role of the local authority in driving energy performance improvement of school buildings.

This study demonstrates empirical evidence of the principal actors and skills required for the delivery of energy-efficient school retrofit buildings, contributes to new theoretical insights at the identification of key micro-level development of construction skills through the project network and evidences on how the STNA can be mobilised in construction skills research.

Adaptive reuse of heritage stock has several advantages: retention of culturally and socially significant buildings, as well as the opportunity to consider embodied energy, energy efficiency retrofit measures and other environmental upgrades. The purpose of this paper is to identify the technical issues faced in the adaptive reuse of Australian heritage listed city halls and discuss sustainable strategies to enable further adaptations to be more energy efficient.

Adaptive reuse of a heritage building provides an opportunity to retain embodied energy, improve energy efficiency and enhance durability, which are important aspects of the technical lifecycle of a building. Using a case study methodology and a qualitative approach, this paper evaluates adaptations and the technical issues faced in three heritage city halls in Queensland, Australia.

The analysis shows that enhancing energy efficiency enables heritage buildings to reduce their climate change impacts. However, the installation of equipment for energy efficiency can pose technical issues for heritage buildings. The ownership of heritage building and interest of the local community affects the solutions that are viable. Solutions and further sustainable strategies are proposed through analysis of case studies.

City halls globally adopt different and varied architectural designs, features and scales. They are often heritage listed and locally significant landmarks that have undergone various adaptations; however, they have been overlooked in much adaptive reuse research, particularly in Australia. City halls differ from other heritage buildings in their collective sense of ownership which is important in regard to proposed changes, as citizens have an interest and hold opinions which may affect measures adopted. This paper contributes to the body of knowledge related to energy efficient technical adaptive reuse of city halls.

Concern of the deterioration of indoor environmental quality as a result of energy efficient building design strategies is growing. Apprehensions of the effect of airtight, super insulated envelopes, the reduction of infiltration, and the reliance on mechanical systems to provide adequate ventilation (air supply) is promoting emerging new research in this field. The purpose of this paper is to present the results of an indoor air quality (IAQ) and thermal comfort investigation in UK energy efficient homes, through a case study investigation.

The case study dwellings consisted of a row of six new-build homes which utilize mechanical ventilation with heat recovery (MVHR) systems, are built to an average airtightness of 2m3/m2/hr at 50 Pascal’s, and constructed without a central heating system. Physical IAQ measurements and occupant interviews were conducted during the summer and winter months over a 24-hour period, to gain information on occupant activities, perception of the interior environment, building-related health and building use.

The results suggest inadequate IAQ and perceived thermal comfort, insufficient use of purge ventilation, presence of fungal growth, significant variances in heating patterns, occurrence of sick building syndrome symptoms and issues with the MVHR system.

The findings will provide relevant data on the applicability of airtight, mechanically ventilated homes in a UK climate, with particular reference to IAQ.

IAQ data of this nature is essentially lacking, particularly in the UK context. The findings will aid the development of effective sustainable design strategies that are appropriate to localized climatic conditions and sensitive to the health of building occupants.

The article's aim is to present user experiences with passive houses and zero‐energy buildings. The focus is on the interaction between the building and the users, specifically on how user interfaces, knowledge, and commitment influence the use of the building and the level of energy consumption awareness.

The study follows an explorative grounded theory approach. This approach generates insights that will be consolidated in follow‐up studies. Qualitative interviews with users of six buildings were conducted. Site inspections applying walk‐through method and other available information complement the data.

Users in general were satisfied with having a new energy efficient building. Several respondents were more concerned about the environment now than before. However, there were concerns about thermal comfort. Misuse or misunderstandings among users in some cases led to lower indoor comfort. New or dissatisfactory design solutions were also responsible for unsatisfactory indoor environmental quality.Practical implications – Specific topics that should be paid more attention to in the design and research on new energy efficient buildings: level of end‐user control and adaptability of the building; level of complexity of systems; the need for adequate information.

The open approach enabled occupants to influence the parameters of the evaluations. Most evaluations of zero‐energy buildings are not yet publicly accessible.

Application of appropriate shading device strategies in buildings can reduce direct solar heat gain through windows as well as optimize cooling and artificial lighting load. This study investigates the impact of common shading devices such as overhangs, fins, horizontal blinds, vertical blinds and drapes on energy consumption of an office building and suggests energy efficient shading device strategies in the contexts of unique Bangladeshi subtropical monsoon climate.

This research was performed through the energy simulation perspective of a prototype office building using a validated building energy simulation tool eQUEST. Around 100 simulation patterns were created considering various types of shading devices and building orientations. The simulation results were analysed comprehensively to find out energy-efficient shading device strategies.

Optimum overhang and fin height is equal to half of the window height in the context of the subtropical climate of Bangladesh. South and West are the most vulnerable orientations, and application of shading devices on these two orientations shows the highest reduction of cooling load and the lowest increment of lighting load. An existing building was able to save approximately 7.05% annual energy consumption by applying the shading device strategies that were suggested by this study.

The shading device strategies of this study can be incorporated into the Bangladesh National Building Code (BNBC) as new energy-efficient building design strategies because the BNBC does not have any codes or regulations regarding energy-efficient shading device. It can also be used as energy-efficient shading device strategies to other Southeast Asian countries with similar climatic contexts of Bangladesh.

Estimates show that close to 90% of the buildings we will need in 2050 are already built and occupied. The increase in the existing building stock has affected energy consumption thereby negatively impacting the environment. The purpose of this paper is to assess determinants of sustainable upgrade of existing buildings through the adoption and application of sustainable technologies. The study also ranks sustainable technologies adopted by the professionals who participated in the survey with an in-built case study.

