Retrofit : Retrofit Volume 1 Issue 2 2012
RETROFIT AUSTRALIA • VOLUME 1 NUMBER 2 2012 • 47 Indoor Environment Quality | outcomes, including CH2 Melbourne, One Shelley Street, ISIS Melbourne, ISIS Canberra, Sydney Water, SA Water, National Australia Bank, The Victorian Building and Plumbing Industry Commission, GPT Sydney, and Trevor Pearcey House, as well as a number of buildings under Local Government Super and GE's respective portfolios. The investigation of IEQ and its effect on productivity within Australian workplaces remains largely in its infancy, and focused on the 'higher end' of office space. NABERS Indoor Environment has allowed a benchmarked approach to measurements of IEQ (and this may be assisted by the introduction of Green Star Performance in 2013); however, it is expected that as more IEQ and productivity investigations take place, the standardisation of productivity and performance metrics will become better defined. This will also assist with the education of tenants within this space, and how best to convey the message for improved engagement. NABERS Indoor Environment and Green Star Performance assist with capturing the benefits to tenants Assessment protocols such as NABERS Indoor Environment and Green Star Performance are/will be critical for capturing the benefits of environmental upgrades in a benchmarked manner. Not only can they validate the savings, but they are also able to project the savings that will result from any environmental upgrade based on international scientific research. Although it may not be a huge driver at present, Colliers International's 2012 report, entitled Generation Y: Implications for Office Markets, found that a space that conforms to a sustainability standard will become imperative in the future. This may be in the form of Green Star, NABERS, LEED or something else entirely. An assessment of the IEQ within the existing tenancy prior to refurbishment or environmental upgrades is essential. Not only does it demonstrate to the organisation the projected improvement in productivity resulting from various proposed environmental upgrades, but it also allows a benchmark to be set and an accurate comparison to be made once the upgrade has been completed. This is critical to validating the cost savings associated with that environmental upgrade, which are attributable to improved IEQ. Currently, feasibility studies (prior to undertaking an environmental upgrade agreement) involve conducting a cost/benefit analysis of a number of sustainable solutions. Many will focus on energy and water savings; however, importantly, an assessment of how the building is currently performing in terms of energy, water, and indoor environment is critical. What's next? The projections relating to IEQ and productivity have been demonstrated to be relatively accurate, and have provided significant value and justification for improving the indoor environment within office spaces. As the emergence of interest in productivity and IEQ continues to grow, and we begin to see more case studies like those outlined here, building stakeholders are well- placed to further exert their influence on the building and maximise its performance. With significant cost savings based on productivity benefits, those involved in driving environmental upgrade agreements will have an indispensable tool with which to benchmark and justify improvements to IEQ performance through environmental upgrades. And, most importantly, the tenants will be happy, engaged, and not forgotten. An assessment of the IEQ within the existing tenancy prior to refurbishment or environmental upgrades is essential Building sustainability upgrade Projected IEQ effect HVAC upgraded with energy-efficient technology chiller and hardware upgrades Direct effect on thermal comfort and outside air ventilation. Indirect effect on air quality Building Management System (BMS) recalibration Reduction of spacial variation in thermal comfort Base building and tenancy lighting upgrade to E1 light fittings Improved satisfaction with lighting Figure 2: Summary of sustainability upgrades and their projected IEQ effects for LGS buildings.
Retrofit Volume 1 2012
Retrofit Volume 2 Issue 1 2013