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Article
Publication date: 22 August 2023

Xian Yun Tan, Norhayati Mahyuddin, Syahrul Nizam Kamaruzzaman, Norhayati Mat Wajid and Abdul Murad Zainal Abidin

Commercial buildings, which include office buildings, are one of the three major energy-consuming sectors, alongside industrial and transportation sectors. The vast increase in…

Abstract

Purpose

Commercial buildings, which include office buildings, are one of the three major energy-consuming sectors, alongside industrial and transportation sectors. The vast increase in the number of buildings is a positive sign of the rapid development of Malaysia. However, most Malaysian government office buildings tend to consume energy inefficiently due to lack of energy optimization. Most of the previous studies focused on the performance of green buildings in fulfilling the green development guidelines. As such, it is essential to study the energy performance of existing government office buildings that were constructed before most energy-efficient standards were implemented to mitigate energy wastage due to the lack of energy optimization. This study aims to analyse the energy performance of existing non-green Malaysian government office buildings and the factors that influence building energy consumption, as well as to evaluate the efficacy of the existing energy conservation measures.

Design/methodology/approach

This study was conducted by a literature review and case study. The chosen buildings are six government office building blocks located in Kuala Lumpur, the capital city of Malaysia. In this study, a literature review has been conducted on the common factors affecting energy consumption in office buildings. The energy consumption data of the buildings were collected to calculate the building energy intensity (BEI). The BEI was compared to the MS1525:2019 and GBI benchmarks to evaluate energy performance. SketchUp software was utilized to illustrate the solar radiation and sun path diagram of the case study buildings. Finally, recommendations were derived for retrofit strategies based on non-design factors and passive design factors.

Findings

In typical government office buildings, the air-conditioning system consumed the most energy at 65.5%, followed by lighting system at 22.6%, and the remaining 11.9% was contributed by office appliances. The energy performance of the case study buildings is considered as satisfactory as the BEI did not exceed the MS1525:2019 benchmark of 200 kWh/m2/year. The E Block recorded the highest BEI of 183.12 kWh/m2/year in 2020 due to its north-east orientation which is exposed to the most solar radiation. Besides, E Block consists of rooms that can accommodate large number of occupants. As such, non-design factors which include higher occupancy rate and higher cooling demand due to high outdoor temperature leads to higher energy consumption. By considering passive design features such as building orientation and building envelope thermal properties, energy consumption can be reduced significantly.

Originality/value

This study provided a comprehensive insight into the energy performance of Malaysian government office buildings, which were constructed before the energy-efficient standards being introduced. By calculating the BEI of six government office buildings, it is found that the energy performance of the case study buildings fulfils the MS1525 benchmark, and that all their BEIs are below 200 kWh/m2/year. Malaysia's hot and humid climate significantly affects a building's cooling load, and it is found the air-conditioning system is the major energy consumer of Malaysian government office buildings. This study discusses the efficacy of the energy-saving measures implemented in the case study buildings to optimize energy consumption. Recommendations were derived based on the non-design factors and passive design factors that affected the energy consumption of the case study building. It is envisioned that this study can provide practical strategies for retrofit interventions to reduce energy consumption in Malaysian office buildings as well as for office buildings that are in a similar climate.

Details

Open House International, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0168-2601

Keywords

Article
Publication date: 21 June 2022

Nurul Asra Abd Rahman, Syahrul Nizam Kamaruzzaman, Farid Wajdi Akashah and Alyaa Anati Amran

The purpose of this study is to assess the level of energy efficiency (EE) practices and worshippers’ comfort experience towards energy consumption of a selected energy

Abstract

Purpose

The purpose of this study is to assess the level of energy efficiency (EE) practices and worshippers’ comfort experience towards energy consumption of a selected energy retrofitted mosque. This study identifies whether the work was done on ad hoc or planned basis and to gauge the success level of the retrofit work.

