A rapid evaluation method for design strategies of high-rise office buildings achieving nearly zero energy in Guangzhou

Chen, Sisi; Zhao, Lihua; Zheng, Lintao; Bi, Guanghong

doi:10.1016/j.jobe.2021.103297

Cited by 13 publications

(10 citation statements)

References 14 publications

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“…The reduction in building HVAC energy consumption (Δ𝐸) is shown in equation (6). When rooftop PV system is installed, the predictive model for air conditioning energy consumption in a typical office building [9] needs to be revised, as shown in equation (7). When the number of floors is high, the impact of rooftop PV system on building air conditioning energy consumption is almost negligible.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Ideally, assuming that all the roof area of a high-rise office building is used for PV system, taking the standard floor geometric model of a typical office building established by Chen [9] as an example, PV panels are installed on the building roof at an inclination angle of 19° towards the south, with an installation gap of 0.5m between each row of PV panels, as shown in Fig. 4.…”

Section: Simulation Setupmentioning

confidence: 99%

“…This paper investigated the energy saving potential of a typical office building rooftop PV system in Guangzhou through experiments and simulations. Considering the impact of rooftop PV system on building HVAC energy consumption, the previous developed model for predicting building energy consumption [9] is revised. In addition, the relationship between PV utilization area, building information, PV system performance parameters and electricity generation is established, which provides a rapid and accurate model for architects to estimate the energy saving potential of rooftop PV system in the early building design stage.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the energy saving potential of typical office building rooftop PV system in Guangzhou

Sisi¹,

Chen²,

Bi³

et al. 2023

Preprint

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Rooftop photovoltaic (PV) system is a common utilization of renewable energy in Guangzhou with considerable energy saving potential, which not only produces electricity but also has an impact on building energy consumption system. There are still deficiencies in models for quickly assessing the energy saving potential for rooftop PV system, which makes it more difficult for architects to determine the installed area of rooftop PV in the design stage. This article, therefore, aims to establish the energy saving potential model of a typical office building Rooftop PV system in Guangzhou through experiment and simulation. The results revealed that the most energy-saving potential of the rooftop PV system comes from its electricity generation capacity. Especially for high-rise buildings with high-performance air conditioning systems, the impact of the rooftop PV system on the building HVAC energy consumption is almost negligible.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Simulation Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling the energy saving potential of typical office building rooftop PV system in Guangzhou

Sisi¹,

Chen²,

Bi³

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…Further, HVAC systems in HSCW and HSWW regions consume a great deal of energy because of their necessity for maintaining indoor thermal comfort. By sensitivity analysis and questioning, Chen et al [110] discovered that the energy consumption of HVAC systems is strongly correlated with the energy efficiency of the equipment and that improving the COP is the most effective strategy for reducing HVAC system energy consumption. Similar to cold regions, natural ventilation during the transitional season can also minimize cooling energy usage, particularly in HSCW areas.…”

Section: Discussion On the Application And Carbon Reduction Potential...mentioning

confidence: 99%

A review of carbon footprint reduction of green building technologies in China

Wang¹,

Pan²,

Liang³

et al. 2023

Prog. Energy

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Green building technologies (GBTs) play an important role in carbon emission reduction in the building sector. China is currently in the booming phase of green buildings construction and numerous studies have been conducted on green building technologies, especially on the potential of reducing buildings' energy consumption and carbon emissions. This paper provides a comprehensive overview of various GBTs, including high performance envelope, lighting and daylighting, natural ventilation, HVAC (heating, ventilation and air conditioning) system and the utilization of renewable energy. After describing the phases of the building life cycle and the calculation method of building carbon emissions, the literature review focuses on the applications of GBTs in different climate areas in China as well as the main findings and innovations on their carbon reduction potentials. Finally, recommendations for GBTs development are proposed based on the existing researches to facilitate carbon neutrality in the building sector.

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“…The second seeks through a system of points to define an energy efficiency standard in residential buildings leading to Net Zero Homes [14]. Chen et al [15] developed an evaluation tool to help the designers to determine nZEB in China. They implemented a demonstrative case to observe the best strategies to improve the performance of external windows and use intelligent lighting controlled by zones for the city of Guangzhou.…”

Section: Introductionmentioning

confidence: 99%

TecSB: An Open Web Tool of Energy Efficiency and Solar Energy Integration in Mexican Buildings

2023

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There is a need for stakeholders in the construction sector to evaluate energy efficiency and renewable energy generation alternatives appliable to buildings at early design stages. In this regard, public and private organizations have developed tools to compare different options. It was observed that when the objective was to create nearly Zero Energy Buildings (nZEB), the number of tools was still scarce. With this aim, this work presents a new, free digital tool that can predict, among others, energy consumption, energy generation, emissions savings, and payback time. For this purpose, different alternatives applicable to the roof, such as phase change material (PCM), insulation, and reflective paint, as well as to window-to-wall ratios (WWR), with four different glass technologies, can be evaluated. Furthermore, four renewable energy systems were available for comparison: the solar thermal collector (ST), photovoltaic (PV), flat hybrid solar collector (PVT), and low-concentration parabolic solar collector (LCPVT). Our tool was developed based on the results of transient dynamic building simulations of both residential and non-residential building models located in the hot semi-arid conditions of Monterrey, Mexico. Among the results, the small impact of using only reflective paint, the need to combine PCM with insulating material to obtain the best energy savings, and the large impact on emissions savings when using an LCPVT stand out.

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A rapid evaluation method for design strategies of high-rise office buildings achieving nearly zero energy in Guangzhou

Cited by 13 publications

References 14 publications

Modeling the energy saving potential of typical office building rooftop PV system in Guangzhou

Modeling the energy saving potential of typical office building rooftop PV system in Guangzhou

A review of carbon footprint reduction of green building technologies in China

TecSB: An Open Web Tool of Energy Efficiency and Solar Energy Integration in Mexican Buildings

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