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Article
Publication date: 3 December 2018

Ann Tit Wan Yu, Arshad Ali Javed, Tsun Ip Lam, Geoffrey Qiping Shen and Ming Sun

Integrating sustainability into the value management (VM) process can provide a strategic platform for promoting and incorporating sustainable design and development…

Abstract

Purpose

Integrating sustainability into the value management (VM) process can provide a strategic platform for promoting and incorporating sustainable design and development during the lifespans of construction projects. The purpose of this paper is to investigate the strengths, weaknesses, opportunities and threats (SWOT) for integrating sustainability into the VM process in Hong Kong.

Design/methodology/approach

Following an extensive literature review, 45 attributes were identified and grouped into strength, weakness, opportunity and threat elements. A questionnaire survey based on these groupings was supported by semi-structured interviews with public sector clients, value managers and VM facilitators. They shared their experience and views on how to integrate sustainability into the VM exercises.

Findings

The triangulated results of the survey and interviews are presented in this paper. The ranking of the SWOT analysis results indicate that VM does provide opportunities for multidisciplinary professionals and stakeholders to focus on issues relating to society and the environment, which is considered a main strength. The major weakness of integration is the lack of well-trained staff and low levels of VM participant expertise in relation to the sustainable construction issue.

Research limitations/implications

Current practices generally neglect integration of sustainability into the VM process due to cost and time constraints. There are ample strengths and opportunities recommended by this study for integrating sustainability into the VM process which are beneficial for the clients and contractors for achieving value for money and meeting sustainability targets.

Practical implications

There are immense opportunities for integrating sustainability into the VM process, including encouragement of the reduction, reuse and recycling of construction and demolition waste. However, threats presented by integration include the additional time and costs required for achieving sustainability targets.

Originality/value

Findings and recommendations provided in this paper should be helpful to decision makers including clients and VM facilitators for the successful integration of the sustainability concept into the VM process.

Details

Engineering, Construction and Architectural Management, vol. 25 no. 11
Type: Research Article
ISSN: 0969-9988

Keywords

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Article
Publication date: 5 August 2019

Pan Lee, Edwin H.W. Chan, Queena K. Qian and Patrick T.I. Lam

Design teams have difficulties in assessing building carbon emissions at an early stage, as most building energy simulation tools require a detailed input of building…

Abstract

Purpose

Design teams have difficulties in assessing building carbon emissions at an early stage, as most building energy simulation tools require a detailed input of building design for estimation. The purpose of this paper is to develop a user-friendly regression model to estimate carbon emissions of the preliminary design of office buildings in the subtropics by way of example. Five sets of building design parameters, including building configuration, building envelope, design space conditions, building system configuration and occupant behaviour, are considered in this study.

Design/methodology/approach

Both EnergyPlus and Monte Carlo simulation were used to predict carbon emissions for different combinations of the design parameters. A total of 100,000 simulations were conducted to ensure a full range of simulation results. Based on the simulation results, a regression model was developed to estimate carbon emissions of office buildings based on preliminary design information.

Findings

The results show that occupant density, annual mean occupancy rate, equipment load, lighting load and chiller coefficient of performance are the top five influential parameters affecting building carbon emissions under the subtropics. Besides, the design parameters of ten office buildings were input into this user-friendly regression model for validation. The results show that the ranking of its simulated carbon emissions for these ten buildings is consistent with the original carbon emissions ranking.

Practical implications

With the use of this developed regression model, design teams can not only have a simple and quick estimation of carbon emissions based on the building design information at the conceptual stage but also explore design options by understanding the level of reduction in carbon emissions if a certain building design parameter is changed. The study also provides recommendations on building design to reduce carbon emissions of office buildings.

Originality/value

Limited research has been conducted to date to investigate how the change of building design affects carbon emissions in the subtropics where four distinct seasons lead to significant variations of outdoor temperature and relative humidity. Previous research also did not emphasise on the impact of high-rise office building designs (e.g. small building footprint, high window-to-wall ratio) on carbon emissions. This paper adds value by identifying the influential parameters affecting carbon emissions for a high-rise office building design and allows a handy estimate of building carbon emissions under the subtropical conditions. The same approach may be used for other meteorological conditions.

Details

Facilities , vol. 37 no. 11/12
Type: Research Article
ISSN: 0263-2772

Keywords

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Article
Publication date: 1 July 2014

Pan Lee, Tsun Ip Lam and Ren Jye Dzeng

The purpose of this paper is to investigate the current market development of Energy Performance Contracting (EnPC) in Hong Kong and Taiwan, focussing on four key aspects…

Abstract

Purpose

The purpose of this paper is to investigate the current market development of Energy Performance Contracting (EnPC) in Hong Kong and Taiwan, focussing on four key aspects: first, the potential building energy retrofits as an investment for future savings; second, the motivations for building owners toward the use of EnPC; third, the reasons for building owners not using EnPC; and fourth, the different approaches of Hong Kong and Taiwanese governments toward the promotion of EnPC.

Design/methodology/approach

A dual-questionnaire survey was conducted both in Hong Kong and Taiwan, where the same set of questionnaire was sent to the key personnel of the energy services companies (ESCOs) in both regions as identified from the latest member lists of representative trade associations, supplement with 11 structured interviews.

Findings

Apart from explainable differences, the results show the top rankings by the respondents of Hong Kong and Taiwan as follows: “Potential retrofit works” including lighting replacement with efficient fluorescent and light emitting diode lamps and improvement of air-con system. “EnPC Motivations” including owners’ lack of upfront capital and use of energy savings for other purposes may yield better returns; ESCOs’ provision of turnkey services. “Reasons not considering EnPC” including worry about its complexities; lack of familiarity with EnPC and long payback periods. As for promotional efforts for EnPC, the Taiwan government has taken more initiatives to foster its use both technically and financially.

Practical implications

This study identifies market-related motivators and deterrents as experienced by ESCOs in implementing EnPC projects in two developed Asian economies.

Originality/value

This study provides insightful information for the stakeholders about the latest market development of EnPC in Hong Kong and Taiwan.

Details

Journal of Property Investment & Finance, vol. 32 no. 4
Type: Research Article
ISSN: 1463-578X

Keywords

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