Design/methodology/approach

Mixed method was used in this study. A selected mosques with a capacity of more than 1,000 worshippers under the Class A of classification places of assembly with operating hour ranging from 45 to 65 h and the penarafan hijau jabatan kerja raya (pHJKR) rating tool as a benchmarking for EE assessment is used. A total of 45 respondents were involved in this study to obtain their perception on comfort experience in mosque. Meanwhile, energy audit and walk-through surveys were conducted to obtain data on energy consumption. To identify whether the work was done on ad hoc or planned basis and to gauge the success level of the retrofit work, pHJKR rating tool and efficiency standard MS1525:2019 are used for benchmarking in keeping with sustainability guidelines.

Findings

The results of this study indicated that the EE score achieved by the mosque is good while there are still rooms for improvement to increase the higher score to the pHJKR’s EE benchmarking tool.

Research limitations/implications

EE is one of the most important agenda under sustainable development initiatives. Part of the initial government strategy is to encourage the use public buildings in demonstrating initiatives for sustainable development to justify high capital resources investment. Mosque buildings have huge potential for this purpose because as religious public buildings for the majority Muslim community, their operations are fully funded from public funds. Selection of mosques is also driven by its unique intermittent energy consumption pattern, while early mosques adopted natural ventilation, modern mosques are often designed with mechanical ventilation (air conditioning).

Practical implications

An encouragement on government initiative towards sustainable development can be escalating by producing exemplary building for intermittent use pattern categories by mosque as a model.

Social implications

Sustainable development especially in EE becomes normal practices and energy and impact towards environment possibly be saved.

Originality/value

Sustainable development especially in EE becomes normal practices and energy and impact towards environment possibly be saved. This research is based on supportive national agenda by assessing EE measure for development of energy management in intermittent use buildings (mosque).

Details

Facilities , vol. 41 no. 11/12
Type: Research Article
ISSN: 0263-2772

Keywords

Article
Publication date: 6 June 2022

Abdullahi Mohammed Usman and Kamil Abdullah

The purpose of this study is to develop a set of parameters universally acceptable for assessing design and construction strategies for reducing operational energy usage and its…

Abstract

Purpose

The purpose of this study is to develop a set of parameters universally acceptable for assessing design and construction strategies for reducing operational energy usage and its associated greenhouse gas (GHG) emission. Also, the parameters are intended to estimate the quantity of energy and its associated GHG emission reduction over the assessment period.

Design/methodology/approach

This study used five steps framework comprising definition of purpose, selecting the candidate parameters, criteria selection and description, selecting proposed parameters and defining the proposed parameters. The criteria used were the parameter’s prevalence, measurability, preference and feasibility toward adaptability to the relevant stakeholders.

Findings

This study consolidated 11 parameters. Seven cover designs and construction strategies comprising energy monitoring, natural lighting and ventilation design. Others are building thermal performance, efficient equipments, renewable energy and energy policy. The remaining four consider operational energy consumption, GHG emission quantification and their reduction over time.

Practical implications

Providing suitable indicators for assessing direct and indirect GHG emission with easily accessible data is essential for assessing built environment. The consolidated parameters can be used in developing rating systems, monitoring GHG inventories and activities of building related industries.

Originality/value

This study was conducted at the CEIES UTHM and used 11 existing rating systems open for research purposes, International Panel for Climate Change reports and GHG protocol report and guides and several other standards.

Details

Journal of Engineering, Design and Technology , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 8 August 2017

Suzaini M. Zaid, Amir Kiani Rad and Nurshuhada Zainon

Global warming and climate change is one of the biggest issues facing humanity in this century; its effects are felt on the highest peaks of Mount Everest to the low-lying islands…

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Abstract

Purpose

Global warming and climate change is one of the biggest issues facing humanity in this century; its effects are felt on the highest peaks of Mount Everest to the low-lying islands in the India Ocean. This century marked the highest amount of carbon dioxide (CO2) emitted, breaking records of the past 650,000 years, and we have pushed the climate to “a point of no return”. Much of the climate contribution has been linked to humanity’s thirst for higher living standards and lifestyle, which has led to higher consumerism, depletion of earth’s resources, production of massive waste and carbon emissions. Fast forward from the sustainability agenda of Brundtland set in 1987 and the increasing demand for energy consumption to cater for the current global inhabitants, many “green” efforts have been taken by the building industry to reduce the overall environmental impact. This purpose of this study is to compare energy performance of a conventional office building with a green certified building.

