Progress and methodologies of lifecycle commissioning of HVAC systems to enhance building sustainability

Xiao, Fu; Wang, Shengwei

doi:10.1016/j.rser.2008.03.006

Cited by 73 publications

(30 citation statements)

References 17 publications

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“…If current trends continue this movement towards more complex systems will result in a more expensive and lengthy commissioning processes. Xiao and Wang (2009) supported this hypothesis stating that commissioning is labor intensive and that the future will be that of an automated lifecycle commissioning process embedded in the operation of the BEMS (Xiao and Wang 2009). Xiao and Wang (2009) also stated that AFDD is a key means of achieving automated commissioning (Xiao and Wang 2009).…”

Section: How Can Afdd Tools Improve Ahu Maintenance and Hence Performmentioning

confidence: 94%

“…Approximately 50 % of a commercial building's energy consumption is associated with HVAC energy consumption (Xiao and Wang 2009). Overall, it is estimated that HVAC energy consumption accounts for 10-20 % of total energy consumption in developed countries (Pérez-Lombard et al 2008) with AHU associated energy use accounting for the majority of this.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of the AHU InFO fault detection and diagnostic expert tool for AHUs with APAR

et al. 2014

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The contribution of buildings towards total worldwide energy consumption in developed countries is between 20 and 40 %. This is expected to rise by an average rate of 1.5 % per annum over the next 20 years. Heating ventilation and air conditioning (HVAC) and more specifically air handling units (AHUs) energy consumption accounts on average for 40 % of an industrial site's energy consumption. Building systems rarely perform as well in practice as anticipated during design due to improper equipment selection or installation, lack of commissioning, or improper maintenance to cite but a few reasons. Studies have indicated that 20-30 % energy savings are achievable by recommissioning HVAC systems, and more specifically AHU operations, to rectify faulty operation.

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Section: How Can Afdd Tools Improve Ahu Maintenance and Hence Performmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the AHU InFO fault detection and diagnostic expert tool for AHUs with APAR

et al. 2014

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“…This includes Claridge et al (2004, p. 19), Liu (1999, pp. 46 -56), and Xiao andWang (2009, p. 1145), who find the highest quality of Cx occurs regularly over the lifetime of a building, and NEBB's definition of the highest quality of Cx as whole building technical commissioning (WCx): Figure 1 The quality model of commissioning…”

Section: Model Of Commissioningmentioning

confidence: 99%

“…Cx has been a feature of the commercial building industry since the introduction of building services at the beginning of the 20th century (Xiao & Wang, 2009, p. 1145. Commissioning was previously focused on setting to work of heating, ventilation and air-conditioning (HVAC), before becoming a quality process addressing all systems and assemblies (Sterling & Collett, 1994 …”

Section: Introductionmentioning

confidence: 99%

Comparative review of building commissioning regulation: a quality perspective

Lord

Noye

Ure³

et al. 2016

Building Research & Information

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Building regulations are an important policy instrument available to governments wishing to improve building energy efficiency, which should be a priority to policy-makers wishing to target cost-effective avenues in support of carbonabatement targets. Meanwhile, building system commissioning has been recognized as a cost-effective measure to cut energy consumption, but in practice commissioning quality can deliver less-than-satisfactory outcomes. Regulation needs to better support commissioning outcomes. A five-grade commissioning scale is developed to assess the quality of commissioning and propose a common language to assist with regulation setting. Using this scale, building regulation and polices related to new and refurbished building commissioning were analysed in comparative case studies between jurisdictions England and California. This study finds that Californian regulations mandate a higher quality of commissioning and regulations that are more enforceable. The crucial elements to support bettercommissioned buildings were identified as: outputs-focused regulation (not input based); regulation and process clarity; commissioning agents and building official training; as well as acknowledging the financial burden of upholding more complex building regulations. For the full benefit of commissioning to be realized, policy and regulations for existing buildings will be required.

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“…The direct energy needs are for construction, operation and demolition. Instead, the indirect energy needs are for the materials production and disposal [6,7]. The assessment method proposed in this paper does not consider all interactions between the building and the other natural resources such as soil, water, air, etc.. Also, it does not take into account the transitional stage of building construction and demolition, and the related impacts.…”

Section: Energy Efficiencymentioning

confidence: 99%

Exergy as a Parameter for Building Energy Assessment

Leoncini¹,

Baldi²

2015

JCEA

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Abstract:The energy and environmental impacts resulting from the buildings sector are one of the impending problems which address the international action. The main strategies implemented to answer to this problem are the energy efficiency improvement, the CO 2 emissions reduction and the renewable energy share increase in the energy mix. The key subject discussed in this paper is the "building energy impact", aimed to leading the building sector towards the energy efficiency improvement. The paper's aim is to show that an energy assessment is not able to give a consistent evaluation of building energy use, and it could be misleading. Therefore, the paper proposes the exergy assessment as complementary evaluation method, in order to achieve a complete description of the concept "building's energy impact on the environment". In the first section, we describe the parameters currently used for the building energy assessment, focusing on the primary energy index and the CO 2 emissions index. In the second section, we introduce the exergy as a complementary index. This index is a possible answer to the problems previously identified. Finally, in the third section, we present three test-cases, analyzed through transient simulation software TRNSYS. The purpose of the test-cases analysis is to show the difference between energy and exergy assessment.

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Progress and methodologies of lifecycle commissioning of HVAC systems to enhance building sustainability

Cited by 73 publications

References 17 publications

Comparative analysis of the AHU InFO fault detection and diagnostic expert tool for AHUs with APAR

Comparative analysis of the AHU InFO fault detection and diagnostic expert tool for AHUs with APAR

Comparative review of building commissioning regulation: a quality perspective

Exergy as a Parameter for Building Energy Assessment

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