Natural heat transfer air-conditioning terminal device and its system configuration for ultra-low energy buildings

Shu, Haiwen; Bie, Xu; Zhang, Hongliang; Xu, Xiaoyue; Du, Yu; Ma, Yixin; Lin, Defu; Cao, Guangyu

doi:10.1016/j.renene.2019.12.152

Cited by 18 publications

(3 citation statements)

References 16 publications

(12 reference statements)

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“…If windows with lower U-Value and ventilation control as well as energy recovery systems could be incorporated into the VH they would meet the low energy building standards [79,94]. These improvements could make housing more expensive and unaffordable, but the incremental cost can be assumed by grants related to energy savings, and cost reduction could be achieved through the application of OSC techniques [11,95], as well as obtaining economic benefits through building circularity [96].…”

Section: Operational Energy and Emissionsmentioning

confidence: 99%

Assessment of Sustainability and Efficiency Metrics in Modern Methods of Construction: A Case Study Using a Life Cycle Assessment Approach

2023

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The construction industry faces various sustainability challenges, and modern methods of construction (MMC) have been promoted as an effective alternative to mitigate environmental impact and improve productivity. However, to gain a thorough understanding of the benefits, there is a need for more objective data. To address this, the present study employs a simplified life-cycle assessment (LCA) methodology to evaluate a set of environmental and efficiency metrics in a case study. The study aims to demonstrate the benefits of using an MMC known as the “VAP system” by comparing it with its conventional counterpart built with reinforced masonry. Adopting the MMC resulted in significant reductions in embodied carbon (EC) and embodied energy (EE) related to materials, as well as a reduction in global warming potential (GWP), cumulative energy demand (CED), and construction waste. Additionally, it shortened delivery times and increased labor productivity. Furthermore, when both local and European parameters were considered in the evaluation, the percentage of materials circularity (PMC) was higher. The study concludes that the adoption of the MMC leads to higher sustainability by reducing carbon emissions, minimizing construction waste, and conserving resources. This research has significant implications for promoting the adoption of MMC globally, leading to more sustainable and efficient construction practices.

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Section: Operational Energy and Emissionsmentioning

confidence: 99%

Assessment of Sustainability and Efficiency Metrics in Modern Methods of Construction: A Case Study Using a Life Cycle Assessment Approach

2023

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“…Aranguren et al [14], by means of a numerical model, have proposed the adoption of a thermoelectric cooler-heat pump. Taking into consideration the lowered heating and cooling load of high efficient buildings, the adoption of a natural heat transfer air-conditioning terminal device has been investigated by Shu et al [15]. Finally, Huang et al [16] have underlined another important aspect: a proper control of the nZEB cluster is essential for improving load matching, reducing grid interaction and reducing energy bills.…”

Section: Introduction and Literature State Of The Artmentioning

confidence: 99%

Evaluation and optimization of the performance of the heating system in a nZEB educational building by monitoring and simulation

Borrelli

Merema

Ascione

et al. 2021

Energy and Buildings

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The optimal control of the HVAC system in the nearly zero energy buildings (nZEBs) can be considered as a challenge.Indeed, the lack of data given by monitored data does not allow understanding what are the implications of different strategies on thermal comfort and energy consumptions. This paper determines an approach for the evaluation of the management of the heating system in an existing educational nZEB. The aim is to understand how the energy efficiency of the heating system is sensitive to controls strategies and the important role played by the control systems. The test lecture rooms on KU Leuven Ghent Technology Campus (Belgium) have been chosen as case study.A deep analysis, starting from an in-field monitoring, was carried out during the winter period of 2019, in order to assess the actual operation and the energy use of building systems under real conditions. Then, a building energy simulation (BES) model of the building and its systems was developed and calibrated against the real monitoring data. Control strategies of the heating system are simulated and compared to the current configuration. The simulation results show that strategies based on a definition of a heating curve for the boiler can reduce the comfortable time (-23%). Controlling the temperature inside the storage tank as a function of the outdoor temperature together with the control on the activation of the air handling unit result in an energy savings from 32% to 46%, with a correspondent increase of comfort time in the period from 0.6% to 3.4% compared to the baseline scenario, depending to the relationship between the external temperature and water temperature inside the water storage tank.

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“…The latter phenomenon was supported by Corgnati et al [20] as well, who used a CFD method and evaluated the main supply jet properties and draught risk of radiant ceiling panels. Shu et al [21] suggested that the RCSs had better acoustic comfort for occupants, for which these systems had no indoor fans and were based on natural convective heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Experimental study and thermo-economic analysis of a novel radiant-convective cooling system

Jiang

You

Zhang

et al. 2021

International Journal of Refrigeration

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Natural heat transfer air-conditioning terminal device and its system configuration for ultra-low energy buildings

Cited by 18 publications

References 16 publications

Assessment of Sustainability and Efficiency Metrics in Modern Methods of Construction: A Case Study Using a Life Cycle Assessment Approach

Assessment of Sustainability and Efficiency Metrics in Modern Methods of Construction: A Case Study Using a Life Cycle Assessment Approach

Evaluation and optimization of the performance of the heating system in a nZEB educational building by monitoring and simulation

Experimental study and thermo-economic analysis of a novel radiant-convective cooling system

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