Design/methodology/approach

This paper tries to bridge the performance gap by comparing measured operational energy consumption and carbon emission of Green Building Index (GBI)-certified office buildings in Kuala Lumpur, to determine whether “green buildings” are performing as intended in reducing their environmental impact.

Findings

This paper highlighted and compared operational energy consumption and carbon emissions of a GBI-certified office with a conventional office building in Malaysia. The paper also discusses the performance gap issue and its common causes, and aims to compare predicted energy and operational energy performance of buildings.

Originality/value

Initiatives such as “green” or “sustainable” design have been at the forefront of architecture, while green assessment tools have been used to predict the energy performance of a building during its operational phase. There is still a significant performance gap between predicted or simulated energy measurements to actual operational energy consumption. The need to measure actual performance of these so-called “green buildings” is important to investigate if there is a performance gap and whether these buildings can perform better than conventional buildings. Understanding why the performance gap occurs is a step in reducing actual and predicted energy performance in buildings.

Article
Publication date: 30 April 2021

Francisco Sierra

This paper reviews the current literature on the major challenges faced by building contractors in the UK due to COVID-19 to create an evaluation framework.

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Abstract

Purpose

This paper reviews the current literature on the major challenges faced by building contractors in the UK due to COVID-19 to create an evaluation framework.

Design/methodology/approach

A PRISMA scoping review systematically maps the information published and establishes the potential challenges, as a precursor to a literature review that synthesises the data available to establish an initial COVID-19 evaluation framework to build a rationale for a future series of studies.

Findings

The research identified these seven challenges: health and safety on-site, economic cost, possible legal exposures, manpower availability, instability of the supply chain and subcontractors, and the uncertainty related to the constant and unpredictable evolution of the pandemic. The magnitude of each challenge was also found to differ depending on the size of the contractor, the rigor of local regulations and the sector where the contractor works.

Research limitations/implications

This research contributes to increasing understanding on the subject and provides an initial assessment framework, based on these seven parameters, so that contractors can analyse their weaknesses and plan specific priorities so that their companies can remain competitive, minimising the impact of COVID-19 and possible future waves.

Originality/value

This research is timely and relevant as it produces the first academic review on how COVID-19 has affected contractors and the construction stage. This document gives a holistic view of the new scenario created by COVID-19 and creates a self-assessment system for contractors to test their resistance to COVID-19.

Details

Engineering, Construction and Architectural Management, vol. 29 no. 4
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 1 September 2016

Lingyun Zhou, Jie Wu, Dong Mu, Yachao Wu and Zhonghua Gu

As a crucial element of city planning, an adequately planned logistics center for agricultural products can improve the circulation efficiency of agricultural products, thereby…

Abstract

As a crucial element of city planning, an adequately planned logistics center for agricultural products can improve the circulation efficiency of agricultural products, thereby contributing to a convenient lifestyle of urban residents. First, this study analyzed the functional zones of urban green logistics centers for agricultural products based on low-carbon idea. A method was also proposed to calculate the area of each functional zone. Moreover, this study proposed a layout planning innovation method of urban green logistics centers for agricultural products based on logistics motion line analysis and logistics intensity calculation. Lastly, this study analyzed the application processes of the layout planning methodology according to the topographical conditions of Huai’an logistics center project case in China. Results of the case study show that the construction innovation method proposed in this study is scientific, reasonable, and practical. The construction innovation method can be also used for the planning and designing of similar urban logistics centers.