As part of the overall methodology, a detailed literature review on the nature and characteristics of sustainable upgrade and the sustainable technologies adopted was undertaken. A survey questionnaire with an in-built case study was designed to examine all the sustainable technologies adopted to improve energy consumption in Australia. The survey was administered to sustainability consultants, architects, quantity surveyors, facility managers and engineers in Australia.

The results show a total of 24 technologies which are mostly adopted to improve energy consumption in existing buildings. A factor analysis shows the main components as: lighting and automation, heating, ventilation and air conditioning (HAVC) systems and equipment, envelope, renewable energy and passive technologies.

The findings bridge the gap in the literature on the adoption and application of sustainable technologies to upgrade existing buildings. The technologies can be adopted to reduce the excessive energy consumption patterns in existing buildings.

This study investigates the impact and economic viability of energy-efficient building envelope and orientation for contributing net zero energy building (NZEB) and suggests optimum thermal insulation thickness, optimum wall thickness, appropriate orientation and glazing types of window in the contexts of unique Bangladeshi subtropical monsoon climate.

The whole study was conducted through energy simulation perspective of an existing office building using building information modeling (BIM) and building energy modeling (BEM) tools which are Autodesk Revit 2017, Autodesk Green Building Studio (GBS) and eQUEST. Numerous simulation patterns were created for energy simulation considering building envelope parameters and orientations. A comprehensive data analysis of simulation results was conducted to sort out efficient passive design strategies.

The optimum thermal mass and thermal insulation thickness are 6.5 and 0.5 inches, respectively, considering energy performance and economic viability. This study highly recommends that a building should be designed with a small window-to-wall ratio in the south and west face. The window should be constructed with double glazing Low-E materials to reduce solar heat gain. The studied building saves 9.14% annual energy consumption by incorporating the suggested passive design strategies of this study.

The output of this work can add some new energy-efficient design strategies to Bangladesh National Building Code (BNBC) because BNBC has not suggested any codes or regulations regarding energy-efficient passive design strategies. It will also be useful to designers of Bangladesh and other countries with similar subtropical climatic contexts which are located in Southeast Asia and Northern Hemisphere of Earth.

The purpose of this paper is to investigate the commercial aspect of “green” building construction and whether increased investment costs are profitable taking the reduction in operating costs into account. The investment viability is approached by comparing investment in conventional and “green” residential building, particularly passive houses, using real construction and post‐occupancy conditions.

The key data were obtained by surveys and personal interviews. The first survey was directed to the companies which had experience of building low‐energy housing and the second survey to housing companies that actively manage operation of low‐energy houses.

Findings indicate that low‐energy buildings are considered an interesting and sound business opportunity, and investment analysis indicates that low‐energy houses (particularly passive houses) can be more attractive investments than conventional residential buildings. The long‐term strategy of building low‐energy buildings can give competitive advantages. The government initiative and the construction regulations are found to be necessary in eliminating the initial barrier to energy‐efficient projects and achieving long‐term environmental goals.

This paper provides insights into the investment decisions and contributes to the understanding of the construction, operation and profitability of energy‐efficient residential buildings.

Building energy efficiency is an inescapable part of the solution to Africa's sustainable development; its implementation can result in cost effective ways that can contribute to economic and social development as well as environmental sustainability. Despite this, a number of factors including financial barriers and market barriers are perceived by policy makers and building designers to influence the efficient use of energy in buildings. The purpose of this paper is to investigate the perceptions of architects in relation to the challenges of building energy efficiency in Ghana.

From a review of pertinent literature 18 factors were identified as challenging. Empirical investigation was carried out using survey questionnaire. The consideration of overlapping aspects of the study largely motivated the use of factor analysis to analyse the data which made it possible to make scientific deductions and built explanations from the results.

The study derives five brands of uncorrelated variables that better explains challenges faced in implementing building energy efficiency in Ghana. These variables include financial barriers, information barrier, private sector participation, behavioural barriers and production barrier. The study provides insight on the contextual provision of realities faced in implementing building energy efficiency in Ghana.

Key contribution of the paper to the body of knowledge is manifested in the use of the principal component analysis. This has rigorously provided understanding into the complex structure and the relationship between the various knowledge areas of building energy efficiency barriers in Ghana.

The purpose of this paper is to identify the factors present in successful energy efficiency investments that might indicate how to resolve the landlord-tenant dilemma in existing and new commercial property.

The paper reviews literature to indicate the importance of energy efficiency in buildings and to explore the barriers to such investments, including problematic landlord-tenant relationships. Such relationships have been investigated by the International Energy Agency, and a similar approach is used here in two case studies in new and existing buildings. These studies explore the nature of landlord-tenant relationships and the importance of policy and standards of building performance.

In neither case did landlord-tenant issues constitute barriers to investments in energy efficiency, however, these investments were made for other reasons than simple cost savings. Construction of new commercial property to Passivhaus standards ensures a high-build quality and a comfortable building with low-energy costs. The added value to tenants may justify the cost of construction. The cost of investments in energy efficient buildings can also be justified by the enhanced reputation of landlords which may be more valuable than a DEC rating. In neither case was the commercial Green Deal felt to be an attractive funding mechanism.

Conclusions based on these case studies must be regarded as tentative, so future studies of successful energy efficient buildings should be undertaken to explore the motivation to invest, particularly the relative importance of indirect benefits of energy efficiency.

One of the case study buildings is exceptionally energy efficient and is the result of a particularly open and effective contractual relationship. Further study of such cases may suggest a new approach to landlord-tenant problems of energy efficiency, even in refurbishment of existing buildings.