Details

Open House International, vol. 41 no. 3
Type: Research Article
ISSN: 0168-2601

Keywords

Open Access
Article
Publication date: 12 May 2022

Noelle Greenwood and Peter Warren

Framed within global policy debates over the need for private financial flows to align with the capital requirements of the Paris Agreement, this paper examines UK asset managers…

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Abstract

Purpose

Framed within global policy debates over the need for private financial flows to align with the capital requirements of the Paris Agreement, this paper examines UK asset managers in their approaches to disclosing and managing climate risk. This paper identifies and evaluates climate risk management practices among this under-researched investor group in their capacity to address fundamental behavioural obstacles to low-carbon investment.

Design/methodology/approach

This paper takes an inductive approach to document analysis, applying content and thematic analysis to the annual disclosures of the 28 largest UK asset managers (by assets under management), including the investment management arms of insurance and pension companies.

Findings

The main takeaway from this research is that today’s climate risk management strategies hold potential to effectively address traditionally climate risk-averse investor behaviour and investment processes in the UK asset management context. However, this research finds that the use of environmental, social and governance (ESG) investment strategies to mitigate climate risks is a “grey area” in which climate risk management practices are undefined within broad sustainability and responsible investment agendas. In doing so, this paper invites further research into the extent to which climate risks are considered in ESG investment.

Originality/value

This paper contributes to research in sustainable finance and behavioural finance, by identifying the latest climate risk management techniques used among UK-headquartered asset managers and uniquely evaluating these in their capacity to address barriers to low-carbon investment arising from organisational behaviours and processes.

Details

International Journal of Climate Change Strategies and Management, vol. 14 no. 3
Type: Research Article
ISSN: 1756-8692

Keywords

Article
Publication date: 1 September 1998

R.V. Balendran, H.W. Pang and H.X. Wen

This paper offers a brief review of the present use of scanning electron microscopy (SEM) in concrete studies, from the perspective of how research in materials science is…

2471

Abstract

This paper offers a brief review of the present use of scanning electron microscopy (SEM) in concrete studies, from the perspective of how research in materials science is translated into applications in construction engineering. It describes the scope of present use of the method, and attempts a prospective for the near future in areas where more work could make productive use of the technology. Selected case studies have also been discussed. The electron microscope has been used as a research tool in understanding the root cause of the differing performance of various types of concrete under various conditions, a development tool in making better concrete, and a diagnosis tool on problems like cracking of concrete. The paper also explains how sample preparation affects the type and quality of information which the SEM can produce.

Details

Structural Survey, vol. 16 no. 3
Type: Research Article
ISSN: 0263-080X

Keywords

Article
Publication date: 1 March 1985

Tomas Riha

Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and, conversely…

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Abstract

Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and, conversely, innovative thought structures and attitudes have almost always forced economic institutions and modes of behaviour to adjust. We learn from the history of economic doctrines how a particular theory emerged and whether, and in which environment, it could take root. We can see how a school evolves out of a common methodological perception and similar techniques of analysis, and how it has to establish itself. The interaction between unresolved problems on the one hand, and the search for better solutions or explanations on the other, leads to a change in paradigma and to the formation of new lines of reasoning. As long as the real world is subject to progress and change scientific search for explanation must out of necessity continue.

Details

International Journal of Social Economics, vol. 12 no. 3/4/5
Type: Research Article
ISSN: 0306-8293

Article
Publication date: 1 June 1997

Jaroslav Mackerle

Gives a bibliographical review of the finite element methods (FEMs) applied for the linear and nonlinear, static and dynamic analyses of basic structural elements from the…

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Abstract

Gives a bibliographical review of the finite element methods (FEMs) applied for the linear and nonlinear, static and dynamic analyses of basic structural elements from the theoretical as well as practical points of view. The range of applications of FEMs in this area is wide and cannot be presented in a single paper; therefore aims to give the reader an encyclopaedic view on the subject. The bibliography at the end of the paper contains 2,025 references to papers, conference proceedings and theses/dissertations dealing with the analysis of beams, columns, rods, bars, cables, discs, blades, shafts, membranes, plates and shells that were published in 1992‐1995.

Details

Engineering Computations, vol. 14 no. 4
Type: Research Article
ISSN: 0264-4401

Keywords

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